[PATCH] D40334: [X86] Break false dependencies for POPCNT, LZCNT, TZCNT

[Marina Yatsina via Phabricator via llvm-commits]

myatsina updated this revision to Diff 124847.
myatsina added a comment.

Added subtarget features.
Adding the rr versions of the instructions to hasPartialRegUpdate affected folding of memory operands for these instructions (if an instruction has partial reg update, then it folds only if optimizing for size) - Made a small adjustment  the test to recreate the problematic scenario after this change.


https://reviews.llvm.org/D40334

Files:
  lib/Target/X86/X86.td
  lib/Target/X86/X86InstrInfo.cpp
  lib/Target/X86/X86Subtarget.cpp
  lib/Target/X86/X86Subtarget.h
  test/CodeGen/X86/bug3389.ll

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