[llvm-branch-commits] [mlir] [MLIR][LLVM]: Add an IR utility to perform slice walking (PR #103053)

[Tobias Gysi via llvm-branch-commits]

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@@ -363,9 +323,14 @@ static void createNewAliasScopesFromNoAliasParameter(
 
       // Find the set of underlying pointers that this pointer is based on.
       SmallPtrSet<Value, 4> basedOnPointers;
-      for (Value pointer : pointerArgs)
-        llvm::copy(getUnderlyingObjectSet(pointer),
+      for (Value pointer : pointerArgs) {
+        FailureOr<SmallVector<Value>> underlyingObjectSet =
+            getUnderlyingObjectSet(pointer);
+        if (failed(underlyingObjectSet))
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gysit wrote:

Can you add a test case that exercise the failure case?

https://github.com/llvm/llvm-project/pull/103053
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