Re: [PATCH 6/9] sel-sched: Don't mess with register restores

[Andrey Belevantsev]

Hello,

On 01.08.2016 4:42, Segher Boessenkool wrote:
> If selective scheduling copies register restores it confuses dwarf2cfi.
> 
> 2016-06-07  Segher Boessenkool  <seg...@kernel.crashing.org>
> 
>       * sel-sched-ir.c (init_global_and_expr_for_insn): Don't copy
>       instructions with a REG_CFA_RESTORE note.

OK from sel-sched POV.

Best,
Andrey

> ---
>  gcc/sel-sched-ir.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/gcc/sel-sched-ir.c b/gcc/sel-sched-ir.c
> index 83f813a..4a3984a 100644
> --- a/gcc/sel-sched-ir.c
> +++ b/gcc/sel-sched-ir.c
> @@ -3015,6 +3015,7 @@ init_global_and_expr_for_insn (insn_t insn)
>            /* TRAP_IF though have an INSN code is control_flow_insn_p ().  */
>            || control_flow_insn_p (insn)
>            || volatile_insn_p (PATTERN (insn))
> +       || find_reg_note (insn, REG_CFA_RESTORE, NULL)
>            || (targetm.cannot_copy_insn_p
>                && targetm.cannot_copy_insn_p (insn)))
>          force_unique_p = true;
>