Register dependent codes before populating deoptimization data, which can cause GC.

src/lithium.cc

Index: src/lithium.cc
diff --git a/src/lithium.cc b/src/lithium.cc
index e943cc068544a1e4d58b3890cb77df0072876eb6..45ba0e0a0bff3b1026dc22d2a9eac2c368d315d3 100644
--- a/src/lithium.cc
+++ b/src/lithium.cc
@@ -457,9 +457,6 @@ Handle<Code> LChunk::Codegen(Code::Kind kind) {
     Handle<Code> code =
         CodeGenerator::MakeCodeEpilogue(&assembler, flags, info());
     generator.FinishCode(code);
-    if (FLAG_weak_embedded_maps_in_optimized_code) {
-      RegisterDependentCodeForEmbeddedMaps(code);
-    }
     CodeGenerator::PrintCode(code, info());
     return code;
   }
@@ -467,31 +464,6 @@ Handle<Code> LChunk::Codegen(Code::Kind kind) {
 }
 
 
-void LChunk::RegisterDependentCodeForEmbeddedMaps(Handle<Code> code) {
-  ZoneList<Handle<Map> > maps(1, zone());
-  int mode_mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT);
-  for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
-    RelocInfo::Mode mode = it.rinfo()->rmode();
-    if (mode == RelocInfo::EMBEDDED_OBJECT &&
-        it.rinfo()->target_object()->IsMap()) {
-      Handle<Map> map(Map::cast(it.rinfo()->target_object()));
-      if (map->CanTransition()) {
-        maps.Add(map, zone());
-      }
-    }
-  }
-#ifdef VERIFY_HEAP
-  // This disables verification of weak embedded maps after full GC.
-  // AddDependentCode can cause a GC, which would observe the state where
-  // this code is not yet in the depended code lists of the embedded maps.
-  NoWeakEmbeddedMapsVerificationScope disable_verification_of_embedded_maps;
-#endif
-  for (int i = 0; i < maps.length(); i++) {
-    maps.at(i)->AddDependentCode(code);
-  }
-}
-
-
 void LChunk::set_allocated_double_registers(BitVector* allocated_registers) {
   allocated_double_registers_ = allocated_registers;
   BitVector* doubles = allocated_double_registers();