[PATCH] D48877: [X86][BtVer2][MCA] Recognize CMPEQ one-idioms

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 153936.
lebedev.ri retitled this revision from "[X86][BtVer2][MCA] Recognize CMPEQ zero-idioms too" to "[X86][BtVer2][MCA] Recognize CMPEQ one-idioms".
lebedev.ri edited the summary of this revision.
lebedev.ri added a comment.

Hmm, so if they still consume resources, does this mean it is the lack of latency is what making them special?

FIXME: how do i test a custom snippet in llvm-exegesis? CC @courbet

  $ perl -e 'print "pcmpgtb %xmm5,%xmm5\n"x10000; print "retq"' > /tmp/snippet-ones,txt


Repository:
  rL LLVM

https://reviews.llvm.org/D48877

Files:
  lib/Target/X86/X86ScheduleBtVer2.td
  test/tools/llvm-mca/X86/BtVer2/one-idioms.s

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