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| author | Chris Lattner <sabre@nondot.org> | 2004-08-08 01:30:07 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-08-08 01:30:07 +0000 |
| commit | 68392422e6f2176b5dc686332a6dd4a69b87f83b (patch) | |
| tree | ffe4e0c8677d760b0878aefcfd882392c9d6aca3 /lib/Transforms | |
| parent | 5e2e27284bd838af61453571e3989230e675b66f (diff) | |
| download | llvm-68392422e6f2176b5dc686332a6dd4a69b87f83b.tar.gz llvm-68392422e6f2176b5dc686332a6dd4a69b87f83b.tar.bz2 llvm-68392422e6f2176b5dc686332a6dd4a69b87f83b.tar.xz | |
Two fixes:
1. Fix a REALLY nasty cyclic replacement issue that Anshu discovered, causing
nondeterminstic crashes and memory corruption.
2. For performance, don't go inserting constantexpr casts of GV pointers.
This should definitely go into 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15568 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/ExprTypeConvert.cpp | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/Transforms/ExprTypeConvert.cpp b/lib/Transforms/ExprTypeConvert.cpp index 0f80c2f8bb..a657f023df 100644 --- a/lib/Transforms/ExprTypeConvert.cpp +++ b/lib/Transforms/ExprTypeConvert.cpp @@ -151,7 +151,7 @@ bool llvm::ExpressionConvertibleToType(Value *V, const Type *Ty, // If it's a constant... all constants can be converted to a different // type. // - if (Constant *CPV = dyn_cast<Constant>(V)) + if (isa<Constant>(V) && !isa<GlobalValue>(V)) return true; CTMap[V] = Ty; @@ -984,10 +984,9 @@ static void ConvertOperandToType(User *U, Value *OldVal, Value *NewVal, unsigned OtherIdx = (OldVal == I->getOperand(0)) ? 1 : 0; Value *OtherOp = I->getOperand(OtherIdx); + Res->setOperand(!OtherIdx, NewVal); Value *NewOther = ConvertExpressionToType(OtherOp, NewTy, VMC, TD); - Res->setOperand(OtherIdx, NewOther); - Res->setOperand(!OtherIdx, NewVal); break; } case Instruction::Shl: |