Move top-level AST to HIR conversion to _mesa_ast_to_hir

ast.h

@@ -492,6 +492,9 @@ public:
 };
 
 
+extern void
+_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state);
+
 extern struct ir_instruction *
 _mesa_ast_field_selection_to_hir(const struct ast_expression *expr,
 				 exec_list *instructions,

ast_to_hir.cpp

@@ -56,6 +56,17 @@
 #include "glsl_types.h"
 #include "ir.h"
 
+void
+_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state)
+{
+   struct simple_node *ptr;
+
+   foreach (ptr, & state->translation_unit) {
+      ((ast_node *)ptr)->hir(instructions, state);
+   }
+}
+
+
 static const struct glsl_type *
 arithmetic_result_type(const struct glsl_type *type_a,
 		       const struct glsl_type *type_b,

glsl_parser_extras.cpp

@@ -718,9 +718,7 @@ main(int argc, char **argv)
       ((ast_node *)ptr)->print();
    }
 
-   foreach (ptr, & state.translation_unit) {
-      ((ast_node *)ptr)->hir(&instructions, &state);
-   }
+   _mesa_ast_to_hir(&instructions, &state);
 
    printf("\n\n");
    foreach_iter(exec_list_iterator, iter, instructions) {