Hydrogen code stubs for vector-based ICs.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index 8b20e86c70a60c6f5d73a49991873354d7cfdb34..3be2fc41d0788a2a26e2a24a6e4d519f631b5035 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1138,9 +1138,17 @@ LInstruction* LChunkBuilder::DoTailCallThroughMegamorphicCache(
       UseFixed(instr->receiver(), LoadDescriptor::ReceiverRegister());
   LOperand* name_register =
       UseFixed(instr->name(), LoadDescriptor::NameRegister());
+  LOperand* slot = NULL;
+  LOperand* vector = NULL;
+  if (FLAG_vector_ics) {
+    slot = UseFixed(instr->slot(), VectorLoadICDescriptor::SlotRegister());
+    vector =
+        UseFixed(instr->vector(), VectorLoadICDescriptor::VectorRegister());
+  }
+
   // Not marked as call. It can't deoptimize, and it never returns.
   return new (zone()) LTailCallThroughMegamorphicCache(
-      context, receiver_register, name_register);
+      context, receiver_register, name_register, slot, vector);
 }
 
 
@@ -2115,7 +2123,7 @@ LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) {
   LOperand* global_object =
       UseFixed(instr->global_object(), LoadDescriptor::ReceiverRegister());
   LOperand* vector = NULL;
-  if (FLAG_vector_ics) {
+  if (instr->HasVectorAndSlot()) {
     vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
   }
 
@@ -2176,7 +2184,7 @@ LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) {
   LOperand* object =
       UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
   LOperand* vector = NULL;
-  if (FLAG_vector_ics) {
+  if (instr->HasVectorAndSlot()) {
     vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
   }
   LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric(
@@ -2241,7 +2249,7 @@ LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
       UseFixed(instr->object(), LoadDescriptor::ReceiverRegister());
   LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister());
   LOperand* vector = NULL;
-  if (FLAG_vector_ics) {
+  if (instr->HasVectorAndSlot()) {
     vector = FixedTemp(VectorLoadICDescriptor::VectorRegister());
   }
   LLoadKeyedGeneric* result =