Fix Transforms/InstCombine/2006-10-26-VectorReassoc.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31200 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/VMCore/Instruction.cpp b/lib/VMCore/Instruction.cpp
index c5e8e30..9b5fa71 100644
--- a/lib/VMCore/Instruction.cpp
+++ b/lib/VMCore/Instruction.cpp
@@ -172,11 +172,12 @@
/// 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;
}