[PATCH] D44608: [x86] put nops into the WriteNop class and make latency = 0 for Jaguar

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sun Mar 18 08:34:58 PDT 2018


RKSimon added a comment.

x87 fnop as well?



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Comment at: test/CodeGen/X86/schedule-x86_64.ll:8398
+; BTVER2-NEXT:    nopq %rdx # sched: [0:?]
+; BTVER2-NEXT:    nopq (%r9) # sched: [0:?]
 ; BTVER2-NEXT:    #NO_APP
----------------
According to the 16h SOG tables, these should be [1:0.5] on the ALU pipes


https://reviews.llvm.org/D44608





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