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Viewing changes to test/CodeGen/ARM/indirectbr-3.ll

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2015-07-15 17:51:08 UTC
  • Revision ID: package-import@ubuntu.com-20150715175108-l8mynwovkx4zx697
Tags: upstream-3.7~+rc2
Import upstream version 3.7~+rc2

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test/CodeGen/ARM/indirectbr-3.ll
 
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; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s
 
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; If ARMBaseInstrInfo::AnalyzeBlocks returns the wrong value, which was possible
 
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; for blocks with indirect branches, the IfConverter could end up deleting
 
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; blocks that were the destinations of indirect branches, leaving branches to
 
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; nowhere.
 
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; <rdar://problem/14464830>
 
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define i32 @preserve_blocks(i32 %x) {
 
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; preserve_blocks:
 
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; CHECK: Block address taken
 
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; CHECK: movs r0, #2
 
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; CHECK: movs r0, #1
 
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; CHECK-NOT: Address of block that was removed by CodeGen
 
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entry:
 
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  %c2 = icmp slt i32 %x, 3
 
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  %blockaddr = select i1 %c2, i8* blockaddress(@preserve_blocks, %ibt1), i8* blockaddress(@preserve_blocks, %ibt2)
 
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  %c1 = icmp eq i32 %x, 0
 
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  br i1 %c1, label %pre_ib, label %nextblock
 
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nextblock:
 
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  ret i32 3
 
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ibt1:
 
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  ret i32 2
 
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ibt2:
 
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  ret i32 1
 
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pre_ib:
 
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  indirectbr i8* %blockaddr, [ label %ibt1, label %ibt2 ]
 
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}