[PATCH] D39899: [X86] Add CBW/CDQ/CDQE/CQO/CWD/CWDE to WriteALU schedule class

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.

Some CPUs are already overriding these sign extension instructions but we should be able to use the WriteALU schedule class by default.


Repository:
  rL LLVM

https://reviews.llvm.org/D39899

Files:
  lib/Target/X86/X86InstrExtension.td
  test/CodeGen/X86/schedule-x86_64.ll

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