[PATCH] D134621: [RISCV][WIP] Teach SExtWRemoval to recognize sign extended values that come from arguments.

[Alex Bradbury via Phabricator via llvm-commits]

asb added a comment.

Playing around with this on the GCC torture suite, I'm seeing a number of small codegen improvements, no miscompiles, and no instruction count regressions worth worrying about (pr67037 gets a few more instructions added than are removed, seems to just be due to slightly different BB structure due to different regalloc choices).


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D134621/new/

https://reviews.llvm.org/D134621