[PATCH] D155095: TargetLowering: fix an infinite DAG combine in SimplifySETCC

[Jon Roelofs via Phabricator via llvm-commits]

jroelofs added inline comments.


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Comment at: llvm/test/CodeGen/AArch64/arm64-setcc-swap-infloop.ll:25
+; CHECK-NEXT:    ret
+  call void @llvm.memset.p0.i64(ptr nonnull null, i8 1, i64 32, i1 false)
+  %v = getelementptr inbounds i8, ptr null, i64 16
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The bug is really sensitive to the UB here. Removing any of the UB on these first 3 lines makes the bug go away.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155095/new/

https://reviews.llvm.org/D155095