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

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
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This information is not preserved in MIR today. So this patch adds
information to RISCVMachineFunctionInfo when the vreg is created for
the argument.

Still needs more lit tests and more testing on real workloads. Posting
for sharing with others who might want to try this.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134621

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVMachineFunctionInfo.cpp
  llvm/lib/Target/RISCV/RISCVMachineFunctionInfo.h
  llvm/lib/Target/RISCV/RISCVSExtWRemoval.cpp
  llvm/test/CodeGen/RISCV/select-cc.ll

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