Use backend interface for return statements.

	* go-gcc.cc: #include "tree-iterator.h", "gimple.h", and "gogo.h".
	(class Bfunction): Define.
	(Gcc_backend::assignment_statement): Rename from assignment.
	Check for errors.
	(Gcc_backend::return_statement): New function.
	(tree_to_function): New function.
	* Make-lang.in (go/go-gcc.o): Depend on tree-iterator.h,
	$(GIMPLE_H), and $(GO_GOGO_H).

From-SVN: r171959

1 files changed, 12 insertions, 1 deletions

diff --git a/gcc/go/gofrontend/backend.h b/gcc/go/gofrontend/backend.h
index babef83..959fc78 100644
--- a/gcc/go/gofrontend/backend.h
+++ b/gcc/go/gofrontend/backend.h
@@ -24,6 +24,9 @@ class Bexpression;
 // The backend representation of a statement.
 class Bstatement;
 
+// The backend representation of a function definition.
+class Bfunction;
+
 // A list of backend types.
 typedef std::vector<Btype*> Btypes;
 
@@ -103,7 +106,14 @@ class Backend
 
   // Create an assignment statement.
   virtual Bstatement*
-  assignment(Bexpression* lhs, Bexpression* rhs, source_location location) = 0;
+  assignment_statement(Bexpression* lhs, Bexpression* rhs,
+		       source_location) = 0;
+
+  // Create a return statement, passing the representation of the
+  // function and the list of values to return.
+  virtual Bstatement*
+  return_statement(Bfunction*, const std::vector<Bexpression*>&,
+		   source_location) = 0;
 };
 
 // The backend interface has to define this function.
@@ -114,6 +124,7 @@ extern Backend* go_get_backend();
 // interface.
 
 extern Bexpression* tree_to_expr(tree);
+extern Bfunction* tree_to_function(tree);
 extern tree statement_to_tree(Bstatement*);
 
 #endif // !defined(GO_BACKEND_H)