]>
gcc.gnu.org Git - gcc.git/commit
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.muellner@vrull.eu>
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