[Bug optimization/13540] [3.4 regression] gnat1 segmentation fault

[jh at suse dot cz]

------- Additional Comments From jh at suse dot cz  2004-01-02 11:28 -------
Subject: Re:  [3.4 regression] gnat1 segmentation fault

> 
> ------- Additional Comments From danglin at gcc dot gnu dot org  2004-01-02 02:50 -------
> This is the patch that introduced the regression:
> 
> 2004-01-01  Jan Hubicka  <jh@suse.cz>
> 
>         * expmed.c (store_bit_field, extract_bit_field): Use new named patterns
>         * expr.c (store_constructor): Use vec_init pattern.
>         * genopinit.c (optabs): Initailize vec_set/vec_extract/vec_init.
>         * optabs.h (optab_index): ADD OTI_vec_set/OTI_vec_extract/OTI_vec_init
>         (vec_set_optab, vec_extract_optab, vec_init_optab): New.
>         * i386.md (vec_setv2df, vec_extractv2df, vec_setv4sf, vec_extractv4sf):
>         New patterns.
>         (sse2_unpc?pd): Fix pattern.
>         (sse2_movlpd): Kill.
>         (sse2_movsd): Deal with movlpd too.
>         * i386.c (ix86_expand_builtin): Use sse2_movsd instead of sse2_movlpd.
>         (ix86_expand_vector_init): New.
>         * emmintrin.h (__mm_set_pd, __mm_set_ps): Use vector extensions.
>         * md.texi (vec_set, vec_extract): Document
> 
> This hunk of the patch seems suspect:
> 
> @@ -4958,12 +4994,17 @@
>                   target = copy_rtx (target);
>                   MEM_KEEP_ALIAS_SET_P (target) = 1;
>                 }
> -
> -             store_constructor_field (target, bitsize, bitpos, mode, value,
> -                                      type, cleared, get_alias_set (elttype));
> -
> +             else
> +               store_constructor_field (target, bitsize, bitpos, mode, value,
> +                                        type, cleared, get_alias_set (elttype));

This is a leftout of earlier version of patch.  I am undoing this
change.  Thanks!
Honza
>             }
>         }
> +      if (vector)
> +       {
> +         emit_insn (GEN_FCN (icode) (target,
> +                                     gen_rtx_PARALLEL (GET_MODE (target),
> +                                                       gen_rtvec_v (n_elts, 
> vector))));
> +       }
>      }
>  
>    /* Set constructor assignments.  */
> 
> The failure also affects hppa2.0-hp-hpux11.00.
> 
> 
> 
> 
> 
> -- 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |jh at suse dot cz
> 
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13540
> 
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13540