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[InstCombine] Add a TODO for a probable missing single use check. NFC 

Will try to fix it soon, but in case I forget.

llvm-svn: 307003
This commit is contained in:
Craig Topper 2017-07-03 05:54:16 +00:00
parent 766ce6e9cf
commit 8036970008
1 changed files with 2 additions and 0 deletions
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llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
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@ -82,6 +82,8 @@ static Value *getFCmpValue(unsigned Code, Value *LHS, Value *RHS,
Value *InstCombiner::SimplifyBSwap(BinaryOperator &I) { Value *InstCombiner::SimplifyBSwap(BinaryOperator &I) {
assert(I.isBitwiseLogicOp() && "Unexpected opcode for bswap simplifying"); assert(I.isBitwiseLogicOp() && "Unexpected opcode for bswap simplifying");
// TODO We should probably check for single use of the bswap.
Value *NewLHS; Value *NewLHS;
if (!match(I.getOperand(0), m_BSwap(m_Value(NewLHS)))) if (!match(I.getOperand(0), m_BSwap(m_Value(NewLHS))))
return nullptr; return nullptr;