Hello,
On Sun, 30 Jul 2023, Thomas Koenig wrote:
> > I've recently submitted a patch that adds some attributes that basically
> > say "these-and-those regs aren't clobbered by this function" (I did them
> > for not clobbered xmm8-15). Something similar could be used for the new
> > GPRs as
Am 27.07.23 um 15:43 schrieb Michael Matz:
I've recently submitted a patch that adds some attributes that basically
say "these-and-those regs aren't clobbered by this function" (I did them
for not clobbered xmm8-15). Something similar could be used for the new
GPRs as well. Then it would be a
Hey,
On Thu, 27 Jul 2023, Thomas Koenig via Gcc wrote:
> Intel recommends to have the new registers as caller-saved for
> compatibility with current calling conventions. If I understand this
> correctly, this is required for exception unwinding, but not if the
> function called is
* Thomas Koenig via Gcc:
> Intel recommends to have the new registers as caller-saved for
> compatibility with current calling conventions. If I understand this
> correctly, this is required for exception unwinding, but not if the
> function called is __attribute__((nothrow)).
Nothrow functions
With the upcoming Intel APX extension, Intel processors will
finally gain 32 general-purpose registers and three-operand
arithmetic, see
https://www.intel.com/content/www/us/en/developer/articles/technical/advanced-performance-extensions-apx.html
Intel recommends to have the new registers as
