[svn:parrot] r38476 - trunk/src

[chromatic at svn.parrot.org]

Author: chromatic
Date: Tue May  5 02:20:48 2009
New Revision: 38476
URL: https://trac.parrot.org/parrot/changeset/38476

Log:
[oo] Reduced the number of PMCs created in Parrot_ComputeMRO_C3, which is a
modest optimization.

Modified:
   trunk/src/oo.c

Modified: trunk/src/oo.c
==============================================================================
--- trunk/src/oo.c	Tue May  5 01:19:03 2009	(r38475)
+++ trunk/src/oo.c	Tue May  5 02:20:48 2009	(r38476)
@@ -1101,7 +1101,7 @@
 {
     ASSERT_ARGS(Parrot_ComputeMRO_C3)
     PMC *result;
-    PMC * const merge_list = pmc_new(interp, enum_class_ResizablePMCArray);
+    PMC *merge_list = PMCNULL;
     PMC *immediate_parents;
     int i, parent_count;
 
@@ -1131,6 +1131,10 @@
         if (PMC_IS_NULL(lin))
             return PMCNULL;
 
+        /* instantiated lazily */
+        if (PMC_IS_NULL(merge_list))
+            merge_list = pmc_new(interp, enum_class_ResizablePMCArray);
+
         VTABLE_push_pmc(interp, merge_list, lin);
     }