[PATCH] CodeGenPrepare: Avoid and/or i1 in select conditions.

[Matthias Braun]

ping

> On Feb 5, 2015, at 4:05 PM, Matthias Braun <matze at braunis.de> wrote:
> 
> New Version: This expects the middleend to have selects normalized to selects with and/or conditions (see http://reviews.llvm.org/D7450). The Code to break it into a sequence of multiple selects is now in the CodeGenPrepare pass and relies on a TargetLowering hook to test whether the transformation is useful.
> 
> 
> REPOSITORY
>  rL LLVM
> 
> http://reviews.llvm.org/D7399
> 
> Files:
>  include/llvm/Target/TargetLowering.h
>  lib/CodeGen/CodeGenPrepare.cpp
>  lib/Target/PowerPC/PPCISelLowering.h
>  test/CodeGen/R600/or.ll
>  test/CodeGen/X86/jump_sign.ll
>  test/CodeGen/X86/zext-sext.ll
>  test/Transforms/CodeGenPrepare/select_and_or.ll
> 
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