gcc/testsuite/gcc.target/i386/pr23376.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -mmmx -funroll-loops -fvariable-expansion-in-unroller" } */
   3
   4 typedef int __m64 __attribute__ ((__vector_size__ (8)));
   5 typedef int __v2si __attribute__ ((__vector_size__ (8)));
   6
   7 static __inline __m64 __attribute__((__always_inline__))
   8 _mm_add_pi32 (__m64 __m1, __m64 __m2)
   9 {
  10   return (__m64) __builtin_ia32_paddd ((__v2si)__m1, (__v2si)__m2);
  11 }
  12
  13 __m64
  14 simple_block_diff_up_mmx_4 (const int width, __m64 ref1)
  15 {
  16   __m64 sum;
  17   int count = width >>1;
  18   while (count--)
  19     sum = _mm_add_pi32 (sum, ref1);
  20   return sum;
  21 }