[interpreter] Add support for scalable operands.

test/unittests/interpreter/bytecode-array-iterator-unittest.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/v8.h"
 
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "test/unittests/test-utils.h"
 
@@ skipping 15 matching lines @@
   Factory* factory = isolate()->factory();
   Handle<HeapObject> heap_num_0 = factory->NewHeapNumber(2.718);
   Handle<HeapObject> heap_num_1 = factory->NewHeapNumber(2147483647);
   Smi* zero = Smi::FromInt(0);
   Smi* smi_0 = Smi::FromInt(64);
   Smi* smi_1 = Smi::FromInt(-65536);
   Register reg_0(0);
   Register reg_1(1);
   Register reg_2 = Register::FromParameterIndex(2, builder.parameter_count());
   Handle<String> name = factory->NewStringFromStaticChars("abc");
-  int name_index = 3;
+  int name_index = 2;
   int feedback_slot = 97;
 
   builder.LoadLiteral(heap_num_0)
       .LoadLiteral(heap_num_1)
       .LoadLiteral(zero)
       .LoadLiteral(smi_0)
       .LoadLiteral(smi_1)
       .LoadAccumulatorWithRegister(reg_0)
       .LoadNamedProperty(reg_1, name, feedback_slot)
       .StoreAccumulatorInRegister(reg_2)
       .CallRuntime(Runtime::kLoadIC_Miss, reg_0, 1)
       .Debugger()
+      .LoadGlobal(name, 0x10000000, TypeofMode::NOT_INSIDE_TYPEOF)
       .Return();
 
   // Test iterator sees the expected output from the builder.
   BytecodeArrayIterator iterator(builder.ToBytecodeArray());
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_0));
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(iterator.GetConstantForIndexOperand(0).is_identical_to(heap_num_1));
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaZero);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(!iterator.done());
   iterator.Advance();
 
-  CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaSmi8);
+  CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaSmi);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(Smi::FromInt(iterator.GetImmediateOperand(0)), smi_0);
   CHECK(!iterator.done());
   iterator.Advance();
 
-  CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaConstant);
-  CHECK_EQ(*iterator.GetConstantForIndexOperand(0), smi_1);
+  CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaSmi);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kQuadruple);
+  CHECK_EQ(Smi::FromInt(iterator.GetImmediateOperand(0)), smi_1);
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdar);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_0.index());
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLoadIC);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_1.index());
   CHECK_EQ(iterator.GetIndexOperand(1), name_index);
   CHECK_EQ(iterator.GetIndexOperand(2), feedback_slot);
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kStar);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_2.index());
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kCallRuntime);
-  CHECK_EQ(static_cast<Runtime::FunctionId>(iterator.GetIndexOperand(0)),
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
+  CHECK_EQ(static_cast<Runtime::FunctionId>(iterator.GetRuntimeIdOperand(0)),
            Runtime::kLoadIC_Miss);
   CHECK_EQ(iterator.GetRegisterOperand(1).index(), reg_0.index());
   CHECK_EQ(iterator.GetRegisterCountOperand(2), 1);
   CHECK(!iterator.done());
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kDebugger);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(!iterator.done());
   iterator.Advance();
 
+  CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaGlobal);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kQuadruple);
+  CHECK_EQ(iterator.current_bytecode_size(), 10);
+  CHECK_EQ(iterator.GetIndexOperand(1), 0x10000000);
+  iterator.Advance();
+
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
+  CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(!iterator.done());
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8