llvm-gcc-4.2/gcc/testsuite/gcc.target/i386/sse-99.c

/* APPLE LOCAL file performance sse 4043818 */
/* { dg-do compile } */
/* APPLE LOCAL x86_64 */
/* { dg-require-effective-target ilp32 } */
/* APPLE LOCAL begin radar 4875125 */
/* { dg-options "-O3 -msse -mtune=generic" } */
/* APPLE LOCAL end radar 4875125 */
/* LLVM LOCAL disable test for optimizing MMX */
/* { DISABLE { scan-assembler-times "movq" 4 } } */

/* PR target/23630 */
/* PR middle-end/23517 */
/* Radar 4043818 */

typedef int __m64 __attribute__ ((__vector_size__ (8)));

static __inline __m64 __attribute__((__always_inline__))
_mm_add_si64 (__m64 __m1, __m64 __m2)
{
  return (__m64) __builtin_ia32_paddq (__m1, __m2);
}

__m64 unsigned_add3( const __m64 *a, const __m64 *b, __m64 *result, unsigned long count )
{
  __m64 sum, _a, _b;
  unsigned int i;

  _a = a[0];
  _b = b[0];

  sum = _mm_add_si64( _a, _b );
  for( i = 1; i < count; i++ )
  {
   result[i-1] = sum;
   _a = a[i];
   _b = b[i];
   sum = _mm_add_si64( _a, _b );
  }
  return sum;
}