[PATCH] D69987: [RISCV] Assemble/Disassemble v-ext instructions.

Evandro Menezes via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Thu Jun 25 08:34:27 PDT 2020


evandro added inline comments.


================
Comment at: llvm/lib/Target/RISCV/RISCVInstrFormats.td:56
+def NoConstraint : RISCVVConstraint<0>;
+def WidenV       : RISCVVConstraint<1>;
+def WidenW       : RISCVVConstraint<2>;
----------------
HsiangKai wrote:
> evandro wrote:
> > HsiangKai wrote:
> > > evandro wrote:
> > > > Methinks that these constraints `WidenV`, `WidenW`, `WidenCvt`, should be split up by their components.  IOW, into `Widen`, `Wide` (input), `Cvt`.  This way, it's easier to test for specific constraints.
> > > Do you mean
> > > 
> > > WidenV = Widen;
> > > WidenW = Widen | WideInput;
> > > WidenCvt = Widen | Cvt;
> > Yes.
> Got it. I will improve it based on v0.9 implementation.
Please, address this comment before committing.


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https://reviews.llvm.org/D69987





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