[PATCH] D11503: [INSTCOMBINE][X86][SSE] Replace sign/zero extension intrinsics with native IR

[Simon Pilgrim]

RKSimon updated this revision to Diff 30636.
RKSimon added a comment.

Updated based on Sanjay's feedback


Repository:
  rL LLVM

http://reviews.llvm.org/D11503

Files:
  lib/Transforms/InstCombine/InstCombineCalls.cpp
  test/Transforms/InstCombine/vec_demanded_elts.ll
  test/Transforms/InstCombine/x86-pmovsx.ll
  test/Transforms/InstCombine/x86-pmovzx.ll

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