[PATCH] D76890: [GlobalISel] Fix equality for copies from physregs in matchEqualDefs

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

No test with the implicit def case you mentioned?



================
Comment at: llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp:1528
+  //
+  // FIXME: We can probably do better here by checking register liveness.
+  if (any_of(I1->uses(), [](const MachineOperand &MO) {
----------------
ISel should probably not ever think about liveness like this


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  https://reviews.llvm.org/D76890/new/

https://reviews.llvm.org/D76890