VectorICs: Remove --vector-stores flag.

src/full-codegen/arm64/full-codegen-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
@@ skipping 1217 matching lines @@
 }
 
 
 void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset,
                                           FeedbackVectorSlot slot) {
   DCHECK(NeedsHomeObject(initializer));
   __ Peek(StoreDescriptor::ReceiverRegister(), 0);
   __ Mov(StoreDescriptor::NameRegister(),
          Operand(isolate()->factory()->home_object_symbol()));
   __ Peek(StoreDescriptor::ValueRegister(), offset * kPointerSize);
-  if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
+  EmitLoadStoreICSlot(slot);
   CallStoreIC();
 }
 
 
 void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer,
                                                      int offset,
                                                      FeedbackVectorSlot slot) {
   DCHECK(NeedsHomeObject(initializer));
   __ Move(StoreDescriptor::ReceiverRegister(), x0);
   __ Mov(StoreDescriptor::NameRegister(),
          Operand(isolate()->factory()->home_object_symbol()));
   __ Peek(StoreDescriptor::ValueRegister(), offset * kPointerSize);
-  if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
+  EmitLoadStoreICSlot(slot);
   CallStoreIC();
 }
 
 
 void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
                                                       TypeofMode typeof_mode,
                                                       Label* slow) {
   Register current = cp;
   Register next = x10;
   Register temp = x11;
@@ skipping 294 matching lines @@
         // Fall through.
       case ObjectLiteral::Property::COMPUTED:
         // It is safe to use [[Put]] here because the boilerplate already
         // contains computed properties with an uninitialized value.
         if (key->value()->IsInternalizedString()) {
           if (property->emit_store()) {
             VisitForAccumulatorValue(value);
             DCHECK(StoreDescriptor::ValueRegister().is(x0));
             __ Mov(StoreDescriptor::NameRegister(), Operand(key->value()));
             __ Peek(StoreDescriptor::ReceiverRegister(), 0);
-            if (FLAG_vector_stores) {
-              EmitLoadStoreICSlot(property->GetSlot(0));
-              CallStoreIC();
-            } else {
-              CallStoreIC(key->LiteralFeedbackId());
-            }
+            EmitLoadStoreICSlot(property->GetSlot(0));
+            CallStoreIC();
             PrepareForBailoutForId(key->id(), NO_REGISTERS);
 
             if (NeedsHomeObject(value)) {
               EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1));
             }
           } else {
             VisitForEffect(value);
           }
           break;
         }
@@ skipping 171 matching lines @@
     // is already set in the cloned array.
     if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue;
 
     if (!result_saved) {
       __ Mov(x1, Smi::FromInt(expr->literal_index()));
       __ Push(x0, x1);
       result_saved = true;
     }
     VisitForAccumulatorValue(subexpr);
 
-    if (FLAG_vector_stores) {
-      __ Mov(StoreDescriptor::NameRegister(), Smi::FromInt(array_index));
-      __ Peek(StoreDescriptor::ReceiverRegister(), kPointerSize);
-      EmitLoadStoreICSlot(expr->LiteralFeedbackSlot());
-      Handle<Code> ic =
-          CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
-      CallIC(ic);
-    } else if (has_fast_elements) {
-      int offset = FixedArray::kHeaderSize + (array_index * kPointerSize);
-      __ Peek(x6, kPointerSize);  // Copy of array literal.
-      __ Ldr(x1, FieldMemOperand(x6, JSObject::kElementsOffset));
-      __ Str(result_register(), FieldMemOperand(x1, offset));
-      // Update the write barrier for the array store.
-      __ RecordWriteField(x1, offset, result_register(), x10,
-                          kLRHasBeenSaved, kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET, INLINE_SMI_CHECK);
-    } else {
-      __ Mov(x3, Smi::FromInt(array_index));
-      StoreArrayLiteralElementStub stub(isolate());
-      __ CallStub(&stub);
-    }
+    __ Mov(StoreDescriptor::NameRegister(), Smi::FromInt(array_index));
+    __ Peek(StoreDescriptor::ReceiverRegister(), kPointerSize);
+    EmitLoadStoreICSlot(expr->LiteralFeedbackSlot());
+    Handle<Code> ic =
+        CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
+    CallIC(ic);
 
     PrepareForBailoutForId(expr->GetIdForElement(array_index), NO_REGISTERS);
   }
 
   // In case the array literal contains spread expressions it has two parts. The
   // first part is  the "static" array which has a literal index is  handled
   // above. The second part is the part after the first spread expression
   // (inclusive) and these elements gets appended to the array. Note that the
   // number elements an iterable produces is unknown ahead of time.
   if (array_index < length && result_saved) {
@@ skipping 408 matching lines @@
     }
     case NAMED_PROPERTY: {
       __ Push(x0);  // Preserve value.
       VisitForAccumulatorValue(prop->obj());
       // TODO(all): We could introduce a VisitForRegValue(reg, expr) to avoid
       // this copy.
       __ Mov(StoreDescriptor::ReceiverRegister(), x0);
       __ Pop(StoreDescriptor::ValueRegister());  // Restore value.
       __ Mov(StoreDescriptor::NameRegister(),
              Operand(prop->key()->AsLiteral()->value()));
-      if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
+      EmitLoadStoreICSlot(slot);
       CallStoreIC();
       break;
     }
     case NAMED_SUPER_PROPERTY: {
       __ Push(x0);
       VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var());
       VisitForAccumulatorValue(
           prop->obj()->AsSuperPropertyReference()->home_object());
       // stack: value, this; x0: home_object
       Register scratch = x10;
@@ skipping 27 matching lines @@
       EmitKeyedSuperPropertyStore(prop);
       break;
     }
     case KEYED_PROPERTY: {
       __ Push(x0);  // Preserve value.
       VisitForStackValue(prop->obj());
       VisitForAccumulatorValue(prop->key());
       __ Mov(StoreDescriptor::NameRegister(), x0);
       __ Pop(StoreDescriptor::ReceiverRegister(),
              StoreDescriptor::ValueRegister());
-      if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
+      EmitLoadStoreICSlot(slot);
       Handle<Code> ic =
           CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
       CallIC(ic);
       break;
     }
   }
   context()->Plug(x0);
 }
 
 
@@ skipping 10 matching lines @@
 }
 
 
 void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op,
                                                FeedbackVectorSlot slot) {
   ASM_LOCATION("FullCodeGenerator::EmitVariableAssignment");
   if (var->IsUnallocated()) {
     // Global var, const, or let.
     __ Mov(StoreDescriptor::NameRegister(), Operand(var->name()));
     __ Ldr(StoreDescriptor::ReceiverRegister(), GlobalObjectMemOperand());
-    if (FLAG_vector_stores) EmitLoadStoreICSlot(slot);
+    EmitLoadStoreICSlot(slot);
     CallStoreIC();
 
   } else if (var->mode() == LET && op != Token::INIT) {
     // Non-initializing assignment to let variable needs a write barrier.
     DCHECK(!var->IsLookupSlot());
     DCHECK(var->IsStackAllocated() || var->IsContextSlot());
     Label assign;
     MemOperand location = VarOperand(var, x1);
     __ Ldr(x10, location);
     __ JumpIfNotRoot(x10, Heap::kTheHoleValueRootIndex, &assign);
@@ skipping 86 matching lines @@
 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
   ASM_LOCATION("FullCodeGenerator::EmitNamedPropertyAssignment");
   // Assignment to a property, using a named store IC.
   Property* prop = expr->target()->AsProperty();
   DCHECK(prop != NULL);
   DCHECK(prop->key()->IsLiteral());
 
   __ Mov(StoreDescriptor::NameRegister(),
          Operand(prop->key()->AsLiteral()->value()));
   __ Pop(StoreDescriptor::ReceiverRegister());
-  if (FLAG_vector_stores) {
-    EmitLoadStoreICSlot(expr->AssignmentSlot());
-    CallStoreIC();
-  } else {
-    CallStoreIC(expr->AssignmentFeedbackId());
-  }
+  EmitLoadStoreICSlot(expr->AssignmentSlot());
+  CallStoreIC();
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(x0);
 }
 
 
 void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) {
   // Assignment to named property of super.
   // x0 : value
   // stack : receiver ('this'), home_object
@@ skipping 26 matching lines @@
 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) {
   ASM_LOCATION("FullCodeGenerator::EmitKeyedPropertyAssignment");
   // Assignment to a property, using a keyed store IC.
 
   // TODO(all): Could we pass this in registers rather than on the stack?
   __ Pop(StoreDescriptor::NameRegister(), StoreDescriptor::ReceiverRegister());
   DCHECK(StoreDescriptor::ValueRegister().is(x0));
 
   Handle<Code> ic =
       CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
-  if (FLAG_vector_stores) {
-    EmitLoadStoreICSlot(expr->AssignmentSlot());
-    CallIC(ic);
-  } else {
-    CallIC(ic, expr->AssignmentFeedbackId());
-  }
+  EmitLoadStoreICSlot(expr->AssignmentSlot());
+  CallIC(ic);
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(x0);
 }
 
 
 void FullCodeGenerator::VisitProperty(Property* expr) {
   Comment cmnt(masm_, "[ Property");
   SetExpressionPosition(expr);
   Expression* key = expr->key();
@@ skipping 1826 matching lines @@
         EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(),
                                Token::ASSIGN, expr->CountSlot());
         PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
         context()->Plug(x0);
       }
       break;
     case NAMED_PROPERTY: {
       __ Mov(StoreDescriptor::NameRegister(),
              Operand(prop->key()->AsLiteral()->value()));
       __ Pop(StoreDescriptor::ReceiverRegister());
-      if (FLAG_vector_stores) {
-        EmitLoadStoreICSlot(expr->CountSlot());
-        CallStoreIC();
-      } else {
-        CallStoreIC(expr->CountStoreFeedbackId());
-      }
+      EmitLoadStoreICSlot(expr->CountSlot());
+      CallStoreIC();
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(x0);
       }
       break;
     }
@@ skipping 17 matching lines @@
       } else {
         context()->Plug(x0);
       }
       break;
     }
     case KEYED_PROPERTY: {
       __ Pop(StoreDescriptor::NameRegister());
       __ Pop(StoreDescriptor::ReceiverRegister());
       Handle<Code> ic =
           CodeFactory::KeyedStoreIC(isolate(), language_mode()).code();
-      if (FLAG_vector_stores) {
-        EmitLoadStoreICSlot(expr->CountSlot());
-        CallIC(ic);
-      } else {
-        CallIC(ic, expr->CountStoreFeedbackId());
-      }
+      EmitLoadStoreICSlot(expr->CountSlot());
+      CallIC(ic);
       PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
       if (expr->is_postfix()) {
         if (!context()->IsEffect()) {
           context()->PlugTOS();
         }
       } else {
         context()->Plug(x0);
       }
       break;
     }
@@ skipping 609 matching lines @@
   DCHECK(!result_register().is(x10));
   ExternalReference pending_message_obj =
       ExternalReference::address_of_pending_message_obj(isolate());
   __ LoadRoot(x10, Heap::kTheHoleValueRootIndex);
   __ Mov(x13, pending_message_obj);
   __ Str(x10, MemOperand(x13));
 }
 
 
 void FullCodeGenerator::EmitLoadStoreICSlot(FeedbackVectorSlot slot) {
-  DCHECK(FLAG_vector_stores && !slot.IsInvalid());
+  DCHECK(!slot.IsInvalid());
   __ Mov(VectorStoreICTrampolineDescriptor::SlotRegister(), SmiFromSlot(slot));
 }
 
 
 #undef __
 
 
 void BackEdgeTable::PatchAt(Code* unoptimized_code,
                             Address pc,
                             BackEdgeState target_state,
@@ skipping 86 matching lines @@
   }
 
   return INTERRUPT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64