[Bug c/126244] [RISC-V] wrong-code: dead vsetvli writes VLMAX into a0, clobbering memset destination argument at -O3 with RVV

[rdapp at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126244

--- Comment #3 from Robin Dapp <rdapp at gcc dot gnu.org> ---
(In reply to Christian Herber from comment #2)
> I tried, but could not. This bug is rather sensible, and smaller changes
> make it disappear. I will try to get a gcc 16 up and running and retry with
> that.

Yeah, that's unfortunately common with this class of bugs.  What's the smallest
source version you have (short of compiling the whole project)?  We might still
be able to iterate from there.