https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121208
--- Comment #21 from CHARLES GOEDEFROIT <charles.goedefroit at eviden dot com> --- Thanks for your replies. I tried with -mtls-dialect=gnu2, and everything works as expected. To preserve the x87 FPU registers (MMX, YMM, ZMM, and MXCSR), I use the XSAVEC64/XRSTOR64 instructions when saving is needed. This saving can be in the interrupt handler (ui_handler) or in a separate function with specific conditions (e.g. only when a specific code needs to be executed). To save and restore these registers, it would be interesting to have attributes similar to target(general-regs-only). For example, an attribute named "preserve-all-fpu-regs" to save all x87 FPU registers at the beginning of a function and restore them at the end. Another attribute can be named "preserve-some-fpu-regs" to save only the registers used in an inline or static function? Is this possible?
