[PATCH] D52348: [X86][BMI1]: X86DAGToDAGISel: select BEXTR from x & ((1 << nbits) + (-1)) pattern

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added reviewers: RKSimon, craig.topper, spatel.
lebedev.ri added a dependency: D52304: [X86][BMI1]: X86DAGToDAGISel: select BEXTR from  x & ~(-1 << nbits)  pattern.

Trivial continuation of https://reviews.llvm.org/D52304.
While this pattern is not canonical, we do select it in the BZHI case,
so this should not be any different.


Repository:
  rL LLVM

https://reviews.llvm.org/D52348

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp
  test/CodeGen/X86/extract-bits.ll
  test/CodeGen/X86/extract-lowbits.ll

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