[PATCH] D9645: [X86][SSE] Vectorized i64 uniform constant SRA shifts

[Simon Pilgrim]

RKSimon updated the summary for this revision.

Refreshed this patch now that the previous edge cases (sint_to_fp, and sext) have been dealt with properly.

I've updated the patch to work with Elena's 'SupporteVector' tests and moved the shift lowering code into LowerScalarImmediateShift directly.


Repository:
  rL LLVM

http://reviews.llvm.org/D9645

Files:
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86TargetTransformInfo.cpp
  test/Analysis/CostModel/X86/testshiftashr.ll
  test/CodeGen/X86/vector-shift-ashr-128.ll
  test/CodeGen/X86/vector-shift-ashr-256.ll
  test/CodeGen/X86/vshift-3.ll
  test/CodeGen/X86/widen_conv-2.ll

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