[llvm] [SROA] Conservatively do not split the alloca if ptr is laundered (PR #107557)

[Nikita Popov via llvm-commits]

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@@ -3522,6 +3522,10 @@ class AllocaSliceRewriter : public InstVisitor<AllocaSliceRewriter, bool> {
            "Unexpected intrinsic!");
     LLVM_DEBUG(dbgs() << "    original: " << II << "\n");
 
+    // Do not record invariant group intrinsics for deletion.
+    if (II.isLaunderOrStripInvariantGroup())
+      return true;
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nikic wrote:

Hm, shouldn't we be creating a new intrinsic for the split pointer instead?

https://github.com/llvm/llvm-project/pull/107557