[Bug target/123125] [RISCV] lto1: sorry, unimplemented: Currently the ‘V’ implementation requires the ‘M’ extension

[vhaudiquet343 at hotmail dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123125

--- Comment #4 from Valentin Haudiquet <vhaudiquet343 at hotmail dot fr> ---
Ah, right, thanks. Then maybe this can be classified as 'wontfix' / 'not a
bug'.

Still, that warning is very weird to see. I was trying to debug another issue I
had during a compilation, which failed because 'lto1' thought that my target
was not supporting a specific feature. When I tried to call lto1 directly, I
saw this error message. 

I didn't think about reporting the issue I had, because it was using
experimental patches to gcc; but seeing that the error message on 'lto1'
complained about a missing extension, I thought those might have been related.

On x86, calling lto1 directly does not show any error/warning; so I thought
there might be a bug on riscv.

If this is not a real issue, feel free to close :)