[PATCH] D45537: [CodeGenPrepare] Move Extension Instructions Through Logical And Shift Instructions

[Guozhi Wei via Phabricator via llvm-commits]

Carrot created this revision.

CodeGenPrepare pass move extension instructions close to load instructions in different BB, so they can be combined later. But the extension instructions can't move through logical and shift instructions in current implementation. This patch enables this enhancement, so we can eliminate more extension instructions.


Repository:
  rL LLVM

https://reviews.llvm.org/D45537

Files:
  lib/CodeGen/CodeGenPrepare.cpp
  test/CodeGen/X86/cmov.ll
  test/CodeGen/X86/pr35765.ll
  test/Transforms/CodeGenPrepare/X86/ext-logicop.ll

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