[PATCH] D98860: [RISCV] Optimize all-constant mask BUILD_VECTORs

[Fraser Cormack via Phabricator via llvm-commits]

frasercrmck updated this revision to Diff 332329.
frasercrmck marked 2 inline comments as done.
frasercrmck added a comment.

- rebase
- fix shift overflow
- sign-extend constants from 32 to 64 to help materializatoin


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D98860/new/

https://reviews.llvm.org/D98860

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-mask-buildvec.ll

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