[llvm] [NFC][AMDGPU] Fix redundant assignment from #77952 (PR #84586)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Krzysztof Drewniak (krzysz00)

<details>
<summary>Changes</summary>

Someone pointed out a typo (Value* RsrcRes = RsrcRes = ...) in PR the address space 7 lowering, this commit fixes it.

---
Full diff: https://github.com/llvm/llvm-project/pull/84586.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp b/llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp
index 34fcb9aec38fa4..544231cad28016 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPULowerBufferFatPointers.cpp
@@ -1671,7 +1671,7 @@ PtrParts SplitPtrStructs::visitSelectInst(SelectInst &SI) {
   auto [TrueRsrc, TrueOff] = getPtrParts(True);
   auto [FalseRsrc, FalseOff] = getPtrParts(False);
 
-  Value *RsrcRes = RsrcRes =
+  Value *RsrcRes =
       IRB.CreateSelect(Cond, TrueRsrc, FalseRsrc, SI.getName() + ".rsrc", &SI);
   copyMetadata(RsrcRes, &SI);
   Conditionals.push_back(&SI);

``````````

</details>


https://github.com/llvm/llvm-project/pull/84586