[turbofan] Hide dangerous RawMachineAssembler accessors.

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/assembler.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
@@ skipping 38 matching lines @@
 
   RawMachineAssembler(Isolate* isolate, Graph* graph,
                       CallDescriptor* call_descriptor,
                       MachineType word = kMachPtr,
                       MachineOperatorBuilder::Flags flags =
                           MachineOperatorBuilder::Flag::kNoFlags);
   ~RawMachineAssembler() {}
 
   Isolate* isolate() const { return isolate_; }
   Graph* graph() const { return graph_; }
-  Schedule* schedule() { return schedule_; }
   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();
-  }
 
   // Finalizes the schedule and exports it to be used for code generation. Note
   // that this RawMachineAssembler becomes invalid after export.
   Schedule* Export();
 
   // ===========================================================================
   // The following utility methods create new nodes with specific operators and
   // place them into the current basic block. They don't perform control flow,
   // hence will not switch the current basic block.
 
@@ skipping 533 matching lines @@
     Node* buffer[] = {n1, args...};
     return AddNode(op, sizeof...(args) + 1, buffer);
   }
 
  private:
   Node* MakeNode(const Operator* op, int input_count, Node** inputs);
   BasicBlock* Use(Label* label);
   BasicBlock* EnsureBlock(Label* label);
   BasicBlock* CurrentBlock();
 
+  Schedule* schedule() { return schedule_; }
+  size_t parameter_count() const { return machine_sig()->parameter_count(); }
+  const MachineSignature* machine_sig() const {
+    return call_descriptor_->GetMachineSignature();
+  }
+
   Isolate* isolate_;
   Graph* graph_;
   Schedule* schedule_;
   MachineOperatorBuilder machine_;
   CommonOperatorBuilder common_;
   CallDescriptor* call_descriptor_;
   NodeVector parameters_;
   BasicBlock* current_block_;
 
   DISALLOW_COPY_AND_ASSIGN(RawMachineAssembler);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_RAW_MACHINE_ASSEMBLER_H_