[PATCH] D131141: [RISCV] Add MC support of RISCV Zcb Extension

[Kito Cheng via Phabricator via llvm-commits]

kito-cheng added inline comments.


================
Comment at: llvm/lib/Target/RISCV/RISCVInstrInfoZc.td:108
+
+def C_MUL     : RVZcArith_rr<0b100111, 0b10, 0b01, "c.mul">, Sched<[]>;
+
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craig.topper wrote:
> Does this require M or Zmmul or does Zcb imply M/Zmmul?
Krste say m require zmmul here:

https://github.com/riscv/riscv-isa-manual/issues/869#issuecomment-1186043486


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  https://reviews.llvm.org/D131141/new/

https://reviews.llvm.org/D131141