[llvm] [GVN] Reject PartialAlias in canSkipClobberingStore (PR #193465)
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Wed Apr 22 13:53:21 PDT 2026
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Analysis/MemoryDependenceAnalysis.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
index 5b9697d73..256b9269b 100644
--- a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -360,7 +360,8 @@ static bool canSkipClobberingStore(const StoreInst *SI,
// partial overlap. In that case the store modifies only part of MemLoc,
// so the loaded value may change even though the stored value was originally
// read from a MustAlias location.
- if (BatchAA.alias(MemoryLocation::get(SI), MemLoc) == AliasResult::PartialAlias)
+ if (BatchAA.alias(MemoryLocation::get(SI), MemLoc) ==
+ AliasResult::PartialAlias)
return false;
auto *LI = dyn_cast<LoadInst>(SI->getValueOperand());
``````````
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https://github.com/llvm/llvm-project/pull/193465
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