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Fix Transforms/InstCombine/2006-10-26-VectorReassoc.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31200 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-10-26 18:27:26 +00:00
parent 9290885e6a
commit 4d3839ded2
1 changed files with 6 additions and 5 deletions
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11
lib/VMCore/Instruction.cpp
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@ -172,11 +172,12 @@ bool Instruction::isIdenticalTo(Instruction *I) const {
/// applied to floating point types.
///
bool Instruction::isAssociative(unsigned Opcode, const Type *Ty) {
if (Opcode == Add || Opcode == Mul ||
Opcode == And || Opcode == Or || Opcode == Xor) {
// Floating point operations do not associate!
return !Ty->isFloatingPoint();
}
if (Opcode == And || Opcode == Or || Opcode == Xor)
return true;
// Add/Mul reassociate unless they are FP or FP vectors.
if (Opcode == Add || Opcode == Mul)
return !Ty->isFPOrFPVector();
return 0;
}