[heap] Add detailed timers to --trace-gc-nvp MC marking phase.

src/heap/gc-tracer.h

Index: src/heap/gc-tracer.h
diff --git a/src/heap/gc-tracer.h b/src/heap/gc-tracer.h
index e96dfd4a80a6cfc7c642a94413044fb1b4e333f3..40d06ad8003338af03e13818d596b13b4cf18ccb 100644
--- a/src/heap/gc-tracer.h
+++ b/src/heap/gc-tracer.h
@@ -99,6 +99,16 @@ class GCTracer {
     enum ScopeId {
       EXTERNAL,
       MC_MARK,
+      MC_MARK_INC,

[ulan, 2015/10/16 14:18:31]

Let's find a more descriptive name for this.
How about MC_MARK_FINISH_INCREMENTAL ?

[Hannes Payer (out of office), 2015/10/16 14:24:43]

Done.

+      MC_MARK_PREPCODEFLUSH,
+      MC_MARK_ROOT,
+      MC_MARK_TOPOPT,
+      MC_MARK_RETAINMAPS,
+      MC_MARK_WEAKCLOSURE,
+      MC_MARK_STRINGTABLE,
+      MC_MARK_WEAKREFS,
+      MC_MARK_GLOBALHANDLES,
+      MC_MARK_CODEFLUSH,
       MC_SWEEP,
       MC_SWEEP_NEWSPACE,
       MC_SWEEP_OLDSPACE,