There's new support in decodetree for pattern groups. I believe that patch 5, or something close to it, was posted as an RFC as part of the original pattern group patch set, but this cleans that up further.
r~ Richard Henderson (8): target/riscv: Name the argument sets for all of insn32 formats target/riscv: Use --static-decode for decodetree target/riscv: Merge argument sets for insn32 and insn16 target/riscv: Merge argument decode for RVC shifti target/riscv: Use pattern groups in insn16.decode target/riscv: Split RVC32 and RVC64 insns into separate files target/riscv: Split gen_arith_imm into functional and temp target/riscv: Remove spaces from register names target/riscv/cpu.c | 16 +- target/riscv/insn_trans/trans_rvc.inc.c | 347 ------------------------ target/riscv/insn_trans/trans_rvi.inc.c | 20 +- target/riscv/translate.c | 40 ++- target/riscv/Makefile.objs | 15 +- target/riscv/insn16-32.decode | 28 ++ target/riscv/insn16-64.decode | 30 ++ target/riscv/insn16.decode | 154 ++++++----- target/riscv/insn32.decode | 10 +- 9 files changed, 205 insertions(+), 455 deletions(-) delete mode 100644 target/riscv/insn_trans/trans_rvc.inc.c create mode 100644 target/riscv/insn16-32.decode create mode 100644 target/riscv/insn16-64.decode -- 2.17.1
