[llvm] [AMDGPU][PromoteAlloca] Drop bitcast handling (PR #85747)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Pierre van Houtryve (Pierre-vh)

<details>
<summary>Changes</summary>

This is no longer needed with opaque pointers.

---
Full diff: https://github.com/llvm/llvm-project/pull/85747.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp (-8) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
index b1b15e9915aea3..e86132769f5788 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
@@ -724,14 +724,6 @@ bool AMDGPUPromoteAllocaImpl::tryPromoteAllocaToVector(AllocaInst &Alloca) {
       continue;
     }
 
-    if (isa<BitCastInst>(Inst)) {
-      // Look through bitcasts.
-      for (Use &U : Inst->uses())
-        Uses.push_back(&U);
-      UsersToRemove.push_back(Inst);
-      continue;
-    }
-
     if (auto *GEP = dyn_cast<GetElementPtrInst>(Inst)) {
       // If we can't compute a vector index from this GEP, then we can't
       // promote this alloca to vector.

``````````

</details>


https://github.com/llvm/llvm-project/pull/85747