[interpreter] Add basic framework for bytecode handler code generation.

src/compiler/raw-machine-assembler.h

 // Copyright 2014 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.
 
 #ifndef V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 #define V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_
 
+#include "src/compiler.h"

[Michael Starzinger, 2015/07/17 13:20:59]

Do we need this include here? This smells to include a lot.

[rmcilroy, 2015/07/21 11:13:21]

The reason I did this is that raw_machine_assembler.h doesn't "self host" all
it's needed header includes (raw_machine_assembler.cc didn't have the header at
the top of it's includes) and so relies on some other things which are included
by src/compiler/pipeline.h. It turns out all it needs is ExternalReference which
is defined in assembler.h, so I've changed this to be src/assembler.h.

 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-builder.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node.h"
 #include "src/compiler/operator.h"
 
-
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 class BasicBlock;
 class Schedule;
 
 
 class RawMachineAssembler : public GraphBuilder {
  public:
@@ skipping 14 matching lines @@
     bool bound_;
     friend class RawMachineAssembler;
     DISALLOW_COPY_AND_ASSIGN(Label);
   };
 
   RawMachineAssembler(Isolate* isolate, Graph* graph,
                       CallDescriptor* call_descriptor,
                       MachineType word = kMachPtr,
                       MachineOperatorBuilder::Flags flags =
                           MachineOperatorBuilder::Flag::kNoFlags);
+
   ~RawMachineAssembler() override {}
 
   Zone* zone() const { return graph()->zone(); }
   MachineOperatorBuilder* machine() { return &machine_; }
   CommonOperatorBuilder* common() { return &common_; }
   CallDescriptor* call_descriptor() const { return call_descriptor_; }
   size_t parameter_count() const { return machine_sig()->parameter_count(); }
   const MachineSignature* machine_sig() const {
     return call_descriptor_->GetMachineSignature();
   }
@@ skipping 426 matching lines @@
                        MachineType arg1_type, Node* function, Node* arg0,
                        Node* arg1);
   // Call to a C function with eight parameters.
   Node* CallCFunction8(MachineType return_type, MachineType arg0_type,
                        MachineType arg1_type, MachineType arg2_type,
                        MachineType arg3_type, MachineType arg4_type,
                        MachineType arg5_type, MachineType arg6_type,
                        MachineType arg7_type, Node* function, Node* arg0,
                        Node* arg1, Node* arg2, Node* arg3, Node* arg4,
                        Node* arg5, Node* arg6, Node* arg7);
+  Node* CallInterpreterHandler(Node* target_handler,
+                         Node* bytecodes,
+                         Node* dispatch_table);
   void Return(Node* value);
   void Bind(Label* label);
   void Deoptimize(Node* state);
 
   // Variables.
   Node* Phi(MachineType type, Node* n1, Node* n2) {
     return NewNode(common()->Phi(type, 2), n1, n2);
   }
   Node* Phi(MachineType type, Node* n1, Node* n2, Node* n3) {
     return NewNode(common()->Phi(type, 3), n1, n2, n3);
   }
   Node* Phi(MachineType type, Node* n1, Node* n2, Node* n3, Node* n4) {
     return NewNode(common()->Phi(type, 4), n1, n2, n3, n4);
   }
 
   // MachineAssembler is invalid after export.
   Schedule* Export();
 
+  Schedule* schedule() {
+    DCHECK(ScheduleValid());
+    return schedule_;
+  }
+
+  BasicBlock* CurrentBlock();
+
  protected:
   Node* MakeNode(const Operator* op, int input_count, Node** inputs,
                  bool incomplete) final;
 
   bool ScheduleValid() { return schedule_ != NULL; }
 
-  Schedule* schedule() {
-    DCHECK(ScheduleValid());
-    return schedule_;
-  }
-
  private:
   BasicBlock* Use(Label* label);
   BasicBlock* EnsureBlock(Label* label);
-  BasicBlock* CurrentBlock();
 
   Schedule* schedule_;
   MachineOperatorBuilder machine_;
   CommonOperatorBuilder common_;
   CallDescriptor* call_descriptor_;
   Node** parameters_;
   BasicBlock* current_block_;
 
   DISALLOW_COPY_AND_ASSIGN(RawMachineAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_