пт, 13 сент. 2024 г. в 20:41, Georg-Johann Lay <a...@gjlay.de>:
>
> The transparent call insns like "*parityhi2.libgcc" output a single
> [R]CALL instruction that can be skipped by the skip instructions.
> Such insns have attribute "type" of "xcall" and can therefore
> be easily recognized.
>
> Ok for trunk?
Please, apply.
Denis.
>
> Johann
>
> --
> AVR: Detect more skip opportunities.
>
> The transparent call insns like "*parityhi2.libgcc" output a single
> [R]CALL instruction that can be skipped by the skip instructions.
> Such insns have attribute "type" of "xcall" and can therefore
> be easily recognized. Same applies when "adjust_len" is "call".
>
> gcc/
> * config/avr/avr.cc (avr_2word_insn_p): Return true for
> transparent calls: When insn attribute "type" is "xcall"
> or when "adjust_len" is "call".
>
> diff --git a/gcc/config/avr/avr.cc b/gcc/config/avr/avr.cc
> index 48d1d0e7646..ef7e94dde2b 100644
> --- a/gcc/config/avr/avr.cc
> +++ b/gcc/config/avr/avr.cc
> @@ -12986,7 +12986,10 @@ avr_2word_insn_p (rtx_insn *insn)
> switch (INSN_CODE (insn))
> {
> default:
> - return false;
> + return (recog_memoized (insn) >= 0
> + // Transparent calls may be skipped.
> + && (get_attr_type (insn) == TYPE_XCALL
> + || get_attr_adjust_len (insn) == ADJUST_LEN_CALL));
>
> case CODE_FOR_movqi_insn:
> case CODE_FOR_movuqq_insn:
