On Wed, 18 May 2005 14:17:59 -0700, Richard Henderson wrote
> On Thu, May 19, 2005 at 04:58:32AM +0800, Ling-hua Tseng wrote:
> > I got 4 lines "SI".
> > (In the ARM's iWMMXt V8QI testing, I got the message: "V8QI")
>
> Then you need to debug your targetm.vector_mode_supported_p.
>
> Starting around stor-layout.c line 1609:
>
> for (; mode != VOIDmode ; mode = GET_MODE_WIDER_MODE
> (mode)) if (GET_MODE_NUNITS (mode) == nunits
> && GET_MODE_INNER (mode) == innermode &&
> targetm.vector_mode_supported_p (mode)) break;
>
> /* For integers, try mapping it to a same-sized scalar
> mode. */ if (mode == VOIDmode &&
> GET_MODE_CLASS (innermode) == MODE_INT) mode =
> mode_for_size (nunits * GET_MODE_BITSIZE (innermode),
> MODE_INT, 0);
>
> The compiler has passed through the first loop without finding
> a supported vector mode that matches nunits=4 && inner=QImode.
>
> r~
The targetm.vector_mode_supported_p is pointed to the genernal
hook "hook_bool_mode_false".
But I have already put the following lines in my <target>.c:
===================================[top]====================================
...
#include "target-def.h"
...
static bool unicore_vector_mode_supported_p(enum machine_mode mode);
...
struct gcc_target targetm = TARGET_INITIALIZER;
...
#undef TARGET_VECTOR_MODE_SUPPORTED_P
#define TARGET_VECTOR_MODE_SUPPORTED_P unicore_vector_mode_supported_p
...
static bool unicore_vector_mode_supported_p(enum machine_mode mode)
{
switch(mode) {
case V4QImode:
case V2HImode:
return true;
default:
return false;
}
}
...
===================================[end]====================================
Doesn't it enough to let the targetm.vector_mode_supported_p to be pointed to
my unicore_vector_mode_supported_p() ?
