Introduce conservative sweeping.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 0c76f6944f86684b31e360d5fe1d2f6d40ba8b78..943aa7ced5636f4a053232f1bbdb3fd6e0ebe788 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -32,6 +32,7 @@
 #include "bootstrapper.h"
 #include "builtins.h"
 #include "ic-inl.h"
+#include "mark-compact.h"
 #include "vm-state-inl.h"
 
 namespace v8 {
@@ -350,6 +351,9 @@ static FixedArray* LeftTrimFixedArray(FixedArray* elms, int to_trim) {
   // we still do it.
   Heap::CreateFillerObjectAt(elms->address(), to_trim * kPointerSize);
 
+  Marking::TransferMark(elms->address(),

[Erik Corry, 2011/01/19 13:46:48]

Comment?

[Vyacheslav Egorov (Chromium), 2011/01/20 16:40:21]

Done.

+                        elms->address() + to_trim * kPointerSize);
+
   former_start[to_trim] = Heap::fixed_array_map();
   former_start[to_trim + 1] = Smi::FromInt(len - to_trim);