gcc/testsuite/gcc.target/i386/avx-reduc-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -mavx" } */
   3 /* { dg-require-effective-target avx_runtime } */
   4
   5 extern void abort (void);
   6 double ad[1024];
   7 float af[1024];
   8 short as[1024];
   9 int ai[1024];
  10 long long all[1024];
  11 unsigned short aus[1024];
  12 unsigned int au[1024];
  13 unsigned long long aull[1024];
  14
  15 #define F(var) \
  16 __attribute__((noinline, noclone)) __typeof (var[0]) \
  17 f##var (void) \
  18 { \
  19   int i; \
  20   __typeof (var[0]) r = 0; \
  21   for (i = 0; i < 1024; i++) \
  22     r = r > var[i] ? r : var[i]; \
  23   return r; \
  24 }
  25
  26 #define TESTS \
  27 F (ad) F (af) F (as) F (ai) F (all) F (aus) F (au) F (aull)
  28
  29 TESTS
  30
  31 int
  32 main ()
  33 {
  34   int i;
  35   for (i = 0; i < 1024; i++)
  36     {
  37 #undef F
  38 #define F(var) var[i] = i;
  39       TESTS
  40     }
  41   for (i = 1023; i < 32 * 1024; i += 1024 + 271)
  42     {
  43 #undef F
  44 #define F(var) var[i & 1023] = i; if (f##var () != i) abort ();
  45       TESTS
  46     }
  47   return 0;
  48 }