[Interpreter] Add implementations for load immediate bytecodes.

src/compiler/interpreter-assembler.cc

 // Copyright 2015 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/compiler/interpreter-assembler.h"
 
 #include <ostream>
 
 #include "src/compiler/graph.h"
 #include "src/compiler/instruction-selector.h"
@@ skipping 92 matching lines @@
                               RegisterFrameOffset(reg_index));
 }
 
 
 Node* InterpreterAssembler::StoreRegister(Node* value, Node* reg_index) {
   return raw_assembler_->Store(kMachPtr, RegisterFileRawPointer(),
                                RegisterFrameOffset(reg_index), value);
 }
 
 
-Node* InterpreterAssembler::BytecodeOperand(int delta) {
-  DCHECK_LT(delta, interpreter::Bytecodes::NumberOfOperands(bytecode_));
+Node* InterpreterAssembler::BytecodeOperand(int operand_index) {
+  DCHECK_LT(operand_index, interpreter::Bytecodes::NumberOfOperands(bytecode_));
   return raw_assembler_->Load(
       kMachUint8, BytecodeArrayTaggedPointer(),
-      raw_assembler_->IntPtrAdd(BytecodeOffset(), Int32Constant(1 + delta)));
+      raw_assembler_->IntPtrAdd(BytecodeOffset(),
+                                Int32Constant(1 + operand_index)));
 }
 
 
-Node* InterpreterAssembler::BytecodeOperandSignExtended(int delta) {
-  DCHECK_LT(delta, interpreter::Bytecodes::NumberOfOperands(bytecode_));
+Node* InterpreterAssembler::BytecodeOperandSignExtended(int operand_index) {
+  DCHECK_LT(operand_index, interpreter::Bytecodes::NumberOfOperands(bytecode_));
   Node* load = raw_assembler_->Load(
       kMachInt8, BytecodeArrayTaggedPointer(),
-      raw_assembler_->IntPtrAdd(BytecodeOffset(), Int32Constant(1 + delta)));
+      raw_assembler_->IntPtrAdd(BytecodeOffset(),
+                                Int32Constant(1 + operand_index)));
   // Ensure that we sign extend to full pointer size
   if (kPointerSize == 8) {
     load = raw_assembler_->ChangeInt32ToInt64(load);
   }
   return load;
 }
 
 
+Node* InterpreterAssembler::BytecodeOperandImm8(int operand_index) {
+  DCHECK_EQ(interpreter::OperandType::kImm8,
+            interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
+  return BytecodeOperandSignExtended(operand_index);
+}
+
+
+Node* InterpreterAssembler::BytecodeOperandReg(int operand_index) {
+  DCHECK_EQ(interpreter::OperandType::kReg,
+            interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
+  return BytecodeOperandSignExtended(operand_index);
+}
+
+
+Node* InterpreterAssembler::Int32Constant(int value) {
+  return raw_assembler_->Int32Constant(value);
+}
+
+
+Node* InterpreterAssembler::NumberConstant(double value) {
+  return raw_assembler_->NumberConstant(value);
+}
+
+
+Node* InterpreterAssembler::HeapConstant(Unique<HeapObject> object) {
+  return raw_assembler_->HeapConstant(object);
+}
+
+
+Node* InterpreterAssembler::SmiShiftBitsConstant() {
+  return Int32Constant(kSmiShiftSize + kSmiTagSize);
+}
+
+
+Node* InterpreterAssembler::SmiTag(Node* value) {
+  return raw_assembler_->WordShl(value, SmiShiftBitsConstant());
+}
+
+
+Node* InterpreterAssembler::SmiUntag(Node* value) {
+  return raw_assembler_->WordSar(value, SmiShiftBitsConstant());
+}
+
+
 void InterpreterAssembler::Return() {
   Node* exit_trampoline_code_object =
       HeapConstant(Unique<HeapObject>::CreateImmovable(
           isolate()->builtins()->InterpreterExitTrampoline()));
   // If the order of the parameters you need to change the call signature below.
   STATIC_ASSERT(0 == Linkage::kInterpreterAccumulatorParameter);
   STATIC_ASSERT(1 == Linkage::kInterpreterRegisterFileParameter);
   STATIC_ASSERT(2 == Linkage::kInterpreterBytecodeOffsetParameter);
   STATIC_ASSERT(3 == Linkage::kInterpreterBytecodeArrayParameter);
   STATIC_ASSERT(4 == Linkage::kInterpreterDispatchTableParameter);
@@ skipping 62 matching lines @@
 CallDescriptor* InterpreterAssembler::call_descriptor() const {
   return raw_assembler_->call_descriptor();
 }
 
 
 Schedule* InterpreterAssembler::schedule() {
   return raw_assembler_->schedule();
 }
 
 
-Node* InterpreterAssembler::Int32Constant(int value) {
-  return raw_assembler_->Int32Constant(value);
-}
-
-
-Node* InterpreterAssembler::NumberConstant(double value) {
-  return raw_assembler_->NumberConstant(value);
-}
-
-
-Node* InterpreterAssembler::HeapConstant(Unique<HeapObject> object) {
-  return raw_assembler_->HeapConstant(object);
-}
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8