compiler: Use backend interface for type sizes and alignments.

[pf3gnuchains/gcc-fork.git] / gcc / go / gofrontend / backend.h

diff --git a/gcc/go/gofrontend/backend.h b/gcc/go/gofrontend/backend.h
index 382f5a1..9777acc 100644 (file)
--- a/gcc/go/gofrontend/backend.h
+++ b/gcc/go/gofrontend/backend.h
@@ -198,6 +198,25 @@ class Backend
   virtual bool
   is_circular_pointer_type(Btype*) = 0;
 
+  // Return the size of a type.
+  virtual size_t
+  type_size(Btype*) = 0;
+
+  // Return the alignment of a type.
+  virtual size_t
+  type_alignment(Btype*) = 0;
+
+  // Return the alignment of a struct field of this type.  This is
+  // normally the same as type_alignment, but not always.
+  virtual size_t
+  type_field_alignment(Btype*) = 0;
+
+  // Return the offset of field INDEX in a struct type.  INDEX is the
+  // entry in the FIELDS std::vector parameter of struct_type or
+  // set_placeholder_struct_type.
+  virtual size_t
+  type_field_offset(Btype*, size_t index) = 0;
+
   // Expressions.
 
   // Return an expression for a zero value of the given type.  This is