[PATCH] D25221: [PPC][DAGCombine] Convert SETCC to subtract when the result is zero extended

Wed Oct 26 14:15:33 PDT 2016

amehsan updated this revision to Diff 75949.
amehsan added a comment.

There is one comment not yet addressed. Size of latest legal integer is currently hardcoded. As I responded to that comment I will fix it. I want to look at this a bit more to see if it makes sense to add some extensions to it.

I have added more comments, so hopefully the code will be more clear.

https://reviews.llvm.org/D25221

Files:
  lib/Target/PowerPC/PPCISelLowering.cpp
  lib/Target/PowerPC/PPCISelLowering.h
  test/CodeGen/PowerPC/setcc-to-sub.ll

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