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-rw-r--r--gcc/go/gofrontend/gogo.cc88
1 files changed, 1 insertions, 87 deletions
diff --git a/gcc/go/gofrontend/gogo.cc b/gcc/go/gofrontend/gogo.cc
index 363fd5cff18..6708be93cf7 100644
--- a/gcc/go/gofrontend/gogo.cc
+++ b/gcc/go/gofrontend/gogo.cc
@@ -42,9 +42,6 @@ Gogo::Gogo(Backend* backend, Linemap* linemap, int, int pointer_size)
pkgpath_(),
pkgpath_symbol_(),
prefix_(),
- zero_value_(NULL),
- zero_value_size_(0),
- zero_value_align_(0),
pkgpath_set_(false),
pkgpath_from_option_(false),
prefix_from_option_(false),
@@ -638,87 +635,6 @@ Gogo::current_bindings() const
return this->globals_;
}
-// Return the special variable used as the zero value of types.
-
-Named_object*
-Gogo::zero_value(Type *type)
-{
- if (this->zero_value_ == NULL)
- {
- Location bloc = Linemap::predeclared_location();
-
- // We will change the type later, when we know the size.
- Type* byte_type = this->lookup_global("byte")->type_value();
-
- Expression* zero = Expression::make_integer_ul(0, NULL, bloc);
- Type* array_type = Type::make_array_type(byte_type, zero);
-
- Variable* var = new Variable(array_type, NULL, true, false, false, bloc);
- this->zero_value_ = Named_object::make_variable("go$zerovalue", NULL,
- var);
- }
-
- // The zero value will be the maximum required size.
- int64_t size;
- bool ok = type->backend_type_size(this, &size);
- if (!ok) {
- go_assert(saw_errors());
- size = 4;
- }
- if (size > this->zero_value_size_)
- this->zero_value_size_ = size;
-
- int64_t align;
- ok = type->backend_type_align(this, &align);
- if (!ok) {
- go_assert(saw_errors());
- align = 4;
- }
- if (align > this->zero_value_align_)
- this->zero_value_align_ = align;
-
- return this->zero_value_;
-}
-
-// Return whether V is the zero value variable.
-
-bool
-Gogo::is_zero_value(Variable* v) const
-{
- return this->zero_value_ != NULL && this->zero_value_->var_value() == v;
-}
-
-// Return the backend variable for the special zero value, or NULL if
-// it is not needed.
-
-Bvariable*
-Gogo::backend_zero_value()
-{
- if (this->zero_value_ == NULL)
- return NULL;
-
- Type* byte_type = this->lookup_global("byte")->type_value();
- Btype* bbtype_type = byte_type->get_backend(this);
-
- Type* int_type = this->lookup_global("int")->type_value();
-
- Expression* e = Expression::make_integer_int64(this->zero_value_size_,
- int_type,
- Linemap::unknown_location());
- Translate_context context(this, NULL, NULL, NULL);
- Bexpression* blength = e->get_backend(&context);
-
- Btype* barray_type = this->backend()->array_type(bbtype_type, blength);
-
- std::string zname = this->zero_value_->name();
- Bvariable* zvar =
- this->backend()->implicit_variable(zname, barray_type, false,
- true, true, this->zero_value_align_);
- this->backend()->implicit_variable_set_init(zvar, zname, barray_type,
- false, true, true, NULL);
- return zvar;
-}
-
// Add statements to INIT_STMTS which run the initialization
// functions for imported packages. This is only used for the "main"
// package.
@@ -6534,9 +6450,7 @@ Variable::get_backend_variable(Gogo* gogo, Named_object* function,
Btype* btype = type->get_backend(gogo);
Bvariable* bvar;
- if (gogo->is_zero_value(this))
- bvar = gogo->backend_zero_value();
- else if (this->is_global_)
+ if (this->is_global_)
bvar = backend->global_variable((package == NULL
? gogo->package_name()
: package->package_name()),