[InstCombine] Swap order of checks to improve compile time (NFC)
llvm-svn: 366962
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
index e0def81..2d218d6 100644
--- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -939,9 +939,9 @@
return V;
// memcmp(x, y, Len) == 0 -> bcmp(x, y, Len) == 0
- // `bcmp` can be more efficient than memcmp because it only has to know that
- // there is a difference, not where it is.
- if (isOnlyUsedInZeroEqualityComparison(CI) && TLI->has(LibFunc_bcmp)) {
+ // bcmp can be more efficient than memcmp because it only has to know that
+ // there is a difference, not how different one is to the other.
+ if (TLI->has(LibFunc_bcmp) && isOnlyUsedInZeroEqualityComparison(CI)) {
Value *LHS = CI->getArgOperand(0);
Value *RHS = CI->getArgOperand(1);
Value *Size = CI->getArgOperand(2);