1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -ftree-vectorize -ffast-math" } */
       3  
       4  #include <stdint.h>
       5  
       6  void consumer (void *);
       7  
       8  #define TEST_LOOP(TYPE, VAL)			\
       9    void						\
      10    multi_loop_##TYPE (TYPE *x, int n)		\
      11    {						\
      12      for (int k = 0; k < 4; ++k)			\
      13        {						\
      14  	for (int j = 0; j < n; ++j)		\
      15  	  {					\
      16  	    for (int i = 0; i < 100; ++i)	\
      17  	      x[i] += VAL + i;			\
      18  	    asm volatile ("");			\
      19  	  }					\
      20  	for (int j = 0; j < n; ++j)		\
      21  	  consumer (x);				\
      22  	for (int j = 0; j < n; ++j)		\
      23  	  {					\
      24  	    for (int i = 0; i < 100; ++i)	\
      25  	      x[i] += VAL + i;			\
      26  	    asm volatile ("");			\
      27  	  }					\
      28  	consumer (x);				\
      29  	for (int i = 0; i < 100; ++i)		\
      30  	  x[i] += VAL + i;			\
      31  	consumer (x);				\
      32        }						\
      33    }
      34  
      35  TEST_LOOP (uint8_t, 3);
      36  TEST_LOOP (uint16_t, 4);
      37  TEST_LOOP (uint32_t, 5);
      38  TEST_LOOP (uint64_t, 6);
      39  TEST_LOOP (float, 2.5f);
      40  TEST_LOOP (double, 3.5);
      41  
      42  /* { dg-final { scan-assembler-times {\tindex\tz[0-9]+\..,} 18 } } */
      43  /* { dg-final { scan-assembler-not {\tldr\tz[0-9]} } } */
      44  /* { dg-final { scan-assembler-not {\tstr\tz[0-9]} } } */
      45  /* { dg-final { scan-assembler-not {\tldr\tp[0-9]} } } */
      46  /* { dg-final { scan-assembler-not {\tstr\tp[0-9]} } } */