[PATCH] D109154: [GlobalISel] Improve elimination of dead instructions in legalizer

[Amara Emerson via Phabricator via llvm-commits]

aemerson added inline comments.


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Comment at: llvm/lib/CodeGen/GlobalISel/Legalizer.cpp:187
+  DeadInstChain.remove(&MI);
+  WrapperObserver.erasingInstr(MI);
+  MI.eraseFromParentAndMarkDBGValuesForRemoval();
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Is this observer call necessary? I thought deletions were automatically handled?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D109154/new/

https://reviews.llvm.org/D109154