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Temporarily reverting r71008. It was causing this failure:

Browse Source 
Running /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/
CodeGen/X86/dg.exp ...
FAIL: /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvm.src/test/
CodeGen/X86/change-compare-stride-1.ll
Failed with exit(1) at line 2
while running: grep {cmpq       $-478,} change-compare-stride-1.ll.tmp
child process exited abnormally



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71013 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2009-05-05 20:49:46 +00:00
parent d26795a034
commit a48941087b
2 changed files with 2 additions and 125 deletions
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5
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@@ -2027,10 +2027,9 @@ ICmpInst *LoopStrengthReduce::ChangeCompareStride(Loop *L, ICmpInst *Cond,
Scale = SSInt / CmpSSInt;
int64_t NewCmpVal = CmpVal * Scale;
APInt Mul = APInt(BitWidth*2, CmpVal);
Mul = Mul * APInt(BitWidth*2, Scale);
APInt Mul = APInt(BitWidth, NewCmpVal);
// Check for overflow.
if (!Mul.isSignedIntN(BitWidth))
if (Mul.getSExtValue() != NewCmpVal)
continue;
// Watch out for overflow.