[PATCH] D82638: [MachineCopyPropagation] BackwardPropagatableCopy: add check for hasOverlappingMultipleDef

[Simon Wallis via Phabricator via llvm-commits]

simonwallis2 updated this revision to Diff 274407.
simonwallis2 added a comment.

If the definition is earlyclobber, will it ever reach hasOverlappingMultipleDef?

The getNumDefs() check is not necessary.
It has been removed.

The isDef() check is not necessary.
It has been removed.

I removed the fragile .ll testcase.
I have added an MIR testcase.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D82638/new/

https://reviews.llvm.org/D82638

Files:
  llvm/lib/CodeGen/MachineCopyPropagation.cpp
  llvm/test/CodeGen/ARM/mcp-dest-regs-no-dup.mir

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