[llvm] [NFC][SPIRV] GetElementPtrInst does not need a call to isInstructionTriviallyDead after replaceUsesofWith (PR #162045)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-spir-v

Author: Juan Manuel Martinez Caamaño (jmmartinez)

<details>
<summary>Changes</summary>

A getelementptr is always removable after replacing all its uses, since it doesn't have side effects and always returns.

---
Full diff: https://github.com/llvm/llvm-project/pull/162045.diff


1 Files Affected:

- (modified) llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp (+1-3) 


``````````diff
diff --git a/llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp b/llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp
index 9f2e07508a36a..e16c8f0fc302e 100644
--- a/llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp
@@ -2811,9 +2811,7 @@ bool SPIRVEmitIntrinsics::runOnFunction(Function &Func) {
     GetElementPtrInst *NewGEP = simplifyZeroLengthArrayGepInst(Ref);
     if (NewGEP) {
       Ref->replaceAllUsesWith(NewGEP);
-      if (isInstructionTriviallyDead(Ref))
-        DeadInsts.insert(Ref);
-
+      DeadInsts.insert(Ref);
       Ref = NewGEP;
     }
     if (Type *GepTy = getGEPType(Ref))

``````````

</details>


https://github.com/llvm/llvm-project/pull/162045