gcc/testsuite/gcc.dg/ipa/ipa-icf-8.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-ipa-icf"  } */
   3
   4 #include <stdio.h>
   5
   6 __attribute__ ((noinline))
   7 int fce1(int a, int b)
   8 {
   9   int swap;
  10
  11   if(a < b)
  12     {
  13       swap = a;
  14       a = b;
  15       b = swap;
  16     }
  17
  18   return a / b;
  19 }
  20
  21 __attribute__ ((noinline))
  22 int fce2(int x, int y)
  23 {
  24   int tmp;
  25
  26   if(x < y)
  27     {
  28       tmp = x;
  29       x = y;
  30       y = tmp;
  31     }
  32
  33   return x / y;
  34 }
  35
  36
  37 int main(int argc, char **argv)
  38 {
  39   printf("fce1: %d\n", fce1(argc, argc + 2));
  40   printf("fce2: %d\n", fce2(argc, 2 * argc));
  41 }
  42
  43 /* { dg-final { scan-ipa-dump "Semantic equality hit:fce2->fce1" "icf"  } } */
  44 /* { dg-final { scan-ipa-dump "Equal symbols: 1" "icf"  } } */
  45 /* { dg-final { cleanup-ipa-dump "icf" } } */