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

[Matthias Braun]

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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