[Interpreter] Use RegisterList for kRegTriple and kRegPair operands.

src/interpreter/bytecode-array-builder.h

 // 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.
 
 #ifndef V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-writer.h"
 #include "src/interpreter/bytecode-register-allocator.h"
@@ skipping 187 matching lines @@
   BytecodeArrayBuilder& CallRuntime(Runtime::FunctionId function_id,
                                     RegisterList args);
   // Call the runtime function with |function_id| with single argument |arg|.
   BytecodeArrayBuilder& CallRuntime(Runtime::FunctionId function_id,
                                     Register arg);
   // Call the runtime function with |function_id| with no arguments.
   BytecodeArrayBuilder& CallRuntime(Runtime::FunctionId function_id);
 
   // Call the runtime function with |function_id| and arguments |args|, that
   // returns a pair of values. The return values will be returned in
-  // <first_return> and <first_return + 1>.
+  // |return_pair|.
   BytecodeArrayBuilder& CallRuntimeForPair(Runtime::FunctionId function_id,
                                            RegisterList args,
-                                           Register first_return);
-  // Call the runtime function with |function_id| with single argument |arg|.
+                                           RegisterList return_pair);
+  // Call the runtime function with |function_id| with single argument |arg|
+  // that returns a pair of values. The return values will be returned in
+  // |return_pair|.
   BytecodeArrayBuilder& CallRuntimeForPair(Runtime::FunctionId function_id,
-                                           Register arg, Register first_return);
+                                           Register arg,
+                                           RegisterList return_pair);
 
   // Call the JS runtime function with |context_index| and arguments |args|.
   BytecodeArrayBuilder& CallJSRuntime(int context_index, RegisterList args);
 
   // Operators (register holds the lhs value, accumulator holds the rhs value).
   // Type feedback will be recorded in the |feedback_slot|
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg,
                                         int feedback_slot);
 
   // Count Operators (value stored in accumulator).
@@ skipping 33 matching lines @@
 
   BytecodeArrayBuilder& Throw();
   BytecodeArrayBuilder& ReThrow();
   BytecodeArrayBuilder& Return();
 
   // Debugger.
   BytecodeArrayBuilder& Debugger();
 
   // Complex flow control.
   BytecodeArrayBuilder& ForInPrepare(Register receiver,
-                                     Register cache_info_triple);
+                                     RegisterList cache_info_triple);
   BytecodeArrayBuilder& ForInContinue(Register index, Register cache_length);
   BytecodeArrayBuilder& ForInNext(Register receiver, Register index,
-                                  Register cache_type_array_pair,
+                                  RegisterList cache_type_array_pair,
                                   int feedback_slot);
   BytecodeArrayBuilder& ForInStep(Register index);
 
   // Generators.
   BytecodeArrayBuilder& SuspendGenerator(Register generator);
   BytecodeArrayBuilder& ResumeGenerator(Register generator);
 
   // Exception handling.
   BytecodeArrayBuilder& MarkHandler(int handler_id,
                                     HandlerTable::CatchPrediction will_catch);
@@ skipping 123 matching lines @@
   static int const kNoFeedbackSlot = 0;
 
   DISALLOW_COPY_AND_ASSIGN(BytecodeArrayBuilder);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_