Viewing file:  ssa-dse-26.c (1.02 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-dse1-details -fno-short-enums -fno-tree-fre" } */
/* { dg-skip-if "we want a BIT_FIELD_REF from fold_truth_andor" { ! lp64 } } */
/* { dg-skip-if "temporary variable names are not x and y" { mmix-knuth-mmixware } } */
enum constraint_expr_type
{
SCALAR, DEREF, ADDRESSOF
};
typedef struct constraint_expr
{
enum constraint_expr_type type;
unsigned int var;
long offset;
} constraint_expr ;
typedef struct constraint
{
struct constraint_expr lhs;
struct constraint_expr rhs;
} constraint;
static _Bool
constraint_expr_equal (struct constraint_expr x, struct constraint_expr y)
{
return x.type == y.type && x.var == y.var && x.offset == y.offset;
}
_Bool
constraint_equal (struct constraint a, struct constraint b)
{
return constraint_expr_equal (a.lhs, b.lhs)
&& constraint_expr_equal (a.rhs, b.rhs);
}
/* { dg-final { scan-tree-dump-times "Deleted dead store: x = " 1 "dse1" } } */
/* { dg-final { scan-tree-dump-times "Deleted dead store: y = " 1 "dse1" } } */
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