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//===- NeonEmitter.cpp - Generate arm_neon.h for use with clang -*- C++ -*-===//
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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 tablegen backend is responsible for emitting arm_neon.h, which includes
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// a declaration and definition of each function specified by the ARM NEON
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// compiler interface. See ARM document DUI0348B.
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// Each NEON instruction is implemented in terms of 1 or more functions which
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// are suffixed with the element type of the input vectors. Functions may be
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// implemented in terms of generic vector operations such as +, *, -, etc. or
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// by calling a __builtin_-prefixed function which will be handled by clang's
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// Additional validation code can be generated by this file when runHeader() is
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// called, rather than the normal run() entry point.
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//===----------------------------------------------------------------------===//
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#include "NeonEmitter.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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/// ParseTypes - break down a string such as "fQf" into a vector of StringRefs,
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/// which each StringRef representing a single type declared in the string.
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/// for "fQf" we would end up with 2 StringRefs, "f", and "Qf", representing
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/// 2xfloat and 4xfloat respectively.
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static void ParseTypes(Record *r, std::string &s,
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SmallVectorImpl<StringRef> &TV) {
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const char *data = s.data();
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for (unsigned i = 0, e = s.size(); i != e; ++i, ++len) {
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if (data[len] == 'P' || data[len] == 'Q' || data[len] == 'U')
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throw TGError(r->getLoc(),
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"Unexpected letter: " + std::string(data + len, 1));
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TV.push_back(StringRef(data, len + 1));
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/// Widen - Convert a type code into the next wider type. char -> short,
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/// short -> int, etc.
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static char Widen(const char t) {
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default: throw "unhandled type in widen!";
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/// Narrow - Convert a type code into the next smaller type. short -> char,
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/// float -> half float, etc.
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static char Narrow(const char t) {
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default: throw "unhandled type in widen!";
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/// For a particular StringRef, return the base type code, and whether it has
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/// the quad-vector, polynomial, or unsigned modifiers set.
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static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) {
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if (ty[off] == 'Q') {
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if (ty[off] == 'P') {
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// remember unsigned.
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if (ty[off] == 'U') {
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// base type to get the type string for.
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/// ModType - Transform a type code and its modifiers based on a mod code. The
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/// mod code definitions may be found at the top of arm_neon.td.
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static char ModType(const char mod, char type, bool &quad, bool &poly,
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bool &usgn, bool &scal, bool &cnst, bool &pntr) {
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/// TypeString - for a modifier and type, generate the name of the typedef for
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/// that type. If generic is true, emit the generic vector type rather than
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/// the public NEON type. QUc -> uint8x8_t / __neon_uint8x8_t.
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static std::string TypeString(const char mod, StringRef typestr,
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bool generic = false) {
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// base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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// Based on the modifying character, change the type and width if necessary.
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type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
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s += poly ? "poly8" : "int8";
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s += quad ? "x16" : "x8";
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s += poly ? "poly16" : "int16";
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s += quad ? "x8" : "x4";
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s += quad ? "x4" : "x2";
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s += quad ? "x2" : "x1";
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s += quad ? "x8" : "x4";
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s += quad ? "x4" : "x2";
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throw "unhandled type!";
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// Append _t, finishing the type string typedef type.
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/// BuiltinTypeString - for a modifier and type, generate the clang
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/// BuiltinsARM.def prototype code for the function. See the top of clang's
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/// Builtins.def for a description of the type strings.
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static std::string BuiltinTypeString(const char mod, StringRef typestr,
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ClassKind ck, bool ret) {
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// base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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// Based on the modifying character, change the type and width if necessary.
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type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
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usgn = usgn | poly | ((ck == ClassI || ck == ClassW) && scal && type != 'f');
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// Since the return value must be one type, return a vector type of the
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// appropriate width which we will bitcast. An exception is made for
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// returning structs of 2, 3, or 4 vectors which are returned in a sret-like
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// fashion, storing them to a pointer arg.
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if (mod == '2' || mod == '3' || mod == '4')
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if (mod == 'f' || (ck != ClassB && type == 'f'))
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return quad ? "V4f" : "V2f";
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if (ck != ClassB && type == 's')
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return quad ? "V8s" : "V4s";
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if (ck != ClassB && type == 'i')
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return quad ? "V4i" : "V2i";
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if (ck != ClassB && type == 'l')
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return quad ? "V2LLi" : "V1LLi";
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return quad ? "V16c" : "V8c";
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// Non-return array types are passed as individual vectors.
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return quad ? "V16cV16c" : "V8cV8c";
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return quad ? "V16cV16cV16c" : "V8cV8cV8c";
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return quad ? "V16cV16cV16cV16c" : "V8cV8cV8cV8c";
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if (mod == 'f' || (ck != ClassB && type == 'f'))
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return quad ? "V4f" : "V2f";
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if (ck != ClassB && type == 's')
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return quad ? "V8s" : "V4s";
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if (ck != ClassB && type == 'i')
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return quad ? "V4i" : "V2i";
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if (ck != ClassB && type == 'l')
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return quad ? "V2LLi" : "V1LLi";
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return quad ? "V16c" : "V8c";
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/// StructTag - generate the name of the struct tag for a type.
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/// These names are mandated by ARM's ABI.
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static std::string StructTag(StringRef typestr) {
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// base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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s += quad ? "128_" : "64_";
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s += poly ? "poly8" : "int8";
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s += poly ? "poly16" : "int16";
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throw "unhandled type!";
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// Append _t, finishing the struct tag name.
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/// MangleName - Append a type or width suffix to a base neon function name,
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/// and insert a 'q' in the appropriate location if the operation works on
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/// 128b rather than 64b. E.g. turn "vst2_lane" into "vst2q_lane_f32", etc.
423
static std::string MangleName(const std::string &name, StringRef typestr,
425
if (name == "vcvt_f32_f16")
431
char type = ClassifyType(typestr, quad, poly, usgn);
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std::string s = name;
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case ClassS: s += poly ? "_p8" : usgn ? "_u8" : "_s8"; break;
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case ClassI: s += "_i8"; break;
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case ClassW: s += "_8"; break;
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case ClassS: s += poly ? "_p16" : usgn ? "_u16" : "_s16"; break;
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case ClassI: s += "_i16"; break;
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case ClassW: s += "_16"; break;
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case ClassS: s += usgn ? "_u32" : "_s32"; break;
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case ClassI: s += "_i32"; break;
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case ClassW: s += "_32"; break;
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case ClassS: s += usgn ? "_u64" : "_s64"; break;
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case ClassI: s += "_i64"; break;
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case ClassW: s += "_64"; break;
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case ClassI: s += "_f16"; break;
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case ClassW: s += "_16"; break;
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case ClassI: s += "_f32"; break;
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case ClassW: s += "_32"; break;
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throw "unhandled type!";
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// Insert a 'q' before the first '_' character so that it ends up before
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// _lane or _n on vector-scalar operations.
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size_t pos = s.find('_');
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s = s.insert(pos, "q");
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// Generate the string "(argtype a, argtype b, ...)"
501
static std::string GenArgs(const std::string &proto, StringRef typestr) {
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bool define = proto.find('i') != std::string::npos;
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for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
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s += TypeString(proto[i], typestr);
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static std::string Duplicate(unsigned nElts, StringRef typestr,
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const std::string &a) {
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s = "(__neon_" + TypeString('d', typestr) + "){ ";
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for (unsigned i = 0; i != nElts; ++i) {
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// Generate the definition for this intrinsic, e.g. "a + b" for OpAdd.
538
// If structTypes is true, the NEON types are structs of vector types rather
539
// than vector types, and the call becomes "a.val + b.val"
540
static std::string GenOpString(OpKind op, const std::string &proto,
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StringRef typestr, bool structTypes = true) {
542
bool dummy, quad = false;
543
char type = ClassifyType(typestr, quad, dummy, dummy);
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case 'c': nElts = 8; break;
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case 's': nElts = 4; break;
548
case 'i': nElts = 2; break;
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case 'l': nElts = 1; break;
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case 'h': nElts = 4; break;
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case 'f': nElts = 2; break;
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std::string ts = TypeString(proto[0], typestr);
555
std::string s = ts + " r; r";
563
if (proto.size() > 1)
564
a = (structTypes && proto[1] != 'l' && proto[1] != 's') ? "a.val" : "a";
565
b = structTypes ? "b.val" : "b";
566
c = structTypes ? "c.val" : "c";
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b = Duplicate(nElts << (int)quad, typestr, "b");
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c = Duplicate(nElts << (int)quad, typestr, "c");
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s += a + " + ( " + b + " * " + c + " )";
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c = Duplicate(nElts << (int)quad, typestr, "c");
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s += a + " - ( " + b + " * " + c + " )";
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s += "(__neon_" + ts + ")(" + a + " == " + b + ")";
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s += "(__neon_" + ts + ")(" + a + " >= " + b + ")";
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s += "(__neon_" + ts + ")(" + a + " <= " + b + ")";
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s += "(__neon_" + ts + ")(" + a + " > " + b + ")";
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s += "(__neon_" + ts + ")(" + a + " < " + b + ")";
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s += "(__neon_" + ts + ")" + a;
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s += "__builtin_shufflevector((__neon_int64x1_t)" + a;
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s += ", (__neon_int64x1_t)" + b + ", 0, 1)";
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s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[1])";
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s += "(__neon_int64x1_t)(((__neon_int64x2_t)" + a + ")[0])";
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s += Duplicate(nElts << (int)quad, typestr, a);
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// ((0 & 1) | (~0 & 2))
644
ts = TypeString(proto[1], typestr);
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s += "( " + a + " & (__neon_" + ts + ")" + b + ") | ";
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s += "(~" + a + " & (__neon_" + ts + ")" + c + ")";
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = 2; i <= nElts << (int)quad; i += 2)
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for (unsigned j = 0; j != 2; ++j)
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s += ", " + utostr(i - j - 1);
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = nElts; i <= nElts << (1 + (int)quad); i += nElts)
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for (unsigned j = 0; j != nElts; ++j)
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s += ", " + utostr(i - j - 1);
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s += "__builtin_shufflevector(" + a + ", " + a;
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for (unsigned i = nElts; i <= nElts << (int)quad; i += nElts)
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for (unsigned j = 0; j != nElts; ++j)
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s += ", " + utostr(i - j - 1);
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throw "unknown OpKind!";
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static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
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unsigned mod = proto[0];
682
if (mod == 'v' || mod == 'f')
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// Base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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// Based on the modifying character, change the type and width if necessary.
696
type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
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if (quad && proto[1] != 'g')
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throw "unhandled type!";
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// Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a)
730
// If structTypes is true, the NEON types are structs of vector types rather
731
// than vector types, and the call becomes __builtin_neon_cls(a.val)
732
static std::string GenBuiltin(const std::string &name, const std::string &proto,
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StringRef typestr, ClassKind ck,
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bool structTypes = true) {
735
bool dummy, quad = false;
736
char type = ClassifyType(typestr, quad, dummy, dummy);
739
case 'c': nElts = 8; break;
740
case 's': nElts = 4; break;
741
case 'i': nElts = 2; break;
742
case 'l': nElts = 1; break;
743
case 'h': nElts = 4; break;
744
case 'f': nElts = 2; break;
746
if (quad) nElts <<= 1;
751
// If this builtin returns a struct 2, 3, or 4 vectors, pass it as an implicit
752
// sret-like argument.
753
bool sret = (proto[0] == '2' || proto[0] == '3' || proto[0] == '4');
755
// If this builtin takes an immediate argument, we need to #define it rather
756
// than use a standard declaration, so that SemaChecking can range check
757
// the immediate passed by the user.
758
bool define = proto.find('i') != std::string::npos;
760
// If all types are the same size, bitcasting the args will take care
761
// of arg checking. The actual signedness etc. will be taken care of with
763
if (proto.find('s') == std::string::npos)
766
if (proto[0] != 'v') {
767
std::string ts = TypeString(proto[0], typestr);
771
s += "({ " + ts + " r; ";
772
else if (proto[0] != 's')
773
s += "(" + ts + "){(__neon_" + ts + ")";
778
if (structTypes && proto[0] != 's' && proto[0] != 'i' && proto[0] != 'l')
785
bool splat = proto.find('a') != std::string::npos;
787
s += "__builtin_neon_";
789
std::string vname(name, 0, name.size()-2);
790
s += MangleName(vname, typestr, ck);
792
s += MangleName(name, typestr, ck);
796
// Pass the address of the return variable as the first argument to sret-like
801
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
802
std::string args = std::string(&arg, 1);
804
args = "(" + args + ")";
806
// Handle multiple-vector values specially, emitting each subvector as an
807
// argument to the __builtin.
808
if (structTypes && (proto[i] == '2' || proto[i] == '3' || proto[i] == '4')){
809
for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) {
810
s += args + ".val[" + utostr(vi) + "].val";
820
if (splat && (i + 1) == e)
821
s += Duplicate(nElts, typestr, args);
825
if (structTypes && proto[i] != 's' && proto[i] != 'i' && proto[i] != 'l' &&
826
proto[i] != 'p' && proto[i] != 'c' && proto[i] != 'a') {
833
// Extra constant integer to hold type class enum for this function, e.g. s8
835
s += ", " + utostr(GetNeonEnum(proto, typestr));
842
if (proto[0] != 'v') {
846
else if (proto[0] != 's')
855
static std::string GenBuiltinDef(const std::string &name,
856
const std::string &proto,
857
StringRef typestr, ClassKind ck) {
858
std::string s("BUILTIN(__builtin_neon_");
860
// If all types are the same size, bitcasting the args will take care
861
// of arg checking. The actual signedness etc. will be taken care of with
863
if (proto.find('s') == std::string::npos)
866
s += MangleName(name, typestr, ck);
869
for (unsigned i = 0, e = proto.size(); i != e; ++i)
870
s += BuiltinTypeString(proto[i], typestr, ck, i == 0);
872
// Extra constant integer to hold type class enum for this function, e.g. s8
880
/// run - Read the records in arm_neon.td and output arm_neon.h. arm_neon.h
881
/// is comprised of type definitions and function declarations.
882
void NeonEmitter::run(raw_ostream &OS) {
883
EmitSourceFileHeader("ARM NEON Header", OS);
885
// FIXME: emit license into file?
887
OS << "#ifndef __ARM_NEON_H\n";
888
OS << "#define __ARM_NEON_H\n\n";
890
OS << "#ifndef __ARM_NEON__\n";
891
OS << "#error \"NEON support not enabled\"\n";
894
OS << "#include <stdint.h>\n\n";
896
// Emit NEON-specific scalar typedefs.
897
OS << "typedef float float32_t;\n";
898
OS << "typedef uint8_t poly8_t;\n";
899
OS << "typedef uint16_t poly16_t;\n";
900
OS << "typedef uint16_t float16_t;\n";
902
// Emit Neon vector typedefs.
903
std::string TypedefTypes("cQcsQsiQilQlUcQUcUsQUsUiQUiUlQUlhQhfQfPcQPcPsQPs");
904
SmallVector<StringRef, 24> TDTypeVec;
905
ParseTypes(0, TypedefTypes, TDTypeVec);
907
// Emit vector typedefs.
908
for (unsigned v = 1; v != 5; ++v) {
909
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
910
bool dummy, quad = false;
911
(void) ClassifyType(TDTypeVec[i], quad, dummy, dummy);
912
OS << "typedef __attribute__(( __vector_size__(";
914
OS << utostr(8*v*(quad ? 2 : 1)) << ") )) ";
918
OS << TypeString('s', TDTypeVec[i]);
921
char t = (v == 1) ? 'd' : '0' + v;
922
OS << TypeString(t, TDTypeVec[i]) << ";\n";
927
// Emit struct typedefs.
928
for (unsigned vi = 1; vi != 5; ++vi) {
929
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
930
std::string ts = TypeString('d', TDTypeVec[i], vi == 1);
931
std::string vs = TypeString((vi > 1) ? '0' + vi : 'd', TDTypeVec[i]);
932
std::string tag = (vi > 1) ? vs : StructTag(TDTypeVec[i]);
933
OS << "typedef struct " << tag << " {\n";
934
OS << " " << ts << " val";
936
OS << "[" << utostr(vi) << "]";
937
OS << ";\n} " << vs << ";\n\n";
941
OS << "#define __ai static __attribute__((__always_inline__))\n\n";
943
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
945
// Unique the return+pattern types, and assign them.
946
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
948
std::string name = LowercaseString(R->getName());
949
std::string Proto = R->getValueAsString("Prototype");
950
std::string Types = R->getValueAsString("Types");
952
SmallVector<StringRef, 16> TypeVec;
953
ParseTypes(R, Types, TypeVec);
955
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
957
bool define = Proto.find('i') != std::string::npos;
959
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
960
assert(!Proto.empty() && "");
962
// static always inline + return type
966
OS << "__ai " << TypeString(Proto[0], TypeVec[ti]);
968
// Function name with type suffix
969
OS << " " << MangleName(name, TypeVec[ti], ClassS);
971
// Function arguments
972
OS << GenArgs(Proto, TypeVec[ti]);
981
OS << GenOpString(k, Proto, TypeVec[ti]);
983
if (R->getSuperClasses().size() < 2)
984
throw TGError(R->getLoc(), "Builtin has no class kind");
986
ClassKind ck = ClassMap[R->getSuperClasses()[1]];
989
throw TGError(R->getLoc(), "Builtin has no class kind");
990
OS << GenBuiltin(name, Proto, TypeVec[ti], ck);
998
OS << "#undef __ai\n\n";
999
OS << "#endif /* __ARM_NEON_H */\n";
1002
static unsigned RangeFromType(StringRef typestr) {
1003
// base type to get the type string for.
1004
bool quad = false, dummy = false;
1005
char type = ClassifyType(typestr, quad, dummy, dummy);
1009
return (8 << (int)quad) - 1;
1012
return (4 << (int)quad) - 1;
1015
return (2 << (int)quad) - 1;
1017
return (1 << (int)quad) - 1;
1019
throw "unhandled type!";
1022
assert(0 && "unreachable");
1026
/// runHeader - Emit a file with sections defining:
1027
/// 1. the NEON section of BuiltinsARM.def.
1028
/// 2. the SemaChecking code for the type overload checking.
1029
/// 3. the SemaChecking code for validation of intrinsic immedate arguments.
1030
void NeonEmitter::runHeader(raw_ostream &OS) {
1031
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
1033
StringMap<OpKind> EmittedMap;
1035
// Generate BuiltinsARM.def for NEON
1036
OS << "#ifdef GET_NEON_BUILTINS\n";
1037
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
1039
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
1043
std::string Proto = R->getValueAsString("Prototype");
1045
// Functions with 'a' (the splat code) in the type prototype should not get
1046
// their own builtin as they use the non-splat variant.
1047
if (Proto.find('a') != std::string::npos)
1050
std::string Types = R->getValueAsString("Types");
1051
SmallVector<StringRef, 16> TypeVec;
1052
ParseTypes(R, Types, TypeVec);
1054
if (R->getSuperClasses().size() < 2)
1055
throw TGError(R->getLoc(), "Builtin has no class kind");
1057
std::string name = LowercaseString(R->getName());
1058
ClassKind ck = ClassMap[R->getSuperClasses()[1]];
1060
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
1061
// Generate the BuiltinsARM.def declaration for this builtin, ensuring
1062
// that each unique BUILTIN() macro appears only once in the output
1064
std::string bd = GenBuiltinDef(name, Proto, TypeVec[ti], ck);
1065
if (EmittedMap.count(bd))
1068
EmittedMap[bd] = OpNone;
1074
// Generate the overloaded type checking code for SemaChecking.cpp
1075
OS << "#ifdef GET_NEON_OVERLOAD_CHECK\n";
1076
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
1078
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
1082
std::string Proto = R->getValueAsString("Prototype");
1083
std::string Types = R->getValueAsString("Types");
1084
std::string name = LowercaseString(R->getName());
1086
// Functions with 'a' (the splat code) in the type prototype should not get
1087
// their own builtin as they use the non-splat variant.
1088
if (Proto.find('a') != std::string::npos)
1091
// Functions which have a scalar argument cannot be overloaded, no need to
1092
// check them if we are emitting the type checking code.
1093
if (Proto.find('s') != std::string::npos)
1096
SmallVector<StringRef, 16> TypeVec;
1097
ParseTypes(R, Types, TypeVec);
1099
if (R->getSuperClasses().size() < 2)
1100
throw TGError(R->getLoc(), "Builtin has no class kind");
1102
int si = -1, qi = -1;
1103
unsigned mask = 0, qmask = 0;
1104
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
1105
// Generate the switch case(s) for this builtin for the type validation.
1106
bool quad = false, poly = false, usgn = false;
1107
(void) ClassifyType(TypeVec[ti], quad, poly, usgn);
1111
qmask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
1114
mask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
1118
OS << "case ARM::BI__builtin_neon_"
1119
<< MangleName(name, TypeVec[si], ClassB)
1120
<< ": mask = " << "0x" << utohexstr(mask) << "; break;\n";
1122
OS << "case ARM::BI__builtin_neon_"
1123
<< MangleName(name, TypeVec[qi], ClassB)
1124
<< ": mask = " << "0x" << utohexstr(qmask) << "; break;\n";
1128
// Generate the intrinsic range checking code for shift/lane immediates.
1129
OS << "#ifdef GET_NEON_IMMEDIATE_CHECK\n";
1130
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
1133
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
1137
std::string name = LowercaseString(R->getName());
1138
std::string Proto = R->getValueAsString("Prototype");
1139
std::string Types = R->getValueAsString("Types");
1141
// Functions with 'a' (the splat code) in the type prototype should not get
1142
// their own builtin as they use the non-splat variant.
1143
if (Proto.find('a') != std::string::npos)
1146
// Functions which do not have an immediate do not need to have range
1147
// checking code emitted.
1148
if (Proto.find('i') == std::string::npos)
1151
SmallVector<StringRef, 16> TypeVec;
1152
ParseTypes(R, Types, TypeVec);
1154
if (R->getSuperClasses().size() < 2)
1155
throw TGError(R->getLoc(), "Builtin has no class kind");
1157
ClassKind ck = ClassMap[R->getSuperClasses()[1]];
1159
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
1160
std::string namestr, shiftstr, rangestr;
1162
// Builtins which are overloaded by type will need to have their upper
1163
// bound computed at Sema time based on the type constant.
1164
if (Proto.find('s') == std::string::npos) {
1166
if (R->getValueAsBit("isShift")) {
1167
shiftstr = ", true";
1169
// Right shifts have an 'r' in the name, left shifts do not.
1170
if (name.find('r') != std::string::npos)
1171
rangestr = "l = 1; ";
1173
rangestr += "u = RFT(TV" + shiftstr + ")";
1175
rangestr = "u = " + utostr(RangeFromType(TypeVec[ti]));
1177
// Make sure cases appear only once by uniquing them in a string map.
1178
namestr = MangleName(name, TypeVec[ti], ck);
1179
if (EmittedMap.count(namestr))
1181
EmittedMap[namestr] = OpNone;
1183
// Calculate the index of the immediate that should be range checked.
1184
unsigned immidx = 0;
1186
// Builtins that return a struct of multiple vectors have an extra
1187
// leading arg for the struct return.
1188
if (Proto[0] == '2' || Proto[0] == '3' || Proto[0] == '4')
1191
// Add one to the index for each argument until we reach the immediate
1192
// to be checked. Structs of vectors are passed as multiple arguments.
1193
for (unsigned ii = 1, ie = Proto.size(); ii != ie; ++ii) {
1194
switch (Proto[ii]) {
1195
default: immidx += 1; break;
1196
case '2': immidx += 2; break;
1197
case '3': immidx += 3; break;
1198
case '4': immidx += 4; break;
1199
case 'i': ie = ii + 1; break;
1202
OS << "case ARM::BI__builtin_neon_" << MangleName(name, TypeVec[ti], ck)
1203
<< ": i = " << immidx << "; " << rangestr << "; break;\n";
added
removed
libclamav/c++/llvm/utils/TableGen/NeonEmitter.cpp
