> This removes adding very expensive DF problems which we do not
> use and which somehow cause 5GB of memory to leak.
Impressive :)
>
> Bootstrap & regtest running on x86_64-unknown-linux-gnu.
>
> 2021-01-29 Richard Biener <rguent...@suse.de>
>
> PR rtl-optimization/98863
> * config/i386/i386-features.c (remove_partial_avx_dependency):
> Do not add DF chain and MD problems.
OK (if regtests passes :)
Honza
> ---
> gcc/config/i386/i386-features.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/gcc/config/i386/i386-features.c b/gcc/config/i386/i386-features.c
> index ef4f9406102..52c51a32e14 100644
> --- a/gcc/config/i386/i386-features.c
> +++ b/gcc/config/i386/i386-features.c
> @@ -2295,8 +2295,6 @@ remove_partial_avx_dependency (void)
> {
> calculate_dominance_info (CDI_DOMINATORS);
> df_set_flags (DF_DEFER_INSN_RESCAN);
> - df_chain_add_problem (DF_DU_CHAIN | DF_UD_CHAIN);
> - df_md_add_problem ();
> df_analyze ();
> v4sf_const0 = gen_reg_rtx (V4SFmode);
> }
> --
> 2.26.2
