> * config/i386/i386.c (ix86_emit_restore_reg_using_pop): Prototype.
> (ix86_adjust_stack_and_probe_stack_clash): Use a push/pop sequence
> to probe at the start of a noreturn function.
>
> * gcc.target/i386/stack-check-12.c: New test
- emit_stack_probe (plus_constant (Pmode, stack_pointer_rtx,
- -GET_MODE_SIZE (word_mode)));
+ rtx_insn *insn = emit_insn (gen_push (gen_rtx_REG (word_mode, 0)));
Please use AX_REG instead of 0.
+ RTX_FRAME_RELATED_P (insn) = 1;
+ ix86_emit_restore_reg_using_pop (gen_rtx_REG (word_mode, 0));
Also here.
emit_insn (gen_blockage ());
BTW: Could we use an unused register here, if available? %eax is used
to pass first argument in regparm functions on 32bit targets.
Uros.
