Experimental parser: merge r19949

src/x64/stub-cache-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 263 matching lines @@
   // Check that the object is a JS array.
   __ CmpObjectType(receiver, JS_ARRAY_TYPE, scratch);
   __ j(not_equal, miss_label);
 
   // Load length directly from the JS array.
   __ movp(rax, FieldOperand(receiver, JSArray::kLengthOffset));
   __ ret(0);
 }
 
 
-// Generate code to check if an object is a string.  If the object is
-// a string, the map's instance type is left in the scratch register.
-static void GenerateStringCheck(MacroAssembler* masm,
-                                Register receiver,
-                                Register scratch,
-                                Label* smi,
-                                Label* non_string_object) {
-  // Check that the object isn't a smi.
-  __ JumpIfSmi(receiver, smi);
-
-  // Check that the object is a string.
-  __ movp(scratch, FieldOperand(receiver, HeapObject::kMapOffset));
-  __ movzxbq(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset));
-  STATIC_ASSERT(kNotStringTag != 0);
-  __ testl(scratch, Immediate(kNotStringTag));
-  __ j(not_zero, non_string_object);
-}
-
-
-void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm,
-                                            Register receiver,
-                                            Register scratch1,
-                                            Register scratch2,
-                                            Label* miss) {
-  Label check_wrapper;
-
-  // Check if the object is a string leaving the instance type in the
-  // scratch register.
-  GenerateStringCheck(masm, receiver, scratch1, miss, &check_wrapper);
-
-  // Load length directly from the string.
-  __ movp(rax, FieldOperand(receiver, String::kLengthOffset));
-  __ ret(0);
-
-  // Check if the object is a JSValue wrapper.
-  __ bind(&check_wrapper);
-  __ cmpl(scratch1, Immediate(JS_VALUE_TYPE));
-  __ j(not_equal, miss);
-
-  // Check if the wrapped value is a string and load the length
-  // directly if it is.
-  __ movp(scratch2, FieldOperand(receiver, JSValue::kValueOffset));
-  GenerateStringCheck(masm, scratch2, scratch1, miss, miss);
-  __ movp(rax, FieldOperand(scratch2, String::kLengthOffset));
-  __ ret(0);
-}
-
-
 void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm,
                                                  Register receiver,
                                                  Register result,
                                                  Register scratch,
                                                  Label* miss_label) {
   __ TryGetFunctionPrototype(receiver, result, miss_label);
   if (!result.is(rax)) __ movp(rax, result);
   __ ret(0);
 }
 
 
 void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm,
                                             Register dst,
                                             Register src,
                                             bool inobject,
                                             int index,
                                             Representation representation) {
-  ASSERT(!FLAG_track_double_fields || !representation.IsDouble());
+  ASSERT(!representation.IsDouble());
   int offset = index * kPointerSize;
   if (!inobject) {
     // Calculate the offset into the properties array.
     offset = offset + FixedArray::kHeaderSize;
     __ movp(dst, FieldOperand(src, JSObject::kPropertiesOffset));
     src = dst;
   }
   __ movp(dst, FieldOperand(src, offset));
 }
 
@@ skipping 170 matching lines @@
   int descriptor = transition->LastAdded();
   DescriptorArray* descriptors = transition->instance_descriptors();
   PropertyDetails details = descriptors->GetDetails(descriptor);
   Representation representation = details.representation();
   ASSERT(!representation.IsNone());
 
   if (details.type() == CONSTANT) {
     Handle<Object> constant(descriptors->GetValue(descriptor), masm->isolate());
     __ Cmp(value_reg, constant);
     __ j(not_equal, miss_label);
-  } else if (FLAG_track_fields && representation.IsSmi()) {
+  } else if (representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+  } else if (representation.IsHeapObject()) {
     __ JumpIfSmi(value_reg, miss_label);
-  } else if (FLAG_track_double_fields && representation.IsDouble()) {
+  } else if (representation.IsDouble()) {
     Label do_store, heap_number;
     __ AllocateHeapNumber(storage_reg, scratch1, slow);
 
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiToInteger32(scratch1, value_reg);
     __ Cvtlsi2sd(xmm0, scratch1);
     __ jmp(&do_store);
 
     __ bind(&heap_number);
     __ CheckMap(value_reg, masm->isolate()->factory()->heap_number_map(),
@@ skipping 52 matching lines @@
   // face of a transition we can use the old map here because the size of the
   // object and the number of in-object properties is not going to change.
   index -= object->map()->inobject_properties();
 
   // TODO(verwaest): Share this code as a code stub.
   SmiCheck smi_check = representation.IsTagged()
       ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index < 0) {
     // Set the property straight into the object.
     int offset = object->map()->instance_size() + (index * kPointerSize);
-    if (FLAG_track_double_fields && representation.IsDouble()) {
+    if (representation.IsDouble()) {
       __ movp(FieldOperand(receiver_reg, offset), storage_reg);
     } else {
       __ movp(FieldOperand(receiver_reg, offset), value_reg);
     }
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
-      if (!FLAG_track_double_fields || !representation.IsDouble()) {
+      if (!representation.IsDouble()) {
         __ movp(storage_reg, value_reg);
       }
       __ RecordWriteField(
           receiver_reg, offset, storage_reg, scratch1, kDontSaveFPRegs,
           EMIT_REMEMBERED_SET, smi_check);
     }
   } else {
     // Write to the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     // Get the properties array (optimistically).
     __ movp(scratch1, FieldOperand(receiver_reg, JSObject::kPropertiesOffset));
-    if (FLAG_track_double_fields && representation.IsDouble()) {
+    if (representation.IsDouble()) {
       __ movp(FieldOperand(scratch1, offset), storage_reg);
     } else {
       __ movp(FieldOperand(scratch1, offset), value_reg);
     }
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
-      if (!FLAG_track_double_fields || !representation.IsDouble()) {
+      if (!representation.IsDouble()) {
         __ movp(storage_reg, value_reg);
       }
       __ RecordWriteField(
           scratch1, offset, storage_reg, receiver_reg, kDontSaveFPRegs,
           EMIT_REMEMBERED_SET, smi_check);
     }
   }
 
   // Return the value (register rax).
   ASSERT(value_reg.is(rax));
@@ skipping 18 matching lines @@
 
   int index = lookup->GetFieldIndex().field_index();
 
   // Adjust for the number of properties stored in the object. Even in the
   // face of a transition we can use the old map here because the size of the
   // object and the number of in-object properties is not going to change.
   index -= object->map()->inobject_properties();
 
   Representation representation = lookup->representation();
   ASSERT(!representation.IsNone());
-  if (FLAG_track_fields && representation.IsSmi()) {
+  if (representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+  } else if (representation.IsHeapObject()) {
     __ JumpIfSmi(value_reg, miss_label);
-  } else if (FLAG_track_double_fields && representation.IsDouble()) {
+  } else if (representation.IsDouble()) {
     // Load the double storage.
     if (index < 0) {
       int offset = object->map()->instance_size() + (index * kPointerSize);
       __ movp(scratch1, FieldOperand(receiver_reg, offset));
     } else {
       __ movp(scratch1,
               FieldOperand(receiver_reg, JSObject::kPropertiesOffset));
       int offset = index * kPointerSize + FixedArray::kHeaderSize;
       __ movp(scratch1, FieldOperand(scratch1, offset));
     }
@@ skipping 18 matching lines @@
   }
 
   // TODO(verwaest): Share this code as a code stub.
   SmiCheck smi_check = representation.IsTagged()
       ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index < 0) {
     // Set the property straight into the object.
     int offset = object->map()->instance_size() + (index * kPointerSize);
     __ movp(FieldOperand(receiver_reg, offset), value_reg);
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
       // Pass the value being stored in the now unused name_reg.
       __ movp(name_reg, value_reg);
       __ RecordWriteField(
           receiver_reg, offset, name_reg, scratch1, kDontSaveFPRegs,
           EMIT_REMEMBERED_SET, smi_check);
     }
   } else {
     // Write to the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     // Get the properties array (optimistically).
     __ movp(scratch1, FieldOperand(receiver_reg, JSObject::kPropertiesOffset));
     __ movp(FieldOperand(scratch1, offset), value_reg);
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
       // Pass the value being stored in the now unused name_reg.
       __ movp(name_reg, value_reg);
       __ RecordWriteField(
           scratch1, offset, name_reg, receiver_reg, kDontSaveFPRegs,
           EMIT_REMEMBERED_SET, smi_check);
     }
   }
 
   // Return the value (register rax).
@@ skipping 394 matching lines @@
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm)
 
 
 void StoreStubCompiler::GenerateStoreViaSetter(
     MacroAssembler* masm,
     Handle<HeapType> type,
+    Register receiver,
     Handle<JSFunction> setter) {
   // ----------- S t a t e -------------
-  //  -- rax    : value
-  //  -- rcx    : name
-  //  -- rdx    : receiver
   //  -- rsp[0] : return address
   // -----------------------------------
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
-    Register receiver = rdx;
-    Register value = rax;
 
     // Save value register, so we can restore it later.
-    __ push(value);
+    __ push(value());
 
     if (!setter.is_null()) {
       // Call the JavaScript setter with receiver and value on the stack.
       if (IC::TypeToMap(*type, masm->isolate())->IsJSGlobalObjectMap()) {
         // Swap in the global receiver.
         __ movp(receiver,
                 FieldOperand(receiver, JSGlobalObject::kGlobalReceiverOffset));
       }
       __ push(receiver);
-      __ push(value);
+      __ push(value());
       ParameterCount actual(1);
       ParameterCount expected(setter);
       __ InvokeFunction(setter, expected, actual,
                         CALL_FUNCTION, NullCallWrapper());
     } else {
       // If we generate a global code snippet for deoptimization only, remember
       // the place to continue after deoptimization.
       masm->isolate()->heap()->SetSetterStubDeoptPCOffset(masm->pc_offset());
     }
 
@@ skipping 87 matching lines @@
 }
 
 
 Register* KeyedLoadStubCompiler::registers() {
   // receiver, name, scratch1, scratch2, scratch3, scratch4.
   static Register registers[] = { rdx, rax, rbx, rcx, rdi, r8 };
   return registers;
 }
 
 
+Register StoreStubCompiler::value() {
+  return rax;
+}
+
+
 Register* StoreStubCompiler::registers() {
-  // receiver, name, value, scratch1, scratch2, scratch3.
-  static Register registers[] = { rdx, rcx, rax, rbx, rdi, r8 };
+  // receiver, name, scratch1, scratch2, scratch3.
+  static Register registers[] = { rdx, rcx, rbx, rdi, r8 };
   return registers;
 }
 
 
 Register* KeyedStoreStubCompiler::registers() {
-  // receiver, name, value, scratch1, scratch2, scratch3.
-  static Register registers[] = { rdx, rcx, rax, rbx, rdi, r8 };
+  // receiver, name, scratch1, scratch2, scratch3.
+  static Register registers[] = { rdx, rcx, rbx, rdi, r8 };
   return registers;
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm)
 
 
 void LoadStubCompiler::GenerateLoadViaGetter(MacroAssembler* masm,
                                              Handle<HeapType> type,
@@ skipping 165 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64