gcc/testsuite/gcc.dg/ipa/ipa-icf-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-ipa-icf"  } */
   3
   4 #include <stdio.h>
   5
   6 struct container
   7 {
   8   int x;
   9   int y;
  10 };
  11
  12 static struct container max;
  13 static int array[3][3];
  14 static int array2[123];
  15
  16 __attribute__ ((noinline))
  17 void foo(void)
  18 {
  19   printf("Foo()");
  20 }
  21
  22 __attribute__ ((noinline))
  23 int order(int x, int y)
  24 {
  25   return x < y ? 2 : 4;
  26 }
  27
  28 __attribute__ ((noinline))
  29 int order2(int y, int x)
  30 {
  31   return x < y ? 2 : 4;
  32 }
  33
  34 __attribute__ ((noinline))
  35 void x1(int x)
  36 {
  37   int i;
  38   for(i = 0; i < 20; ++i)
  39     array2[i] = i;
  40
  41   array2[2] = 13;
  42 }
  43
  44 __attribute__ ((noinline))
  45 void x2(int a)
  46 {
  47   int i;
  48   for(i = 0; i < 20; ++i)
  49     array2[i] = i;
  50
  51   array2[2] = 13;
  52 }
  53
  54 int main(int argc, char **argv)
  55 {
  56   return 0;
  57 }
  58
  59 /* { dg-final { scan-ipa-dump "Semantic equality hit:x1->x2" "icf"  } } */
  60 /* { dg-final { scan-ipa-dump "Equal symbols: 1" "icf"  } } */