[PATCH] D65267: [MachineCopyPropagation] Remove redundant copies after TailDup via machine-cp

[Kai Luo via Phabricator via llvm-commits]

lkail marked an inline comment as done.
lkail added inline comments.


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Comment at: llvm/test/CodeGen/MIR/PowerPC/machine-backward-cp.mir:165
     renamable $x6 = ADDI8 killed renamable $x4, 1
     renamable $x7 = COPY killed renamable $x6
     $x3 = ADD8 renamable killed $x5, renamable killed $x7
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Prior to the fix, `$x7` will be considered not clobbered and use of `$x5` in the next instruction will be replaced by `$x7` which MCP still considers `renamable $x5 = COPY killed renamable $x7` a valid copy.


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  https://reviews.llvm.org/D65267/new/

https://reviews.llvm.org/D65267