[PATCH] D129948: [RISCV] Fold stack reload into sext.w by using lw instead of ld.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
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We can use lw to load 4 bytes from the stack and sign extend them
instead of loading all 8 bytes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129948

Files:
  llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfo.h
  llvm/test/CodeGen/RISCV/stack-folding.ll

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