diff options
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp index 91fdda45ac7..1faaf0bf6af 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp @@ -1372,10 +1372,8 @@ Instruction *InstCombiner::visitSExt(SExtInst &CI) { // If we know that the value being extended is positive, we can use a zext // instead. KnownBits Known = computeKnownBits(Src, 0, &CI); - if (Known.isNonNegative()) { - Value *ZExt = Builder.CreateZExt(Src, DestTy); - return replaceInstUsesWith(CI, ZExt); - } + if (Known.isNonNegative()) + return CastInst::Create(Instruction::ZExt, Src, DestTy); // Try to extend the entire expression tree to the wide destination type. if (shouldChangeType(SrcTy, DestTy) && canEvaluateSExtd(Src, DestTy)) { |
