[llvm] [AMDGPU] Update PromoteAlloca to handle GEPs with variable offset. (PR #122342)

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git-clang-format --diff 3019e49ebfc5d710191712b6d437c56c01e65b87 bf8a22d0596b9e7392a98f953877f8bc29d93b9b --extensions cpp -- llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
index 643dc8d6e3..28016b5936 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp
@@ -394,9 +394,9 @@ static Value *calculateVectorIndex(
   auto I = GEPIdx.find(GEP);
   assert(I != GEPIdx.end() && "Must have entry for GEP!");
 
-    Value *IndexValue = I->second;
-    assert(IndexValue && "index value missing from GEP index map");
-    return IndexValue;
+  Value *IndexValue = I->second;
+  assert(IndexValue && "index value missing from GEP index map");
+  return IndexValue;
 }
 
 static Value *GEPToVectorIndex(GetElementPtrInst *GEP, AllocaInst *Alloca,

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https://github.com/llvm/llvm-project/pull/122342