gcc/testsuite/g++.dg/tree-ssa/ssa-sra-2.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 void link_error();
   5
   6 struct OOf {
   7         int value;
   8         OOf() {value = 0;}
   9 };
  10 inline OOf operator+(OOf op1, OOf op2)
  11 {
  12         OOf f;
  13         f.value = op1.value + op2.value;
  14         return f;
  15 }
  16 inline OOf operator*(OOf op1, OOf op2)
  17 {
  18         OOf f;
  19         f.value = op1.value * op2.value;
  20         return f;
  21 }
  22 inline OOf operator-(OOf op1, OOf op2)
  23 {
  24         OOf f;
  25         f.value = op1.value - op2.value;
  26         return f;
  27 }
  28 inline OOf test_func(
  29         OOf a,
  30         OOf b,
  31         OOf c
  32 )
  33 {
  34         OOf d, e;
  35         OOf result;
  36         d = a * b + b * c;
  37         e = a * c - b * d;
  38         result = d * e;
  39         return result;
  40 }
  41
  42 void test()
  43 {
  44   OOf a, b, c;
  45   OOf d = test_func (a,b,c);
  46   if (d.value)
  47     link_error();
  48 }
  49
  50 /* We should have removed the casts from pointers to references and caused SRA to happen.  */
  51 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
  52 /* { dg-final { cleanup-tree-dump "optimized" } } */