diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp index acb62b6ad9e..910ec835c5a 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp @@ -1697,6 +1697,9 @@ Instruction *InstCombiner::visitSub(BinaryOperator &I) { return SelectInst::Create(Cmp, Neg, A); } + if (Instruction *Ext = narrowMathIfNoOverflow(I)) + return Ext; + bool Changed = false; if (!I.hasNoSignedWrap() && willNotOverflowSignedSub(Op0, Op1, I)) { Changed = true; |
