[PATCH] D68685: [RISCV] Scheduler description for Rocket Core

James Clarke via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Oct 18 06:25:41 PDT 2019


jrtc27 added a comment.

I wonder whether, instead of putting all the scheduling resource information as part of the instruction definition, we should be doing something like we do with patterns, ie declaring them separately (either in each RISCVInstrInfoX.td, or in RISCVSchedule.td to keep scheduling completely separate from encoding and codegen). For example (formatting aside):

  def : InstRW<[WriteFALU32], (instrs FADD_S, FSUB_S, FSGNJ_S, FSGNJN_S, FSGNJX_S, FMIN_S, FMAX_S)>;


Repository:
  rL LLVM

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  https://reviews.llvm.org/D68685/new/

https://reviews.llvm.org/D68685





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