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-rw-r--r--lib/Transforms/InstCombine/InstCombineCompares.cpp16
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp
index 8cb4a59cba..e223a049f0 100644
--- a/lib/Transforms/InstCombine/InstCombineCompares.cpp
+++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp
@@ -2356,8 +2356,20 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
// Try not to increase register pressure.
BO0->hasOneUse() && BO1->hasOneUse()) {
// Determine Y and Z in the form icmp (X+Y), (X+Z).
- Value *Y = (A == C || A == D) ? B : A;
- Value *Z = (C == A || C == B) ? D : C;
+ Value *Y, *Z;
+ if (A == C) {
+ Y = B;
+ Z = D;
+ } else if (A == D) {
+ Y = B;
+ Z = C;
+ } else if (B == C) {
+ Y = A;
+ Z = D;
+ } else if (B == D) {
+ Y = A;
+ Z = C;
+ }
return new ICmpInst(Pred, Y, Z);
}