[llvm] [LAA] Add stencil group merging to reduce runtime pointer checks (PR #187252)

[Igor Kirillov via llvm-commits]

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@@ -2109,7 +2198,8 @@ bool AccessAnalysis::createCheckForAccess(RuntimePointerChecking &RtCheck,
 
     bool IsWrite = Access.getInt();
     if (!RtCheck.insert(TheLoop, Ptr, PtrExpr, AccessTy, IsWrite, DepId, ASId,
-                        PSE, NeedsFreeze)) {
+                        PSE, NeedsFreeze,
+                        /*IsForked=*/RTCheckPtrs.size() == 2)) {
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igogo-x86 wrote:

The code in `createCheckForAccess` uses this comparison, but that's a weak argument I guess. I changed it.

https://github.com/llvm/llvm-project/pull/187252