On Tue, Oct 11, 2016 at 09:39:10AM -0500, Aaron Sawdey wrote:
> Gcc 7 trunk was generating incorrect code for spec2k6 403.gcc due to
> this constraint issue. OK for trunk after bootstrap/regtest passes?
>
> 2016-10-06 Aaron Sawdey <acsaw...@linux.vnet.ibm.com>
>
> PR target/77934
> * config/rs6000/vmx.md (vsx_concat_<mode>): The mtvsrdd instruction
> needs a base register for arg 1.
>
>
> Index: gcc/config/rs6000/vsx.md
> ===================================================================
> --- gcc/config/rs6000/vsx.md (revision 240994)
> +++ gcc/config/rs6000/vsx.md (working copy)
> @@ -1938,7 +1938,7 @@
> (define_insn "vsx_concat_<mode>"
> [(set (match_operand:VSX_D 0 "gpc_reg_operand" "=<VSa>,we")
> (vec_concat:VSX_D
> - (match_operand:<VS_scalar> 1 "gpc_reg_operand" "<VS_64reg>,r")
> + (match_operand:<VS_scalar> 1 "gpc_reg_operand" "<VS_64reg>,b")
> (match_operand:<VS_scalar> 2 "gpc_reg_operand" "<VS_64reg>,r")))]
That does
else if (which_alternative == 1)
return (BYTES_BIG_ENDIAN
? "mtvsrdd %x0,%1,%2"
: "mtvsrdd %x0,%2,%1");
so you need the same for operand 2 as well? Okay with that change.
Thanks,
Segher
