[PATCH] D130483: [RISCV] Add CodeGen support of RISCV Zca Extension

[Xinlong Wu via Phabricator via llvm-commits]

VincentWu created this revision.
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This patch add the support of RISCV Zca ext

`Zca` is a subset of C extension instructions that are compatible with the Zc extension.

So this patch implements Zca code generation with reference to the C extension and sets the 2-byte alignment for the Zca extension, just like C extension does.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130483

Files:
  llvm/lib/Object/ELFObjectFile.cpp
  llvm/lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
  llvm/lib/Target/RISCV/MCTargetDesc/RISCVMCObjectFileInfo.cpp
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoC.td
  llvm/lib/Target/RISCV/RISCVSubtarget.h
  llvm/test/CodeGen/RISCV/attributes.ll
  llvm/test/MC/RISCV/rv32zca-aliases-valid.s
  llvm/test/MC/RISCV/rv64zca-aliases-valid.s

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