Jakub Jelinek via Gcc-patches <gcc-patches@gcc.gnu.org> writes: > On Mon, Sep 14, 2020 at 08:57:18AM -0700, H.J. Lu via Gcc-patches wrote: >> Something like this for GCC 8 and 9. > > Guess my preference would be to do this everywhere and then let's discuss if > we change the warning into error there or keep it being deprecated.
Agreed FWIW. On turning it into an error: I think it might be better to wait a bit longer if we can. Richard > > Though, let's see what others want to say about this. > >> Add sp_is_clobbered_by_asm to rtl_data to inform backends that the stack >> pointer is clobbered by asm statement. >> >> gcc/ >> >> PR target/97032 >> * cfgexpand.c (asm_clobber_reg_kind): Set sp_is_clobbered_by_asm >> to true if the stack pointer is clobbered by asm statement. >> * emit-rtl.h (rtl_data): Add sp_is_clobbered_by_asm. >> * config/i386/i386.c (ix86_get_drap_rtx): Set need_drap to true >> if the stack pointer is clobbered by asm statement. >> >> gcc/testsuite/ >> >> PR target/97032 >> * gcc.target/i386/pr97032.c: New test. > > Jakub
