[PATCH] D18741: [X86][SSE] Support for MOVMSK signbit extraction instructions

[Simon Pilgrim via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: delena, andreadb, spatel.
RKSimon added a subscriber: llvm-commits.
RKSimon set the repository for this revision to rL LLVM.

Add support for lowering with the MOVMSK instruction to extract vector element signbits to a GPR.

This is an early step towards more optimal handling of vector comparison results.

Repository:
  rL LLVM

http://reviews.llvm.org/D18741

Files:
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  lib/Target/X86/X86InstrFragmentsSIMD.td
  lib/Target/X86/X86InstrSSE.td
  lib/Target/X86/X86IntrinsicsInfo.h

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