gcc/testsuite/gcc.dg/tree-ssa/ifc-pr44710.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-c -O2 -ftree-vectorize" { target *-*-* } } */
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6
   7 #define N 64
   8 float arr[N];
   9
  10 __attribute__ ((noinline))
  11 int foo (unsigned int n, float *min)
  12 {
  13   unsigned int pos = 1;
  14   unsigned int i;
  15   float limit = N+N;
  16
  17   for (i = 0; i < N; i++)
  18     if (arr[i] < limit)
  19       {
  20         pos = i + 1;
  21         limit = arr[i];
  22       }
  23
  24   *min = limit;
  25   return pos;
  26 }
  27
  28 int main (void)
  29 {
  30   int i, pos;
  31   float min;
  32
  33   for (i = 0; i < N; i++)
  34    arr[i] = (float)(i);
  35
  36   arr[2] = -5.8;
  37
  38   pos = foo (N, &min);
  39   if (pos != 3 || min != arr[2])
  40     abort ();
  41
  42   return 0;
  43 }
  44