[PATCH] D31319: [PPC] Eliminate redundant sign- and zero-extensions in PPC MI Peephole pass

[Eric Christopher via llvm-commits]

It's usually easier to review two smaller incremental patches than a single
larger one if you wouldn't mind splitting it back up.

On Mon, Mar 27, 2017, 11:33 PM Hiroshi Inoue via Phabricator <
reviews at reviews.llvm.org> wrote:

> inouehrs updated this revision to Diff 93212.
> inouehrs added a comment.
>
> - I added more code patterns in which we can eliminate sign- or
> zero-extensions.
> - I added more test cases in the regression test.
>
>
> https://reviews.llvm.org/D31319
>
> Files:
>   lib/Target/PowerPC/PPCISelLowering.cpp
>   lib/Target/PowerPC/PPCInstrInfo.cpp
>   lib/Target/PowerPC/PPCInstrInfo.h
>   lib/Target/PowerPC/PPCMIPeephole.cpp
>   lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
>   lib/Target/PowerPC/PPCMachineFunctionInfo.h
>   test/CodeGen/PowerPC/eliminate_ext.ll
>
>
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