gcc/testsuite/gcc.dg/ipa/ipa-icf-7.c

   1 /* { dg-do compile { target c99_runtime } } */
   2 /* { dg-options "-O2 -fdump-ipa-icf"  } */
   3 /* { dg-add-options c99_runtime } */
   4
   5 #include <complex.h>
   6
   7 #if (__SIZEOF_INT__ == __SIZEOF_FLOAT__)
   8 typedef int intflt;
   9 #elif (__SIZEOF_LONG__ == __SIZEOF_FLOAT__)
  10 typedef long intflt;
  11 #else
  12 #error Add target support here for type that will union float size
  13 #endif
  14
  15
  16 static double test;
  17
  18 struct struktura
  19 {
  20   union
  21   {
  22     long i;
  23     float f;
  24   } u;
  25 };
  26
  27 struct struktura sss;
  28
  29 struct X
  30 {
  31   int i;
  32   union
  33   {
  34     intflt j;
  35     intflt k;
  36     float f;
  37   } u;
  38 };
  39
  40 __attribute__ ((noinline))
  41 intflt foo(intflt j)
  42 {
  43   struct X a;
  44
  45   a.u.j = j;
  46   a.u.f = a.u.f;
  47   a.u.f = a.u.f;
  48   a.u.j = a.u.j;
  49   a.u.f = a.u.f;
  50   return a.u.k;
  51 }
  52
  53 __attribute__ ((noinline))
  54 intflt foo2(intflt j)
  55 {
  56   struct X a;
  57
  58   a.u.j = j;
  59   a.u.f = a.u.f;
  60   a.u.f = a.u.f;
  61   a.u.j = a.u.j;
  62   a.u.f = a.u.f;
  63   return a.u.k;
  64 }
  65
  66 int main()
  67 {
  68   return 1;
  69 }
  70
  71 /* { dg-final { scan-ipa-dump "Semantic equality hit:foo->foo2" "icf"  } } */
  72 /* { dg-final { scan-ipa-dump "Equal symbols: 1" "icf"  } } */