VectorICs: Remove --vector-stores flag.

src/ic/arm64/handler-compiler-arm64.cc

Index: src/ic/arm64/handler-compiler-arm64.cc
diff --git a/src/ic/arm64/handler-compiler-arm64.cc b/src/ic/arm64/handler-compiler-arm64.cc
index 576d333428b79b0eeca94dde1f59e45bdc5d97a4..e5f872dd9778188bb490b6f721e63bdad519ceca 100644
--- a/src/ic/arm64/handler-compiler-arm64.cc
+++ b/src/ic/arm64/handler-compiler-arm64.cc
@@ -300,15 +300,10 @@ void NamedLoadHandlerCompiler::GenerateLoadViaGetter(
 
 
 static void StoreIC_PushArgs(MacroAssembler* masm) {
-  if (FLAG_vector_stores) {
-    __ Push(StoreDescriptor::ReceiverRegister(),
-            StoreDescriptor::NameRegister(), StoreDescriptor::ValueRegister(),
-            VectorStoreICDescriptor::SlotRegister(),
-            VectorStoreICDescriptor::VectorRegister());
-  } else {
-    __ Push(StoreDescriptor::ReceiverRegister(),
-            StoreDescriptor::NameRegister(), StoreDescriptor::ValueRegister());
-  }
+  __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
+          StoreDescriptor::ValueRegister(),
+          VectorStoreICDescriptor::SlotRegister(),
+          VectorStoreICDescriptor::VectorRegister());
 }
 
 
@@ -317,7 +312,7 @@ void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
 
   // The slow case calls into the runtime to complete the store without causing
   // an IC miss that would otherwise cause a transition to the generic stub.
-  __ TailCallRuntime(Runtime::kStoreIC_Slow, FLAG_vector_stores ? 5 : 3, 1);
+  __ TailCallRuntime(Runtime::kStoreIC_Slow, 5, 1);
 }
 
 
@@ -327,8 +322,7 @@ void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
 
   // The slow case calls into the runtime to complete the store without causing
   // an IC miss that would otherwise cause a transition to the generic stub.
-  __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow, FLAG_vector_stores ? 5 : 3,
-                     1);
+  __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow, 5, 1);
 }