gcc/testsuite/gcc.target/i386/pr38931.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -msse" } */
   3
   4 typedef int __m64 __attribute__ ((__vector_size__ (8)));
   5
   6 extern __m64 foo () ;
   7
   8 void bar (const int input_bpl, const unsigned char *input,
   9           unsigned char *output, unsigned long x1)
  10 {
  11   unsigned char *pix_end_ptr = output + x1 * 4;
  12   __m64 m_original = { 0, 0 };
  13   __m64 m_base_addr = __builtin_ia32_vec_init_v2si (0, input_bpl);
  14   __m64 m_addr = __builtin_ia32_paddd (m_original, m_base_addr);
  15   __m64 *a0 = (__m64 *) input;
  16
  17   for (; output < pix_end_ptr; output += 4)
  18     {
  19       a0 = (__m64 *) (input + __builtin_ia32_vec_ext_v2si (m_addr, 0));
  20       m_addr = foo ();
  21       __builtin_prefetch (a0, 0);
  22     }
  23 }