Directly remove slot buffer entries in deoptimized code objects.

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index 0e6bb835e19141e3f46f185aa3cfd91afb995eef..525cbf28c7b39cd4228aaf5ff9160db23e34469a 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -414,9 +414,10 @@ void Deoptimizer::DeoptimizeMarkedCodeForContext(Context* context) {
     PatchCodeForDeoptimization(isolate, codes[i]);
 
     // We might be in the middle of incremental marking with compaction.
-    // Tell collector to treat this code object in a special way and
-    // ignore all slots that might have been recorded on it.
-    isolate->heap()->mark_compact_collector()->InvalidateCode(codes[i]);
+    // Ignore all slots that might have been recorded on the deoptimized code
+    // object.
+    Code* code = codes[i];
+    code->GetHeap()->mark_compact_collector()->RemoveObjectSlots(code);

[Michael Starzinger, 2015/06/30 08:54:19]

nit: Is there a particular reason we cannot use isolate->heap() here any longer
... otherwise I would vote for going back to it and inlining all into one single
line.

[Hannes Payer (out of office), 2015/06/30 09:02:10]

Done.

   }
 }