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//===-- LLParser.cpp - Parser Class ---------------------------------------===//
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// The LLVM Compiler Infrastructure
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//===----------------------------------------------------------------------===//
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// This file defines the parser class for .ll files.
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/AsmParser/SlotMapping.h"
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#include "llvm/IR/AutoUpgrade.h"
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#include "llvm/IR/CallingConv.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DebugInfoMetadata.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/InlineAsm.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/Operator.h"
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#include "llvm/IR/ValueSymbolTable.h"
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#include "llvm/Support/Dwarf.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/SaveAndRestore.h"
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#include "llvm/Support/raw_ostream.h"
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static std::string getTypeString(Type *T) {
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raw_string_ostream Tmp(Result);
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/// Run: module ::= toplevelentity*
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bool LLParser::Run() {
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return ParseTopLevelEntities() ||
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ValidateEndOfModule();
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/// ValidateEndOfModule - Do final validity and sanity checks at the end of the
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bool LLParser::ValidateEndOfModule() {
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for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
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UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
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// Handle any function attribute group forward references.
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for (std::map<Value*, std::vector<unsigned> >::iterator
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I = ForwardRefAttrGroups.begin(), E = ForwardRefAttrGroups.end();
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std::vector<unsigned> &Vec = I->second;
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for (std::vector<unsigned>::iterator VI = Vec.begin(), VE = Vec.end();
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B.merge(NumberedAttrBuilders[*VI]);
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if (Function *Fn = dyn_cast<Function>(V)) {
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AttributeSet AS = Fn->getAttributes();
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AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
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AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
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AS.getFnAttributes());
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// If the alignment was parsed as an attribute, move to the alignment
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if (FnAttrs.hasAlignmentAttr()) {
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Fn->setAlignment(FnAttrs.getAlignment());
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FnAttrs.removeAttribute(Attribute::Alignment);
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AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
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AttributeSet::get(Context,
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AttributeSet::FunctionIndex,
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Fn->setAttributes(AS);
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} else if (CallInst *CI = dyn_cast<CallInst>(V)) {
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AttributeSet AS = CI->getAttributes();
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AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
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AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
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AS.getFnAttributes());
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AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
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AttributeSet::get(Context,
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AttributeSet::FunctionIndex,
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CI->setAttributes(AS);
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} else if (InvokeInst *II = dyn_cast<InvokeInst>(V)) {
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AttributeSet AS = II->getAttributes();
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AttrBuilder FnAttrs(AS.getFnAttributes(), AttributeSet::FunctionIndex);
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AS = AS.removeAttributes(Context, AttributeSet::FunctionIndex,
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AS.getFnAttributes());
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AS = AS.addAttributes(Context, AttributeSet::FunctionIndex,
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AttributeSet::get(Context,
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AttributeSet::FunctionIndex,
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II->setAttributes(AS);
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llvm_unreachable("invalid object with forward attribute group reference");
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// If there are entries in ForwardRefBlockAddresses at this point, the
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// function was never defined.
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if (!ForwardRefBlockAddresses.empty())
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return Error(ForwardRefBlockAddresses.begin()->first.Loc,
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"expected function name in blockaddress");
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for (const auto &NT : NumberedTypes)
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if (NT.second.second.isValid())
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return Error(NT.second.second,
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"use of undefined type '%" + Twine(NT.first) + "'");
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for (StringMap<std::pair<Type*, LocTy> >::iterator I =
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NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
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if (I->second.second.isValid())
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return Error(I->second.second,
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"use of undefined type named '" + I->getKey() + "'");
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if (!ForwardRefComdats.empty())
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return Error(ForwardRefComdats.begin()->second,
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"use of undefined comdat '$" +
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ForwardRefComdats.begin()->first + "'");
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if (!ForwardRefVals.empty())
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return Error(ForwardRefVals.begin()->second.second,
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"use of undefined value '@" + ForwardRefVals.begin()->first +
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if (!ForwardRefValIDs.empty())
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return Error(ForwardRefValIDs.begin()->second.second,
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"use of undefined value '@" +
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Twine(ForwardRefValIDs.begin()->first) + "'");
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if (!ForwardRefMDNodes.empty())
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return Error(ForwardRefMDNodes.begin()->second.second,
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"use of undefined metadata '!" +
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Twine(ForwardRefMDNodes.begin()->first) + "'");
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// Resolve metadata cycles.
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for (auto &N : NumberedMetadata) {
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if (N.second && !N.second->isResolved())
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N.second->resolveCycles();
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// Look for intrinsic functions and CallInst that need to be upgraded
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for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
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UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
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UpgradeDebugInfo(*M);
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// Initialize the slot mapping.
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// Because by this point we've parsed and validated everything, we can "steal"
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// the mapping from LLParser as it doesn't need it anymore.
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Slots->GlobalValues = std::move(NumberedVals);
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Slots->MetadataNodes = std::move(NumberedMetadata);
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//===----------------------------------------------------------------------===//
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// Top-Level Entities
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//===----------------------------------------------------------------------===//
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bool LLParser::ParseTopLevelEntities() {
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switch (Lex.getKind()) {
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default: return TokError("expected top-level entity");
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case lltok::Eof: return false;
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case lltok::kw_declare: if (ParseDeclare()) return true; break;
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case lltok::kw_define: if (ParseDefine()) return true; break;
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case lltok::kw_module: if (ParseModuleAsm()) return true; break;
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case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
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case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
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case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
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case lltok::LocalVar: if (ParseNamedType()) return true; break;
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case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
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case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
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case lltok::ComdatVar: if (parseComdat()) return true; break;
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case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
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case lltok::MetadataVar:if (ParseNamedMetadata()) return true; break;
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// The Global variable production with no name can have many different
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// optional leading prefixes, the production is:
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// GlobalVar ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
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// OptionalThreadLocal OptionalAddrSpace OptionalUnnamedAddr
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// ('constant'|'global') ...
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case lltok::kw_private: // OptionalLinkage
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case lltok::kw_internal: // OptionalLinkage
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case lltok::kw_weak: // OptionalLinkage
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case lltok::kw_weak_odr: // OptionalLinkage
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case lltok::kw_linkonce: // OptionalLinkage
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case lltok::kw_linkonce_odr: // OptionalLinkage
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case lltok::kw_appending: // OptionalLinkage
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case lltok::kw_common: // OptionalLinkage
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case lltok::kw_extern_weak: // OptionalLinkage
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case lltok::kw_external: // OptionalLinkage
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case lltok::kw_default: // OptionalVisibility
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case lltok::kw_hidden: // OptionalVisibility
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case lltok::kw_protected: // OptionalVisibility
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case lltok::kw_dllimport: // OptionalDLLStorageClass
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case lltok::kw_dllexport: // OptionalDLLStorageClass
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case lltok::kw_thread_local: // OptionalThreadLocal
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case lltok::kw_addrspace: // OptionalAddrSpace
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case lltok::kw_constant: // GlobalType
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case lltok::kw_global: { // GlobalType
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unsigned Linkage, Visibility, DLLStorageClass;
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GlobalVariable::ThreadLocalMode TLM;
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if (ParseOptionalLinkage(Linkage, HasLinkage) ||
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ParseOptionalVisibility(Visibility) ||
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ParseOptionalDLLStorageClass(DLLStorageClass) ||
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ParseOptionalThreadLocal(TLM) ||
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parseOptionalUnnamedAddr(UnnamedAddr) ||
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ParseGlobal("", SMLoc(), Linkage, HasLinkage, Visibility,
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DLLStorageClass, TLM, UnnamedAddr))
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case lltok::kw_attributes: if (ParseUnnamedAttrGrp()) return true; break;
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case lltok::kw_uselistorder: if (ParseUseListOrder()) return true; break;
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case lltok::kw_uselistorder_bb:
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if (ParseUseListOrderBB()) return true; break;
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/// ::= 'module' 'asm' STRINGCONSTANT
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bool LLParser::ParseModuleAsm() {
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assert(Lex.getKind() == lltok::kw_module);
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if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
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ParseStringConstant(AsmStr)) return true;
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M->appendModuleInlineAsm(AsmStr);
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/// ::= 'target' 'triple' '=' STRINGCONSTANT
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/// ::= 'target' 'datalayout' '=' STRINGCONSTANT
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bool LLParser::ParseTargetDefinition() {
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assert(Lex.getKind() == lltok::kw_target);
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default: return TokError("unknown target property");
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case lltok::kw_triple:
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if (ParseToken(lltok::equal, "expected '=' after target triple") ||
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ParseStringConstant(Str))
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M->setTargetTriple(Str);
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case lltok::kw_datalayout:
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if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
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ParseStringConstant(Str))
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M->setDataLayout(Str);
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/// ::= 'deplibs' '=' '[' ']'
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/// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
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/// FIXME: Remove in 4.0. Currently parse, but ignore.
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bool LLParser::ParseDepLibs() {
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assert(Lex.getKind() == lltok::kw_deplibs);
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if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
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ParseToken(lltok::lsquare, "expected '=' after deplibs"))
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if (EatIfPresent(lltok::rsquare))
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if (ParseStringConstant(Str)) return true;
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} while (EatIfPresent(lltok::comma));
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return ParseToken(lltok::rsquare, "expected ']' at end of list");
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/// ParseUnnamedType:
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/// ::= LocalVarID '=' 'type' type
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bool LLParser::ParseUnnamedType() {
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LocTy TypeLoc = Lex.getLoc();
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unsigned TypeID = Lex.getUIntVal();
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Lex.Lex(); // eat LocalVarID;
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if (ParseToken(lltok::equal, "expected '=' after name") ||
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ParseToken(lltok::kw_type, "expected 'type' after '='"))
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Type *Result = nullptr;
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if (ParseStructDefinition(TypeLoc, "",
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NumberedTypes[TypeID], Result)) return true;
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if (!isa<StructType>(Result)) {
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std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
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return Error(TypeLoc, "non-struct types may not be recursive");
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Entry.first = Result;
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Entry.second = SMLoc();
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/// ::= LocalVar '=' 'type' type
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bool LLParser::ParseNamedType() {
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std::string Name = Lex.getStrVal();
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LocTy NameLoc = Lex.getLoc();
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Lex.Lex(); // eat LocalVar.
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if (ParseToken(lltok::equal, "expected '=' after name") ||
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ParseToken(lltok::kw_type, "expected 'type' after name"))
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Type *Result = nullptr;
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if (ParseStructDefinition(NameLoc, Name,
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NamedTypes[Name], Result)) return true;
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if (!isa<StructType>(Result)) {
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std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
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return Error(NameLoc, "non-struct types may not be recursive");
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Entry.first = Result;
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Entry.second = SMLoc();
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/// ::= 'declare' FunctionHeader
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bool LLParser::ParseDeclare() {
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assert(Lex.getKind() == lltok::kw_declare);
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return ParseFunctionHeader(F, false);
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/// ::= 'define' FunctionHeader (!dbg !56)* '{' ...
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bool LLParser::ParseDefine() {
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assert(Lex.getKind() == lltok::kw_define);
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return ParseFunctionHeader(F, true) ||
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ParseOptionalFunctionMetadata(*F) ||
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ParseFunctionBody(*F);
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bool LLParser::ParseGlobalType(bool &IsConstant) {
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if (Lex.getKind() == lltok::kw_constant)
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else if (Lex.getKind() == lltok::kw_global)
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return TokError("expected 'global' or 'constant'");
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/// ParseUnnamedGlobal:
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/// OptionalVisibility ALIAS ...
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/// OptionalLinkage OptionalVisibility OptionalDLLStorageClass
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/// ... -> global variable
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/// GlobalID '=' OptionalVisibility ALIAS ...
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/// GlobalID '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
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/// ... -> global variable
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bool LLParser::ParseUnnamedGlobal() {
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unsigned VarID = NumberedVals.size();
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LocTy NameLoc = Lex.getLoc();
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// Handle the GlobalID form.
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if (Lex.getKind() == lltok::GlobalID) {
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if (Lex.getUIntVal() != VarID)
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return Error(Lex.getLoc(), "variable expected to be numbered '%" +
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Lex.Lex(); // eat GlobalID;
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if (ParseToken(lltok::equal, "expected '=' after name"))
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unsigned Linkage, Visibility, DLLStorageClass;
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GlobalVariable::ThreadLocalMode TLM;
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if (ParseOptionalLinkage(Linkage, HasLinkage) ||
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ParseOptionalVisibility(Visibility) ||
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ParseOptionalDLLStorageClass(DLLStorageClass) ||
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ParseOptionalThreadLocal(TLM) ||
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parseOptionalUnnamedAddr(UnnamedAddr))
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if (Lex.getKind() != lltok::kw_alias)
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return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
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DLLStorageClass, TLM, UnnamedAddr);
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return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
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/// ParseNamedGlobal:
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/// GlobalVar '=' OptionalVisibility ALIAS ...
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/// GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
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/// ... -> global variable
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bool LLParser::ParseNamedGlobal() {
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assert(Lex.getKind() == lltok::GlobalVar);
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LocTy NameLoc = Lex.getLoc();
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std::string Name = Lex.getStrVal();
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unsigned Linkage, Visibility, DLLStorageClass;
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GlobalVariable::ThreadLocalMode TLM;
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if (ParseToken(lltok::equal, "expected '=' in global variable") ||
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ParseOptionalLinkage(Linkage, HasLinkage) ||
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ParseOptionalVisibility(Visibility) ||
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ParseOptionalDLLStorageClass(DLLStorageClass) ||
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ParseOptionalThreadLocal(TLM) ||
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parseOptionalUnnamedAddr(UnnamedAddr))
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if (Lex.getKind() != lltok::kw_alias)
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return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility,
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DLLStorageClass, TLM, UnnamedAddr);
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return ParseAlias(Name, NameLoc, Linkage, Visibility, DLLStorageClass, TLM,
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bool LLParser::parseComdat() {
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assert(Lex.getKind() == lltok::ComdatVar);
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std::string Name = Lex.getStrVal();
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LocTy NameLoc = Lex.getLoc();
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if (ParseToken(lltok::equal, "expected '=' here"))
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if (ParseToken(lltok::kw_comdat, "expected comdat keyword"))
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return TokError("expected comdat type");
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Comdat::SelectionKind SK;
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switch (Lex.getKind()) {
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return TokError("unknown selection kind");
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case lltok::kw_exactmatch:
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SK = Comdat::ExactMatch;
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case lltok::kw_largest:
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SK = Comdat::Largest;
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case lltok::kw_noduplicates:
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SK = Comdat::NoDuplicates;
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case lltok::kw_samesize:
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SK = Comdat::SameSize;
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// See if the comdat was forward referenced, if so, use the comdat.
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Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
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Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
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if (I != ComdatSymTab.end() && !ForwardRefComdats.erase(Name))
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return Error(NameLoc, "redefinition of comdat '$" + Name + "'");
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if (I != ComdatSymTab.end())
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C = M->getOrInsertComdat(Name);
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C->setSelectionKind(SK);
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// ::= '!' STRINGCONSTANT
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bool LLParser::ParseMDString(MDString *&Result) {
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if (ParseStringConstant(Str)) return true;
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llvm::UpgradeMDStringConstant(Str);
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Result = MDString::get(Context, Str);
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// ::= '!' MDNodeNumber
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bool LLParser::ParseMDNodeID(MDNode *&Result) {
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// !{ ..., !42, ... }
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if (ParseUInt32(MID))
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// If not a forward reference, just return it now.
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if (NumberedMetadata.count(MID)) {
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Result = NumberedMetadata[MID];
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// Otherwise, create MDNode forward reference.
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auto &FwdRef = ForwardRefMDNodes[MID];
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FwdRef = std::make_pair(MDTuple::getTemporary(Context, None), Lex.getLoc());
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Result = FwdRef.first.get();
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NumberedMetadata[MID].reset(Result);
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/// ParseNamedMetadata:
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/// !foo = !{ !1, !2 }
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bool LLParser::ParseNamedMetadata() {
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assert(Lex.getKind() == lltok::MetadataVar);
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std::string Name = Lex.getStrVal();
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if (ParseToken(lltok::equal, "expected '=' here") ||
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ParseToken(lltok::exclaim, "Expected '!' here") ||
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ParseToken(lltok::lbrace, "Expected '{' here"))
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NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
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if (Lex.getKind() != lltok::rbrace)
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if (ParseToken(lltok::exclaim, "Expected '!' here"))
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if (ParseMDNodeID(N)) return true;
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} while (EatIfPresent(lltok::comma));
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return ParseToken(lltok::rbrace, "expected end of metadata node");
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/// ParseStandaloneMetadata:
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bool LLParser::ParseStandaloneMetadata() {
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assert(Lex.getKind() == lltok::exclaim);
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unsigned MetadataID = 0;
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if (ParseUInt32(MetadataID) ||
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ParseToken(lltok::equal, "expected '=' here"))
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// Detect common error, from old metadata syntax.
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if (Lex.getKind() == lltok::Type)
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return TokError("unexpected type in metadata definition");
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bool IsDistinct = EatIfPresent(lltok::kw_distinct);
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if (Lex.getKind() == lltok::MetadataVar) {
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if (ParseSpecializedMDNode(Init, IsDistinct))
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} else if (ParseToken(lltok::exclaim, "Expected '!' here") ||
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ParseMDTuple(Init, IsDistinct))
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// See if this was forward referenced, if so, handle it.
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auto FI = ForwardRefMDNodes.find(MetadataID);
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if (FI != ForwardRefMDNodes.end()) {
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FI->second.first->replaceAllUsesWith(Init);
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ForwardRefMDNodes.erase(FI);
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assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
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if (NumberedMetadata.count(MetadataID))
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return TokError("Metadata id is already used");
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NumberedMetadata[MetadataID].reset(Init);
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static bool isValidVisibilityForLinkage(unsigned V, unsigned L) {
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return !GlobalValue::isLocalLinkage((GlobalValue::LinkageTypes)L) ||
621
(GlobalValue::VisibilityTypes)V == GlobalValue::DefaultVisibility;
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/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility
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/// OptionalDLLStorageClass OptionalThreadLocal
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/// OptionalUnnamedAddr 'alias' Aliasee
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/// Everything through OptionalUnnamedAddr has already been parsed.
634
bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc, unsigned L,
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unsigned Visibility, unsigned DLLStorageClass,
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GlobalVariable::ThreadLocalMode TLM,
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assert(Lex.getKind() == lltok::kw_alias);
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GlobalValue::LinkageTypes Linkage = (GlobalValue::LinkageTypes) L;
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if(!GlobalAlias::isValidLinkage(Linkage))
644
return Error(NameLoc, "invalid linkage type for alias");
646
if (!isValidVisibilityForLinkage(Visibility, L))
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return Error(NameLoc,
648
"symbol with local linkage must have default visibility");
651
LocTy AliaseeLoc = Lex.getLoc();
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if (Lex.getKind() != lltok::kw_bitcast &&
653
Lex.getKind() != lltok::kw_getelementptr &&
654
Lex.getKind() != lltok::kw_addrspacecast &&
655
Lex.getKind() != lltok::kw_inttoptr) {
656
if (ParseGlobalTypeAndValue(Aliasee))
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// The bitcast dest type is not present, it is implied by the dest type.
663
if (ID.Kind != ValID::t_Constant)
664
return Error(AliaseeLoc, "invalid aliasee");
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Aliasee = ID.ConstantVal;
668
Type *AliaseeType = Aliasee->getType();
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auto *PTy = dyn_cast<PointerType>(AliaseeType);
671
return Error(AliaseeLoc, "An alias must have pointer type");
673
// Okay, create the alias but do not insert it into the module yet.
674
std::unique_ptr<GlobalAlias> GA(
675
GlobalAlias::create(PTy, (GlobalValue::LinkageTypes)Linkage, Name,
676
Aliasee, /*Parent*/ nullptr));
677
GA->setThreadLocalMode(TLM);
678
GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
679
GA->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
680
GA->setUnnamedAddr(UnnamedAddr);
683
NumberedVals.push_back(GA.get());
685
// See if this value already exists in the symbol table. If so, it is either
686
// a redefinition or a definition of a forward reference.
687
if (GlobalValue *Val = M->getNamedValue(Name)) {
688
// See if this was a redefinition. If so, there is no entry in
690
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
691
I = ForwardRefVals.find(Name);
692
if (I == ForwardRefVals.end())
693
return Error(NameLoc, "redefinition of global named '@" + Name + "'");
695
// Otherwise, this was a definition of forward ref. Verify that types
697
if (Val->getType() != GA->getType())
698
return Error(NameLoc,
699
"forward reference and definition of alias have different types");
701
// If they agree, just RAUW the old value with the alias and remove the
703
Val->replaceAllUsesWith(GA.get());
704
Val->eraseFromParent();
705
ForwardRefVals.erase(I);
708
// Insert into the module, we know its name won't collide now.
709
M->getAliasList().push_back(GA.get());
710
assert(GA->getName() == Name && "Should not be a name conflict!");
712
// The module owns this now
719
/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalDLLStorageClass
720
/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
721
/// OptionalExternallyInitialized GlobalType Type Const
722
/// ::= OptionalLinkage OptionalVisibility OptionalDLLStorageClass
723
/// OptionalThreadLocal OptionalUnnamedAddr OptionalAddrSpace
724
/// OptionalExternallyInitialized GlobalType Type Const
726
/// Everything up to and including OptionalUnnamedAddr has been parsed
729
bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
730
unsigned Linkage, bool HasLinkage,
731
unsigned Visibility, unsigned DLLStorageClass,
732
GlobalVariable::ThreadLocalMode TLM,
734
if (!isValidVisibilityForLinkage(Visibility, Linkage))
735
return Error(NameLoc,
736
"symbol with local linkage must have default visibility");
739
bool IsConstant, IsExternallyInitialized;
740
LocTy IsExternallyInitializedLoc;
744
if (ParseOptionalAddrSpace(AddrSpace) ||
745
ParseOptionalToken(lltok::kw_externally_initialized,
746
IsExternallyInitialized,
747
&IsExternallyInitializedLoc) ||
748
ParseGlobalType(IsConstant) ||
749
ParseType(Ty, TyLoc))
752
// If the linkage is specified and is external, then no initializer is
754
Constant *Init = nullptr;
755
if (!HasLinkage || (Linkage != GlobalValue::ExternalWeakLinkage &&
756
Linkage != GlobalValue::ExternalLinkage)) {
757
if (ParseGlobalValue(Ty, Init))
761
if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
762
return Error(TyLoc, "invalid type for global variable");
764
GlobalValue *GVal = nullptr;
766
// See if the global was forward referenced, if so, use the global.
768
GVal = M->getNamedValue(Name);
770
if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
771
return Error(NameLoc, "redefinition of global '@" + Name + "'");
774
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
775
I = ForwardRefValIDs.find(NumberedVals.size());
776
if (I != ForwardRefValIDs.end()) {
777
GVal = I->second.first;
778
ForwardRefValIDs.erase(I);
784
GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, nullptr,
785
Name, nullptr, GlobalVariable::NotThreadLocal,
788
if (GVal->getValueType() != Ty)
790
"forward reference and definition of global have different types");
792
GV = cast<GlobalVariable>(GVal);
794
// Move the forward-reference to the correct spot in the module.
795
M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
799
NumberedVals.push_back(GV);
801
// Set the parsed properties on the global.
803
GV->setInitializer(Init);
804
GV->setConstant(IsConstant);
805
GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
806
GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
807
GV->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
808
GV->setExternallyInitialized(IsExternallyInitialized);
809
GV->setThreadLocalMode(TLM);
810
GV->setUnnamedAddr(UnnamedAddr);
812
// Parse attributes on the global.
813
while (Lex.getKind() == lltok::comma) {
816
if (Lex.getKind() == lltok::kw_section) {
818
GV->setSection(Lex.getStrVal());
819
if (ParseToken(lltok::StringConstant, "expected global section string"))
821
} else if (Lex.getKind() == lltok::kw_align) {
823
if (ParseOptionalAlignment(Alignment)) return true;
824
GV->setAlignment(Alignment);
827
if (parseOptionalComdat(Name, C))
832
return TokError("unknown global variable property!");
839
/// ParseUnnamedAttrGrp
840
/// ::= 'attributes' AttrGrpID '=' '{' AttrValPair+ '}'
841
bool LLParser::ParseUnnamedAttrGrp() {
842
assert(Lex.getKind() == lltok::kw_attributes);
843
LocTy AttrGrpLoc = Lex.getLoc();
846
if (Lex.getKind() != lltok::AttrGrpID)
847
return TokError("expected attribute group id");
849
unsigned VarID = Lex.getUIntVal();
850
std::vector<unsigned> unused;
854
if (ParseToken(lltok::equal, "expected '=' here") ||
855
ParseToken(lltok::lbrace, "expected '{' here") ||
856
ParseFnAttributeValuePairs(NumberedAttrBuilders[VarID], unused, true,
858
ParseToken(lltok::rbrace, "expected end of attribute group"))
861
if (!NumberedAttrBuilders[VarID].hasAttributes())
862
return Error(AttrGrpLoc, "attribute group has no attributes");
867
/// ParseFnAttributeValuePairs
868
/// ::= <attr> | <attr> '=' <value>
869
bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B,
870
std::vector<unsigned> &FwdRefAttrGrps,
871
bool inAttrGrp, LocTy &BuiltinLoc) {
872
bool HaveError = false;
877
lltok::Kind Token = Lex.getKind();
878
if (Token == lltok::kw_builtin)
879
BuiltinLoc = Lex.getLoc();
882
if (!inAttrGrp) return HaveError;
883
return Error(Lex.getLoc(), "unterminated attribute group");
888
case lltok::AttrGrpID: {
889
// Allow a function to reference an attribute group:
891
// define void @foo() #1 { ... }
895
"cannot have an attribute group reference in an attribute group");
897
unsigned AttrGrpNum = Lex.getUIntVal();
898
if (inAttrGrp) break;
900
// Save the reference to the attribute group. We'll fill it in later.
901
FwdRefAttrGrps.push_back(AttrGrpNum);
904
// Target-dependent attributes:
905
case lltok::StringConstant: {
906
std::string Attr = Lex.getStrVal();
909
if (EatIfPresent(lltok::equal) &&
910
ParseStringConstant(Val))
913
B.addAttribute(Attr, Val);
917
// Target-independent attributes:
918
case lltok::kw_align: {
919
// As a hack, we allow function alignment to be initially parsed as an
920
// attribute on a function declaration/definition or added to an attribute
921
// group and later moved to the alignment field.
925
if (ParseToken(lltok::equal, "expected '=' here") ||
926
ParseUInt32(Alignment))
929
if (ParseOptionalAlignment(Alignment))
932
B.addAlignmentAttr(Alignment);
935
case lltok::kw_alignstack: {
939
if (ParseToken(lltok::equal, "expected '=' here") ||
940
ParseUInt32(Alignment))
943
if (ParseOptionalStackAlignment(Alignment))
946
B.addStackAlignmentAttr(Alignment);
949
case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break;
950
case lltok::kw_argmemonly: B.addAttribute(Attribute::ArgMemOnly); break;
951
case lltok::kw_builtin: B.addAttribute(Attribute::Builtin); break;
952
case lltok::kw_cold: B.addAttribute(Attribute::Cold); break;
953
case lltok::kw_convergent: B.addAttribute(Attribute::Convergent); break;
954
case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break;
955
case lltok::kw_jumptable: B.addAttribute(Attribute::JumpTable); break;
956
case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break;
957
case lltok::kw_naked: B.addAttribute(Attribute::Naked); break;
958
case lltok::kw_nobuiltin: B.addAttribute(Attribute::NoBuiltin); break;
959
case lltok::kw_noduplicate: B.addAttribute(Attribute::NoDuplicate); break;
960
case lltok::kw_noimplicitfloat:
961
B.addAttribute(Attribute::NoImplicitFloat); break;
962
case lltok::kw_noinline: B.addAttribute(Attribute::NoInline); break;
963
case lltok::kw_nonlazybind: B.addAttribute(Attribute::NonLazyBind); break;
964
case lltok::kw_noredzone: B.addAttribute(Attribute::NoRedZone); break;
965
case lltok::kw_noreturn: B.addAttribute(Attribute::NoReturn); break;
966
case lltok::kw_nounwind: B.addAttribute(Attribute::NoUnwind); break;
967
case lltok::kw_optnone: B.addAttribute(Attribute::OptimizeNone); break;
968
case lltok::kw_optsize: B.addAttribute(Attribute::OptimizeForSize); break;
969
case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
970
case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
971
case lltok::kw_returns_twice:
972
B.addAttribute(Attribute::ReturnsTwice); break;
973
case lltok::kw_ssp: B.addAttribute(Attribute::StackProtect); break;
974
case lltok::kw_sspreq: B.addAttribute(Attribute::StackProtectReq); break;
975
case lltok::kw_sspstrong:
976
B.addAttribute(Attribute::StackProtectStrong); break;
977
case lltok::kw_safestack: B.addAttribute(Attribute::SafeStack); break;
978
case lltok::kw_sanitize_address:
979
B.addAttribute(Attribute::SanitizeAddress); break;
980
case lltok::kw_sanitize_thread:
981
B.addAttribute(Attribute::SanitizeThread); break;
982
case lltok::kw_sanitize_memory:
983
B.addAttribute(Attribute::SanitizeMemory); break;
984
case lltok::kw_uwtable: B.addAttribute(Attribute::UWTable); break;
987
case lltok::kw_inreg:
988
case lltok::kw_signext:
989
case lltok::kw_zeroext:
992
"invalid use of attribute on a function");
994
case lltok::kw_byval:
995
case lltok::kw_dereferenceable:
996
case lltok::kw_dereferenceable_or_null:
997
case lltok::kw_inalloca:
999
case lltok::kw_noalias:
1000
case lltok::kw_nocapture:
1001
case lltok::kw_nonnull:
1002
case lltok::kw_returned:
1003
case lltok::kw_sret:
1006
"invalid use of parameter-only attribute on a function");
1014
//===----------------------------------------------------------------------===//
1015
// GlobalValue Reference/Resolution Routines.
1016
//===----------------------------------------------------------------------===//
1018
/// GetGlobalVal - Get a value with the specified name or ID, creating a
1019
/// forward reference record if needed. This can return null if the value
1020
/// exists but does not have the right type.
1021
GlobalValue *LLParser::GetGlobalVal(const std::string &Name, Type *Ty,
1023
PointerType *PTy = dyn_cast<PointerType>(Ty);
1025
Error(Loc, "global variable reference must have pointer type");
1029
// Look this name up in the normal function symbol table.
1031
cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
1033
// If this is a forward reference for the value, see if we already created a
1034
// forward ref record.
1036
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
1037
I = ForwardRefVals.find(Name);
1038
if (I != ForwardRefVals.end())
1039
Val = I->second.first;
1042
// If we have the value in the symbol table or fwd-ref table, return it.
1044
if (Val->getType() == Ty) return Val;
1045
Error(Loc, "'@" + Name + "' defined with type '" +
1046
getTypeString(Val->getType()) + "'");
1050
// Otherwise, create a new forward reference for this value and remember it.
1051
GlobalValue *FwdVal;
1052
if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1053
FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
1055
FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1056
GlobalValue::ExternalWeakLinkage, nullptr, Name,
1057
nullptr, GlobalVariable::NotThreadLocal,
1058
PTy->getAddressSpace());
1060
ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1064
GlobalValue *LLParser::GetGlobalVal(unsigned ID, Type *Ty, LocTy Loc) {
1065
PointerType *PTy = dyn_cast<PointerType>(Ty);
1067
Error(Loc, "global variable reference must have pointer type");
1071
GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
1073
// If this is a forward reference for the value, see if we already created a
1074
// forward ref record.
1076
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
1077
I = ForwardRefValIDs.find(ID);
1078
if (I != ForwardRefValIDs.end())
1079
Val = I->second.first;
1082
// If we have the value in the symbol table or fwd-ref table, return it.
1084
if (Val->getType() == Ty) return Val;
1085
Error(Loc, "'@" + Twine(ID) + "' defined with type '" +
1086
getTypeString(Val->getType()) + "'");
1090
// Otherwise, create a new forward reference for this value and remember it.
1091
GlobalValue *FwdVal;
1092
if (FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
1093
FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
1095
FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
1096
GlobalValue::ExternalWeakLinkage, nullptr, "");
1098
ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1103
//===----------------------------------------------------------------------===//
1104
// Comdat Reference/Resolution Routines.
1105
//===----------------------------------------------------------------------===//
1107
Comdat *LLParser::getComdat(const std::string &Name, LocTy Loc) {
1108
// Look this name up in the comdat symbol table.
1109
Module::ComdatSymTabType &ComdatSymTab = M->getComdatSymbolTable();
1110
Module::ComdatSymTabType::iterator I = ComdatSymTab.find(Name);
1111
if (I != ComdatSymTab.end())
1114
// Otherwise, create a new forward reference for this value and remember it.
1115
Comdat *C = M->getOrInsertComdat(Name);
1116
ForwardRefComdats[Name] = Loc;
1121
//===----------------------------------------------------------------------===//
1123
//===----------------------------------------------------------------------===//
1125
/// ParseToken - If the current token has the specified kind, eat it and return
1126
/// success. Otherwise, emit the specified error and return failure.
1127
bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
1128
if (Lex.getKind() != T)
1129
return TokError(ErrMsg);
1134
/// ParseStringConstant
1135
/// ::= StringConstant
1136
bool LLParser::ParseStringConstant(std::string &Result) {
1137
if (Lex.getKind() != lltok::StringConstant)
1138
return TokError("expected string constant");
1139
Result = Lex.getStrVal();
1146
bool LLParser::ParseUInt32(unsigned &Val) {
1147
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1148
return TokError("expected integer");
1149
uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
1150
if (Val64 != unsigned(Val64))
1151
return TokError("expected 32-bit integer (too large)");
1159
bool LLParser::ParseUInt64(uint64_t &Val) {
1160
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
1161
return TokError("expected integer");
1162
Val = Lex.getAPSIntVal().getLimitedValue();
1168
/// := 'localdynamic'
1169
/// := 'initialexec'
1171
bool LLParser::ParseTLSModel(GlobalVariable::ThreadLocalMode &TLM) {
1172
switch (Lex.getKind()) {
1174
return TokError("expected localdynamic, initialexec or localexec");
1175
case lltok::kw_localdynamic:
1176
TLM = GlobalVariable::LocalDynamicTLSModel;
1178
case lltok::kw_initialexec:
1179
TLM = GlobalVariable::InitialExecTLSModel;
1181
case lltok::kw_localexec:
1182
TLM = GlobalVariable::LocalExecTLSModel;
1190
/// ParseOptionalThreadLocal
1192
/// := 'thread_local'
1193
/// := 'thread_local' '(' tlsmodel ')'
1194
bool LLParser::ParseOptionalThreadLocal(GlobalVariable::ThreadLocalMode &TLM) {
1195
TLM = GlobalVariable::NotThreadLocal;
1196
if (!EatIfPresent(lltok::kw_thread_local))
1199
TLM = GlobalVariable::GeneralDynamicTLSModel;
1200
if (Lex.getKind() == lltok::lparen) {
1202
return ParseTLSModel(TLM) ||
1203
ParseToken(lltok::rparen, "expected ')' after thread local model");
1208
/// ParseOptionalAddrSpace
1210
/// := 'addrspace' '(' uint32 ')'
1211
bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
1213
if (!EatIfPresent(lltok::kw_addrspace))
1215
return ParseToken(lltok::lparen, "expected '(' in address space") ||
1216
ParseUInt32(AddrSpace) ||
1217
ParseToken(lltok::rparen, "expected ')' in address space");
1220
/// ParseOptionalParamAttrs - Parse a potentially empty list of parameter attributes.
1221
bool LLParser::ParseOptionalParamAttrs(AttrBuilder &B) {
1222
bool HaveError = false;
1227
lltok::Kind Token = Lex.getKind();
1229
default: // End of attributes.
1231
case lltok::kw_align: {
1233
if (ParseOptionalAlignment(Alignment))
1235
B.addAlignmentAttr(Alignment);
1238
case lltok::kw_byval: B.addAttribute(Attribute::ByVal); break;
1239
case lltok::kw_dereferenceable: {
1241
if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1243
B.addDereferenceableAttr(Bytes);
1246
case lltok::kw_dereferenceable_or_null: {
1248
if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1250
B.addDereferenceableOrNullAttr(Bytes);
1253
case lltok::kw_inalloca: B.addAttribute(Attribute::InAlloca); break;
1254
case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1255
case lltok::kw_nest: B.addAttribute(Attribute::Nest); break;
1256
case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1257
case lltok::kw_nocapture: B.addAttribute(Attribute::NoCapture); break;
1258
case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1259
case lltok::kw_readnone: B.addAttribute(Attribute::ReadNone); break;
1260
case lltok::kw_readonly: B.addAttribute(Attribute::ReadOnly); break;
1261
case lltok::kw_returned: B.addAttribute(Attribute::Returned); break;
1262
case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1263
case lltok::kw_sret: B.addAttribute(Attribute::StructRet); break;
1264
case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1266
case lltok::kw_alignstack:
1267
case lltok::kw_alwaysinline:
1268
case lltok::kw_argmemonly:
1269
case lltok::kw_builtin:
1270
case lltok::kw_inlinehint:
1271
case lltok::kw_jumptable:
1272
case lltok::kw_minsize:
1273
case lltok::kw_naked:
1274
case lltok::kw_nobuiltin:
1275
case lltok::kw_noduplicate:
1276
case lltok::kw_noimplicitfloat:
1277
case lltok::kw_noinline:
1278
case lltok::kw_nonlazybind:
1279
case lltok::kw_noredzone:
1280
case lltok::kw_noreturn:
1281
case lltok::kw_nounwind:
1282
case lltok::kw_optnone:
1283
case lltok::kw_optsize:
1284
case lltok::kw_returns_twice:
1285
case lltok::kw_sanitize_address:
1286
case lltok::kw_sanitize_memory:
1287
case lltok::kw_sanitize_thread:
1289
case lltok::kw_sspreq:
1290
case lltok::kw_sspstrong:
1291
case lltok::kw_safestack:
1292
case lltok::kw_uwtable:
1293
HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1301
/// ParseOptionalReturnAttrs - Parse a potentially empty list of return attributes.
1302
bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
1303
bool HaveError = false;
1308
lltok::Kind Token = Lex.getKind();
1310
default: // End of attributes.
1312
case lltok::kw_dereferenceable: {
1314
if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
1316
B.addDereferenceableAttr(Bytes);
1319
case lltok::kw_dereferenceable_or_null: {
1321
if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable_or_null, Bytes))
1323
B.addDereferenceableOrNullAttr(Bytes);
1326
case lltok::kw_inreg: B.addAttribute(Attribute::InReg); break;
1327
case lltok::kw_noalias: B.addAttribute(Attribute::NoAlias); break;
1328
case lltok::kw_nonnull: B.addAttribute(Attribute::NonNull); break;
1329
case lltok::kw_signext: B.addAttribute(Attribute::SExt); break;
1330
case lltok::kw_zeroext: B.addAttribute(Attribute::ZExt); break;
1333
case lltok::kw_align:
1334
case lltok::kw_byval:
1335
case lltok::kw_inalloca:
1336
case lltok::kw_nest:
1337
case lltok::kw_nocapture:
1338
case lltok::kw_returned:
1339
case lltok::kw_sret:
1340
HaveError |= Error(Lex.getLoc(), "invalid use of parameter-only attribute");
1343
case lltok::kw_alignstack:
1344
case lltok::kw_alwaysinline:
1345
case lltok::kw_argmemonly:
1346
case lltok::kw_builtin:
1347
case lltok::kw_cold:
1348
case lltok::kw_inlinehint:
1349
case lltok::kw_jumptable:
1350
case lltok::kw_minsize:
1351
case lltok::kw_naked:
1352
case lltok::kw_nobuiltin:
1353
case lltok::kw_noduplicate:
1354
case lltok::kw_noimplicitfloat:
1355
case lltok::kw_noinline:
1356
case lltok::kw_nonlazybind:
1357
case lltok::kw_noredzone:
1358
case lltok::kw_noreturn:
1359
case lltok::kw_nounwind:
1360
case lltok::kw_optnone:
1361
case lltok::kw_optsize:
1362
case lltok::kw_returns_twice:
1363
case lltok::kw_sanitize_address:
1364
case lltok::kw_sanitize_memory:
1365
case lltok::kw_sanitize_thread:
1367
case lltok::kw_sspreq:
1368
case lltok::kw_sspstrong:
1369
case lltok::kw_safestack:
1370
case lltok::kw_uwtable:
1371
HaveError |= Error(Lex.getLoc(), "invalid use of function-only attribute");
1374
case lltok::kw_readnone:
1375
case lltok::kw_readonly:
1376
HaveError |= Error(Lex.getLoc(), "invalid use of attribute on return type");
1383
/// ParseOptionalLinkage
1390
/// ::= 'linkonce_odr'
1391
/// ::= 'available_externally'
1394
/// ::= 'extern_weak'
1396
bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
1398
switch (Lex.getKind()) {
1399
default: Res=GlobalValue::ExternalLinkage; return false;
1400
case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
1401
case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
1402
case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
1403
case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
1404
case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
1405
case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
1406
case lltok::kw_available_externally:
1407
Res = GlobalValue::AvailableExternallyLinkage;
1409
case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
1410
case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
1411
case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
1412
case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
1419
/// ParseOptionalVisibility
1425
bool LLParser::ParseOptionalVisibility(unsigned &Res) {
1426
switch (Lex.getKind()) {
1427
default: Res = GlobalValue::DefaultVisibility; return false;
1428
case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
1429
case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
1430
case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
1436
/// ParseOptionalDLLStorageClass
1441
bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
1442
switch (Lex.getKind()) {
1443
default: Res = GlobalValue::DefaultStorageClass; return false;
1444
case lltok::kw_dllimport: Res = GlobalValue::DLLImportStorageClass; break;
1445
case lltok::kw_dllexport: Res = GlobalValue::DLLExportStorageClass; break;
1451
/// ParseOptionalCallingConv
1455
/// ::= 'intel_ocl_bicc'
1457
/// ::= 'x86_stdcallcc'
1458
/// ::= 'x86_fastcallcc'
1459
/// ::= 'x86_thiscallcc'
1460
/// ::= 'x86_vectorcallcc'
1461
/// ::= 'arm_apcscc'
1462
/// ::= 'arm_aapcscc'
1463
/// ::= 'arm_aapcs_vfpcc'
1464
/// ::= 'msp430_intrcc'
1465
/// ::= 'ptx_kernel'
1466
/// ::= 'ptx_device'
1468
/// ::= 'spir_kernel'
1469
/// ::= 'x86_64_sysvcc'
1470
/// ::= 'x86_64_win64cc'
1471
/// ::= 'webkit_jscc'
1473
/// ::= 'preserve_mostcc'
1474
/// ::= 'preserve_allcc'
1478
bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1479
switch (Lex.getKind()) {
1480
default: CC = CallingConv::C; return false;
1481
case lltok::kw_ccc: CC = CallingConv::C; break;
1482
case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1483
case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1484
case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1485
case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1486
case lltok::kw_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
1487
case lltok::kw_x86_vectorcallcc:CC = CallingConv::X86_VectorCall; break;
1488
case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1489
case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1490
case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1491
case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
1492
case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
1493
case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
1494
case lltok::kw_spir_kernel: CC = CallingConv::SPIR_KERNEL; break;
1495
case lltok::kw_spir_func: CC = CallingConv::SPIR_FUNC; break;
1496
case lltok::kw_intel_ocl_bicc: CC = CallingConv::Intel_OCL_BI; break;
1497
case lltok::kw_x86_64_sysvcc: CC = CallingConv::X86_64_SysV; break;
1498
case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
1499
case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS; break;
1500
case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
1501
case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
1502
case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
1503
case lltok::kw_ghccc: CC = CallingConv::GHC; break;
1504
case lltok::kw_cc: {
1506
return ParseUInt32(CC);
1514
/// ParseMetadataAttachment
1516
bool LLParser::ParseMetadataAttachment(unsigned &Kind, MDNode *&MD) {
1517
assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata attachment");
1519
std::string Name = Lex.getStrVal();
1520
Kind = M->getMDKindID(Name);
1523
return ParseMDNode(MD);
1526
/// ParseInstructionMetadata
1527
/// ::= !dbg !42 (',' !dbg !57)*
1528
bool LLParser::ParseInstructionMetadata(Instruction &Inst) {
1530
if (Lex.getKind() != lltok::MetadataVar)
1531
return TokError("expected metadata after comma");
1535
if (ParseMetadataAttachment(MDK, N))
1538
Inst.setMetadata(MDK, N);
1539
if (MDK == LLVMContext::MD_tbaa)
1540
InstsWithTBAATag.push_back(&Inst);
1542
// If this is the end of the list, we're done.
1543
} while (EatIfPresent(lltok::comma));
1547
/// ParseOptionalFunctionMetadata
1549
bool LLParser::ParseOptionalFunctionMetadata(Function &F) {
1550
while (Lex.getKind() == lltok::MetadataVar) {
1553
if (ParseMetadataAttachment(MDK, N))
1556
F.setMetadata(MDK, N);
1561
/// ParseOptionalAlignment
1564
bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1566
if (!EatIfPresent(lltok::kw_align))
1568
LocTy AlignLoc = Lex.getLoc();
1569
if (ParseUInt32(Alignment)) return true;
1570
if (!isPowerOf2_32(Alignment))
1571
return Error(AlignLoc, "alignment is not a power of two");
1572
if (Alignment > Value::MaximumAlignment)
1573
return Error(AlignLoc, "huge alignments are not supported yet");
1577
/// ParseOptionalDerefAttrBytes
1579
/// ::= AttrKind '(' 4 ')'
1581
/// where AttrKind is either 'dereferenceable' or 'dereferenceable_or_null'.
1582
bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
1584
assert((AttrKind == lltok::kw_dereferenceable ||
1585
AttrKind == lltok::kw_dereferenceable_or_null) &&
1589
if (!EatIfPresent(AttrKind))
1591
LocTy ParenLoc = Lex.getLoc();
1592
if (!EatIfPresent(lltok::lparen))
1593
return Error(ParenLoc, "expected '('");
1594
LocTy DerefLoc = Lex.getLoc();
1595
if (ParseUInt64(Bytes)) return true;
1596
ParenLoc = Lex.getLoc();
1597
if (!EatIfPresent(lltok::rparen))
1598
return Error(ParenLoc, "expected ')'");
1600
return Error(DerefLoc, "dereferenceable bytes must be non-zero");
1604
/// ParseOptionalCommaAlign
1608
/// This returns with AteExtraComma set to true if it ate an excess comma at the
1610
bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
1611
bool &AteExtraComma) {
1612
AteExtraComma = false;
1613
while (EatIfPresent(lltok::comma)) {
1614
// Metadata at the end is an early exit.
1615
if (Lex.getKind() == lltok::MetadataVar) {
1616
AteExtraComma = true;
1620
if (Lex.getKind() != lltok::kw_align)
1621
return Error(Lex.getLoc(), "expected metadata or 'align'");
1623
if (ParseOptionalAlignment(Alignment)) return true;
1629
/// ParseScopeAndOrdering
1630
/// if isAtomic: ::= 'singlethread'? AtomicOrdering
1633
/// This sets Scope and Ordering to the parsed values.
1634
bool LLParser::ParseScopeAndOrdering(bool isAtomic, SynchronizationScope &Scope,
1635
AtomicOrdering &Ordering) {
1639
Scope = CrossThread;
1640
if (EatIfPresent(lltok::kw_singlethread))
1641
Scope = SingleThread;
1643
return ParseOrdering(Ordering);
1647
/// ::= AtomicOrdering
1649
/// This sets Ordering to the parsed value.
1650
bool LLParser::ParseOrdering(AtomicOrdering &Ordering) {
1651
switch (Lex.getKind()) {
1652
default: return TokError("Expected ordering on atomic instruction");
1653
case lltok::kw_unordered: Ordering = Unordered; break;
1654
case lltok::kw_monotonic: Ordering = Monotonic; break;
1655
case lltok::kw_acquire: Ordering = Acquire; break;
1656
case lltok::kw_release: Ordering = Release; break;
1657
case lltok::kw_acq_rel: Ordering = AcquireRelease; break;
1658
case lltok::kw_seq_cst: Ordering = SequentiallyConsistent; break;
1664
/// ParseOptionalStackAlignment
1666
/// ::= 'alignstack' '(' 4 ')'
1667
bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
1669
if (!EatIfPresent(lltok::kw_alignstack))
1671
LocTy ParenLoc = Lex.getLoc();
1672
if (!EatIfPresent(lltok::lparen))
1673
return Error(ParenLoc, "expected '('");
1674
LocTy AlignLoc = Lex.getLoc();
1675
if (ParseUInt32(Alignment)) return true;
1676
ParenLoc = Lex.getLoc();
1677
if (!EatIfPresent(lltok::rparen))
1678
return Error(ParenLoc, "expected ')'");
1679
if (!isPowerOf2_32(Alignment))
1680
return Error(AlignLoc, "stack alignment is not a power of two");
1684
/// ParseIndexList - This parses the index list for an insert/extractvalue
1685
/// instruction. This sets AteExtraComma in the case where we eat an extra
1686
/// comma at the end of the line and find that it is followed by metadata.
1687
/// Clients that don't allow metadata can call the version of this function that
1688
/// only takes one argument.
1691
/// ::= (',' uint32)+
1693
bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
1694
bool &AteExtraComma) {
1695
AteExtraComma = false;
1697
if (Lex.getKind() != lltok::comma)
1698
return TokError("expected ',' as start of index list");
1700
while (EatIfPresent(lltok::comma)) {
1701
if (Lex.getKind() == lltok::MetadataVar) {
1702
if (Indices.empty()) return TokError("expected index");
1703
AteExtraComma = true;
1707
if (ParseUInt32(Idx)) return true;
1708
Indices.push_back(Idx);
1714
//===----------------------------------------------------------------------===//
1716
//===----------------------------------------------------------------------===//
1718
/// ParseType - Parse a type.
1719
bool LLParser::ParseType(Type *&Result, const Twine &Msg, bool AllowVoid) {
1720
SMLoc TypeLoc = Lex.getLoc();
1721
switch (Lex.getKind()) {
1723
return TokError(Msg);
1725
// Type ::= 'float' | 'void' (etc)
1726
Result = Lex.getTyVal();
1730
// Type ::= StructType
1731
if (ParseAnonStructType(Result, false))
1734
case lltok::lsquare:
1735
// Type ::= '[' ... ']'
1736
Lex.Lex(); // eat the lsquare.
1737
if (ParseArrayVectorType(Result, false))
1740
case lltok::less: // Either vector or packed struct.
1741
// Type ::= '<' ... '>'
1743
if (Lex.getKind() == lltok::lbrace) {
1744
if (ParseAnonStructType(Result, true) ||
1745
ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1747
} else if (ParseArrayVectorType(Result, true))
1750
case lltok::LocalVar: {
1752
std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
1754
// If the type hasn't been defined yet, create a forward definition and
1755
// remember where that forward def'n was seen (in case it never is defined).
1757
Entry.first = StructType::create(Context, Lex.getStrVal());
1758
Entry.second = Lex.getLoc();
1760
Result = Entry.first;
1765
case lltok::LocalVarID: {
1767
std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
1769
// If the type hasn't been defined yet, create a forward definition and
1770
// remember where that forward def'n was seen (in case it never is defined).
1772
Entry.first = StructType::create(Context);
1773
Entry.second = Lex.getLoc();
1775
Result = Entry.first;
1781
// Parse the type suffixes.
1783
switch (Lex.getKind()) {
1786
if (!AllowVoid && Result->isVoidTy())
1787
return Error(TypeLoc, "void type only allowed for function results");
1790
// Type ::= Type '*'
1792
if (Result->isLabelTy())
1793
return TokError("basic block pointers are invalid");
1794
if (Result->isVoidTy())
1795
return TokError("pointers to void are invalid - use i8* instead");
1796
if (!PointerType::isValidElementType(Result))
1797
return TokError("pointer to this type is invalid");
1798
Result = PointerType::getUnqual(Result);
1802
// Type ::= Type 'addrspace' '(' uint32 ')' '*'
1803
case lltok::kw_addrspace: {
1804
if (Result->isLabelTy())
1805
return TokError("basic block pointers are invalid");
1806
if (Result->isVoidTy())
1807
return TokError("pointers to void are invalid; use i8* instead");
1808
if (!PointerType::isValidElementType(Result))
1809
return TokError("pointer to this type is invalid");
1811
if (ParseOptionalAddrSpace(AddrSpace) ||
1812
ParseToken(lltok::star, "expected '*' in address space"))
1815
Result = PointerType::get(Result, AddrSpace);
1819
/// Types '(' ArgTypeListI ')' OptFuncAttrs
1821
if (ParseFunctionType(Result))
1828
/// ParseParameterList
1830
/// ::= '(' Arg (',' Arg)* ')'
1832
/// ::= Type OptionalAttributes Value OptionalAttributes
1833
bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1834
PerFunctionState &PFS, bool IsMustTailCall,
1835
bool InVarArgsFunc) {
1836
if (ParseToken(lltok::lparen, "expected '(' in call"))
1839
unsigned AttrIndex = 1;
1840
while (Lex.getKind() != lltok::rparen) {
1841
// If this isn't the first argument, we need a comma.
1842
if (!ArgList.empty() &&
1843
ParseToken(lltok::comma, "expected ',' in argument list"))
1846
// Parse an ellipsis if this is a musttail call in a variadic function.
1847
if (Lex.getKind() == lltok::dotdotdot) {
1848
const char *Msg = "unexpected ellipsis in argument list for ";
1849
if (!IsMustTailCall)
1850
return TokError(Twine(Msg) + "non-musttail call");
1852
return TokError(Twine(Msg) + "musttail call in non-varargs function");
1853
Lex.Lex(); // Lex the '...', it is purely for readability.
1854
return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1857
// Parse the argument.
1859
Type *ArgTy = nullptr;
1860
AttrBuilder ArgAttrs;
1862
if (ParseType(ArgTy, ArgLoc))
1865
if (ArgTy->isMetadataTy()) {
1866
if (ParseMetadataAsValue(V, PFS))
1869
// Otherwise, handle normal operands.
1870
if (ParseOptionalParamAttrs(ArgAttrs) || ParseValue(ArgTy, V, PFS))
1873
ArgList.push_back(ParamInfo(ArgLoc, V, AttributeSet::get(V->getContext(),
1878
if (IsMustTailCall && InVarArgsFunc)
1879
return TokError("expected '...' at end of argument list for musttail call "
1880
"in varargs function");
1882
Lex.Lex(); // Lex the ')'.
1888
/// ParseArgumentList - Parse the argument list for a function type or function
1890
/// ::= '(' ArgTypeListI ')'
1894
/// ::= ArgTypeList ',' '...'
1895
/// ::= ArgType (',' ArgType)*
1897
bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
1900
assert(Lex.getKind() == lltok::lparen);
1901
Lex.Lex(); // eat the (.
1903
if (Lex.getKind() == lltok::rparen) {
1905
} else if (Lex.getKind() == lltok::dotdotdot) {
1909
LocTy TypeLoc = Lex.getLoc();
1910
Type *ArgTy = nullptr;
1914
if (ParseType(ArgTy) ||
1915
ParseOptionalParamAttrs(Attrs)) return true;
1917
if (ArgTy->isVoidTy())
1918
return Error(TypeLoc, "argument can not have void type");
1920
if (Lex.getKind() == lltok::LocalVar) {
1921
Name = Lex.getStrVal();
1925
if (!FunctionType::isValidArgumentType(ArgTy))
1926
return Error(TypeLoc, "invalid type for function argument");
1928
unsigned AttrIndex = 1;
1929
ArgList.emplace_back(TypeLoc, ArgTy, AttributeSet::get(ArgTy->getContext(),
1930
AttrIndex++, Attrs),
1933
while (EatIfPresent(lltok::comma)) {
1934
// Handle ... at end of arg list.
1935
if (EatIfPresent(lltok::dotdotdot)) {
1940
// Otherwise must be an argument type.
1941
TypeLoc = Lex.getLoc();
1942
if (ParseType(ArgTy) || ParseOptionalParamAttrs(Attrs)) return true;
1944
if (ArgTy->isVoidTy())
1945
return Error(TypeLoc, "argument can not have void type");
1947
if (Lex.getKind() == lltok::LocalVar) {
1948
Name = Lex.getStrVal();
1954
if (!ArgTy->isFirstClassType())
1955
return Error(TypeLoc, "invalid type for function argument");
1957
ArgList.emplace_back(
1959
AttributeSet::get(ArgTy->getContext(), AttrIndex++, Attrs),
1964
return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1967
/// ParseFunctionType
1968
/// ::= Type ArgumentList OptionalAttrs
1969
bool LLParser::ParseFunctionType(Type *&Result) {
1970
assert(Lex.getKind() == lltok::lparen);
1972
if (!FunctionType::isValidReturnType(Result))
1973
return TokError("invalid function return type");
1975
SmallVector<ArgInfo, 8> ArgList;
1977
if (ParseArgumentList(ArgList, isVarArg))
1980
// Reject names on the arguments lists.
1981
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1982
if (!ArgList[i].Name.empty())
1983
return Error(ArgList[i].Loc, "argument name invalid in function type");
1984
if (ArgList[i].Attrs.hasAttributes(i + 1))
1985
return Error(ArgList[i].Loc,
1986
"argument attributes invalid in function type");
1989
SmallVector<Type*, 16> ArgListTy;
1990
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1991
ArgListTy.push_back(ArgList[i].Ty);
1993
Result = FunctionType::get(Result, ArgListTy, isVarArg);
1997
/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
1999
bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
2000
SmallVector<Type*, 8> Elts;
2001
if (ParseStructBody(Elts)) return true;
2003
Result = StructType::get(Context, Elts, Packed);
2007
/// ParseStructDefinition - Parse a struct in a 'type' definition.
2008
bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
2009
std::pair<Type*, LocTy> &Entry,
2011
// If the type was already defined, diagnose the redefinition.
2012
if (Entry.first && !Entry.second.isValid())
2013
return Error(TypeLoc, "redefinition of type");
2015
// If we have opaque, just return without filling in the definition for the
2016
// struct. This counts as a definition as far as the .ll file goes.
2017
if (EatIfPresent(lltok::kw_opaque)) {
2018
// This type is being defined, so clear the location to indicate this.
2019
Entry.second = SMLoc();
2021
// If this type number has never been uttered, create it.
2023
Entry.first = StructType::create(Context, Name);
2024
ResultTy = Entry.first;
2028
// If the type starts with '<', then it is either a packed struct or a vector.
2029
bool isPacked = EatIfPresent(lltok::less);
2031
// If we don't have a struct, then we have a random type alias, which we
2032
// accept for compatibility with old files. These types are not allowed to be
2033
// forward referenced and not allowed to be recursive.
2034
if (Lex.getKind() != lltok::lbrace) {
2036
return Error(TypeLoc, "forward references to non-struct type");
2040
return ParseArrayVectorType(ResultTy, true);
2041
return ParseType(ResultTy);
2044
// This type is being defined, so clear the location to indicate this.
2045
Entry.second = SMLoc();
2047
// If this type number has never been uttered, create it.
2049
Entry.first = StructType::create(Context, Name);
2051
StructType *STy = cast<StructType>(Entry.first);
2053
SmallVector<Type*, 8> Body;
2054
if (ParseStructBody(Body) ||
2055
(isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
2058
STy->setBody(Body, isPacked);
2064
/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
2067
/// ::= '{' Type (',' Type)* '}'
2068
/// ::= '<' '{' '}' '>'
2069
/// ::= '<' '{' Type (',' Type)* '}' '>'
2070
bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
2071
assert(Lex.getKind() == lltok::lbrace);
2072
Lex.Lex(); // Consume the '{'
2074
// Handle the empty struct.
2075
if (EatIfPresent(lltok::rbrace))
2078
LocTy EltTyLoc = Lex.getLoc();
2080
if (ParseType(Ty)) return true;
2083
if (!StructType::isValidElementType(Ty))
2084
return Error(EltTyLoc, "invalid element type for struct");
2086
while (EatIfPresent(lltok::comma)) {
2087
EltTyLoc = Lex.getLoc();
2088
if (ParseType(Ty)) return true;
2090
if (!StructType::isValidElementType(Ty))
2091
return Error(EltTyLoc, "invalid element type for struct");
2096
return ParseToken(lltok::rbrace, "expected '}' at end of struct");
2099
/// ParseArrayVectorType - Parse an array or vector type, assuming the first
2100
/// token has already been consumed.
2102
/// ::= '[' APSINTVAL 'x' Types ']'
2103
/// ::= '<' APSINTVAL 'x' Types '>'
2104
bool LLParser::ParseArrayVectorType(Type *&Result, bool isVector) {
2105
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
2106
Lex.getAPSIntVal().getBitWidth() > 64)
2107
return TokError("expected number in address space");
2109
LocTy SizeLoc = Lex.getLoc();
2110
uint64_t Size = Lex.getAPSIntVal().getZExtValue();
2113
if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
2116
LocTy TypeLoc = Lex.getLoc();
2117
Type *EltTy = nullptr;
2118
if (ParseType(EltTy)) return true;
2120
if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
2121
"expected end of sequential type"))
2126
return Error(SizeLoc, "zero element vector is illegal");
2127
if ((unsigned)Size != Size)
2128
return Error(SizeLoc, "size too large for vector");
2129
if (!VectorType::isValidElementType(EltTy))
2130
return Error(TypeLoc, "invalid vector element type");
2131
Result = VectorType::get(EltTy, unsigned(Size));
2133
if (!ArrayType::isValidElementType(EltTy))
2134
return Error(TypeLoc, "invalid array element type");
2135
Result = ArrayType::get(EltTy, Size);
2140
//===----------------------------------------------------------------------===//
2141
// Function Semantic Analysis.
2142
//===----------------------------------------------------------------------===//
2144
LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
2146
: P(p), F(f), FunctionNumber(functionNumber) {
2148
// Insert unnamed arguments into the NumberedVals list.
2149
for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
2152
NumberedVals.push_back(AI);
2155
LLParser::PerFunctionState::~PerFunctionState() {
2156
// If there were any forward referenced non-basicblock values, delete them.
2157
for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
2158
I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
2159
if (!isa<BasicBlock>(I->second.first)) {
2160
I->second.first->replaceAllUsesWith(
2161
UndefValue::get(I->second.first->getType()));
2162
delete I->second.first;
2163
I->second.first = nullptr;
2166
for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2167
I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
2168
if (!isa<BasicBlock>(I->second.first)) {
2169
I->second.first->replaceAllUsesWith(
2170
UndefValue::get(I->second.first->getType()));
2171
delete I->second.first;
2172
I->second.first = nullptr;
2176
bool LLParser::PerFunctionState::FinishFunction() {
2177
if (!ForwardRefVals.empty())
2178
return P.Error(ForwardRefVals.begin()->second.second,
2179
"use of undefined value '%" + ForwardRefVals.begin()->first +
2181
if (!ForwardRefValIDs.empty())
2182
return P.Error(ForwardRefValIDs.begin()->second.second,
2183
"use of undefined value '%" +
2184
Twine(ForwardRefValIDs.begin()->first) + "'");
2189
/// GetVal - Get a value with the specified name or ID, creating a
2190
/// forward reference record if needed. This can return null if the value
2191
/// exists but does not have the right type.
2192
Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
2193
Type *Ty, LocTy Loc) {
2194
// Look this name up in the normal function symbol table.
2195
Value *Val = F.getValueSymbolTable().lookup(Name);
2197
// If this is a forward reference for the value, see if we already created a
2198
// forward ref record.
2200
std::map<std::string, std::pair<Value*, LocTy> >::iterator
2201
I = ForwardRefVals.find(Name);
2202
if (I != ForwardRefVals.end())
2203
Val = I->second.first;
2206
// If we have the value in the symbol table or fwd-ref table, return it.
2208
if (Val->getType() == Ty) return Val;
2209
if (Ty->isLabelTy())
2210
P.Error(Loc, "'%" + Name + "' is not a basic block");
2212
P.Error(Loc, "'%" + Name + "' defined with type '" +
2213
getTypeString(Val->getType()) + "'");
2217
// Don't make placeholders with invalid type.
2218
if (!Ty->isFirstClassType()) {
2219
P.Error(Loc, "invalid use of a non-first-class type");
2223
// Otherwise, create a new forward reference for this value and remember it.
2225
if (Ty->isLabelTy())
2226
FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
2228
FwdVal = new Argument(Ty, Name);
2230
ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
2234
Value *LLParser::PerFunctionState::GetVal(unsigned ID, Type *Ty,
2236
// Look this name up in the normal function symbol table.
2237
Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : nullptr;
2239
// If this is a forward reference for the value, see if we already created a
2240
// forward ref record.
2242
std::map<unsigned, std::pair<Value*, LocTy> >::iterator
2243
I = ForwardRefValIDs.find(ID);
2244
if (I != ForwardRefValIDs.end())
2245
Val = I->second.first;
2248
// If we have the value in the symbol table or fwd-ref table, return it.
2250
if (Val->getType() == Ty) return Val;
2251
if (Ty->isLabelTy())
2252
P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
2254
P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
2255
getTypeString(Val->getType()) + "'");
2259
if (!Ty->isFirstClassType()) {
2260
P.Error(Loc, "invalid use of a non-first-class type");
2264
// Otherwise, create a new forward reference for this value and remember it.
2266
if (Ty->isLabelTy())
2267
FwdVal = BasicBlock::Create(F.getContext(), "", &F);
2269
FwdVal = new Argument(Ty);
2271
ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
2275
/// SetInstName - After an instruction is parsed and inserted into its
2276
/// basic block, this installs its name.
2277
bool LLParser::PerFunctionState::SetInstName(int NameID,
2278
const std::string &NameStr,
2279
LocTy NameLoc, Instruction *Inst) {
2280
// If this instruction has void type, it cannot have a name or ID specified.
2281
if (Inst->getType()->isVoidTy()) {
2282
if (NameID != -1 || !NameStr.empty())
2283
return P.Error(NameLoc, "instructions returning void cannot have a name");
2287
// If this was a numbered instruction, verify that the instruction is the
2288
// expected value and resolve any forward references.
2289
if (NameStr.empty()) {
2290
// If neither a name nor an ID was specified, just use the next ID.
2292
NameID = NumberedVals.size();
2294
if (unsigned(NameID) != NumberedVals.size())
2295
return P.Error(NameLoc, "instruction expected to be numbered '%" +
2296
Twine(NumberedVals.size()) + "'");
2298
std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
2299
ForwardRefValIDs.find(NameID);
2300
if (FI != ForwardRefValIDs.end()) {
2301
if (FI->second.first->getType() != Inst->getType())
2302
return P.Error(NameLoc, "instruction forward referenced with type '" +
2303
getTypeString(FI->second.first->getType()) + "'");
2304
FI->second.first->replaceAllUsesWith(Inst);
2305
delete FI->second.first;
2306
ForwardRefValIDs.erase(FI);
2309
NumberedVals.push_back(Inst);
2313
// Otherwise, the instruction had a name. Resolve forward refs and set it.
2314
std::map<std::string, std::pair<Value*, LocTy> >::iterator
2315
FI = ForwardRefVals.find(NameStr);
2316
if (FI != ForwardRefVals.end()) {
2317
if (FI->second.first->getType() != Inst->getType())
2318
return P.Error(NameLoc, "instruction forward referenced with type '" +
2319
getTypeString(FI->second.first->getType()) + "'");
2320
FI->second.first->replaceAllUsesWith(Inst);
2321
delete FI->second.first;
2322
ForwardRefVals.erase(FI);
2325
// Set the name on the instruction.
2326
Inst->setName(NameStr);
2328
if (Inst->getName() != NameStr)
2329
return P.Error(NameLoc, "multiple definition of local value named '" +
2334
/// GetBB - Get a basic block with the specified name or ID, creating a
2335
/// forward reference record if needed.
2336
BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
2338
return dyn_cast_or_null<BasicBlock>(GetVal(Name,
2339
Type::getLabelTy(F.getContext()), Loc));
2342
BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
2343
return dyn_cast_or_null<BasicBlock>(GetVal(ID,
2344
Type::getLabelTy(F.getContext()), Loc));
2347
/// DefineBB - Define the specified basic block, which is either named or
2348
/// unnamed. If there is an error, this returns null otherwise it returns
2349
/// the block being defined.
2350
BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
2354
BB = GetBB(NumberedVals.size(), Loc);
2356
BB = GetBB(Name, Loc);
2357
if (!BB) return nullptr; // Already diagnosed error.
2359
// Move the block to the end of the function. Forward ref'd blocks are
2360
// inserted wherever they happen to be referenced.
2361
F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
2363
// Remove the block from forward ref sets.
2365
ForwardRefValIDs.erase(NumberedVals.size());
2366
NumberedVals.push_back(BB);
2368
// BB forward references are already in the function symbol table.
2369
ForwardRefVals.erase(Name);
2375
//===----------------------------------------------------------------------===//
2377
//===----------------------------------------------------------------------===//
2379
/// ParseValID - Parse an abstract value that doesn't necessarily have a
2380
/// type implied. For example, if we parse "4" we don't know what integer type
2381
/// it has. The value will later be combined with its type and checked for
2382
/// sanity. PFS is used to convert function-local operands of metadata (since
2383
/// metadata operands are not just parsed here but also converted to values).
2384
/// PFS can be null when we are not parsing metadata values inside a function.
2385
bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
2386
ID.Loc = Lex.getLoc();
2387
switch (Lex.getKind()) {
2388
default: return TokError("expected value token");
2389
case lltok::GlobalID: // @42
2390
ID.UIntVal = Lex.getUIntVal();
2391
ID.Kind = ValID::t_GlobalID;
2393
case lltok::GlobalVar: // @foo
2394
ID.StrVal = Lex.getStrVal();
2395
ID.Kind = ValID::t_GlobalName;
2397
case lltok::LocalVarID: // %42
2398
ID.UIntVal = Lex.getUIntVal();
2399
ID.Kind = ValID::t_LocalID;
2401
case lltok::LocalVar: // %foo
2402
ID.StrVal = Lex.getStrVal();
2403
ID.Kind = ValID::t_LocalName;
2406
ID.APSIntVal = Lex.getAPSIntVal();
2407
ID.Kind = ValID::t_APSInt;
2409
case lltok::APFloat:
2410
ID.APFloatVal = Lex.getAPFloatVal();
2411
ID.Kind = ValID::t_APFloat;
2413
case lltok::kw_true:
2414
ID.ConstantVal = ConstantInt::getTrue(Context);
2415
ID.Kind = ValID::t_Constant;
2417
case lltok::kw_false:
2418
ID.ConstantVal = ConstantInt::getFalse(Context);
2419
ID.Kind = ValID::t_Constant;
2421
case lltok::kw_null: ID.Kind = ValID::t_Null; break;
2422
case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
2423
case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
2425
case lltok::lbrace: {
2426
// ValID ::= '{' ConstVector '}'
2428
SmallVector<Constant*, 16> Elts;
2429
if (ParseGlobalValueVector(Elts) ||
2430
ParseToken(lltok::rbrace, "expected end of struct constant"))
2433
ID.ConstantStructElts = new Constant*[Elts.size()];
2434
ID.UIntVal = Elts.size();
2435
memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2436
ID.Kind = ValID::t_ConstantStruct;
2440
// ValID ::= '<' ConstVector '>' --> Vector.
2441
// ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
2443
bool isPackedStruct = EatIfPresent(lltok::lbrace);
2445
SmallVector<Constant*, 16> Elts;
2446
LocTy FirstEltLoc = Lex.getLoc();
2447
if (ParseGlobalValueVector(Elts) ||
2449
ParseToken(lltok::rbrace, "expected end of packed struct")) ||
2450
ParseToken(lltok::greater, "expected end of constant"))
2453
if (isPackedStruct) {
2454
ID.ConstantStructElts = new Constant*[Elts.size()];
2455
memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
2456
ID.UIntVal = Elts.size();
2457
ID.Kind = ValID::t_PackedConstantStruct;
2462
return Error(ID.Loc, "constant vector must not be empty");
2464
if (!Elts[0]->getType()->isIntegerTy() &&
2465
!Elts[0]->getType()->isFloatingPointTy() &&
2466
!Elts[0]->getType()->isPointerTy())
2467
return Error(FirstEltLoc,
2468
"vector elements must have integer, pointer or floating point type");
2470
// Verify that all the vector elements have the same type.
2471
for (unsigned i = 1, e = Elts.size(); i != e; ++i)
2472
if (Elts[i]->getType() != Elts[0]->getType())
2473
return Error(FirstEltLoc,
2474
"vector element #" + Twine(i) +
2475
" is not of type '" + getTypeString(Elts[0]->getType()));
2477
ID.ConstantVal = ConstantVector::get(Elts);
2478
ID.Kind = ValID::t_Constant;
2481
case lltok::lsquare: { // Array Constant
2483
SmallVector<Constant*, 16> Elts;
2484
LocTy FirstEltLoc = Lex.getLoc();
2485
if (ParseGlobalValueVector(Elts) ||
2486
ParseToken(lltok::rsquare, "expected end of array constant"))
2489
// Handle empty element.
2491
// Use undef instead of an array because it's inconvenient to determine
2492
// the element type at this point, there being no elements to examine.
2493
ID.Kind = ValID::t_EmptyArray;
2497
if (!Elts[0]->getType()->isFirstClassType())
2498
return Error(FirstEltLoc, "invalid array element type: " +
2499
getTypeString(Elts[0]->getType()));
2501
ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
2503
// Verify all elements are correct type!
2504
for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
2505
if (Elts[i]->getType() != Elts[0]->getType())
2506
return Error(FirstEltLoc,
2507
"array element #" + Twine(i) +
2508
" is not of type '" + getTypeString(Elts[0]->getType()));
2511
ID.ConstantVal = ConstantArray::get(ATy, Elts);
2512
ID.Kind = ValID::t_Constant;
2515
case lltok::kw_c: // c "foo"
2517
ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
2519
if (ParseToken(lltok::StringConstant, "expected string")) return true;
2520
ID.Kind = ValID::t_Constant;
2523
case lltok::kw_asm: {
2524
// ValID ::= 'asm' SideEffect? AlignStack? IntelDialect? STRINGCONSTANT ','
2526
bool HasSideEffect, AlignStack, AsmDialect;
2528
if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
2529
ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
2530
ParseOptionalToken(lltok::kw_inteldialect, AsmDialect) ||
2531
ParseStringConstant(ID.StrVal) ||
2532
ParseToken(lltok::comma, "expected comma in inline asm expression") ||
2533
ParseToken(lltok::StringConstant, "expected constraint string"))
2535
ID.StrVal2 = Lex.getStrVal();
2536
ID.UIntVal = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1) |
2537
(unsigned(AsmDialect)<<2);
2538
ID.Kind = ValID::t_InlineAsm;
2542
case lltok::kw_blockaddress: {
2543
// ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
2548
if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
2550
ParseToken(lltok::comma, "expected comma in block address expression")||
2551
ParseValID(Label) ||
2552
ParseToken(lltok::rparen, "expected ')' in block address expression"))
2555
if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
2556
return Error(Fn.Loc, "expected function name in blockaddress");
2557
if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
2558
return Error(Label.Loc, "expected basic block name in blockaddress");
2560
// Try to find the function (but skip it if it's forward-referenced).
2561
GlobalValue *GV = nullptr;
2562
if (Fn.Kind == ValID::t_GlobalID) {
2563
if (Fn.UIntVal < NumberedVals.size())
2564
GV = NumberedVals[Fn.UIntVal];
2565
} else if (!ForwardRefVals.count(Fn.StrVal)) {
2566
GV = M->getNamedValue(Fn.StrVal);
2568
Function *F = nullptr;
2570
// Confirm that it's actually a function with a definition.
2571
if (!isa<Function>(GV))
2572
return Error(Fn.Loc, "expected function name in blockaddress");
2573
F = cast<Function>(GV);
2574
if (F->isDeclaration())
2575
return Error(Fn.Loc, "cannot take blockaddress inside a declaration");
2579
// Make a global variable as a placeholder for this reference.
2580
GlobalValue *&FwdRef =
2581
ForwardRefBlockAddresses.insert(std::make_pair(
2583
std::map<ValID, GlobalValue *>()))
2584
.first->second.insert(std::make_pair(std::move(Label), nullptr))
2587
FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context), false,
2588
GlobalValue::InternalLinkage, nullptr, "");
2589
ID.ConstantVal = FwdRef;
2590
ID.Kind = ValID::t_Constant;
2594
// We found the function; now find the basic block. Don't use PFS, since we
2595
// might be inside a constant expression.
2597
if (BlockAddressPFS && F == &BlockAddressPFS->getFunction()) {
2598
if (Label.Kind == ValID::t_LocalID)
2599
BB = BlockAddressPFS->GetBB(Label.UIntVal, Label.Loc);
2601
BB = BlockAddressPFS->GetBB(Label.StrVal, Label.Loc);
2603
return Error(Label.Loc, "referenced value is not a basic block");
2605
if (Label.Kind == ValID::t_LocalID)
2606
return Error(Label.Loc, "cannot take address of numeric label after "
2607
"the function is defined");
2608
BB = dyn_cast_or_null<BasicBlock>(
2609
F->getValueSymbolTable().lookup(Label.StrVal));
2611
return Error(Label.Loc, "referenced value is not a basic block");
2614
ID.ConstantVal = BlockAddress::get(F, BB);
2615
ID.Kind = ValID::t_Constant;
2619
case lltok::kw_trunc:
2620
case lltok::kw_zext:
2621
case lltok::kw_sext:
2622
case lltok::kw_fptrunc:
2623
case lltok::kw_fpext:
2624
case lltok::kw_bitcast:
2625
case lltok::kw_addrspacecast:
2626
case lltok::kw_uitofp:
2627
case lltok::kw_sitofp:
2628
case lltok::kw_fptoui:
2629
case lltok::kw_fptosi:
2630
case lltok::kw_inttoptr:
2631
case lltok::kw_ptrtoint: {
2632
unsigned Opc = Lex.getUIntVal();
2633
Type *DestTy = nullptr;
2636
if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
2637
ParseGlobalTypeAndValue(SrcVal) ||
2638
ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
2639
ParseType(DestTy) ||
2640
ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
2642
if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
2643
return Error(ID.Loc, "invalid cast opcode for cast from '" +
2644
getTypeString(SrcVal->getType()) + "' to '" +
2645
getTypeString(DestTy) + "'");
2646
ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
2648
ID.Kind = ValID::t_Constant;
2651
case lltok::kw_extractvalue: {
2654
SmallVector<unsigned, 4> Indices;
2655
if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
2656
ParseGlobalTypeAndValue(Val) ||
2657
ParseIndexList(Indices) ||
2658
ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
2661
if (!Val->getType()->isAggregateType())
2662
return Error(ID.Loc, "extractvalue operand must be aggregate type");
2663
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
2664
return Error(ID.Loc, "invalid indices for extractvalue");
2665
ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
2666
ID.Kind = ValID::t_Constant;
2669
case lltok::kw_insertvalue: {
2671
Constant *Val0, *Val1;
2672
SmallVector<unsigned, 4> Indices;
2673
if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
2674
ParseGlobalTypeAndValue(Val0) ||
2675
ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
2676
ParseGlobalTypeAndValue(Val1) ||
2677
ParseIndexList(Indices) ||
2678
ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
2680
if (!Val0->getType()->isAggregateType())
2681
return Error(ID.Loc, "insertvalue operand must be aggregate type");
2683
ExtractValueInst::getIndexedType(Val0->getType(), Indices);
2685
return Error(ID.Loc, "invalid indices for insertvalue");
2686
if (IndexedType != Val1->getType())
2687
return Error(ID.Loc, "insertvalue operand and field disagree in type: '" +
2688
getTypeString(Val1->getType()) +
2689
"' instead of '" + getTypeString(IndexedType) +
2691
ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
2692
ID.Kind = ValID::t_Constant;
2695
case lltok::kw_icmp:
2696
case lltok::kw_fcmp: {
2697
unsigned PredVal, Opc = Lex.getUIntVal();
2698
Constant *Val0, *Val1;
2700
if (ParseCmpPredicate(PredVal, Opc) ||
2701
ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2702
ParseGlobalTypeAndValue(Val0) ||
2703
ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2704
ParseGlobalTypeAndValue(Val1) ||
2705
ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2708
if (Val0->getType() != Val1->getType())
2709
return Error(ID.Loc, "compare operands must have the same type");
2711
CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2713
if (Opc == Instruction::FCmp) {
2714
if (!Val0->getType()->isFPOrFPVectorTy())
2715
return Error(ID.Loc, "fcmp requires floating point operands");
2716
ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2718
assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2719
if (!Val0->getType()->isIntOrIntVectorTy() &&
2720
!Val0->getType()->getScalarType()->isPointerTy())
2721
return Error(ID.Loc, "icmp requires pointer or integer operands");
2722
ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2724
ID.Kind = ValID::t_Constant;
2728
// Binary Operators.
2730
case lltok::kw_fadd:
2732
case lltok::kw_fsub:
2734
case lltok::kw_fmul:
2735
case lltok::kw_udiv:
2736
case lltok::kw_sdiv:
2737
case lltok::kw_fdiv:
2738
case lltok::kw_urem:
2739
case lltok::kw_srem:
2740
case lltok::kw_frem:
2742
case lltok::kw_lshr:
2743
case lltok::kw_ashr: {
2747
unsigned Opc = Lex.getUIntVal();
2748
Constant *Val0, *Val1;
2750
LocTy ModifierLoc = Lex.getLoc();
2751
if (Opc == Instruction::Add || Opc == Instruction::Sub ||
2752
Opc == Instruction::Mul || Opc == Instruction::Shl) {
2753
if (EatIfPresent(lltok::kw_nuw))
2755
if (EatIfPresent(lltok::kw_nsw)) {
2757
if (EatIfPresent(lltok::kw_nuw))
2760
} else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
2761
Opc == Instruction::LShr || Opc == Instruction::AShr) {
2762
if (EatIfPresent(lltok::kw_exact))
2765
if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2766
ParseGlobalTypeAndValue(Val0) ||
2767
ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2768
ParseGlobalTypeAndValue(Val1) ||
2769
ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2771
if (Val0->getType() != Val1->getType())
2772
return Error(ID.Loc, "operands of constexpr must have same type");
2773
if (!Val0->getType()->isIntOrIntVectorTy()) {
2775
return Error(ModifierLoc, "nuw only applies to integer operations");
2777
return Error(ModifierLoc, "nsw only applies to integer operations");
2779
// Check that the type is valid for the operator.
2781
case Instruction::Add:
2782
case Instruction::Sub:
2783
case Instruction::Mul:
2784
case Instruction::UDiv:
2785
case Instruction::SDiv:
2786
case Instruction::URem:
2787
case Instruction::SRem:
2788
case Instruction::Shl:
2789
case Instruction::AShr:
2790
case Instruction::LShr:
2791
if (!Val0->getType()->isIntOrIntVectorTy())
2792
return Error(ID.Loc, "constexpr requires integer operands");
2794
case Instruction::FAdd:
2795
case Instruction::FSub:
2796
case Instruction::FMul:
2797
case Instruction::FDiv:
2798
case Instruction::FRem:
2799
if (!Val0->getType()->isFPOrFPVectorTy())
2800
return Error(ID.Loc, "constexpr requires fp operands");
2802
default: llvm_unreachable("Unknown binary operator!");
2805
if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
2806
if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
2807
if (Exact) Flags |= PossiblyExactOperator::IsExact;
2808
Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
2810
ID.Kind = ValID::t_Constant;
2814
// Logical Operations
2817
case lltok::kw_xor: {
2818
unsigned Opc = Lex.getUIntVal();
2819
Constant *Val0, *Val1;
2821
if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2822
ParseGlobalTypeAndValue(Val0) ||
2823
ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2824
ParseGlobalTypeAndValue(Val1) ||
2825
ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2827
if (Val0->getType() != Val1->getType())
2828
return Error(ID.Loc, "operands of constexpr must have same type");
2829
if (!Val0->getType()->isIntOrIntVectorTy())
2830
return Error(ID.Loc,
2831
"constexpr requires integer or integer vector operands");
2832
ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2833
ID.Kind = ValID::t_Constant;
2837
case lltok::kw_getelementptr:
2838
case lltok::kw_shufflevector:
2839
case lltok::kw_insertelement:
2840
case lltok::kw_extractelement:
2841
case lltok::kw_select: {
2842
unsigned Opc = Lex.getUIntVal();
2843
SmallVector<Constant*, 16> Elts;
2844
bool InBounds = false;
2848
if (Opc == Instruction::GetElementPtr)
2849
InBounds = EatIfPresent(lltok::kw_inbounds);
2851
if (ParseToken(lltok::lparen, "expected '(' in constantexpr"))
2854
LocTy ExplicitTypeLoc = Lex.getLoc();
2855
if (Opc == Instruction::GetElementPtr) {
2856
if (ParseType(Ty) ||
2857
ParseToken(lltok::comma, "expected comma after getelementptr's type"))
2861
if (ParseGlobalValueVector(Elts) ||
2862
ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2865
if (Opc == Instruction::GetElementPtr) {
2866
if (Elts.size() == 0 ||
2867
!Elts[0]->getType()->getScalarType()->isPointerTy())
2868
return Error(ID.Loc, "base of getelementptr must be a pointer");
2870
Type *BaseType = Elts[0]->getType();
2871
auto *BasePointerType = cast<PointerType>(BaseType->getScalarType());
2872
if (Ty != BasePointerType->getElementType())
2875
"explicit pointee type doesn't match operand's pointee type");
2877
ArrayRef<Constant *> Indices(Elts.begin() + 1, Elts.end());
2878
for (Constant *Val : Indices) {
2879
Type *ValTy = Val->getType();
2880
if (!ValTy->getScalarType()->isIntegerTy())
2881
return Error(ID.Loc, "getelementptr index must be an integer");
2882
if (ValTy->isVectorTy() != BaseType->isVectorTy())
2883
return Error(ID.Loc, "getelementptr index type missmatch");
2884
if (ValTy->isVectorTy()) {
2885
unsigned ValNumEl = ValTy->getVectorNumElements();
2886
unsigned PtrNumEl = BaseType->getVectorNumElements();
2887
if (ValNumEl != PtrNumEl)
2890
"getelementptr vector index has a wrong number of elements");
2894
SmallPtrSet<const Type*, 4> Visited;
2895
if (!Indices.empty() && !Ty->isSized(&Visited))
2896
return Error(ID.Loc, "base element of getelementptr must be sized");
2898
if (!GetElementPtrInst::getIndexedType(Ty, Indices))
2899
return Error(ID.Loc, "invalid getelementptr indices");
2901
ConstantExpr::getGetElementPtr(Ty, Elts[0], Indices, InBounds);
2902
} else if (Opc == Instruction::Select) {
2903
if (Elts.size() != 3)
2904
return Error(ID.Loc, "expected three operands to select");
2905
if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2907
return Error(ID.Loc, Reason);
2908
ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2909
} else if (Opc == Instruction::ShuffleVector) {
2910
if (Elts.size() != 3)
2911
return Error(ID.Loc, "expected three operands to shufflevector");
2912
if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2913
return Error(ID.Loc, "invalid operands to shufflevector");
2915
ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2916
} else if (Opc == Instruction::ExtractElement) {
2917
if (Elts.size() != 2)
2918
return Error(ID.Loc, "expected two operands to extractelement");
2919
if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2920
return Error(ID.Loc, "invalid extractelement operands");
2921
ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2923
assert(Opc == Instruction::InsertElement && "Unknown opcode");
2924
if (Elts.size() != 3)
2925
return Error(ID.Loc, "expected three operands to insertelement");
2926
if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2927
return Error(ID.Loc, "invalid insertelement operands");
2929
ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2932
ID.Kind = ValID::t_Constant;
2941
/// ParseGlobalValue - Parse a global value with the specified type.
2942
bool LLParser::ParseGlobalValue(Type *Ty, Constant *&C) {
2946
bool Parsed = ParseValID(ID) ||
2947
ConvertValIDToValue(Ty, ID, V, nullptr);
2948
if (V && !(C = dyn_cast<Constant>(V)))
2949
return Error(ID.Loc, "global values must be constants");
2953
bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2955
return ParseType(Ty) ||
2956
ParseGlobalValue(Ty, V);
2959
bool LLParser::parseOptionalComdat(StringRef GlobalName, Comdat *&C) {
2962
LocTy KwLoc = Lex.getLoc();
2963
if (!EatIfPresent(lltok::kw_comdat))
2966
if (EatIfPresent(lltok::lparen)) {
2967
if (Lex.getKind() != lltok::ComdatVar)
2968
return TokError("expected comdat variable");
2969
C = getComdat(Lex.getStrVal(), Lex.getLoc());
2971
if (ParseToken(lltok::rparen, "expected ')' after comdat var"))
2974
if (GlobalName.empty())
2975
return TokError("comdat cannot be unnamed");
2976
C = getComdat(GlobalName, KwLoc);
2982
/// ParseGlobalValueVector
2984
/// ::= TypeAndValue (',' TypeAndValue)*
2985
bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant *> &Elts) {
2987
if (Lex.getKind() == lltok::rbrace ||
2988
Lex.getKind() == lltok::rsquare ||
2989
Lex.getKind() == lltok::greater ||
2990
Lex.getKind() == lltok::rparen)
2994
if (ParseGlobalTypeAndValue(C)) return true;
2997
while (EatIfPresent(lltok::comma)) {
2998
if (ParseGlobalTypeAndValue(C)) return true;
3005
bool LLParser::ParseMDTuple(MDNode *&MD, bool IsDistinct) {
3006
SmallVector<Metadata *, 16> Elts;
3007
if (ParseMDNodeVector(Elts))
3010
MD = (IsDistinct ? MDTuple::getDistinct : MDTuple::get)(Context, Elts);
3017
/// ::= !DILocation(...)
3018
bool LLParser::ParseMDNode(MDNode *&N) {
3019
if (Lex.getKind() == lltok::MetadataVar)
3020
return ParseSpecializedMDNode(N);
3022
return ParseToken(lltok::exclaim, "expected '!' here") ||
3026
bool LLParser::ParseMDNodeTail(MDNode *&N) {
3028
if (Lex.getKind() == lltok::lbrace)
3029
return ParseMDTuple(N);
3032
return ParseMDNodeID(N);
3037
/// Structure to represent an optional metadata field.
3038
template <class FieldTy> struct MDFieldImpl {
3039
typedef MDFieldImpl ImplTy;
3043
void assign(FieldTy Val) {
3045
this->Val = std::move(Val);
3048
explicit MDFieldImpl(FieldTy Default)
3049
: Val(std::move(Default)), Seen(false) {}
3052
struct MDUnsignedField : public MDFieldImpl<uint64_t> {
3055
MDUnsignedField(uint64_t Default = 0, uint64_t Max = UINT64_MAX)
3056
: ImplTy(Default), Max(Max) {}
3058
struct LineField : public MDUnsignedField {
3059
LineField() : MDUnsignedField(0, UINT32_MAX) {}
3061
struct ColumnField : public MDUnsignedField {
3062
ColumnField() : MDUnsignedField(0, UINT16_MAX) {}
3064
struct DwarfTagField : public MDUnsignedField {
3065
DwarfTagField() : MDUnsignedField(0, dwarf::DW_TAG_hi_user) {}
3066
DwarfTagField(dwarf::Tag DefaultTag)
3067
: MDUnsignedField(DefaultTag, dwarf::DW_TAG_hi_user) {}
3069
struct DwarfAttEncodingField : public MDUnsignedField {
3070
DwarfAttEncodingField() : MDUnsignedField(0, dwarf::DW_ATE_hi_user) {}
3072
struct DwarfVirtualityField : public MDUnsignedField {
3073
DwarfVirtualityField() : MDUnsignedField(0, dwarf::DW_VIRTUALITY_max) {}
3075
struct DwarfLangField : public MDUnsignedField {
3076
DwarfLangField() : MDUnsignedField(0, dwarf::DW_LANG_hi_user) {}
3079
struct DIFlagField : public MDUnsignedField {
3080
DIFlagField() : MDUnsignedField(0, UINT32_MAX) {}
3083
struct MDSignedField : public MDFieldImpl<int64_t> {
3087
MDSignedField(int64_t Default = 0)
3088
: ImplTy(Default), Min(INT64_MIN), Max(INT64_MAX) {}
3089
MDSignedField(int64_t Default, int64_t Min, int64_t Max)
3090
: ImplTy(Default), Min(Min), Max(Max) {}
3093
struct MDBoolField : public MDFieldImpl<bool> {
3094
MDBoolField(bool Default = false) : ImplTy(Default) {}
3096
struct MDField : public MDFieldImpl<Metadata *> {
3099
MDField(bool AllowNull = true) : ImplTy(nullptr), AllowNull(AllowNull) {}
3101
struct MDConstant : public MDFieldImpl<ConstantAsMetadata *> {
3102
MDConstant() : ImplTy(nullptr) {}
3104
struct MDStringField : public MDFieldImpl<MDString *> {
3106
MDStringField(bool AllowEmpty = true)
3107
: ImplTy(nullptr), AllowEmpty(AllowEmpty) {}
3109
struct MDFieldList : public MDFieldImpl<SmallVector<Metadata *, 4>> {
3110
MDFieldList() : ImplTy(SmallVector<Metadata *, 4>()) {}
3118
bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3119
MDUnsignedField &Result) {
3120
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3121
return TokError("expected unsigned integer");
3123
auto &U = Lex.getAPSIntVal();
3124
if (U.ugt(Result.Max))
3125
return TokError("value for '" + Name + "' too large, limit is " +
3127
Result.assign(U.getZExtValue());
3128
assert(Result.Val <= Result.Max && "Expected value in range");
3134
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, LineField &Result) {
3135
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3138
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, ColumnField &Result) {
3139
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3143
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfTagField &Result) {
3144
if (Lex.getKind() == lltok::APSInt)
3145
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3147
if (Lex.getKind() != lltok::DwarfTag)
3148
return TokError("expected DWARF tag");
3150
unsigned Tag = dwarf::getTag(Lex.getStrVal());
3151
if (Tag == dwarf::DW_TAG_invalid)
3152
return TokError("invalid DWARF tag" + Twine(" '") + Lex.getStrVal() + "'");
3153
assert(Tag <= Result.Max && "Expected valid DWARF tag");
3161
bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3162
DwarfVirtualityField &Result) {
3163
if (Lex.getKind() == lltok::APSInt)
3164
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3166
if (Lex.getKind() != lltok::DwarfVirtuality)
3167
return TokError("expected DWARF virtuality code");
3169
unsigned Virtuality = dwarf::getVirtuality(Lex.getStrVal());
3171
return TokError("invalid DWARF virtuality code" + Twine(" '") +
3172
Lex.getStrVal() + "'");
3173
assert(Virtuality <= Result.Max && "Expected valid DWARF virtuality code");
3174
Result.assign(Virtuality);
3180
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DwarfLangField &Result) {
3181
if (Lex.getKind() == lltok::APSInt)
3182
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3184
if (Lex.getKind() != lltok::DwarfLang)
3185
return TokError("expected DWARF language");
3187
unsigned Lang = dwarf::getLanguage(Lex.getStrVal());
3189
return TokError("invalid DWARF language" + Twine(" '") + Lex.getStrVal() +
3191
assert(Lang <= Result.Max && "Expected valid DWARF language");
3192
Result.assign(Lang);
3198
bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3199
DwarfAttEncodingField &Result) {
3200
if (Lex.getKind() == lltok::APSInt)
3201
return ParseMDField(Loc, Name, static_cast<MDUnsignedField &>(Result));
3203
if (Lex.getKind() != lltok::DwarfAttEncoding)
3204
return TokError("expected DWARF type attribute encoding");
3206
unsigned Encoding = dwarf::getAttributeEncoding(Lex.getStrVal());
3208
return TokError("invalid DWARF type attribute encoding" + Twine(" '") +
3209
Lex.getStrVal() + "'");
3210
assert(Encoding <= Result.Max && "Expected valid DWARF language");
3211
Result.assign(Encoding);
3218
/// ::= DIFlagVector
3219
/// ::= DIFlagVector '|' DIFlagFwdDecl '|' uint32 '|' DIFlagPublic
3221
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, DIFlagField &Result) {
3222
assert(Result.Max == UINT32_MAX && "Expected only 32-bits");
3224
// Parser for a single flag.
3225
auto parseFlag = [&](unsigned &Val) {
3226
if (Lex.getKind() == lltok::APSInt && !Lex.getAPSIntVal().isSigned())
3227
return ParseUInt32(Val);
3229
if (Lex.getKind() != lltok::DIFlag)
3230
return TokError("expected debug info flag");
3232
Val = DINode::getFlag(Lex.getStrVal());
3234
return TokError(Twine("invalid debug info flag flag '") +
3235
Lex.getStrVal() + "'");
3240
// Parse the flags and combine them together.
3241
unsigned Combined = 0;
3247
} while (EatIfPresent(lltok::bar));
3249
Result.assign(Combined);
3254
bool LLParser::ParseMDField(LocTy Loc, StringRef Name,
3255
MDSignedField &Result) {
3256
if (Lex.getKind() != lltok::APSInt)
3257
return TokError("expected signed integer");
3259
auto &S = Lex.getAPSIntVal();
3261
return TokError("value for '" + Name + "' too small, limit is " +
3264
return TokError("value for '" + Name + "' too large, limit is " +
3266
Result.assign(S.getExtValue());
3267
assert(Result.Val >= Result.Min && "Expected value in range");
3268
assert(Result.Val <= Result.Max && "Expected value in range");
3274
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDBoolField &Result) {
3275
switch (Lex.getKind()) {
3277
return TokError("expected 'true' or 'false'");
3278
case lltok::kw_true:
3279
Result.assign(true);
3281
case lltok::kw_false:
3282
Result.assign(false);
3290
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDField &Result) {
3291
if (Lex.getKind() == lltok::kw_null) {
3292
if (!Result.AllowNull)
3293
return TokError("'" + Name + "' cannot be null");
3295
Result.assign(nullptr);
3300
if (ParseMetadata(MD, nullptr))
3308
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDConstant &Result) {
3310
if (ParseValueAsMetadata(MD, "expected constant", nullptr))
3313
Result.assign(cast<ConstantAsMetadata>(MD));
3318
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDStringField &Result) {
3319
LocTy ValueLoc = Lex.getLoc();
3321
if (ParseStringConstant(S))
3324
if (!Result.AllowEmpty && S.empty())
3325
return Error(ValueLoc, "'" + Name + "' cannot be empty");
3327
Result.assign(S.empty() ? nullptr : MDString::get(Context, S));
3332
bool LLParser::ParseMDField(LocTy Loc, StringRef Name, MDFieldList &Result) {
3333
SmallVector<Metadata *, 4> MDs;
3334
if (ParseMDNodeVector(MDs))
3337
Result.assign(std::move(MDs));
3341
} // end namespace llvm
3343
template <class ParserTy>
3344
bool LLParser::ParseMDFieldsImplBody(ParserTy parseField) {
3346
if (Lex.getKind() != lltok::LabelStr)
3347
return TokError("expected field label here");
3351
} while (EatIfPresent(lltok::comma));
3356
template <class ParserTy>
3357
bool LLParser::ParseMDFieldsImpl(ParserTy parseField, LocTy &ClosingLoc) {
3358
assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3361
if (ParseToken(lltok::lparen, "expected '(' here"))
3363
if (Lex.getKind() != lltok::rparen)
3364
if (ParseMDFieldsImplBody(parseField))
3367
ClosingLoc = Lex.getLoc();
3368
return ParseToken(lltok::rparen, "expected ')' here");
3371
template <class FieldTy>
3372
bool LLParser::ParseMDField(StringRef Name, FieldTy &Result) {
3374
return TokError("field '" + Name + "' cannot be specified more than once");
3376
LocTy Loc = Lex.getLoc();
3378
return ParseMDField(Loc, Name, Result);
3381
bool LLParser::ParseSpecializedMDNode(MDNode *&N, bool IsDistinct) {
3382
assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3384
#define HANDLE_SPECIALIZED_MDNODE_LEAF(CLASS) \
3385
if (Lex.getStrVal() == #CLASS) \
3386
return Parse##CLASS(N, IsDistinct);
3387
#include "llvm/IR/Metadata.def"
3389
return TokError("expected metadata type");
3392
#define DECLARE_FIELD(NAME, TYPE, INIT) TYPE NAME INIT
3393
#define NOP_FIELD(NAME, TYPE, INIT)
3394
#define REQUIRE_FIELD(NAME, TYPE, INIT) \
3396
return Error(ClosingLoc, "missing required field '" #NAME "'");
3397
#define PARSE_MD_FIELD(NAME, TYPE, DEFAULT) \
3398
if (Lex.getStrVal() == #NAME) \
3399
return ParseMDField(#NAME, NAME);
3400
#define PARSE_MD_FIELDS() \
3401
VISIT_MD_FIELDS(DECLARE_FIELD, DECLARE_FIELD) \
3404
if (ParseMDFieldsImpl([&]() -> bool { \
3405
VISIT_MD_FIELDS(PARSE_MD_FIELD, PARSE_MD_FIELD) \
3406
return TokError(Twine("invalid field '") + Lex.getStrVal() + "'"); \
3409
VISIT_MD_FIELDS(NOP_FIELD, REQUIRE_FIELD) \
3411
#define GET_OR_DISTINCT(CLASS, ARGS) \
3412
(IsDistinct ? CLASS::getDistinct ARGS : CLASS::get ARGS)
3414
/// ParseDILocationFields:
3415
/// ::= !DILocation(line: 43, column: 8, scope: !5, inlinedAt: !6)
3416
bool LLParser::ParseDILocation(MDNode *&Result, bool IsDistinct) {
3417
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3418
OPTIONAL(line, LineField, ); \
3419
OPTIONAL(column, ColumnField, ); \
3420
REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3421
OPTIONAL(inlinedAt, MDField, );
3423
#undef VISIT_MD_FIELDS
3425
Result = GET_OR_DISTINCT(
3426
DILocation, (Context, line.Val, column.Val, scope.Val, inlinedAt.Val));
3430
/// ParseGenericDINode:
3431
/// ::= !GenericDINode(tag: 15, header: "...", operands: {...})
3432
bool LLParser::ParseGenericDINode(MDNode *&Result, bool IsDistinct) {
3433
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3434
REQUIRED(tag, DwarfTagField, ); \
3435
OPTIONAL(header, MDStringField, ); \
3436
OPTIONAL(operands, MDFieldList, );
3438
#undef VISIT_MD_FIELDS
3440
Result = GET_OR_DISTINCT(GenericDINode,
3441
(Context, tag.Val, header.Val, operands.Val));
3445
/// ParseDISubrange:
3446
/// ::= !DISubrange(count: 30, lowerBound: 2)
3447
bool LLParser::ParseDISubrange(MDNode *&Result, bool IsDistinct) {
3448
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3449
REQUIRED(count, MDSignedField, (-1, -1, INT64_MAX)); \
3450
OPTIONAL(lowerBound, MDSignedField, );
3452
#undef VISIT_MD_FIELDS
3454
Result = GET_OR_DISTINCT(DISubrange, (Context, count.Val, lowerBound.Val));
3458
/// ParseDIEnumerator:
3459
/// ::= !DIEnumerator(value: 30, name: "SomeKind")
3460
bool LLParser::ParseDIEnumerator(MDNode *&Result, bool IsDistinct) {
3461
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3462
REQUIRED(name, MDStringField, ); \
3463
REQUIRED(value, MDSignedField, );
3465
#undef VISIT_MD_FIELDS
3467
Result = GET_OR_DISTINCT(DIEnumerator, (Context, value.Val, name.Val));
3471
/// ParseDIBasicType:
3472
/// ::= !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32)
3473
bool LLParser::ParseDIBasicType(MDNode *&Result, bool IsDistinct) {
3474
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3475
OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_base_type)); \
3476
OPTIONAL(name, MDStringField, ); \
3477
OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3478
OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3479
OPTIONAL(encoding, DwarfAttEncodingField, );
3481
#undef VISIT_MD_FIELDS
3483
Result = GET_OR_DISTINCT(DIBasicType, (Context, tag.Val, name.Val, size.Val,
3484
align.Val, encoding.Val));
3488
/// ParseDIDerivedType:
3489
/// ::= !DIDerivedType(tag: DW_TAG_pointer_type, name: "int", file: !0,
3490
/// line: 7, scope: !1, baseType: !2, size: 32,
3491
/// align: 32, offset: 0, flags: 0, extraData: !3)
3492
bool LLParser::ParseDIDerivedType(MDNode *&Result, bool IsDistinct) {
3493
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3494
REQUIRED(tag, DwarfTagField, ); \
3495
OPTIONAL(name, MDStringField, ); \
3496
OPTIONAL(file, MDField, ); \
3497
OPTIONAL(line, LineField, ); \
3498
OPTIONAL(scope, MDField, ); \
3499
REQUIRED(baseType, MDField, ); \
3500
OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3501
OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3502
OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3503
OPTIONAL(flags, DIFlagField, ); \
3504
OPTIONAL(extraData, MDField, );
3506
#undef VISIT_MD_FIELDS
3508
Result = GET_OR_DISTINCT(DIDerivedType,
3509
(Context, tag.Val, name.Val, file.Val, line.Val,
3510
scope.Val, baseType.Val, size.Val, align.Val,
3511
offset.Val, flags.Val, extraData.Val));
3515
bool LLParser::ParseDICompositeType(MDNode *&Result, bool IsDistinct) {
3516
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3517
REQUIRED(tag, DwarfTagField, ); \
3518
OPTIONAL(name, MDStringField, ); \
3519
OPTIONAL(file, MDField, ); \
3520
OPTIONAL(line, LineField, ); \
3521
OPTIONAL(scope, MDField, ); \
3522
OPTIONAL(baseType, MDField, ); \
3523
OPTIONAL(size, MDUnsignedField, (0, UINT64_MAX)); \
3524
OPTIONAL(align, MDUnsignedField, (0, UINT64_MAX)); \
3525
OPTIONAL(offset, MDUnsignedField, (0, UINT64_MAX)); \
3526
OPTIONAL(flags, DIFlagField, ); \
3527
OPTIONAL(elements, MDField, ); \
3528
OPTIONAL(runtimeLang, DwarfLangField, ); \
3529
OPTIONAL(vtableHolder, MDField, ); \
3530
OPTIONAL(templateParams, MDField, ); \
3531
OPTIONAL(identifier, MDStringField, );
3533
#undef VISIT_MD_FIELDS
3535
Result = GET_OR_DISTINCT(
3537
(Context, tag.Val, name.Val, file.Val, line.Val, scope.Val, baseType.Val,
3538
size.Val, align.Val, offset.Val, flags.Val, elements.Val,
3539
runtimeLang.Val, vtableHolder.Val, templateParams.Val, identifier.Val));
3543
bool LLParser::ParseDISubroutineType(MDNode *&Result, bool IsDistinct) {
3544
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3545
OPTIONAL(flags, DIFlagField, ); \
3546
REQUIRED(types, MDField, );
3548
#undef VISIT_MD_FIELDS
3550
Result = GET_OR_DISTINCT(DISubroutineType, (Context, flags.Val, types.Val));
3554
/// ParseDIFileType:
3555
/// ::= !DIFileType(filename: "path/to/file", directory: "/path/to/dir")
3556
bool LLParser::ParseDIFile(MDNode *&Result, bool IsDistinct) {
3557
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3558
REQUIRED(filename, MDStringField, ); \
3559
REQUIRED(directory, MDStringField, );
3561
#undef VISIT_MD_FIELDS
3563
Result = GET_OR_DISTINCT(DIFile, (Context, filename.Val, directory.Val));
3567
/// ParseDICompileUnit:
3568
/// ::= !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang",
3569
/// isOptimized: true, flags: "-O2", runtimeVersion: 1,
3570
/// splitDebugFilename: "abc.debug", emissionKind: 1,
3571
/// enums: !1, retainedTypes: !2, subprograms: !3,
3572
/// globals: !4, imports: !5, dwoId: 0x0abcd)
3573
bool LLParser::ParseDICompileUnit(MDNode *&Result, bool IsDistinct) {
3574
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3575
REQUIRED(language, DwarfLangField, ); \
3576
REQUIRED(file, MDField, (/* AllowNull */ false)); \
3577
OPTIONAL(producer, MDStringField, ); \
3578
OPTIONAL(isOptimized, MDBoolField, ); \
3579
OPTIONAL(flags, MDStringField, ); \
3580
OPTIONAL(runtimeVersion, MDUnsignedField, (0, UINT32_MAX)); \
3581
OPTIONAL(splitDebugFilename, MDStringField, ); \
3582
OPTIONAL(emissionKind, MDUnsignedField, (0, UINT32_MAX)); \
3583
OPTIONAL(enums, MDField, ); \
3584
OPTIONAL(retainedTypes, MDField, ); \
3585
OPTIONAL(subprograms, MDField, ); \
3586
OPTIONAL(globals, MDField, ); \
3587
OPTIONAL(imports, MDField, ); \
3588
OPTIONAL(dwoId, MDUnsignedField, );
3590
#undef VISIT_MD_FIELDS
3592
Result = GET_OR_DISTINCT(DICompileUnit,
3593
(Context, language.Val, file.Val, producer.Val,
3594
isOptimized.Val, flags.Val, runtimeVersion.Val,
3595
splitDebugFilename.Val, emissionKind.Val, enums.Val,
3596
retainedTypes.Val, subprograms.Val, globals.Val,
3597
imports.Val, dwoId.Val));
3601
/// ParseDISubprogram:
3602
/// ::= !DISubprogram(scope: !0, name: "foo", linkageName: "_Zfoo",
3603
/// file: !1, line: 7, type: !2, isLocal: false,
3604
/// isDefinition: true, scopeLine: 8, containingType: !3,
3605
/// virtuality: DW_VIRTUALTIY_pure_virtual,
3606
/// virtualIndex: 10, flags: 11,
3607
/// isOptimized: false, function: void ()* @_Z3foov,
3608
/// templateParams: !4, declaration: !5, variables: !6)
3609
bool LLParser::ParseDISubprogram(MDNode *&Result, bool IsDistinct) {
3610
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3611
OPTIONAL(scope, MDField, ); \
3612
OPTIONAL(name, MDStringField, ); \
3613
OPTIONAL(linkageName, MDStringField, ); \
3614
OPTIONAL(file, MDField, ); \
3615
OPTIONAL(line, LineField, ); \
3616
OPTIONAL(type, MDField, ); \
3617
OPTIONAL(isLocal, MDBoolField, ); \
3618
OPTIONAL(isDefinition, MDBoolField, (true)); \
3619
OPTIONAL(scopeLine, LineField, ); \
3620
OPTIONAL(containingType, MDField, ); \
3621
OPTIONAL(virtuality, DwarfVirtualityField, ); \
3622
OPTIONAL(virtualIndex, MDUnsignedField, (0, UINT32_MAX)); \
3623
OPTIONAL(flags, DIFlagField, ); \
3624
OPTIONAL(isOptimized, MDBoolField, ); \
3625
OPTIONAL(function, MDConstant, ); \
3626
OPTIONAL(templateParams, MDField, ); \
3627
OPTIONAL(declaration, MDField, ); \
3628
OPTIONAL(variables, MDField, );
3630
#undef VISIT_MD_FIELDS
3632
Result = GET_OR_DISTINCT(
3633
DISubprogram, (Context, scope.Val, name.Val, linkageName.Val, file.Val,
3634
line.Val, type.Val, isLocal.Val, isDefinition.Val,
3635
scopeLine.Val, containingType.Val, virtuality.Val,
3636
virtualIndex.Val, flags.Val, isOptimized.Val, function.Val,
3637
templateParams.Val, declaration.Val, variables.Val));
3641
/// ParseDILexicalBlock:
3642
/// ::= !DILexicalBlock(scope: !0, file: !2, line: 7, column: 9)
3643
bool LLParser::ParseDILexicalBlock(MDNode *&Result, bool IsDistinct) {
3644
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3645
REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3646
OPTIONAL(file, MDField, ); \
3647
OPTIONAL(line, LineField, ); \
3648
OPTIONAL(column, ColumnField, );
3650
#undef VISIT_MD_FIELDS
3652
Result = GET_OR_DISTINCT(
3653
DILexicalBlock, (Context, scope.Val, file.Val, line.Val, column.Val));
3657
/// ParseDILexicalBlockFile:
3658
/// ::= !DILexicalBlockFile(scope: !0, file: !2, discriminator: 9)
3659
bool LLParser::ParseDILexicalBlockFile(MDNode *&Result, bool IsDistinct) {
3660
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3661
REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3662
OPTIONAL(file, MDField, ); \
3663
REQUIRED(discriminator, MDUnsignedField, (0, UINT32_MAX));
3665
#undef VISIT_MD_FIELDS
3667
Result = GET_OR_DISTINCT(DILexicalBlockFile,
3668
(Context, scope.Val, file.Val, discriminator.Val));
3672
/// ParseDINamespace:
3673
/// ::= !DINamespace(scope: !0, file: !2, name: "SomeNamespace", line: 9)
3674
bool LLParser::ParseDINamespace(MDNode *&Result, bool IsDistinct) {
3675
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3676
REQUIRED(scope, MDField, ); \
3677
OPTIONAL(file, MDField, ); \
3678
OPTIONAL(name, MDStringField, ); \
3679
OPTIONAL(line, LineField, );
3681
#undef VISIT_MD_FIELDS
3683
Result = GET_OR_DISTINCT(DINamespace,
3684
(Context, scope.Val, file.Val, name.Val, line.Val));
3689
/// ::= !DIModule(scope: !0, name: "SomeModule", configMacros: "-DNDEBUG",
3690
/// includePath: "/usr/include", isysroot: "/")
3691
bool LLParser::ParseDIModule(MDNode *&Result, bool IsDistinct) {
3692
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3693
REQUIRED(scope, MDField, ); \
3694
REQUIRED(name, MDStringField, ); \
3695
OPTIONAL(configMacros, MDStringField, ); \
3696
OPTIONAL(includePath, MDStringField, ); \
3697
OPTIONAL(isysroot, MDStringField, );
3699
#undef VISIT_MD_FIELDS
3701
Result = GET_OR_DISTINCT(DIModule, (Context, scope.Val, name.Val,
3702
configMacros.Val, includePath.Val, isysroot.Val));
3706
/// ParseDITemplateTypeParameter:
3707
/// ::= !DITemplateTypeParameter(name: "Ty", type: !1)
3708
bool LLParser::ParseDITemplateTypeParameter(MDNode *&Result, bool IsDistinct) {
3709
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3710
OPTIONAL(name, MDStringField, ); \
3711
REQUIRED(type, MDField, );
3713
#undef VISIT_MD_FIELDS
3716
GET_OR_DISTINCT(DITemplateTypeParameter, (Context, name.Val, type.Val));
3720
/// ParseDITemplateValueParameter:
3721
/// ::= !DITemplateValueParameter(tag: DW_TAG_template_value_parameter,
3722
/// name: "V", type: !1, value: i32 7)
3723
bool LLParser::ParseDITemplateValueParameter(MDNode *&Result, bool IsDistinct) {
3724
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3725
OPTIONAL(tag, DwarfTagField, (dwarf::DW_TAG_template_value_parameter)); \
3726
OPTIONAL(name, MDStringField, ); \
3727
OPTIONAL(type, MDField, ); \
3728
REQUIRED(value, MDField, );
3730
#undef VISIT_MD_FIELDS
3732
Result = GET_OR_DISTINCT(DITemplateValueParameter,
3733
(Context, tag.Val, name.Val, type.Val, value.Val));
3737
/// ParseDIGlobalVariable:
3738
/// ::= !DIGlobalVariable(scope: !0, name: "foo", linkageName: "foo",
3739
/// file: !1, line: 7, type: !2, isLocal: false,
3740
/// isDefinition: true, variable: i32* @foo,
3741
/// declaration: !3)
3742
bool LLParser::ParseDIGlobalVariable(MDNode *&Result, bool IsDistinct) {
3743
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3744
REQUIRED(name, MDStringField, (/* AllowEmpty */ false)); \
3745
OPTIONAL(scope, MDField, ); \
3746
OPTIONAL(linkageName, MDStringField, ); \
3747
OPTIONAL(file, MDField, ); \
3748
OPTIONAL(line, LineField, ); \
3749
OPTIONAL(type, MDField, ); \
3750
OPTIONAL(isLocal, MDBoolField, ); \
3751
OPTIONAL(isDefinition, MDBoolField, (true)); \
3752
OPTIONAL(variable, MDConstant, ); \
3753
OPTIONAL(declaration, MDField, );
3755
#undef VISIT_MD_FIELDS
3757
Result = GET_OR_DISTINCT(DIGlobalVariable,
3758
(Context, scope.Val, name.Val, linkageName.Val,
3759
file.Val, line.Val, type.Val, isLocal.Val,
3760
isDefinition.Val, variable.Val, declaration.Val));
3764
/// ParseDILocalVariable:
3765
/// ::= !DILocalVariable(tag: DW_TAG_arg_variable, scope: !0, name: "foo",
3766
/// file: !1, line: 7, type: !2, arg: 2, flags: 7)
3767
bool LLParser::ParseDILocalVariable(MDNode *&Result, bool IsDistinct) {
3768
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3769
REQUIRED(tag, DwarfTagField, ); \
3770
REQUIRED(scope, MDField, (/* AllowNull */ false)); \
3771
OPTIONAL(name, MDStringField, ); \
3772
OPTIONAL(file, MDField, ); \
3773
OPTIONAL(line, LineField, ); \
3774
OPTIONAL(type, MDField, ); \
3775
OPTIONAL(arg, MDUnsignedField, (0, UINT16_MAX)); \
3776
OPTIONAL(flags, DIFlagField, );
3778
#undef VISIT_MD_FIELDS
3780
Result = GET_OR_DISTINCT(DILocalVariable,
3781
(Context, tag.Val, scope.Val, name.Val, file.Val,
3782
line.Val, type.Val, arg.Val, flags.Val));
3786
/// ParseDIExpression:
3787
/// ::= !DIExpression(0, 7, -1)
3788
bool LLParser::ParseDIExpression(MDNode *&Result, bool IsDistinct) {
3789
assert(Lex.getKind() == lltok::MetadataVar && "Expected metadata type name");
3792
if (ParseToken(lltok::lparen, "expected '(' here"))
3795
SmallVector<uint64_t, 8> Elements;
3796
if (Lex.getKind() != lltok::rparen)
3798
if (Lex.getKind() == lltok::DwarfOp) {
3799
if (unsigned Op = dwarf::getOperationEncoding(Lex.getStrVal())) {
3801
Elements.push_back(Op);
3804
return TokError(Twine("invalid DWARF op '") + Lex.getStrVal() + "'");
3807
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
3808
return TokError("expected unsigned integer");
3810
auto &U = Lex.getAPSIntVal();
3811
if (U.ugt(UINT64_MAX))
3812
return TokError("element too large, limit is " + Twine(UINT64_MAX));
3813
Elements.push_back(U.getZExtValue());
3815
} while (EatIfPresent(lltok::comma));
3817
if (ParseToken(lltok::rparen, "expected ')' here"))
3820
Result = GET_OR_DISTINCT(DIExpression, (Context, Elements));
3824
/// ParseDIObjCProperty:
3825
/// ::= !DIObjCProperty(name: "foo", file: !1, line: 7, setter: "setFoo",
3826
/// getter: "getFoo", attributes: 7, type: !2)
3827
bool LLParser::ParseDIObjCProperty(MDNode *&Result, bool IsDistinct) {
3828
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3829
OPTIONAL(name, MDStringField, ); \
3830
OPTIONAL(file, MDField, ); \
3831
OPTIONAL(line, LineField, ); \
3832
OPTIONAL(setter, MDStringField, ); \
3833
OPTIONAL(getter, MDStringField, ); \
3834
OPTIONAL(attributes, MDUnsignedField, (0, UINT32_MAX)); \
3835
OPTIONAL(type, MDField, );
3837
#undef VISIT_MD_FIELDS
3839
Result = GET_OR_DISTINCT(DIObjCProperty,
3840
(Context, name.Val, file.Val, line.Val, setter.Val,
3841
getter.Val, attributes.Val, type.Val));
3845
/// ParseDIImportedEntity:
3846
/// ::= !DIImportedEntity(tag: DW_TAG_imported_module, scope: !0, entity: !1,
3847
/// line: 7, name: "foo")
3848
bool LLParser::ParseDIImportedEntity(MDNode *&Result, bool IsDistinct) {
3849
#define VISIT_MD_FIELDS(OPTIONAL, REQUIRED) \
3850
REQUIRED(tag, DwarfTagField, ); \
3851
REQUIRED(scope, MDField, ); \
3852
OPTIONAL(entity, MDField, ); \
3853
OPTIONAL(line, LineField, ); \
3854
OPTIONAL(name, MDStringField, );
3856
#undef VISIT_MD_FIELDS
3858
Result = GET_OR_DISTINCT(DIImportedEntity, (Context, tag.Val, scope.Val,
3859
entity.Val, line.Val, name.Val));
3863
#undef PARSE_MD_FIELD
3865
#undef REQUIRE_FIELD
3866
#undef DECLARE_FIELD
3868
/// ParseMetadataAsValue
3869
/// ::= metadata i32 %local
3870
/// ::= metadata i32 @global
3871
/// ::= metadata i32 7
3873
/// ::= metadata !{...}
3874
/// ::= metadata !"string"
3875
bool LLParser::ParseMetadataAsValue(Value *&V, PerFunctionState &PFS) {
3876
// Note: the type 'metadata' has already been parsed.
3878
if (ParseMetadata(MD, &PFS))
3881
V = MetadataAsValue::get(Context, MD);
3885
/// ParseValueAsMetadata
3889
bool LLParser::ParseValueAsMetadata(Metadata *&MD, const Twine &TypeMsg,
3890
PerFunctionState *PFS) {
3893
if (ParseType(Ty, TypeMsg, Loc))
3895
if (Ty->isMetadataTy())
3896
return Error(Loc, "invalid metadata-value-metadata roundtrip");
3899
if (ParseValue(Ty, V, PFS))
3902
MD = ValueAsMetadata::get(V);
3913
/// ::= !DILocation(...)
3914
bool LLParser::ParseMetadata(Metadata *&MD, PerFunctionState *PFS) {
3915
if (Lex.getKind() == lltok::MetadataVar) {
3917
if (ParseSpecializedMDNode(N))
3925
if (Lex.getKind() != lltok::exclaim)
3926
return ParseValueAsMetadata(MD, "expected metadata operand", PFS);
3929
assert(Lex.getKind() == lltok::exclaim && "Expected '!' here");
3933
// ::= '!' STRINGCONSTANT
3934
if (Lex.getKind() == lltok::StringConstant) {
3936
if (ParseMDString(S))
3946
if (ParseMDNodeTail(N))
3953
//===----------------------------------------------------------------------===//
3954
// Function Parsing.
3955
//===----------------------------------------------------------------------===//
3957
bool LLParser::ConvertValIDToValue(Type *Ty, ValID &ID, Value *&V,
3958
PerFunctionState *PFS) {
3959
if (Ty->isFunctionTy())
3960
return Error(ID.Loc, "functions are not values, refer to them as pointers");
3963
case ValID::t_LocalID:
3964
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3965
V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
3966
return V == nullptr;
3967
case ValID::t_LocalName:
3968
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
3969
V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
3970
return V == nullptr;
3971
case ValID::t_InlineAsm: {
3972
PointerType *PTy = dyn_cast<PointerType>(Ty);
3974
PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : nullptr;
3975
if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
3976
return Error(ID.Loc, "invalid type for inline asm constraint string");
3977
V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal&1,
3978
(ID.UIntVal>>1)&1, (InlineAsm::AsmDialect(ID.UIntVal>>2)));
3981
case ValID::t_GlobalName:
3982
V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
3983
return V == nullptr;
3984
case ValID::t_GlobalID:
3985
V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
3986
return V == nullptr;
3987
case ValID::t_APSInt:
3988
if (!Ty->isIntegerTy())
3989
return Error(ID.Loc, "integer constant must have integer type");
3990
ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
3991
V = ConstantInt::get(Context, ID.APSIntVal);
3993
case ValID::t_APFloat:
3994
if (!Ty->isFloatingPointTy() ||
3995
!ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
3996
return Error(ID.Loc, "floating point constant invalid for type");
3998
// The lexer has no type info, so builds all half, float, and double FP
3999
// constants as double. Fix this here. Long double does not need this.
4000
if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble) {
4003
ID.APFloatVal.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven,
4005
else if (Ty->isFloatTy())
4006
ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
4009
V = ConstantFP::get(Context, ID.APFloatVal);
4011
if (V->getType() != Ty)
4012
return Error(ID.Loc, "floating point constant does not have type '" +
4013
getTypeString(Ty) + "'");
4017
if (!Ty->isPointerTy())
4018
return Error(ID.Loc, "null must be a pointer type");
4019
V = ConstantPointerNull::get(cast<PointerType>(Ty));
4021
case ValID::t_Undef:
4022
// FIXME: LabelTy should not be a first-class type.
4023
if (!Ty->isFirstClassType() || Ty->isLabelTy())
4024
return Error(ID.Loc, "invalid type for undef constant");
4025
V = UndefValue::get(Ty);
4027
case ValID::t_EmptyArray:
4028
if (!Ty->isArrayTy() || cast<ArrayType>(Ty)->getNumElements() != 0)
4029
return Error(ID.Loc, "invalid empty array initializer");
4030
V = UndefValue::get(Ty);
4033
// FIXME: LabelTy should not be a first-class type.
4034
if (!Ty->isFirstClassType() || Ty->isLabelTy())
4035
return Error(ID.Loc, "invalid type for null constant");
4036
V = Constant::getNullValue(Ty);
4038
case ValID::t_Constant:
4039
if (ID.ConstantVal->getType() != Ty)
4040
return Error(ID.Loc, "constant expression type mismatch");
4044
case ValID::t_ConstantStruct:
4045
case ValID::t_PackedConstantStruct:
4046
if (StructType *ST = dyn_cast<StructType>(Ty)) {
4047
if (ST->getNumElements() != ID.UIntVal)
4048
return Error(ID.Loc,
4049
"initializer with struct type has wrong # elements");
4050
if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
4051
return Error(ID.Loc, "packed'ness of initializer and type don't match");
4053
// Verify that the elements are compatible with the structtype.
4054
for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
4055
if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
4056
return Error(ID.Loc, "element " + Twine(i) +
4057
" of struct initializer doesn't match struct element type");
4059
V = ConstantStruct::get(ST, makeArrayRef(ID.ConstantStructElts,
4062
return Error(ID.Loc, "constant expression type mismatch");
4065
llvm_unreachable("Invalid ValID");
4068
bool LLParser::ParseValue(Type *Ty, Value *&V, PerFunctionState *PFS) {
4071
return ParseValID(ID, PFS) ||
4072
ConvertValIDToValue(Ty, ID, V, PFS);
4075
bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
4077
return ParseType(Ty) ||
4078
ParseValue(Ty, V, PFS);
4081
bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
4082
PerFunctionState &PFS) {
4085
if (ParseTypeAndValue(V, PFS)) return true;
4086
if (!isa<BasicBlock>(V))
4087
return Error(Loc, "expected a basic block");
4088
BB = cast<BasicBlock>(V);
4094
/// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
4095
/// OptUnnamedAddr Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
4096
/// OptionalAlign OptGC OptionalPrefix OptionalPrologue OptPersonalityFn
4097
bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
4098
// Parse the linkage.
4099
LocTy LinkageLoc = Lex.getLoc();
4102
unsigned Visibility;
4103
unsigned DLLStorageClass;
4104
AttrBuilder RetAttrs;
4106
Type *RetType = nullptr;
4107
LocTy RetTypeLoc = Lex.getLoc();
4108
if (ParseOptionalLinkage(Linkage) ||
4109
ParseOptionalVisibility(Visibility) ||
4110
ParseOptionalDLLStorageClass(DLLStorageClass) ||
4111
ParseOptionalCallingConv(CC) ||
4112
ParseOptionalReturnAttrs(RetAttrs) ||
4113
ParseType(RetType, RetTypeLoc, true /*void allowed*/))
4116
// Verify that the linkage is ok.
4117
switch ((GlobalValue::LinkageTypes)Linkage) {
4118
case GlobalValue::ExternalLinkage:
4119
break; // always ok.
4120
case GlobalValue::ExternalWeakLinkage:
4122
return Error(LinkageLoc, "invalid linkage for function definition");
4124
case GlobalValue::PrivateLinkage:
4125
case GlobalValue::InternalLinkage:
4126
case GlobalValue::AvailableExternallyLinkage:
4127
case GlobalValue::LinkOnceAnyLinkage:
4128
case GlobalValue::LinkOnceODRLinkage:
4129
case GlobalValue::WeakAnyLinkage:
4130
case GlobalValue::WeakODRLinkage:
4132
return Error(LinkageLoc, "invalid linkage for function declaration");
4134
case GlobalValue::AppendingLinkage:
4135
case GlobalValue::CommonLinkage:
4136
return Error(LinkageLoc, "invalid function linkage type");
4139
if (!isValidVisibilityForLinkage(Visibility, Linkage))
4140
return Error(LinkageLoc,
4141
"symbol with local linkage must have default visibility");
4143
if (!FunctionType::isValidReturnType(RetType))
4144
return Error(RetTypeLoc, "invalid function return type");
4146
LocTy NameLoc = Lex.getLoc();
4148
std::string FunctionName;
4149
if (Lex.getKind() == lltok::GlobalVar) {
4150
FunctionName = Lex.getStrVal();
4151
} else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
4152
unsigned NameID = Lex.getUIntVal();
4154
if (NameID != NumberedVals.size())
4155
return TokError("function expected to be numbered '%" +
4156
Twine(NumberedVals.size()) + "'");
4158
return TokError("expected function name");
4163
if (Lex.getKind() != lltok::lparen)
4164
return TokError("expected '(' in function argument list");
4166
SmallVector<ArgInfo, 8> ArgList;
4168
AttrBuilder FuncAttrs;
4169
std::vector<unsigned> FwdRefAttrGrps;
4171
std::string Section;
4175
LocTy UnnamedAddrLoc;
4176
Constant *Prefix = nullptr;
4177
Constant *Prologue = nullptr;
4178
Constant *PersonalityFn = nullptr;
4181
if (ParseArgumentList(ArgList, isVarArg) ||
4182
ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
4184
ParseFnAttributeValuePairs(FuncAttrs, FwdRefAttrGrps, false,
4186
(EatIfPresent(lltok::kw_section) &&
4187
ParseStringConstant(Section)) ||
4188
parseOptionalComdat(FunctionName, C) ||
4189
ParseOptionalAlignment(Alignment) ||
4190
(EatIfPresent(lltok::kw_gc) &&
4191
ParseStringConstant(GC)) ||
4192
(EatIfPresent(lltok::kw_prefix) &&
4193
ParseGlobalTypeAndValue(Prefix)) ||
4194
(EatIfPresent(lltok::kw_prologue) &&
4195
ParseGlobalTypeAndValue(Prologue)) ||
4196
(EatIfPresent(lltok::kw_personality) &&
4197
ParseGlobalTypeAndValue(PersonalityFn)))
4200
if (FuncAttrs.contains(Attribute::Builtin))
4201
return Error(BuiltinLoc, "'builtin' attribute not valid on function");
4203
// If the alignment was parsed as an attribute, move to the alignment field.
4204
if (FuncAttrs.hasAlignmentAttr()) {
4205
Alignment = FuncAttrs.getAlignment();
4206
FuncAttrs.removeAttribute(Attribute::Alignment);
4209
// Okay, if we got here, the function is syntactically valid. Convert types
4210
// and do semantic checks.
4211
std::vector<Type*> ParamTypeList;
4212
SmallVector<AttributeSet, 8> Attrs;
4214
if (RetAttrs.hasAttributes())
4215
Attrs.push_back(AttributeSet::get(RetType->getContext(),
4216
AttributeSet::ReturnIndex,
4219
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4220
ParamTypeList.push_back(ArgList[i].Ty);
4221
if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4222
AttrBuilder B(ArgList[i].Attrs, i + 1);
4223
Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4227
if (FuncAttrs.hasAttributes())
4228
Attrs.push_back(AttributeSet::get(RetType->getContext(),
4229
AttributeSet::FunctionIndex,
4232
AttributeSet PAL = AttributeSet::get(Context, Attrs);
4234
if (PAL.hasAttribute(1, Attribute::StructRet) && !RetType->isVoidTy())
4235
return Error(RetTypeLoc, "functions with 'sret' argument must return void");
4238
FunctionType::get(RetType, ParamTypeList, isVarArg);
4239
PointerType *PFT = PointerType::getUnqual(FT);
4242
if (!FunctionName.empty()) {
4243
// If this was a definition of a forward reference, remove the definition
4244
// from the forward reference table and fill in the forward ref.
4245
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
4246
ForwardRefVals.find(FunctionName);
4247
if (FRVI != ForwardRefVals.end()) {
4248
Fn = M->getFunction(FunctionName);
4250
return Error(FRVI->second.second, "invalid forward reference to "
4251
"function as global value!");
4252
if (Fn->getType() != PFT)
4253
return Error(FRVI->second.second, "invalid forward reference to "
4254
"function '" + FunctionName + "' with wrong type!");
4256
ForwardRefVals.erase(FRVI);
4257
} else if ((Fn = M->getFunction(FunctionName))) {
4258
// Reject redefinitions.
4259
return Error(NameLoc, "invalid redefinition of function '" +
4260
FunctionName + "'");
4261
} else if (M->getNamedValue(FunctionName)) {
4262
return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
4266
// If this is a definition of a forward referenced function, make sure the
4268
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
4269
= ForwardRefValIDs.find(NumberedVals.size());
4270
if (I != ForwardRefValIDs.end()) {
4271
Fn = cast<Function>(I->second.first);
4272
if (Fn->getType() != PFT)
4273
return Error(NameLoc, "type of definition and forward reference of '@" +
4274
Twine(NumberedVals.size()) + "' disagree");
4275
ForwardRefValIDs.erase(I);
4280
Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
4281
else // Move the forward-reference to the correct spot in the module.
4282
M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
4284
if (FunctionName.empty())
4285
NumberedVals.push_back(Fn);
4287
Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
4288
Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
4289
Fn->setDLLStorageClass((GlobalValue::DLLStorageClassTypes)DLLStorageClass);
4290
Fn->setCallingConv(CC);
4291
Fn->setAttributes(PAL);
4292
Fn->setUnnamedAddr(UnnamedAddr);
4293
Fn->setAlignment(Alignment);
4294
Fn->setSection(Section);
4296
Fn->setPersonalityFn(PersonalityFn);
4297
if (!GC.empty()) Fn->setGC(GC.c_str());
4298
Fn->setPrefixData(Prefix);
4299
Fn->setPrologueData(Prologue);
4300
ForwardRefAttrGroups[Fn] = FwdRefAttrGrps;
4302
// Add all of the arguments we parsed to the function.
4303
Function::arg_iterator ArgIt = Fn->arg_begin();
4304
for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
4305
// If the argument has a name, insert it into the argument symbol table.
4306
if (ArgList[i].Name.empty()) continue;
4308
// Set the name, if it conflicted, it will be auto-renamed.
4309
ArgIt->setName(ArgList[i].Name);
4311
if (ArgIt->getName() != ArgList[i].Name)
4312
return Error(ArgList[i].Loc, "redefinition of argument '%" +
4313
ArgList[i].Name + "'");
4319
// Check the declaration has no block address forward references.
4321
if (FunctionName.empty()) {
4322
ID.Kind = ValID::t_GlobalID;
4323
ID.UIntVal = NumberedVals.size() - 1;
4325
ID.Kind = ValID::t_GlobalName;
4326
ID.StrVal = FunctionName;
4328
auto Blocks = ForwardRefBlockAddresses.find(ID);
4329
if (Blocks != ForwardRefBlockAddresses.end())
4330
return Error(Blocks->first.Loc,
4331
"cannot take blockaddress inside a declaration");
4335
bool LLParser::PerFunctionState::resolveForwardRefBlockAddresses() {
4337
if (FunctionNumber == -1) {
4338
ID.Kind = ValID::t_GlobalName;
4339
ID.StrVal = F.getName();
4341
ID.Kind = ValID::t_GlobalID;
4342
ID.UIntVal = FunctionNumber;
4345
auto Blocks = P.ForwardRefBlockAddresses.find(ID);
4346
if (Blocks == P.ForwardRefBlockAddresses.end())
4349
for (const auto &I : Blocks->second) {
4350
const ValID &BBID = I.first;
4351
GlobalValue *GV = I.second;
4353
assert((BBID.Kind == ValID::t_LocalID || BBID.Kind == ValID::t_LocalName) &&
4354
"Expected local id or name");
4356
if (BBID.Kind == ValID::t_LocalName)
4357
BB = GetBB(BBID.StrVal, BBID.Loc);
4359
BB = GetBB(BBID.UIntVal, BBID.Loc);
4361
return P.Error(BBID.Loc, "referenced value is not a basic block");
4363
GV->replaceAllUsesWith(BlockAddress::get(&F, BB));
4364
GV->eraseFromParent();
4367
P.ForwardRefBlockAddresses.erase(Blocks);
4371
/// ParseFunctionBody
4372
/// ::= '{' BasicBlock+ UseListOrderDirective* '}'
4373
bool LLParser::ParseFunctionBody(Function &Fn) {
4374
if (Lex.getKind() != lltok::lbrace)
4375
return TokError("expected '{' in function body");
4376
Lex.Lex(); // eat the {.
4378
int FunctionNumber = -1;
4379
if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
4381
PerFunctionState PFS(*this, Fn, FunctionNumber);
4383
// Resolve block addresses and allow basic blocks to be forward-declared
4384
// within this function.
4385
if (PFS.resolveForwardRefBlockAddresses())
4387
SaveAndRestore<PerFunctionState *> ScopeExit(BlockAddressPFS, &PFS);
4389
// We need at least one basic block.
4390
if (Lex.getKind() == lltok::rbrace || Lex.getKind() == lltok::kw_uselistorder)
4391
return TokError("function body requires at least one basic block");
4393
while (Lex.getKind() != lltok::rbrace &&
4394
Lex.getKind() != lltok::kw_uselistorder)
4395
if (ParseBasicBlock(PFS)) return true;
4397
while (Lex.getKind() != lltok::rbrace)
4398
if (ParseUseListOrder(&PFS))
4404
// Verify function is ok.
4405
return PFS.FinishFunction();
4409
/// ::= LabelStr? Instruction*
4410
bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
4411
// If this basic block starts out with a name, remember it.
4413
LocTy NameLoc = Lex.getLoc();
4414
if (Lex.getKind() == lltok::LabelStr) {
4415
Name = Lex.getStrVal();
4419
BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
4421
return Error(NameLoc,
4422
"unable to create block named '" + Name + "'");
4424
std::string NameStr;
4426
// Parse the instructions in this block until we get a terminator.
4429
// This instruction may have three possibilities for a name: a) none
4430
// specified, b) name specified "%foo =", c) number specified: "%4 =".
4431
LocTy NameLoc = Lex.getLoc();
4435
if (Lex.getKind() == lltok::LocalVarID) {
4436
NameID = Lex.getUIntVal();
4438
if (ParseToken(lltok::equal, "expected '=' after instruction id"))
4440
} else if (Lex.getKind() == lltok::LocalVar) {
4441
NameStr = Lex.getStrVal();
4443
if (ParseToken(lltok::equal, "expected '=' after instruction name"))
4447
switch (ParseInstruction(Inst, BB, PFS)) {
4448
default: llvm_unreachable("Unknown ParseInstruction result!");
4449
case InstError: return true;
4451
BB->getInstList().push_back(Inst);
4453
// With a normal result, we check to see if the instruction is followed by
4454
// a comma and metadata.
4455
if (EatIfPresent(lltok::comma))
4456
if (ParseInstructionMetadata(*Inst))
4459
case InstExtraComma:
4460
BB->getInstList().push_back(Inst);
4462
// If the instruction parser ate an extra comma at the end of it, it
4463
// *must* be followed by metadata.
4464
if (ParseInstructionMetadata(*Inst))
4469
// Set the name on the instruction.
4470
if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
4471
} while (!isa<TerminatorInst>(Inst));
4476
//===----------------------------------------------------------------------===//
4477
// Instruction Parsing.
4478
//===----------------------------------------------------------------------===//
4480
/// ParseInstruction - Parse one of the many different instructions.
4482
int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
4483
PerFunctionState &PFS) {
4484
lltok::Kind Token = Lex.getKind();
4485
if (Token == lltok::Eof)
4486
return TokError("found end of file when expecting more instructions");
4487
LocTy Loc = Lex.getLoc();
4488
unsigned KeywordVal = Lex.getUIntVal();
4489
Lex.Lex(); // Eat the keyword.
4492
default: return Error(Loc, "expected instruction opcode");
4493
// Terminator Instructions.
4494
case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
4495
case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
4496
case lltok::kw_br: return ParseBr(Inst, PFS);
4497
case lltok::kw_switch: return ParseSwitch(Inst, PFS);
4498
case lltok::kw_indirectbr: return ParseIndirectBr(Inst, PFS);
4499
case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
4500
case lltok::kw_resume: return ParseResume(Inst, PFS);
4501
// Binary Operators.
4505
case lltok::kw_shl: {
4506
bool NUW = EatIfPresent(lltok::kw_nuw);
4507
bool NSW = EatIfPresent(lltok::kw_nsw);
4508
if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
4510
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4512
if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
4513
if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
4516
case lltok::kw_fadd:
4517
case lltok::kw_fsub:
4518
case lltok::kw_fmul:
4519
case lltok::kw_fdiv:
4520
case lltok::kw_frem: {
4521
FastMathFlags FMF = EatFastMathFlagsIfPresent();
4522
int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2);
4526
Inst->setFastMathFlags(FMF);
4530
case lltok::kw_sdiv:
4531
case lltok::kw_udiv:
4532
case lltok::kw_lshr:
4533
case lltok::kw_ashr: {
4534
bool Exact = EatIfPresent(lltok::kw_exact);
4536
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
4537
if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
4541
case lltok::kw_urem:
4542
case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
4545
case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
4546
case lltok::kw_icmp: return ParseCompare(Inst, PFS, KeywordVal);
4547
case lltok::kw_fcmp: {
4548
FastMathFlags FMF = EatFastMathFlagsIfPresent();
4549
int Res = ParseCompare(Inst, PFS, KeywordVal);
4553
Inst->setFastMathFlags(FMF);
4558
case lltok::kw_trunc:
4559
case lltok::kw_zext:
4560
case lltok::kw_sext:
4561
case lltok::kw_fptrunc:
4562
case lltok::kw_fpext:
4563
case lltok::kw_bitcast:
4564
case lltok::kw_addrspacecast:
4565
case lltok::kw_uitofp:
4566
case lltok::kw_sitofp:
4567
case lltok::kw_fptoui:
4568
case lltok::kw_fptosi:
4569
case lltok::kw_inttoptr:
4570
case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
4572
case lltok::kw_select: return ParseSelect(Inst, PFS);
4573
case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
4574
case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
4575
case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
4576
case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
4577
case lltok::kw_phi: return ParsePHI(Inst, PFS);
4578
case lltok::kw_landingpad: return ParseLandingPad(Inst, PFS);
4580
case lltok::kw_call: return ParseCall(Inst, PFS, CallInst::TCK_None);
4581
case lltok::kw_tail: return ParseCall(Inst, PFS, CallInst::TCK_Tail);
4582
case lltok::kw_musttail: return ParseCall(Inst, PFS, CallInst::TCK_MustTail);
4584
case lltok::kw_alloca: return ParseAlloc(Inst, PFS);
4585
case lltok::kw_load: return ParseLoad(Inst, PFS);
4586
case lltok::kw_store: return ParseStore(Inst, PFS);
4587
case lltok::kw_cmpxchg: return ParseCmpXchg(Inst, PFS);
4588
case lltok::kw_atomicrmw: return ParseAtomicRMW(Inst, PFS);
4589
case lltok::kw_fence: return ParseFence(Inst, PFS);
4590
case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
4591
case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
4592
case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
4596
/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
4597
bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
4598
if (Opc == Instruction::FCmp) {
4599
switch (Lex.getKind()) {
4600
default: return TokError("expected fcmp predicate (e.g. 'oeq')");
4601
case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
4602
case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
4603
case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
4604
case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
4605
case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
4606
case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
4607
case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
4608
case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
4609
case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
4610
case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
4611
case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
4612
case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
4613
case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
4614
case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
4615
case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
4616
case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
4619
switch (Lex.getKind()) {
4620
default: return TokError("expected icmp predicate (e.g. 'eq')");
4621
case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
4622
case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
4623
case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
4624
case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
4625
case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
4626
case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
4627
case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
4628
case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
4629
case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
4630
case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
4637
//===----------------------------------------------------------------------===//
4638
// Terminator Instructions.
4639
//===----------------------------------------------------------------------===//
4641
/// ParseRet - Parse a return instruction.
4642
/// ::= 'ret' void (',' !dbg, !1)*
4643
/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
4644
bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
4645
PerFunctionState &PFS) {
4646
SMLoc TypeLoc = Lex.getLoc();
4648
if (ParseType(Ty, true /*void allowed*/)) return true;
4650
Type *ResType = PFS.getFunction().getReturnType();
4652
if (Ty->isVoidTy()) {
4653
if (!ResType->isVoidTy())
4654
return Error(TypeLoc, "value doesn't match function result type '" +
4655
getTypeString(ResType) + "'");
4657
Inst = ReturnInst::Create(Context);
4662
if (ParseValue(Ty, RV, PFS)) return true;
4664
if (ResType != RV->getType())
4665
return Error(TypeLoc, "value doesn't match function result type '" +
4666
getTypeString(ResType) + "'");
4668
Inst = ReturnInst::Create(Context, RV);
4674
/// ::= 'br' TypeAndValue
4675
/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
4676
bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
4679
BasicBlock *Op1, *Op2;
4680
if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
4682
if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
4683
Inst = BranchInst::Create(BB);
4687
if (Op0->getType() != Type::getInt1Ty(Context))
4688
return Error(Loc, "branch condition must have 'i1' type");
4690
if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
4691
ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
4692
ParseToken(lltok::comma, "expected ',' after true destination") ||
4693
ParseTypeAndBasicBlock(Op2, Loc2, PFS))
4696
Inst = BranchInst::Create(Op1, Op2, Op0);
4702
/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
4704
/// ::= (TypeAndValue ',' TypeAndValue)*
4705
bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
4706
LocTy CondLoc, BBLoc;
4708
BasicBlock *DefaultBB;
4709
if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
4710
ParseToken(lltok::comma, "expected ',' after switch condition") ||
4711
ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
4712
ParseToken(lltok::lsquare, "expected '[' with switch table"))
4715
if (!Cond->getType()->isIntegerTy())
4716
return Error(CondLoc, "switch condition must have integer type");
4718
// Parse the jump table pairs.
4719
SmallPtrSet<Value*, 32> SeenCases;
4720
SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
4721
while (Lex.getKind() != lltok::rsquare) {
4725
if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
4726
ParseToken(lltok::comma, "expected ',' after case value") ||
4727
ParseTypeAndBasicBlock(DestBB, PFS))
4730
if (!SeenCases.insert(Constant).second)
4731
return Error(CondLoc, "duplicate case value in switch");
4732
if (!isa<ConstantInt>(Constant))
4733
return Error(CondLoc, "case value is not a constant integer");
4735
Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
4738
Lex.Lex(); // Eat the ']'.
4740
SwitchInst *SI = SwitchInst::Create(Cond, DefaultBB, Table.size());
4741
for (unsigned i = 0, e = Table.size(); i != e; ++i)
4742
SI->addCase(Table[i].first, Table[i].second);
4749
/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
4750
bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
4753
if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
4754
ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
4755
ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
4758
if (!Address->getType()->isPointerTy())
4759
return Error(AddrLoc, "indirectbr address must have pointer type");
4761
// Parse the destination list.
4762
SmallVector<BasicBlock*, 16> DestList;
4764
if (Lex.getKind() != lltok::rsquare) {
4766
if (ParseTypeAndBasicBlock(DestBB, PFS))
4768
DestList.push_back(DestBB);
4770
while (EatIfPresent(lltok::comma)) {
4771
if (ParseTypeAndBasicBlock(DestBB, PFS))
4773
DestList.push_back(DestBB);
4777
if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
4780
IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
4781
for (unsigned i = 0, e = DestList.size(); i != e; ++i)
4782
IBI->addDestination(DestList[i]);
4789
/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
4790
/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
4791
bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
4792
LocTy CallLoc = Lex.getLoc();
4793
AttrBuilder RetAttrs, FnAttrs;
4794
std::vector<unsigned> FwdRefAttrGrps;
4797
Type *RetType = nullptr;
4800
SmallVector<ParamInfo, 16> ArgList;
4802
BasicBlock *NormalBB, *UnwindBB;
4803
if (ParseOptionalCallingConv(CC) ||
4804
ParseOptionalReturnAttrs(RetAttrs) ||
4805
ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
4806
ParseValID(CalleeID) ||
4807
ParseParameterList(ArgList, PFS) ||
4808
ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
4810
ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
4811
ParseTypeAndBasicBlock(NormalBB, PFS) ||
4812
ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
4813
ParseTypeAndBasicBlock(UnwindBB, PFS))
4816
// If RetType is a non-function pointer type, then this is the short syntax
4817
// for the call, which means that RetType is just the return type. Infer the
4818
// rest of the function argument types from the arguments that are present.
4819
FunctionType *Ty = dyn_cast<FunctionType>(RetType);
4821
// Pull out the types of all of the arguments...
4822
std::vector<Type*> ParamTypes;
4823
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
4824
ParamTypes.push_back(ArgList[i].V->getType());
4826
if (!FunctionType::isValidReturnType(RetType))
4827
return Error(RetTypeLoc, "Invalid result type for LLVM function");
4829
Ty = FunctionType::get(RetType, ParamTypes, false);
4832
// Look up the callee.
4834
if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
4837
// Set up the Attribute for the function.
4838
SmallVector<AttributeSet, 8> Attrs;
4839
if (RetAttrs.hasAttributes())
4840
Attrs.push_back(AttributeSet::get(RetType->getContext(),
4841
AttributeSet::ReturnIndex,
4844
SmallVector<Value*, 8> Args;
4846
// Loop through FunctionType's arguments and ensure they are specified
4847
// correctly. Also, gather any parameter attributes.
4848
FunctionType::param_iterator I = Ty->param_begin();
4849
FunctionType::param_iterator E = Ty->param_end();
4850
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
4851
Type *ExpectedTy = nullptr;
4854
} else if (!Ty->isVarArg()) {
4855
return Error(ArgList[i].Loc, "too many arguments specified");
4858
if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
4859
return Error(ArgList[i].Loc, "argument is not of expected type '" +
4860
getTypeString(ExpectedTy) + "'");
4861
Args.push_back(ArgList[i].V);
4862
if (ArgList[i].Attrs.hasAttributes(i + 1)) {
4863
AttrBuilder B(ArgList[i].Attrs, i + 1);
4864
Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
4869
return Error(CallLoc, "not enough parameters specified for call");
4871
if (FnAttrs.hasAttributes()) {
4872
if (FnAttrs.hasAlignmentAttr())
4873
return Error(CallLoc, "invoke instructions may not have an alignment");
4875
Attrs.push_back(AttributeSet::get(RetType->getContext(),
4876
AttributeSet::FunctionIndex,
4880
// Finish off the Attribute and check them
4881
AttributeSet PAL = AttributeSet::get(Context, Attrs);
4883
InvokeInst *II = InvokeInst::Create(Ty, Callee, NormalBB, UnwindBB, Args);
4884
II->setCallingConv(CC);
4885
II->setAttributes(PAL);
4886
ForwardRefAttrGroups[II] = FwdRefAttrGrps;
4892
/// ::= 'resume' TypeAndValue
4893
bool LLParser::ParseResume(Instruction *&Inst, PerFunctionState &PFS) {
4894
Value *Exn; LocTy ExnLoc;
4895
if (ParseTypeAndValue(Exn, ExnLoc, PFS))
4898
ResumeInst *RI = ResumeInst::Create(Exn);
4903
//===----------------------------------------------------------------------===//
4904
// Binary Operators.
4905
//===----------------------------------------------------------------------===//
4908
/// ::= ArithmeticOps TypeAndValue ',' Value
4910
/// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
4911
/// then any integer operand is allowed, if it is 2, any fp operand is allowed.
4912
bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
4913
unsigned Opc, unsigned OperandType) {
4914
LocTy Loc; Value *LHS, *RHS;
4915
if (ParseTypeAndValue(LHS, Loc, PFS) ||
4916
ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
4917
ParseValue(LHS->getType(), RHS, PFS))
4921
switch (OperandType) {
4922
default: llvm_unreachable("Unknown operand type!");
4923
case 0: // int or FP.
4924
Valid = LHS->getType()->isIntOrIntVectorTy() ||
4925
LHS->getType()->isFPOrFPVectorTy();
4927
case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
4928
case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); break;
4932
return Error(Loc, "invalid operand type for instruction");
4934
Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4939
/// ::= ArithmeticOps TypeAndValue ',' Value {
4940
bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
4942
LocTy Loc; Value *LHS, *RHS;
4943
if (ParseTypeAndValue(LHS, Loc, PFS) ||
4944
ParseToken(lltok::comma, "expected ',' in logical operation") ||
4945
ParseValue(LHS->getType(), RHS, PFS))
4948
if (!LHS->getType()->isIntOrIntVectorTy())
4949
return Error(Loc,"instruction requires integer or integer vector operands");
4951
Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
4957
/// ::= 'icmp' IPredicates TypeAndValue ',' Value
4958
/// ::= 'fcmp' FPredicates TypeAndValue ',' Value
4959
bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
4961
// Parse the integer/fp comparison predicate.
4965
if (ParseCmpPredicate(Pred, Opc) ||
4966
ParseTypeAndValue(LHS, Loc, PFS) ||
4967
ParseToken(lltok::comma, "expected ',' after compare value") ||
4968
ParseValue(LHS->getType(), RHS, PFS))
4971
if (Opc == Instruction::FCmp) {
4972
if (!LHS->getType()->isFPOrFPVectorTy())
4973
return Error(Loc, "fcmp requires floating point operands");
4974
Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4976
assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
4977
if (!LHS->getType()->isIntOrIntVectorTy() &&
4978
!LHS->getType()->getScalarType()->isPointerTy())
4979
return Error(Loc, "icmp requires integer operands");
4980
Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
4985
//===----------------------------------------------------------------------===//
4986
// Other Instructions.
4987
//===----------------------------------------------------------------------===//
4991
/// ::= CastOpc TypeAndValue 'to' Type
4992
bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
4996
Type *DestTy = nullptr;
4997
if (ParseTypeAndValue(Op, Loc, PFS) ||
4998
ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
5002
if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
5003
CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
5004
return Error(Loc, "invalid cast opcode for cast from '" +
5005
getTypeString(Op->getType()) + "' to '" +
5006
getTypeString(DestTy) + "'");
5008
Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
5013
/// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5014
bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
5016
Value *Op0, *Op1, *Op2;
5017
if (ParseTypeAndValue(Op0, Loc, PFS) ||
5018
ParseToken(lltok::comma, "expected ',' after select condition") ||
5019
ParseTypeAndValue(Op1, PFS) ||
5020
ParseToken(lltok::comma, "expected ',' after select value") ||
5021
ParseTypeAndValue(Op2, PFS))
5024
if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
5025
return Error(Loc, Reason);
5027
Inst = SelectInst::Create(Op0, Op1, Op2);
5032
/// ::= 'va_arg' TypeAndValue ',' Type
5033
bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
5035
Type *EltTy = nullptr;
5037
if (ParseTypeAndValue(Op, PFS) ||
5038
ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
5039
ParseType(EltTy, TypeLoc))
5042
if (!EltTy->isFirstClassType())
5043
return Error(TypeLoc, "va_arg requires operand with first class type");
5045
Inst = new VAArgInst(Op, EltTy);
5049
/// ParseExtractElement
5050
/// ::= 'extractelement' TypeAndValue ',' TypeAndValue
5051
bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
5054
if (ParseTypeAndValue(Op0, Loc, PFS) ||
5055
ParseToken(lltok::comma, "expected ',' after extract value") ||
5056
ParseTypeAndValue(Op1, PFS))
5059
if (!ExtractElementInst::isValidOperands(Op0, Op1))
5060
return Error(Loc, "invalid extractelement operands");
5062
Inst = ExtractElementInst::Create(Op0, Op1);
5066
/// ParseInsertElement
5067
/// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5068
bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
5070
Value *Op0, *Op1, *Op2;
5071
if (ParseTypeAndValue(Op0, Loc, PFS) ||
5072
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5073
ParseTypeAndValue(Op1, PFS) ||
5074
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5075
ParseTypeAndValue(Op2, PFS))
5078
if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
5079
return Error(Loc, "invalid insertelement operands");
5081
Inst = InsertElementInst::Create(Op0, Op1, Op2);
5085
/// ParseShuffleVector
5086
/// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
5087
bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
5089
Value *Op0, *Op1, *Op2;
5090
if (ParseTypeAndValue(Op0, Loc, PFS) ||
5091
ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
5092
ParseTypeAndValue(Op1, PFS) ||
5093
ParseToken(lltok::comma, "expected ',' after shuffle value") ||
5094
ParseTypeAndValue(Op2, PFS))
5097
if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
5098
return Error(Loc, "invalid shufflevector operands");
5100
Inst = new ShuffleVectorInst(Op0, Op1, Op2);
5105
/// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Value ']')*
5106
int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
5107
Type *Ty = nullptr; LocTy TypeLoc;
5110
if (ParseType(Ty, TypeLoc) ||
5111
ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5112
ParseValue(Ty, Op0, PFS) ||
5113
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5114
ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5115
ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5118
bool AteExtraComma = false;
5119
SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
5121
PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
5123
if (!EatIfPresent(lltok::comma))
5126
if (Lex.getKind() == lltok::MetadataVar) {
5127
AteExtraComma = true;
5131
if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
5132
ParseValue(Ty, Op0, PFS) ||
5133
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
5134
ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
5135
ParseToken(lltok::rsquare, "expected ']' in phi value list"))
5139
if (!Ty->isFirstClassType())
5140
return Error(TypeLoc, "phi node must have first class type");
5142
PHINode *PN = PHINode::Create(Ty, PHIVals.size());
5143
for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
5144
PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
5146
return AteExtraComma ? InstExtraComma : InstNormal;
5150
/// ::= 'landingpad' Type 'personality' TypeAndValue 'cleanup'? Clause+
5152
/// ::= 'catch' TypeAndValue
5154
/// ::= 'filter' TypeAndValue ( ',' TypeAndValue )*
5155
bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
5156
Type *Ty = nullptr; LocTy TyLoc;
5158
if (ParseType(Ty, TyLoc))
5161
std::unique_ptr<LandingPadInst> LP(LandingPadInst::Create(Ty, 0));
5162
LP->setCleanup(EatIfPresent(lltok::kw_cleanup));
5164
while (Lex.getKind() == lltok::kw_catch || Lex.getKind() == lltok::kw_filter){
5165
LandingPadInst::ClauseType CT;
5166
if (EatIfPresent(lltok::kw_catch))
5167
CT = LandingPadInst::Catch;
5168
else if (EatIfPresent(lltok::kw_filter))
5169
CT = LandingPadInst::Filter;
5171
return TokError("expected 'catch' or 'filter' clause type");
5175
if (ParseTypeAndValue(V, VLoc, PFS))
5178
// A 'catch' type expects a non-array constant. A filter clause expects an
5180
if (CT == LandingPadInst::Catch) {
5181
if (isa<ArrayType>(V->getType()))
5182
Error(VLoc, "'catch' clause has an invalid type");
5184
if (!isa<ArrayType>(V->getType()))
5185
Error(VLoc, "'filter' clause has an invalid type");
5188
Constant *CV = dyn_cast<Constant>(V);
5190
return Error(VLoc, "clause argument must be a constant");
5194
Inst = LP.release();
5199
/// ::= 'call' OptionalCallingConv OptionalAttrs Type Value
5200
/// ParameterList OptionalAttrs
5201
/// ::= 'tail' 'call' OptionalCallingConv OptionalAttrs Type Value
5202
/// ParameterList OptionalAttrs
5203
/// ::= 'musttail' 'call' OptionalCallingConv OptionalAttrs Type Value
5204
/// ParameterList OptionalAttrs
5205
bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
5206
CallInst::TailCallKind TCK) {
5207
AttrBuilder RetAttrs, FnAttrs;
5208
std::vector<unsigned> FwdRefAttrGrps;
5211
Type *RetType = nullptr;
5214
SmallVector<ParamInfo, 16> ArgList;
5215
LocTy CallLoc = Lex.getLoc();
5217
if ((TCK != CallInst::TCK_None &&
5218
ParseToken(lltok::kw_call, "expected 'tail call'")) ||
5219
ParseOptionalCallingConv(CC) ||
5220
ParseOptionalReturnAttrs(RetAttrs) ||
5221
ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
5222
ParseValID(CalleeID) ||
5223
ParseParameterList(ArgList, PFS, TCK == CallInst::TCK_MustTail,
5224
PFS.getFunction().isVarArg()) ||
5225
ParseFnAttributeValuePairs(FnAttrs, FwdRefAttrGrps, false,
5229
// If RetType is a non-function pointer type, then this is the short syntax
5230
// for the call, which means that RetType is just the return type. Infer the
5231
// rest of the function argument types from the arguments that are present.
5232
FunctionType *Ty = dyn_cast<FunctionType>(RetType);
5234
// Pull out the types of all of the arguments...
5235
std::vector<Type*> ParamTypes;
5236
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
5237
ParamTypes.push_back(ArgList[i].V->getType());
5239
if (!FunctionType::isValidReturnType(RetType))
5240
return Error(RetTypeLoc, "Invalid result type for LLVM function");
5242
Ty = FunctionType::get(RetType, ParamTypes, false);
5245
// Look up the callee.
5247
if (ConvertValIDToValue(PointerType::getUnqual(Ty), CalleeID, Callee, &PFS))
5250
// Set up the Attribute for the function.
5251
SmallVector<AttributeSet, 8> Attrs;
5252
if (RetAttrs.hasAttributes())
5253
Attrs.push_back(AttributeSet::get(RetType->getContext(),
5254
AttributeSet::ReturnIndex,
5257
SmallVector<Value*, 8> Args;
5259
// Loop through FunctionType's arguments and ensure they are specified
5260
// correctly. Also, gather any parameter attributes.
5261
FunctionType::param_iterator I = Ty->param_begin();
5262
FunctionType::param_iterator E = Ty->param_end();
5263
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
5264
Type *ExpectedTy = nullptr;
5267
} else if (!Ty->isVarArg()) {
5268
return Error(ArgList[i].Loc, "too many arguments specified");
5271
if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
5272
return Error(ArgList[i].Loc, "argument is not of expected type '" +
5273
getTypeString(ExpectedTy) + "'");
5274
Args.push_back(ArgList[i].V);
5275
if (ArgList[i].Attrs.hasAttributes(i + 1)) {
5276
AttrBuilder B(ArgList[i].Attrs, i + 1);
5277
Attrs.push_back(AttributeSet::get(RetType->getContext(), i + 1, B));
5282
return Error(CallLoc, "not enough parameters specified for call");
5284
if (FnAttrs.hasAttributes()) {
5285
if (FnAttrs.hasAlignmentAttr())
5286
return Error(CallLoc, "call instructions may not have an alignment");
5288
Attrs.push_back(AttributeSet::get(RetType->getContext(),
5289
AttributeSet::FunctionIndex,
5293
// Finish off the Attribute and check them
5294
AttributeSet PAL = AttributeSet::get(Context, Attrs);
5296
CallInst *CI = CallInst::Create(Ty, Callee, Args);
5297
CI->setTailCallKind(TCK);
5298
CI->setCallingConv(CC);
5299
CI->setAttributes(PAL);
5300
ForwardRefAttrGroups[CI] = FwdRefAttrGrps;
5305
//===----------------------------------------------------------------------===//
5306
// Memory Instructions.
5307
//===----------------------------------------------------------------------===//
5310
/// ::= 'alloca' 'inalloca'? Type (',' TypeAndValue)? (',' 'align' i32)?
5311
int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
5312
Value *Size = nullptr;
5313
LocTy SizeLoc, TyLoc;
5314
unsigned Alignment = 0;
5317
bool IsInAlloca = EatIfPresent(lltok::kw_inalloca);
5319
if (ParseType(Ty, TyLoc)) return true;
5321
if (Ty->isFunctionTy() || !PointerType::isValidElementType(Ty))
5322
return Error(TyLoc, "invalid type for alloca");
5324
bool AteExtraComma = false;
5325
if (EatIfPresent(lltok::comma)) {
5326
if (Lex.getKind() == lltok::kw_align) {
5327
if (ParseOptionalAlignment(Alignment)) return true;
5328
} else if (Lex.getKind() == lltok::MetadataVar) {
5329
AteExtraComma = true;
5331
if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
5332
ParseOptionalCommaAlign(Alignment, AteExtraComma))
5337
if (Size && !Size->getType()->isIntegerTy())
5338
return Error(SizeLoc, "element count must have integer type");
5340
AllocaInst *AI = new AllocaInst(Ty, Size, Alignment);
5341
AI->setUsedWithInAlloca(IsInAlloca);
5343
return AteExtraComma ? InstExtraComma : InstNormal;
5347
/// ::= 'load' 'volatile'? TypeAndValue (',' 'align' i32)?
5348
/// ::= 'load' 'atomic' 'volatile'? TypeAndValue
5349
/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5350
int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS) {
5351
Value *Val; LocTy Loc;
5352
unsigned Alignment = 0;
5353
bool AteExtraComma = false;
5354
bool isAtomic = false;
5355
AtomicOrdering Ordering = NotAtomic;
5356
SynchronizationScope Scope = CrossThread;
5358
if (Lex.getKind() == lltok::kw_atomic) {
5363
bool isVolatile = false;
5364
if (Lex.getKind() == lltok::kw_volatile) {
5370
LocTy ExplicitTypeLoc = Lex.getLoc();
5371
if (ParseType(Ty) ||
5372
ParseToken(lltok::comma, "expected comma after load's type") ||
5373
ParseTypeAndValue(Val, Loc, PFS) ||
5374
ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5375
ParseOptionalCommaAlign(Alignment, AteExtraComma))
5378
if (!Val->getType()->isPointerTy() || !Ty->isFirstClassType())
5379
return Error(Loc, "load operand must be a pointer to a first class type");
5380
if (isAtomic && !Alignment)
5381
return Error(Loc, "atomic load must have explicit non-zero alignment");
5382
if (Ordering == Release || Ordering == AcquireRelease)
5383
return Error(Loc, "atomic load cannot use Release ordering");
5385
if (Ty != cast<PointerType>(Val->getType())->getElementType())
5386
return Error(ExplicitTypeLoc,
5387
"explicit pointee type doesn't match operand's pointee type");
5389
Inst = new LoadInst(Ty, Val, "", isVolatile, Alignment, Ordering, Scope);
5390
return AteExtraComma ? InstExtraComma : InstNormal;
5395
/// ::= 'store' 'volatile'? TypeAndValue ',' TypeAndValue (',' 'align' i32)?
5396
/// ::= 'store' 'atomic' 'volatile'? TypeAndValue ',' TypeAndValue
5397
/// 'singlethread'? AtomicOrdering (',' 'align' i32)?
5398
int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS) {
5399
Value *Val, *Ptr; LocTy Loc, PtrLoc;
5400
unsigned Alignment = 0;
5401
bool AteExtraComma = false;
5402
bool isAtomic = false;
5403
AtomicOrdering Ordering = NotAtomic;
5404
SynchronizationScope Scope = CrossThread;
5406
if (Lex.getKind() == lltok::kw_atomic) {
5411
bool isVolatile = false;
5412
if (Lex.getKind() == lltok::kw_volatile) {
5417
if (ParseTypeAndValue(Val, Loc, PFS) ||
5418
ParseToken(lltok::comma, "expected ',' after store operand") ||
5419
ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5420
ParseScopeAndOrdering(isAtomic, Scope, Ordering) ||
5421
ParseOptionalCommaAlign(Alignment, AteExtraComma))
5424
if (!Ptr->getType()->isPointerTy())
5425
return Error(PtrLoc, "store operand must be a pointer");
5426
if (!Val->getType()->isFirstClassType())
5427
return Error(Loc, "store operand must be a first class value");
5428
if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5429
return Error(Loc, "stored value and pointer type do not match");
5430
if (isAtomic && !Alignment)
5431
return Error(Loc, "atomic store must have explicit non-zero alignment");
5432
if (Ordering == Acquire || Ordering == AcquireRelease)
5433
return Error(Loc, "atomic store cannot use Acquire ordering");
5435
Inst = new StoreInst(Val, Ptr, isVolatile, Alignment, Ordering, Scope);
5436
return AteExtraComma ? InstExtraComma : InstNormal;
5440
/// ::= 'cmpxchg' 'weak'? 'volatile'? TypeAndValue ',' TypeAndValue ','
5441
/// TypeAndValue 'singlethread'? AtomicOrdering AtomicOrdering
5442
int LLParser::ParseCmpXchg(Instruction *&Inst, PerFunctionState &PFS) {
5443
Value *Ptr, *Cmp, *New; LocTy PtrLoc, CmpLoc, NewLoc;
5444
bool AteExtraComma = false;
5445
AtomicOrdering SuccessOrdering = NotAtomic;
5446
AtomicOrdering FailureOrdering = NotAtomic;
5447
SynchronizationScope Scope = CrossThread;
5448
bool isVolatile = false;
5449
bool isWeak = false;
5451
if (EatIfPresent(lltok::kw_weak))
5454
if (EatIfPresent(lltok::kw_volatile))
5457
if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5458
ParseToken(lltok::comma, "expected ',' after cmpxchg address") ||
5459
ParseTypeAndValue(Cmp, CmpLoc, PFS) ||
5460
ParseToken(lltok::comma, "expected ',' after cmpxchg cmp operand") ||
5461
ParseTypeAndValue(New, NewLoc, PFS) ||
5462
ParseScopeAndOrdering(true /*Always atomic*/, Scope, SuccessOrdering) ||
5463
ParseOrdering(FailureOrdering))
5466
if (SuccessOrdering == Unordered || FailureOrdering == Unordered)
5467
return TokError("cmpxchg cannot be unordered");
5468
if (SuccessOrdering < FailureOrdering)
5469
return TokError("cmpxchg must be at least as ordered on success as failure");
5470
if (FailureOrdering == Release || FailureOrdering == AcquireRelease)
5471
return TokError("cmpxchg failure ordering cannot include release semantics");
5472
if (!Ptr->getType()->isPointerTy())
5473
return Error(PtrLoc, "cmpxchg operand must be a pointer");
5474
if (cast<PointerType>(Ptr->getType())->getElementType() != Cmp->getType())
5475
return Error(CmpLoc, "compare value and pointer type do not match");
5476
if (cast<PointerType>(Ptr->getType())->getElementType() != New->getType())
5477
return Error(NewLoc, "new value and pointer type do not match");
5478
if (!New->getType()->isIntegerTy())
5479
return Error(NewLoc, "cmpxchg operand must be an integer");
5480
unsigned Size = New->getType()->getPrimitiveSizeInBits();
5481
if (Size < 8 || (Size & (Size - 1)))
5482
return Error(NewLoc, "cmpxchg operand must be power-of-two byte-sized"
5485
AtomicCmpXchgInst *CXI = new AtomicCmpXchgInst(
5486
Ptr, Cmp, New, SuccessOrdering, FailureOrdering, Scope);
5487
CXI->setVolatile(isVolatile);
5488
CXI->setWeak(isWeak);
5490
return AteExtraComma ? InstExtraComma : InstNormal;
5494
/// ::= 'atomicrmw' 'volatile'? BinOp TypeAndValue ',' TypeAndValue
5495
/// 'singlethread'? AtomicOrdering
5496
int LLParser::ParseAtomicRMW(Instruction *&Inst, PerFunctionState &PFS) {
5497
Value *Ptr, *Val; LocTy PtrLoc, ValLoc;
5498
bool AteExtraComma = false;
5499
AtomicOrdering Ordering = NotAtomic;
5500
SynchronizationScope Scope = CrossThread;
5501
bool isVolatile = false;
5502
AtomicRMWInst::BinOp Operation;
5504
if (EatIfPresent(lltok::kw_volatile))
5507
switch (Lex.getKind()) {
5508
default: return TokError("expected binary operation in atomicrmw");
5509
case lltok::kw_xchg: Operation = AtomicRMWInst::Xchg; break;
5510
case lltok::kw_add: Operation = AtomicRMWInst::Add; break;
5511
case lltok::kw_sub: Operation = AtomicRMWInst::Sub; break;
5512
case lltok::kw_and: Operation = AtomicRMWInst::And; break;
5513
case lltok::kw_nand: Operation = AtomicRMWInst::Nand; break;
5514
case lltok::kw_or: Operation = AtomicRMWInst::Or; break;
5515
case lltok::kw_xor: Operation = AtomicRMWInst::Xor; break;
5516
case lltok::kw_max: Operation = AtomicRMWInst::Max; break;
5517
case lltok::kw_min: Operation = AtomicRMWInst::Min; break;
5518
case lltok::kw_umax: Operation = AtomicRMWInst::UMax; break;
5519
case lltok::kw_umin: Operation = AtomicRMWInst::UMin; break;
5521
Lex.Lex(); // Eat the operation.
5523
if (ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
5524
ParseToken(lltok::comma, "expected ',' after atomicrmw address") ||
5525
ParseTypeAndValue(Val, ValLoc, PFS) ||
5526
ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5529
if (Ordering == Unordered)
5530
return TokError("atomicrmw cannot be unordered");
5531
if (!Ptr->getType()->isPointerTy())
5532
return Error(PtrLoc, "atomicrmw operand must be a pointer");
5533
if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
5534
return Error(ValLoc, "atomicrmw value and pointer type do not match");
5535
if (!Val->getType()->isIntegerTy())
5536
return Error(ValLoc, "atomicrmw operand must be an integer");
5537
unsigned Size = Val->getType()->getPrimitiveSizeInBits();
5538
if (Size < 8 || (Size & (Size - 1)))
5539
return Error(ValLoc, "atomicrmw operand must be power-of-two byte-sized"
5542
AtomicRMWInst *RMWI =
5543
new AtomicRMWInst(Operation, Ptr, Val, Ordering, Scope);
5544
RMWI->setVolatile(isVolatile);
5546
return AteExtraComma ? InstExtraComma : InstNormal;
5550
/// ::= 'fence' 'singlethread'? AtomicOrdering
5551
int LLParser::ParseFence(Instruction *&Inst, PerFunctionState &PFS) {
5552
AtomicOrdering Ordering = NotAtomic;
5553
SynchronizationScope Scope = CrossThread;
5554
if (ParseScopeAndOrdering(true /*Always atomic*/, Scope, Ordering))
5557
if (Ordering == Unordered)
5558
return TokError("fence cannot be unordered");
5559
if (Ordering == Monotonic)
5560
return TokError("fence cannot be monotonic");
5562
Inst = new FenceInst(Context, Ordering, Scope);
5566
/// ParseGetElementPtr
5567
/// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
5568
int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
5569
Value *Ptr = nullptr;
5570
Value *Val = nullptr;
5573
bool InBounds = EatIfPresent(lltok::kw_inbounds);
5576
LocTy ExplicitTypeLoc = Lex.getLoc();
5577
if (ParseType(Ty) ||
5578
ParseToken(lltok::comma, "expected comma after getelementptr's type") ||
5579
ParseTypeAndValue(Ptr, Loc, PFS))
5582
Type *BaseType = Ptr->getType();
5583
PointerType *BasePointerType = dyn_cast<PointerType>(BaseType->getScalarType());
5584
if (!BasePointerType)
5585
return Error(Loc, "base of getelementptr must be a pointer");
5587
if (Ty != BasePointerType->getElementType())
5588
return Error(ExplicitTypeLoc,
5589
"explicit pointee type doesn't match operand's pointee type");
5591
SmallVector<Value*, 16> Indices;
5592
bool AteExtraComma = false;
5593
// GEP returns a vector of pointers if at least one of parameters is a vector.
5594
// All vector parameters should have the same vector width.
5595
unsigned GEPWidth = BaseType->isVectorTy() ?
5596
BaseType->getVectorNumElements() : 0;
5598
while (EatIfPresent(lltok::comma)) {
5599
if (Lex.getKind() == lltok::MetadataVar) {
5600
AteExtraComma = true;
5603
if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
5604
if (!Val->getType()->getScalarType()->isIntegerTy())
5605
return Error(EltLoc, "getelementptr index must be an integer");
5607
if (Val->getType()->isVectorTy()) {
5608
unsigned ValNumEl = Val->getType()->getVectorNumElements();
5609
if (GEPWidth && GEPWidth != ValNumEl)
5610
return Error(EltLoc,
5611
"getelementptr vector index has a wrong number of elements");
5612
GEPWidth = ValNumEl;
5614
Indices.push_back(Val);
5617
SmallPtrSet<const Type*, 4> Visited;
5618
if (!Indices.empty() && !Ty->isSized(&Visited))
5619
return Error(Loc, "base element of getelementptr must be sized");
5621
if (!GetElementPtrInst::getIndexedType(Ty, Indices))
5622
return Error(Loc, "invalid getelementptr indices");
5623
Inst = GetElementPtrInst::Create(Ty, Ptr, Indices);
5625
cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
5626
return AteExtraComma ? InstExtraComma : InstNormal;
5629
/// ParseExtractValue
5630
/// ::= 'extractvalue' TypeAndValue (',' uint32)+
5631
int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
5632
Value *Val; LocTy Loc;
5633
SmallVector<unsigned, 4> Indices;
5635
if (ParseTypeAndValue(Val, Loc, PFS) ||
5636
ParseIndexList(Indices, AteExtraComma))
5639
if (!Val->getType()->isAggregateType())
5640
return Error(Loc, "extractvalue operand must be aggregate type");
5642
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
5643
return Error(Loc, "invalid indices for extractvalue");
5644
Inst = ExtractValueInst::Create(Val, Indices);
5645
return AteExtraComma ? InstExtraComma : InstNormal;
5648
/// ParseInsertValue
5649
/// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
5650
int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
5651
Value *Val0, *Val1; LocTy Loc0, Loc1;
5652
SmallVector<unsigned, 4> Indices;
5654
if (ParseTypeAndValue(Val0, Loc0, PFS) ||
5655
ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
5656
ParseTypeAndValue(Val1, Loc1, PFS) ||
5657
ParseIndexList(Indices, AteExtraComma))
5660
if (!Val0->getType()->isAggregateType())
5661
return Error(Loc0, "insertvalue operand must be aggregate type");
5663
Type *IndexedType = ExtractValueInst::getIndexedType(Val0->getType(), Indices);
5665
return Error(Loc0, "invalid indices for insertvalue");
5666
if (IndexedType != Val1->getType())
5667
return Error(Loc1, "insertvalue operand and field disagree in type: '" +
5668
getTypeString(Val1->getType()) + "' instead of '" +
5669
getTypeString(IndexedType) + "'");
5670
Inst = InsertValueInst::Create(Val0, Val1, Indices);
5671
return AteExtraComma ? InstExtraComma : InstNormal;
5674
//===----------------------------------------------------------------------===//
5675
// Embedded metadata.
5676
//===----------------------------------------------------------------------===//
5678
/// ParseMDNodeVector
5679
/// ::= { Element (',' Element)* }
5681
/// ::= 'null' | TypeAndValue
5682
bool LLParser::ParseMDNodeVector(SmallVectorImpl<Metadata *> &Elts) {
5683
if (ParseToken(lltok::lbrace, "expected '{' here"))
5686
// Check for an empty list.
5687
if (EatIfPresent(lltok::rbrace))
5691
// Null is a special case since it is typeless.
5692
if (EatIfPresent(lltok::kw_null)) {
5693
Elts.push_back(nullptr);
5698
if (ParseMetadata(MD, nullptr))
5701
} while (EatIfPresent(lltok::comma));
5703
return ParseToken(lltok::rbrace, "expected end of metadata node");
5706
//===----------------------------------------------------------------------===//
5707
// Use-list order directives.
5708
//===----------------------------------------------------------------------===//
5709
bool LLParser::sortUseListOrder(Value *V, ArrayRef<unsigned> Indexes,
5712
return Error(Loc, "value has no uses");
5714
unsigned NumUses = 0;
5715
SmallDenseMap<const Use *, unsigned, 16> Order;
5716
for (const Use &U : V->uses()) {
5717
if (++NumUses > Indexes.size())
5719
Order[&U] = Indexes[NumUses - 1];
5722
return Error(Loc, "value only has one use");
5723
if (Order.size() != Indexes.size() || NumUses > Indexes.size())
5724
return Error(Loc, "wrong number of indexes, expected " +
5725
Twine(std::distance(V->use_begin(), V->use_end())));
5727
V->sortUseList([&](const Use &L, const Use &R) {
5728
return Order.lookup(&L) < Order.lookup(&R);
5733
/// ParseUseListOrderIndexes
5734
/// ::= '{' uint32 (',' uint32)+ '}'
5735
bool LLParser::ParseUseListOrderIndexes(SmallVectorImpl<unsigned> &Indexes) {
5736
SMLoc Loc = Lex.getLoc();
5737
if (ParseToken(lltok::lbrace, "expected '{' here"))
5739
if (Lex.getKind() == lltok::rbrace)
5740
return Lex.Error("expected non-empty list of uselistorder indexes");
5742
// Use Offset, Max, and IsOrdered to check consistency of indexes. The
5743
// indexes should be distinct numbers in the range [0, size-1], and should
5745
unsigned Offset = 0;
5747
bool IsOrdered = true;
5748
assert(Indexes.empty() && "Expected empty order vector");
5751
if (ParseUInt32(Index))
5754
// Update consistency checks.
5755
Offset += Index - Indexes.size();
5756
Max = std::max(Max, Index);
5757
IsOrdered &= Index == Indexes.size();
5759
Indexes.push_back(Index);
5760
} while (EatIfPresent(lltok::comma));
5762
if (ParseToken(lltok::rbrace, "expected '}' here"))
5765
if (Indexes.size() < 2)
5766
return Error(Loc, "expected >= 2 uselistorder indexes");
5767
if (Offset != 0 || Max >= Indexes.size())
5768
return Error(Loc, "expected distinct uselistorder indexes in range [0, size)");
5770
return Error(Loc, "expected uselistorder indexes to change the order");
5775
/// ParseUseListOrder
5776
/// ::= 'uselistorder' Type Value ',' UseListOrderIndexes
5777
bool LLParser::ParseUseListOrder(PerFunctionState *PFS) {
5778
SMLoc Loc = Lex.getLoc();
5779
if (ParseToken(lltok::kw_uselistorder, "expected uselistorder directive"))
5783
SmallVector<unsigned, 16> Indexes;
5784
if (ParseTypeAndValue(V, PFS) ||
5785
ParseToken(lltok::comma, "expected comma in uselistorder directive") ||
5786
ParseUseListOrderIndexes(Indexes))
5789
return sortUseListOrder(V, Indexes, Loc);
5792
/// ParseUseListOrderBB
5793
/// ::= 'uselistorder_bb' @foo ',' %bar ',' UseListOrderIndexes
5794
bool LLParser::ParseUseListOrderBB() {
5795
assert(Lex.getKind() == lltok::kw_uselistorder_bb);
5796
SMLoc Loc = Lex.getLoc();
5800
SmallVector<unsigned, 16> Indexes;
5801
if (ParseValID(Fn) ||
5802
ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5803
ParseValID(Label) ||
5804
ParseToken(lltok::comma, "expected comma in uselistorder_bb directive") ||
5805
ParseUseListOrderIndexes(Indexes))
5808
// Check the function.
5810
if (Fn.Kind == ValID::t_GlobalName)
5811
GV = M->getNamedValue(Fn.StrVal);
5812
else if (Fn.Kind == ValID::t_GlobalID)
5813
GV = Fn.UIntVal < NumberedVals.size() ? NumberedVals[Fn.UIntVal] : nullptr;
5815
return Error(Fn.Loc, "expected function name in uselistorder_bb");
5817
return Error(Fn.Loc, "invalid function forward reference in uselistorder_bb");
5818
auto *F = dyn_cast<Function>(GV);
5820
return Error(Fn.Loc, "expected function name in uselistorder_bb");
5821
if (F->isDeclaration())
5822
return Error(Fn.Loc, "invalid declaration in uselistorder_bb");
5824
// Check the basic block.
5825
if (Label.Kind == ValID::t_LocalID)
5826
return Error(Label.Loc, "invalid numeric label in uselistorder_bb");
5827
if (Label.Kind != ValID::t_LocalName)
5828
return Error(Label.Loc, "expected basic block name in uselistorder_bb");
5829
Value *V = F->getValueSymbolTable().lookup(Label.StrVal);
5831
return Error(Label.Loc, "invalid basic block in uselistorder_bb");
5832
if (!isa<BasicBlock>(V))
5833
return Error(Label.Loc, "expected basic block in uselistorder_bb");
5835
return sortUseListOrder(V, Indexes, Loc);