On Fri, May 6, 2022 at 3:36 AM Takayuki 'January June' Suwa via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > On Espressif's ESP8266 (based on Tensilica LX106, no hardware divider), > this patch reduces the size of each: > > __moddi3() @ libgcc.a : 969 -> 301 (saves 668) > __divmoddi4() : 1111 -> 426 (saves 685) > __udivmoddi4() : 1043 -> 319 (saves 724) > > in bytes, respectively. > > gcc/ChangeLog: > > * config/xtensa/xtensa.h (TARGET_HAS_NO_HW_DIVIDE): New macro > definition. > --- > gcc/config/xtensa/xtensa.h | 5 +++++ > 1 file changed, 5 insertions(+)
Regtested for target=xtensa-linux-uclibc, there's new regression in gcc.c-torture/execute/20101011-1.c related to division by 0 implemented as an invalid opcode exception that the kernel should convert to division by 0 signal, but does not. It should be fixed in the kernel. Committed to master. -- Thanks. -- Max
