[PATCH] D47690: [X86][BMI][TBM] Only demand bottom 16-bits of the BEXTR control op (PR34042)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon created this revision.
RKSimon added reviewers: craig.topper, spatel, lebedev.ri.

Only the bottom 16-bits of BEXTR's control op are required (0:8 INDEX, 15:8 LENGTH).


Repository:
  rL LLVM

https://reviews.llvm.org/D47690

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86InstrCompiler.td
  lib/Target/X86/X86InstrInfo.td
  lib/Target/X86/X86IntrinsicsInfo.h
  test/CodeGen/X86/bmi-x86_64.ll
  test/CodeGen/X86/bmi.ll

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