r107852 is only safe with -enable-unsafe-fp-math to account for +0.0 == -0.0.
llvm-svn: 107856
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index e3db583..8ca69cd 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -2295,11 +2295,13 @@
ARMTargetLowering::getVFPCmp(SDValue &LHS, SDValue &RHS, ISD::CondCode CC,
SDValue &ARMCC, SelectionDAG &DAG,
DebugLoc dl) const {
- if ((CC == ISD::SETEQ || CC == ISD::SETOEQ ||
+ if (UnsafeFPMath &&
+ (CC == ISD::SETEQ || CC == ISD::SETOEQ ||
CC == ISD::SETNE || CC == ISD::SETUNE) &&
canBitcastToInt(LHS.getNode()) && canBitcastToInt(RHS.getNode())) {
- // If there are no othter uses of the CMP operands, and the condition
- // code is EQ oe NE, we can optimize it to an integer comparison.
+ // If unsafe fp math optimization is enabled and there are no othter uses of
+ // the CMP operands, and the condition code is EQ oe NE, we can optimize it
+ // to an integer comparison.
if (CC == ISD::SETOEQ)
CC = ISD::SETEQ;
else if (CC == ISD::SETUNE)