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

[Kai Luo via Phabricator via llvm-commits]

lkail updated this revision to Diff 220427.
lkail added a comment.

Updated the patch. Currently we don't handle non-trivial copy which has more than 2 operands(Cuz I notice current copy forward propagation algorithm considers copy's implicit operands).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D65267/new/

https://reviews.llvm.org/D65267

Files:
  llvm/lib/CodeGen/MachineCopyPropagation.cpp
  llvm/test/CodeGen/PowerPC/machine-backward-cp.mir
  llvm/test/CodeGen/PowerPC/redundant-copy-after-tail-dup.ll
  llvm/test/CodeGen/X86/mul-i512.ll
  llvm/test/CodeGen/X86/umulo-128-legalisation-lowering.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D65267.220427.patch
Type: text/x-patch
Size: 10313 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20190917/207ede1f/attachment-0001.bin>