[Interpreter] Use RegisterList for kRegTriple and kRegPair operands.

src/interpreter/bytecode-array-builder.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/interpreter/bytecode-array-builder.h"
 
 #include "src/globals.h"
 #include "src/interpreter/bytecode-array-writer.h"
 #include "src/interpreter/bytecode-dead-code-optimizer.h"
 #include "src/interpreter/bytecode-label.h"
@@ skipping 634 matching lines @@
   return_seen_in_block_ = true;
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::Debugger() {
   Output(Bytecode::kDebugger);
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInPrepare(
-    Register receiver, Register cache_info_triple) {
+    Register receiver, RegisterList cache_info_triple) {
+  DCHECK_EQ(3, cache_info_triple.register_count());
   Output(Bytecode::kForInPrepare, RegisterOperand(receiver),
-         RegisterOperand(cache_info_triple));
+         RegisterOperand(cache_info_triple.first_register()));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInContinue(
     Register index, Register cache_length) {
   Output(Bytecode::kForInContinue, RegisterOperand(index),
          RegisterOperand(cache_length));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInNext(
-    Register receiver, Register index, Register cache_type_array_pair,
+    Register receiver, Register index, RegisterList cache_type_array_pair,
     int feedback_slot) {
+  DCHECK_EQ(2, cache_type_array_pair.register_count());
   Output(Bytecode::kForInNext, RegisterOperand(receiver),
-         RegisterOperand(index), RegisterOperand(cache_type_array_pair),
+         RegisterOperand(index),
+         RegisterOperand(cache_type_array_pair.first_register()),
          UnsignedOperand(feedback_slot));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInStep(Register index) {
   Output(Bytecode::kForInStep, RegisterOperand(index));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::SuspendGenerator(
@@ skipping 84 matching lines @@
     Runtime::FunctionId function_id, Register arg) {
   return CallRuntime(function_id, RegisterList(arg.index(), 1));
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntime(
     Runtime::FunctionId function_id) {
   return CallRuntime(function_id, RegisterList());
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntimeForPair(
-    Runtime::FunctionId function_id, RegisterList args, Register first_return) {
+    Runtime::FunctionId function_id, RegisterList args,
+    RegisterList return_pair) {
   DCHECK_EQ(2, Runtime::FunctionForId(function_id)->result_size);
   DCHECK(Bytecodes::SizeForUnsignedOperand(function_id) <= OperandSize::kShort);
+  DCHECK_EQ(2, return_pair.register_count());
   Output(Bytecode::kCallRuntimeForPair, static_cast<uint16_t>(function_id),
          RegisterOperand(args.first_register()),
-         UnsignedOperand(args.register_count()), RegisterOperand(first_return));
+         UnsignedOperand(args.register_count()),
+         RegisterOperand(return_pair.first_register()));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntimeForPair(
-    Runtime::FunctionId function_id, Register arg, Register first_return) {
+    Runtime::FunctionId function_id, Register arg, RegisterList return_pair) {
   return CallRuntimeForPair(function_id, RegisterList(arg.index(), 1),
-                            first_return);
+                            return_pair);
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallJSRuntime(int context_index,
                                                           RegisterList args) {
   Output(Bytecode::kCallJSRuntime, UnsignedOperand(context_index),
          RegisterOperand(args.first_register()),
          UnsignedOperand(args.register_count()));
   return *this;
 }
 
@@ skipping 124 matching lines @@
         UNREACHABLE();  // Dealt with in kRegList above.
     }
   }
 
   return true;
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8