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Add support for constant expr casts 

llvm-svn: 12564
This commit is contained in:
Chris Lattner 2004-03-31 02:56:11 +00:00
parent 974efc72be
commit 467cb2bc5d
1 changed files with 8 additions and 0 deletions
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8
llvm/lib/VMCore/Constants.cpp
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@ -571,6 +571,14 @@ void ConstantExpr::replaceUsesOfWithOnConstant(Value *From, Value *ToV,
} else if (getOpcode() == Instruction::Cast) {
assert(getOperand(0) == From && "Cast only has one use!");
Replacement = ConstantExpr::getCast(To, getType());
} else if (getOpcode() == Instruction::Select) {
Constant *C1 = getOperand(0);
Constant *C2 = getOperand(1);
Constant *C3 = getOperand(2);
if (C1 == From) C1 = To;
if (C2 == From) C2 = To;
if (C3 == From) C3 = To;
Replacement = ConstantExpr::getSelect(C1, C2, C3);
} else if (getNumOperands() == 2) {
Constant *C1 = getOperand(0);
Constant *C2 = getOperand(1);