[PATCH] D152502: [MCP] Do not remove redundant copy for COPY from undef

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/test/CodeGen/X86/machine-copy-prop.mir:227
+# CHECK-NEXT: NOOP implicit $rax, implicit $rdi
+name: nocopyprop6
+body: |
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I think tracksRegLiveness strikes again (why is this an option?)


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152502/new/

https://reviews.llvm.org/D152502