[all-commits] [llvm/llvm-project] c2df71: [RISCV] Merge some of the C_*_HINT instruction int...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c2df717aa95f75a6bd143c202b95dc880350535b
      https://github.com/llvm/llvm-project/commit/c2df717aa95f75a6bd143c202b95dc880350535b
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-07-25 (Fri, 25 Jul 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
    M llvm/lib/Target/RISCV/RISCVAsmPrinter.cpp
    M llvm/lib/Target/RISCV/RISCVInstrInfoC.td
    M llvm/lib/Target/RISCV/RISCVRegisterInfo.td
    M llvm/test/MC/RISCV/rv32c-invalid.s
    M llvm/test/MC/RISCV/rve-invalid.s

  Log Message:
  -----------
  [RISCV] Merge some of the C_*_HINT instruction into the regular C_* instructions. (#150710)

Register classes and immediate predicates in a CompressPat no longer
need to match the compressed instruction. We can now merge most of the
C_*_HINT instructions into their non-HINT equivalents.

I've left c.slli64/srli64/srai6 out to avoid conflict with #150689.
C_NOP_HINT is left out because the spec refers to C_NOP as a separate
instruction from C_ADDI. C_NOP does not allow an immediate operand but
C_NOP_HINT does.



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