gcc/testsuite/g++.dg/tree-ssa/sra-1.C

   1 /* https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=223576 */
   2
   3 /* SRA failed to canonicalize bit-field types, introducing type
   4    mismatches.  */
   5
   6 /* { dg-do compile } */
   7 /* { dg-options "-O2" } */
   8
   9 struct A
  10 {
  11   int a:16;
  12   /* These dummy bit-fields are here to prevent GCC 4.2+ from merging
  13      the bit-field compares into a single word compare, which disables
  14      SRA.  */
  15   int a2:16;
  16   int a3:16;
  17   int a4:16;
  18   int b:8;
  19   bool operator==(A const x) const
  20   {
  21     return (this->a == x.a && this->b == x.b);
  22   }
  23 };
  24
  25 bool
  26 foo (A const x, A const y)
  27 {
  28   return x == y;
  29 }