[PATCH] D42834: [RISCV] Implement c.lui immedate operand constraint

[Shiva Chen via Phabricator via llvm-commits]

shiva0217 created this revision.
shiva0217 added reviewers: asb, apazos.
Herald added subscribers: niosHD, sabuasal, jordy.potman.lists, simoncook, johnrusso, rbar.

Implement c.lui immediate constraint to [1, 31] and [0xfffe0, 0xfffff] as RISCV GCC.
[0xfffe0, 0xfffff] eventually will encode as [32, 63] as ISA describe.
The benefit is that the transformation from lui to c.lui could check the immediate range of c.lui directly.


Repository:
  rL LLVM

https://reviews.llvm.org/D42834

Files:
  lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
  lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
  lib/Target/RISCV/InstPrinter/RISCVInstPrinter.cpp
  lib/Target/RISCV/InstPrinter/RISCVInstPrinter.h
  lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
  lib/Target/RISCV/RISCVInstrInfoC.td
  test/MC/RISCV/rv32c-invalid.s
  test/MC/RISCV/rv32c-valid.s

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