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Two fixes:

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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
This commit is contained in:
Chris Lattner 2004-08-08 01:30:07 +00:00
parent 5e2e27284b
commit 68392422e6
1 changed files with 3 additions and 4 deletions
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7
lib/Transforms/ExprTypeConvert.cpp
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@ -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);
Value *NewOther = ConvertExpressionToType(OtherOp, NewTy, VMC, TD);
Res->setOperand(OtherIdx, NewOther);
Res->setOperand(!OtherIdx, NewVal);
Value *NewOther = ConvertExpressionToType(OtherOp, NewTy, VMC, TD);
Res->setOperand(OtherIdx, NewOther);
break;
}
case Instruction::Shl: