gcc/testsuite/gcc.target/powerpc/pr103515.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-rtl-loop2_unroll-optimized" } */
   3
   4 /* The pragma specified for foo2 should not affect foo1.
   5    Verify compiler won't perform unrolling for foo1.  */
   6
   7 #define N 1024
   8 extern int a1[N], b1[N], c1[N];
   9 extern int a2[N], b2[N], c2[N];
  10 extern int n;
  11
  12 void
  13 foo1 ()
  14 {
  15   int i;
  16   for (i = 0; i < n; i++)
  17     c1[i] += a1[i] + b1[i];
  18 }
  19
  20 #pragma GCC optimize("O3,unroll-loops")
  21 void
  22 foo2 ()
  23 {
  24   int i;
  25   for (i = 0; i < n; i++)
  26     c2[i] += a2[i] + b2[i];
  27 }
  28
  29 /* { dg-final { scan-rtl-dump-times "optimized: loop unrolled" 1 "loop2_unroll" } } */
  30