On Thu, Jan 31, 2013 at 05:31:12PM +0100, Richard Biener wrote:
> 2013-01-31 Richard Biener <rguent...@suse.de>
>
> PR tree-optimization/
> * tree-vect-slp.c (vect_get_slp_defs): More thoroughly try to
> match up operand with SLP child.
>
> * gcc.dg/torture/pr56157.c: New testcase.
Ok, thanks.
> *** gcc/testsuite/gcc.dg/torture/pr56157.c (revision 0)
> --- gcc/testsuite/gcc.dg/torture/pr56157.c (working copy)
I'd perhaps remove some more cruft from the testcase,
/* { dg-do compile } */
/* { dg-options "-ftree-vectorize" } */
struct Pixel { unsigned short r, g, b, a; };
void
fn (unsigned char * __restrict dst, const unsigned char * __restrict src)
{
unsigned x;
for (x = 0; x < 1024; x++)
{
struct Pixel pixel;
pixel.r = src[0] * 0xffffU / 0xff;
pixel.g = src[1] * 0xffffU / 0xff;
pixel.b = src[2] * 0xffffU / 0xff;
pixel.a = src[3] * 0xffffU / 0xff;
__builtin_memcpy (dst, &pixel, sizeof pixel);
src += 4;
dst += 8;
}
}
is less obfuscated and still does the same thing, but your call.
Jakub
