https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109349
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Kito Cheng <k...@gcc.gnu.org>: https://gcc.gnu.org/g:7af0f1e107a480fbfe882cb985603960114aefb5 commit r14-9023-g7af0f1e107a480fbfe882cb985603960114aefb5 Author: Kito Cheng <kito.ch...@sifive.com> Date: Fri Jan 19 10:29:10 2024 +0800 RISC-V: Add new option -march=help to print all supported extensions The output of -march=help is like below: ``` All available -march extensions for RISC-V: Name Version i 2.0, 2.1 e 2.0 m 2.0 a 2.0, 2.1 f 2.0, 2.2 d 2.0, 2.2 ... ``` Also support -print-supported-extensions and --print-supported-extensions for clang compatibility. gcc/ChangeLog: PR target/109349 * common/config/riscv/riscv-common.cc (riscv_arch_help): New. * config/riscv/riscv-protos.h (RISCV_MAJOR_VERSION_BASE): New. (RISCV_MINOR_VERSION_BASE): Ditto. (RISCV_REVISION_VERSION_BASE): Ditto. * config/riscv/riscv-c.cc (riscv_ext_version_value): Use enum rather than magic number. * config/riscv/riscv.h (riscv_arch_help): New. (EXTRA_SPEC_FUNCTIONS): Add riscv_arch_help. (DRIVER_SELF_SPECS): Handle -march=help, -print-supported-extensions and --print-supported-extensions. * config/riscv/riscv.opt (march=help): New. (print-supported-extensions): New. (-print-supported-extensions): New. * doc/invoke.texi (RISC-V Options): Document -march=help. Reviewed-by: Christoph Müllner <christoph.muell...@vrull.eu>
