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[InstCombine] Swap order of checks to improve compile time (NFC) 

llvm-svn: 366962
This commit is contained in:
Evandro Menezes 2019-07-24 23:31:04 +00:00
parent 904494944b
commit 5cd5f9b65d
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
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@ -939,9 +939,9 @@ Value *LibCallSimplifier::optimizeMemCmp(CallInst *CI, IRBuilder<> &B) {
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);