[PATCH] D133739: [RISCV][WIP] Form more VW instructions

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

TL;DR Stay tuned, tentative patch is on its way.

Quick update here. I have a patch that does an all or nothing approach for the folding (i.e., if at least one operation cannot fold, don't do it.)
I'll post it hopefully next week.
There are two parts to it:

1. A refactoring of how the folding is done, so that all the decisions are made by the same function for all binop (add/sub, mul, addw/subw) (This part is the meat of the whole exercise.)
2. A relatively small patch that leverage this function to take the decision for a set of instructions connected by s|zext.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D133739/new/

https://reviews.llvm.org/D133739