On Fri, 14 Aug 2026 at 11:15:33 +0200, John Paul Adrian Glaubitz wrote:
On Fri, 2026-08-14 at 10:59 +0200, Bastien Roucaries wrote:
It is not a baseline raise in this case, it is do not use FPU by default
Is there a source where I can read more on this proposal?
When Bastien refers to "do not use FPU by default" here, I think that
could be more precisely stated as "do not use the i387 FPU instructions
for arithmetic by default". In other words, the current default on i386
is -mfpmath=387 -march=i686, and the proposal is to change that to
either -mfpmath=sse -march=x86-64 or -mfpmath=sse -march=pentium4.
This is consistent with the Debian 13 release notes having already said
that legacy 32-bit binaries on x86_64 hardware are the only remaining
supported use-case for the i386 port:
https://www.debian.org/releases/trixie/release-notes/issues.en.html#reduced-support-for-i386
The actual proposal:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1127352
smcv
