gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-26.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dse1-details -fno-short-enums" } */
   3
   4 enum constraint_expr_type
   5 {
   6   SCALAR, DEREF, ADDRESSOF
   7 };
   8 typedef struct constraint_expr
   9 {
  10   enum constraint_expr_type type;
  11   unsigned int var;
  12   long offset;
  13 } constraint_expr ;
  14 typedef struct constraint
  15 {
  16   struct constraint_expr lhs;
  17   struct constraint_expr rhs;
  18 } constraint;
  19 static _Bool
  20 constraint_expr_equal (struct constraint_expr x, struct constraint_expr y)
  21 {
  22   return x.type == y.type && x.var == y.var && x.offset == y.offset;
  23 }
  24
  25 _Bool
  26 constraint_equal (struct constraint a, struct constraint b)
  27 {
  28   return constraint_expr_equal (a.lhs, b.lhs)
  29     && constraint_expr_equal (a.rhs, b.rhs);
  30 }
  31
  32 /* { dg-final { scan-tree-dump-times "Deleted dead store: x = " 1 "dse1" } } */
  33 /* { dg-final { scan-tree-dump-times "Deleted dead store: y = " 1 "dse1" } } */
  34