gcc/testsuite/gcc.dg/ipa/remref-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fno-early-inlining -fdump-ipa-cp-details -fdump-tree-optimized"  }  */
   3
   4 static double global = 0.0;
   5 double foo_temp5;
   6
   7 static void foo(double *ptr) {
   8   static double abcd;
   9   double v, exp_res;
  10   v = *ptr;
  11   exp_res = __builtin_exp(v);
  12   foo_temp5 = exp_res * abcd;
  13   abcd += foo_temp5;
  14 }
  15
  16 double last_value;
  17
  18 static void bar(double *ptr)
  19 {
  20   last_value = *ptr;
  21   for (unsigned i = 0; i < 200; i++)
  22     foo (ptr);
  23 }
  24
  25 void entry()
  26 {
  27   bar (&global);
  28 }
  29
  30 void decoy(double *ptr)
  31 {
  32   bar (ptr);
  33 }
  34
  35
  36 /* { dg-final { scan-ipa-dump "Removed a reference"  "cp"  } } */
  37 /* { dg-final { scan-ipa-dump "replaced it with LOAD"  "cp"  } } */
  38 /* { dg-final { scan-tree-dump-times "builtin_exp" 1 "optimized"  } } */