Vector ICs: Turbofan vector store ic support

src/arm/full-codegen-arm.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 2532 matching lines @@
       break;
     default:
       UNREACHABLE();
   }
 
   __ bind(&done);
   context()->Plug(r0);
 }
 
 
-void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
+void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit,
+                                                  int* used_store_slots) {
   // Constructor is in r0.
   DCHECK(lit != NULL);
   __ push(r0);
 
   // No access check is needed here since the constructor is created by the
   // class literal.
   Register scratch = r1;
   __ ldr(scratch,
          FieldMemOperand(r0, JSFunction::kPrototypeOrInitialMapOffset));
   __ push(scratch);
 
-  // store_slot_index points to the vector IC slot for the next store IC used.
-  // ClassLiteral::ComputeFeedbackRequirements controls the allocation of slots
-  // and must be updated if the number of store ICs emitted here changes.
-  int store_slot_index = 0;
   for (int i = 0; i < lit->properties()->length(); i++) {
     ObjectLiteral::Property* property = lit->properties()->at(i);
     Expression* value = property->value();
 
     if (property->is_static()) {
       __ ldr(scratch, MemOperand(sp, kPointerSize));  // constructor
     } else {
       __ ldr(scratch, MemOperand(sp, 0));  // prototype
     }
     __ push(scratch);
     EmitPropertyKey(property, lit->GetIdForProperty(i));
 
     // The static prototype property is read only. We handle the non computed
     // property name case in the parser. Since this is the only case where we
     // need to check for an own read only property we special case this so we do
     // not need to do this for every property.
     if (property->is_static() && property->is_computed_name()) {
       __ CallRuntime(Runtime::kThrowIfStaticPrototype, 1);
       __ push(r0);
     }
 
     VisitForStackValue(value);
     EmitSetHomeObjectIfNeeded(value, 2,
-                              lit->SlotForHomeObject(value, &store_slot_index));
+                              lit->SlotForHomeObject(value, used_store_slots));
 
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
       case ObjectLiteral::Property::PROTOTYPE:
         UNREACHABLE();
       case ObjectLiteral::Property::COMPUTED:
         __ CallRuntime(Runtime::kDefineClassMethod, 3);
         break;
 
@@ skipping 12 matching lines @@
       default:
         UNREACHABLE();
     }
   }
 
   // prototype
   __ CallRuntime(Runtime::kToFastProperties, 1);
 
   // constructor
   __ CallRuntime(Runtime::kToFastProperties, 1);
-
-  // Verify that compilation exactly consumed the number of store ic slots that
-  // the ClassLiteral node had to offer.
-  DCHECK(!FLAG_vector_stores || store_slot_index == lit->slot_count());
 }
 
 
 void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) {
   __ pop(r1);
   Handle<Code> code =
       CodeFactory::BinaryOpIC(isolate(), op, strength(language_mode())).code();
   JumpPatchSite patch_site(masm_);    // unbound, signals no inlined smi code.
   CallIC(code, expr->BinaryOperationFeedbackId());
   patch_site.EmitPatchInfo();
@@ skipping 2977 matching lines @@
   DCHECK(interrupt_address ==
          isolate->builtins()->OsrAfterStackCheck()->entry());
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM