[Bug target/43175] __builtin_ia32_vec_perm_v4si doesn't work with AVX

[hjl dot tools at gmail dot com]

------- Comment #8 from hjl dot tools at gmail dot com  2010-02-25 19:25 -------
(In reply to comment #6)
> A blind guess:
> 
> Index: i386.c
> ===================================================================
> --- i386.c      (revision 157069)
> +++ i386.c      (working copy)
> @@ -29144,8 +29144,8 @@ expand_vec_perm_blend (struct expand_vec
>      do_subreg:
>        vmode = V8HImode;
>        target = gen_lowpart (vmode, target);
> -      op0 = gen_lowpart (vmode, target);
> -      op1 = gen_lowpart (vmode, target);
> +      op0 = gen_lowpart (vmode, op0);
> +      op1 = gen_lowpart (vmode, op1);
>        break;
> 
>      default:
> 
> H.J., can you please try this patch?
> 

Doesn't work:

(gdb) p b
$1 = {s = {0, 5, 6, 7}, v = 0x600920}
(gdb) p c
$2 = {s = {4, 1, 2, 3}, v = 0x600930}
(gdb) 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43175