[PATCH] D118843: [x86] avoid false dependency stall on 'sbb' with same source reg

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/Target/X86/X86.td:448
 
+def TuningSBBZeroIdiom : SubtargetFeature<"sbb-zero-idiom",
+                                     "HasSBBZeroIdiom", "true",
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I'm not sure about the use of the word "zero" in this. I liked TuningSBBDepBreaking


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D118843/new/

https://reviews.llvm.org/D118843