[llvm] [InstCombine] Remove nusw handling in ptrtoint of gep fold (NFCI) (PR #118804)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Nikita Popov (nikic)

<details>
<summary>Changes</summary>

Now that #<!-- -->111144 infers gep nuw, we no longer have to repeat the inference in this fold.

---
Full diff: https://github.com/llvm/llvm-project/pull/118804.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp (+1-4) 


``````````diff
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
index 7221c987b98219..d21714b10155d9 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
@@ -2106,10 +2106,7 @@ Instruction *InstCombinerImpl::visitPtrToInt(PtrToIntInst &CI) {
         Base->getType() == Ty) {
       Value *Offset = EmitGEPOffset(GEP);
       auto *NewOp = BinaryOperator::CreateAdd(Base, Offset);
-      if (GEP->hasNoUnsignedWrap() ||
-          (GEP->hasNoUnsignedSignedWrap() &&
-           isKnownNonNegative(Offset, SQ.getWithInstruction(&CI))))
-        NewOp->setHasNoUnsignedWrap(true);
+      NewOp->setHasNoUnsignedWrap(GEP->hasNoUnsignedWrap());
       return NewOp;
     }
   }

``````````

</details>


https://github.com/llvm/llvm-project/pull/118804