[interpreter] Add Interpreter{Entry,Exit}Trampoline builtins.

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 71 matching lines @@
 
 
 Node* InterpreterAssembler::RegisterFrameOffset(int index) {
   DCHECK_LE(index, kMaxRegisterIndex);
   return Int32Constant(kFirstRegisterOffsetFromFp -
                        (index << kPointerSizeLog2));
 }
 
 
 Node* InterpreterAssembler::RegisterFrameOffset(Node* index) {
-  return raw_assembler_->Int32Sub(
+  return raw_assembler_->IntPtrSub(
       Int32Constant(kFirstRegisterOffsetFromFp),
-      raw_assembler_->Word32Shl(index, Int32Constant(kPointerSizeLog2)));
+      raw_assembler_->WordShl(index, Int32Constant(kPointerSizeLog2)));
 }
 
 
 Node* InterpreterAssembler::BytecodeArg(int delta) {
   DCHECK_LT(delta, interpreter::Bytecodes::NumberOfArguments(bytecode_));
   return raw_assembler_->Load(
       kMachUint8, BytecodeArrayPointer(),
       raw_assembler_->IntPtrAdd(BytecodeOffset(), Int32Constant(1 + delta)));
 }
 
@@ skipping 15 matching lines @@
                                RegisterFrameOffset(index), value);
 }
 
 
 Node* InterpreterAssembler::StoreRegister(Node* value, Node* index) {
   return raw_assembler_->Store(kMachPtr, FramePointer(),
                                RegisterFrameOffset(index), value);
 }
 
 
+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::kInterpreterBytecodeOffsetParameter);
+  STATIC_ASSERT(1 == Linkage::kInterpreterBytecodeArrayParameter);
+  STATIC_ASSERT(2 == Linkage::kInterpreterDispatchTableParameter);
+  Node* tail_call = graph()->NewNode(
+      common()->TailCall(call_descriptor()), exit_trampoline_code_object,
+      BytecodeOffset(), BytecodeArrayPointer(), DispatchTablePointer(),
+      graph()->start(), graph()->start());
+  schedule()->AddTailCall(raw_assembler_->CurrentBlock(), tail_call);
+  // This should always be the end node.
+  SetEndInput(tail_call);
+}
+
+
 Node* InterpreterAssembler::Advance(int delta) {
   return raw_assembler_->IntPtrAdd(BytecodeOffset(), Int32Constant(delta));
 }
 
 
 void InterpreterAssembler::Dispatch() {
   Node* new_bytecode_offset = Advance(interpreter::Bytecodes::Size(bytecode_));
   Node* target_bytecode = raw_assembler_->Load(
       kMachUint8, BytecodeArrayPointer(), new_bytecode_offset);
 
   // TODO(rmcilroy): Create a code target dispatch table to avoid conversion
   // from code object on every dispatch.
   Node* target_code_object = raw_assembler_->Load(
       kMachPtr, DispatchTablePointer(),
       raw_assembler_->Word32Shl(target_bytecode,
                                 Int32Constant(kPointerSizeLog2)));
 
   // If the order of the parameters you need to change the call signature below.
   STATIC_ASSERT(0 == Linkage::kInterpreterBytecodeOffsetParameter);
   STATIC_ASSERT(1 == Linkage::kInterpreterBytecodeArrayParameter);
   STATIC_ASSERT(2 == Linkage::kInterpreterDispatchTableParameter);
   Node* tail_call = graph()->NewNode(
       common()->TailCall(call_descriptor()), target_code_object,
       new_bytecode_offset, BytecodeArrayPointer(), DispatchTablePointer(),
       graph()->start(), graph()->start());
   schedule()->AddTailCall(raw_assembler_->CurrentBlock(), tail_call);
-
   // This should always be the end node.
   SetEndInput(tail_call);
 }
 
 
 void InterpreterAssembler::SetEndInput(Node* input) {
   DCHECK(!end_node_);
   end_node_ = input;
 }
 
@@ skipping 36 matching lines @@
 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