On 2026-10-09 7:42 a.m., Jeremie Courreges-Anglas wrote:
On Thu, Oct 08, 2026 at 12:40:13AM +0200, Jeremie Courreges-Anglas wrote:
On Fri, Sep 25, 2026 at 08:39:11PM -0400, Brad Smith wrote:
[...]
-# Don't assume risc-v Vector support
-CONFIGURE_ARGS+= -DHWY_CMAKE_RVV=OFF
This has to stay, we don't want to assume that the vector feature is
available.
... so I have kept these lines in what I have just committed.
Yes, you're right about this part. I looked into why this exists and its a
workaround for two (older) compiler bugs. With Clang (older than 20) the
Vector header used to only expose Vector builtins if the option
-march=rv64gcv1p0 was used which was removed. With GCC (older
than 15.2) there was an issue with Vector builtins and an interaction
with LTO which resulted in them being disabled unless -march=rv64gcv1p0
was used as a workaround.
I'll see about possibly getting this removed now that the root issues
have been fixed.
I had another diff that was more complete.
Actually I was confused, I had local patches to enable runtime
detection through elf_aux_info(3) and I had not noticed your latest
patches committed by Landry in July.
