Disable code compaction again while we investigate buildbot check failures.

Review URL: https://chromiumcodereview.appspot.com/9351013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10619 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/flag-definitions.h

@@ -307,6 +307,8 @@ DEFINE_bool(cleanup_caches_in_maps_at_gc, true,
             "Flush code caches in maps during mark compact cycle.")
 DEFINE_bool(never_compact, false,
             "Never perform compaction on full GC - testing only")
+DEFINE_bool(compact_code_space, false,
+            "Compact code space on full non-incremental collections")
 DEFINE_bool(cleanup_code_caches_at_gc, true,
             "Flush inline caches prior to mark compact collection and "
             "flush code caches in maps during mark compact cycle.")

src/mark-compact.cc

@@ -249,7 +249,7 @@ bool MarkCompactCollector::StartCompaction(CompactionMode mode) {
     CollectEvacuationCandidates(heap()->old_pointer_space());
     CollectEvacuationCandidates(heap()->old_data_space());
 
-    if (mode == NON_INCREMENTAL_COMPACTION) {
+    if (FLAG_compact_code_space && mode == NON_INCREMENTAL_COMPACTION) {
       CollectEvacuationCandidates(heap()->code_space());
     } else if (FLAG_trace_fragmentation) {
       TraceFragmentation(heap()->code_space());