[PATCH] D49611: [X86] Improved sched models for X86 SHLD/SHRD* instructions
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 30 06:15:58 PDT 2018
RKSimon added inline comments.
================
Comment at: lib/Target/X86/X86Schedule.td:148
defm WriteShift : X86SchedWritePair;
-// Double shift instructions.
-defm WriteShiftDouble : X86SchedWritePair;
+def WriteSHDrri : SchedWrite;
+def WriteSHDrrcl : SchedWrite;
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avt77 wrote:
> RKSimon wrote:
> > Keep the // Double shift instructions. comment here
> But I removed
>
> defm WriteShiftDouble : X86SchedWritePair;
>
> Why do we need the comments?
Aren't WriteSHD double shift instructions ?
https://reviews.llvm.org/D49611
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