Reland Vector ICs: platform support for vector-based stores.

src/ic/arm64/ic-arm64.cc

Index: src/ic/arm64/ic-arm64.cc
diff --git a/src/ic/arm64/ic-arm64.cc b/src/ic/arm64/ic-arm64.cc
index 27c4f714311b04d1d7c8360f3542d8eb0f280082..c4c856aab7ef96fc5faffef1b1236d72cee4e543 100644
--- a/src/ic/arm64/ic-arm64.cc
+++ b/src/ic/arm64/ic-arm64.cc
@@ -696,7 +696,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
     // change the IC from any downstream misses, a dummy vector can be used.
     Register vector = VectorStoreICDescriptor::VectorRegister();
     Register slot = VectorStoreICDescriptor::SlotRegister();
-    DCHECK(!AreAliased(vector, slot, x3, x4, x5, x6));
+    DCHECK(!AreAliased(vector, slot, x5, x6, x7, x8));
     Handle<TypeFeedbackVector> dummy_vector =
         TypeFeedbackVector::DummyVector(masm->isolate());
     int slot_index = dummy_vector->GetIndex(
@@ -708,7 +708,7 @@ void KeyedStoreIC::GenerateMegamorphic(MacroAssembler* masm,
   Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
       Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(masm, Code::STORE_IC, flags,
-                                               receiver, key, x3, x4, x5, x6);
+                                               receiver, key, x5, x6, x7, x8);
   // Cache miss.
   __ B(&miss);
 
@@ -789,19 +789,21 @@ void StoreIC::GenerateNormal(MacroAssembler* masm) {
   Register value = StoreDescriptor::ValueRegister();
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
-  Register dictionary = x3;
-  DCHECK(!AreAliased(value, receiver, name, x3, x4, x5));
+  Register dictionary = x5;
+  DCHECK(!AreAliased(value, receiver, name,
+                     VectorStoreICDescriptor::SlotRegister(),
+                     VectorStoreICDescriptor::VectorRegister(), x5, x6, x7));
 
   __ Ldr(dictionary, FieldMemOperand(receiver, JSObject::kPropertiesOffset));
 
-  GenerateDictionaryStore(masm, &miss, dictionary, name, value, x4, x5);
+  GenerateDictionaryStore(masm, &miss, dictionary, name, value, x6, x7);
   Counters* counters = masm->isolate()->counters();
-  __ IncrementCounter(counters->store_normal_hit(), 1, x4, x5);
+  __ IncrementCounter(counters->store_normal_hit(), 1, x6, x7);
   __ Ret();
 
   // Cache miss: Jump to runtime.
   __ Bind(&miss);
-  __ IncrementCounter(counters->store_normal_miss(), 1, x4, x5);
+  __ IncrementCounter(counters->store_normal_miss(), 1, x6, x7);
   GenerateMiss(masm);
 }