[Bug target/36837] New: Return type of spu_splats is not deduced correctly

["jadamcze at utas dot edu dot au" <gcc-bugzilla at gcc dot gnu dot org>]

For the following fragment :

#include <spu_intrinsics.h>
vector unsigned int f() {
        return spu_splats( (unsigned int)7 );
}


Compiling with spu-elf-gcc is fine.  Compiling with spu-elf-g++ generates an
error:

$ usr/bin/spu-elf-g++ -c splat.cpp
splat.cpp: In function 'unsigned int __vector__ f()':
splat.cpp:3: note: use -flax-vector-conversions to permit conversions between
vectors with differing element types or numbers of subparts
splat.cpp:3: error: cannot convert 'unsigned char __vector__' to 'unsigned int
__vector__' in return


Replacing spu_splats with __builtin_spu_splats_4 allows the fragment to be
compiled correctly.



Observed with r137813.  

Compiles as expected in :
gcc version 4.4.0 20080404 (experimental)
gcc version 4.3.0 20071012 (experimental)
gcc version 4.1.1 (IBM SDK 3.0 release)


-- 
           Summary: Return type of spu_splats is not deduced correctly
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jadamcze at utas dot edu dot au
GCC target triplet: spu-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36837