Introduce FLAG_vector_ics.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index f1821d3555943bb0bf050b3bf6760e0f4347c199..005fbdba1cc87940e90b11dc4e25a496b7514708 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -2043,8 +2043,13 @@ LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), rsi);
   LOperand* global_object = UseFixed(instr->global_object(),
                                      LoadIC::ReceiverRegister());
+  LOperand* vector = NULL;
+  if (FLAG_vector_ics) {
+    vector = FixedTemp(LoadIC::VectorRegister());
+  }
+
   LLoadGlobalGeneric* result =
-      new(zone()) LLoadGlobalGeneric(context, global_object);
+      new(zone()) LLoadGlobalGeneric(context, global_object, vector);
   return MarkAsCall(DefineFixed(result, rax), instr);
 }
 
@@ -2110,7 +2115,12 @@ LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) {
 LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), rsi);
   LOperand* object = UseFixed(instr->object(), LoadIC::ReceiverRegister());
-  LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(context, object);
+  LOperand* vector = NULL;
+  if (FLAG_vector_ics) {
+    vector = FixedTemp(LoadIC::VectorRegister());
+  }
+  LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(
+      context, object, vector);
   return MarkAsCall(DefineFixed(result, rax), instr);
 }
 
@@ -2197,9 +2207,13 @@ LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), rsi);
   LOperand* object = UseFixed(instr->object(), LoadIC::ReceiverRegister());
   LOperand* key = UseFixed(instr->key(), LoadIC::NameRegister());
+  LOperand* vector = NULL;
+  if (FLAG_vector_ics) {
+    vector = FixedTemp(LoadIC::VectorRegister());
+  }
 
   LLoadKeyedGeneric* result =
-      new(zone()) LLoadKeyedGeneric(context, object, key);
+      new(zone()) LLoadKeyedGeneric(context, object, key, vector);
   return MarkAsCall(DefineFixed(result, rax), instr);
 }