diff options
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp index 3770021de10..394a55a1294 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp @@ -1965,9 +1965,10 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { Value *IIOperand = II->getArgOperand(0); Value *X = nullptr; + // TODO should this be in InstSimplify? // bswap(bswap(x)) -> x if (match(IIOperand, m_BSwap(m_Value(X)))) - return replaceInstUsesWith(CI, X); + return replaceInstUsesWith(CI, X); // bswap(trunc(bswap(x))) -> trunc(lshr(x, c)) if (match(IIOperand, m_Trunc(m_BSwap(m_Value(X))))) { @@ -1984,6 +1985,7 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) { Value *IIOperand = II->getArgOperand(0); Value *X = nullptr; + // TODO should this be in InstSimplify? // bitreverse(bitreverse(x)) -> x if (match(IIOperand, m_BitReverse(m_Value(X)))) return replaceInstUsesWith(CI, X); |
