[PATCH] D49585: [ARM] Prefer lsls+lsrs over lsls+ands or lsrs+ands in Thumb1.

[Eli Friedman via Phabricator via llvm-commits]

efriedma updated this revision to Diff 156611.
efriedma edited the summary of this revision.
efriedma added a comment.

Changed to DAGCombine, added some more tests for related patterns, added some FIXMEs for future improvements.


Repository:
  rL LLVM

https://reviews.llvm.org/D49585

Files:
  lib/Target/ARM/ARMISelLowering.cpp
  test/CodeGen/Thumb/shift-and.ll

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