gcc/testsuite/gcc.dg/pr64277.c

   1 /* PR tree-optimization/64277 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O3 -Wall -Werror -fdump-tree-cunroll-details" } */
   4 /* { dg-final { scan-tree-dump "loop with 4 iterations completely unrolled" "cunroll" } } */
   5 /* { dg-final { scan-tree-dump "loop with 5 iterations completely unrolled" "cunroll" } } */
   6
   7 #if __SIZEOF_INT__ < 4
   8   __extension__ typedef __INT32_TYPE__ int32_t;
   9 #else
  10   typedef int int32_t;
  11 #endif
  12
  13 int32_t f1[10];
  14 void test1 (short a[], short m, unsigned short l)
  15 {
  16   int32_t i = l;
  17   for (i = i + 5; i < m; i++)
  18     f1[i] = a[i]++;
  19 }
  20
  21 void test2 (short a[], short m, short l)
  22 {
  23   int32_t i;
  24   if (m > 5)
  25     m = 5;
  26   for (i = m; i > l; i--)
  27     f1[i] = a[i]++;
  28 }