gcc/testsuite/gcc.dg/ipa/ipa-pta-19.c

   1 /* { dg-do run } */
   2 /* { dg-require-ifunc "" } */
   3 /* { dg-options "-O2 -fipa-pta" } */
   4
   5 #include <stdlib.h>
   6 #include <stdbool.h>
   7
   8 #define hot __attribute__((hot))
   9
  10 static hot void multiver_default(unsigned int in, bool *ret)
  11 {
  12         if ( in & 1 ) {
  13                 *ret = false;
  14         }else{
  15                 *ret = true;
  16         }
  17 }
  18
  19 static void (*resolve_multiver(void))(unsigned int in, bool *out)
  20 {
  21         return &multiver_default;
  22 }
  23
  24 __attribute__ ((ifunc("resolve_multiver")))
  25 static void multiver_test(unsigned int val, bool *ret);
  26
  27 static hot bool do_test(unsigned int val)
  28 {
  29         bool ret = false;
  30
  31         multiver_test(val, &ret);
  32
  33         return (ret == !(val & 0x1));
  34 }
  35
  36 volatile unsigned int x = 2;
  37 int main()
  38 {
  39   int i;
  40   for(i = 1; i < x; i++) {
  41       unsigned int val = x;
  42       if ( !do_test(val) )
  43         abort ();
  44   }
  45   return 0;
  46 }