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Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
-rw-r--r--lib/Target/X86/X86ISelLowering.cpp23
1 files changed, 10 insertions, 13 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index c0831a734a..3dbedba7b9 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1970,28 +1970,25 @@ static bool translateX86CC(ISD::CondCode SetCCOpcode, bool isFP,
case ISD::SETUGE: X86CC = X86::COND_AE; break;
}
} else {
- // First determine if it requires or is profitable to flip the operands.
- bool Flip = false;
+ // First determine if it is required or is profitable to flip the operands.
+
+ // If LHS is a foldable load, but RHS is not, flip the condition.
+ if ((ISD::isNON_EXTLoad(LHS.getNode()) && LHS.hasOneUse()) &&
+ !(ISD::isNON_EXTLoad(RHS.getNode()) && RHS.hasOneUse())) {
+ SetCCOpcode = getSetCCSwappedOperands(SetCCOpcode);
+ std::swap(LHS, RHS);
+ }
+
switch (SetCCOpcode) {
default: break;
case ISD::SETOLT:
case ISD::SETOLE:
case ISD::SETUGT:
case ISD::SETUGE:
- Flip = true;
+ std::swap(LHS, RHS);
break;
}
- // If LHS is a foldable load, but RHS is not, flip the condition.
- if (!Flip &&
- (ISD::isNON_EXTLoad(LHS.getNode()) && LHS.hasOneUse()) &&
- !(ISD::isNON_EXTLoad(RHS.getNode()) && RHS.hasOneUse())) {
- SetCCOpcode = getSetCCSwappedOperands(SetCCOpcode);
- Flip = true;
- }
- if (Flip)
- std::swap(LHS, RHS);
-
// On a floating point condition, the flags are set as follows:
// ZF PF CF op
// 0 | 0 | 0 | X > Y