[Bug target/109349] riscv: Add --print-supported-extensions

[kito at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109349

Kito Cheng <kito at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |kito at gcc dot gnu.org

--- Comment #4 from Kito Cheng <kito at gcc dot gnu.org> ---
MaskRay:

I would prefer to adding -march=help rather than --print-supported-extensions
on GNU toolchain side, that should be satisfy the conventions in GCC and also
having consistent with clang, although I am personally prefer -march=? rather
than -march=help, but I know clang has rename -mcpu=? -mtune=? to -mcpu=help
and -mtune=help, anyway that's minor.

BTW, 4vtomat is our(SiFive) team member, so actually we've plan to add that on
GNU toolchain side but because it's stage 4 for GCC so I still hold there :P


Andrew Pinski:

Yeah, I plan to make up document stuffs and release notes at April...