[PATCH] D11327: [X86][SSE] Keep 32-bit target i64 vector shifts on SSE unit.

[Simon Pilgrim]

RKSimon created this revision.
RKSimon added reviewers: qcolombet, delena, spatel, andreadb.
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This patch improves the 32-bit target i64 constant matching to detect the shuffle vector splats that are introduced by i64 vector shift vectorization (D8416).

Repository:
  rL LLVM

http://reviews.llvm.org/D11327

Files:
  lib/Target/X86/X86ISelLowering.cpp
  test/CodeGen/X86/vector-shift-lshr-128.ll
  test/CodeGen/X86/vector-shift-shl-128.ll

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