[vala/staging] codegen: No tmp for method-calls without ref/out params returning ValueType

[Rico Tzschichholz <ricotz src gnome org>]

commit b71f461136823404aeedfbf8b0047a5ad3852573
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Thu Mar 9 16:52:37 2017 +0100

    codegen: No tmp for method-calls without ref/out params returning ValueType
    
    https://bugzilla.gnome.org/show_bug.cgi?id=789071

 codegen/valaccodemethodcallmodule.vala |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valaccodemethodcallmodule.vala b/codegen/valaccodemethodcallmodule.vala
index a22a4fe..03f4aaa 100644
--- a/codegen/valaccodemethodcallmodule.vala
+++ b/codegen/valaccodemethodcallmodule.vala
@@ -803,6 +803,9 @@ public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
 
                        if (m != null && m.get_format_arg_index () >= 0) {
                                set_cvalue (expr, ccall_expr);
+                       } else if (!return_result_via_out_param && !has_ref_out_param (m)
+                           && (result_type is ValueType && !result_type.is_disposable ())) {
+                               set_cvalue (expr, ccall_expr);
                        } else if (!return_result_via_out_param) {
                                var temp_var = get_temp_variable (result_type, result_type.value_owned, null, 
false);
                                var temp_ref = get_variable_cexpression (temp_var.name);
@@ -894,5 +897,17 @@ public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
 
                return to_string_func;
        }
+
+       bool has_ref_out_param (Method? m) {
+               if (m == null) {
+                       return false;
+               }
+               foreach (var param in m.get_parameters ()) {
+                       if (param.direction != ParameterDirection.IN) {
+                               return true;
+                       }
+               }
+               return false;
+       }
 }