[interpreter]: Update BytecodeArrayBuilder register handling.

test/cctest/interpreter/test-bytecode-array-builder.cc

-// 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.
-
-#include "src/v8.h"
-
-#include "src/interpreter/bytecode-array-builder.h"
-#include "test/cctest/cctest.h"
-
-using namespace v8::internal;
-using namespace v8::internal::interpreter;
-
-TEST(AllBytecodesGenerated) {
-  InitializedHandleScope handle_scope;
-  BytecodeArrayBuilder builder(handle_scope.main_isolate());
-
-  builder.set_locals_count(1);
-  CHECK_EQ(builder.locals_count(), 1);
-
-  // Emit constant loads.
-  builder.LoadLiteral(Smi::FromInt(0))
-      .LoadLiteral(Smi::FromInt(8))
-      .LoadUndefined()
-      .LoadNull()
-      .LoadTheHole()
-      .LoadTrue()
-      .LoadFalse();
-
-  // Emit accumulator transfers.
-  builder.LoadAccumulatorWithRegister(0).StoreAccumulatorInRegister(0);
-
-  // Emit binary operators invocations.
-  builder.BinaryOperation(Token::Value::ADD, 0)
-      .BinaryOperation(Token::Value::SUB, 0)
-      .BinaryOperation(Token::Value::MUL, 0)
-      .BinaryOperation(Token::Value::DIV, 0);
-
-  // Emit control flow. Return must be the last instruction.
-  builder.Return();
-
-  // Generate BytecodeArray.
-  Handle<BytecodeArray> the_array = builder.ToBytecodeArray();
-  CHECK_EQ(the_array->frame_size(), builder.locals_count() * kPointerSize);
-
-  // Build scorecard of bytecodes encountered in the BytecodeArray.
-  std::vector<int> scorecard(Bytecodes::ToByte(Bytecode::kLast) + 1);
-  Bytecode final_bytecode = Bytecode::kLdaZero;
-  for (int i = 0; i < the_array->length(); i++) {
-    uint8_t code = the_array->get(i);
-    scorecard[code] += 1;
-    int operands = Bytecodes::NumberOfOperands(Bytecodes::FromByte(code));
-    CHECK_LE(operands, Bytecodes::MaximumNumberOfOperands());
-    final_bytecode = Bytecodes::FromByte(code);
-    i += operands;
-  }
-
-  // Check return occurs at the end and only once in the BytecodeArray.
-  CHECK_EQ(final_bytecode, Bytecode::kReturn);
-  CHECK_EQ(scorecard[Bytecodes::ToByte(final_bytecode)], 1);
-
-#define CHECK_BYTECODE_PRESENT(Name, ...)     \
-  /* Check Bytecode is marked in scorecard */ \
-  CHECK_GE(scorecard[Bytecodes::ToByte(Bytecode::k##Name)], 1);
-  BYTECODE_LIST(CHECK_BYTECODE_PRESENT)
-#undef CHECK_BYTECODE_PRESENT
-}
-
-
-TEST(FrameSizesLookGood) {
-  for (int locals = 0; locals < 5; locals++) {
-    for (int temps = 0; temps < 3; temps++) {
-      InitializedHandleScope handle_scope;
-      BytecodeArrayBuilder builder(handle_scope.main_isolate());
-      builder.set_locals_count(locals);
-      builder.Return();
-
-      TemporaryRegisterScope temporaries(&builder);
-      for (int i = 0; i < temps; i++) {
-        temporaries.NewRegister();
-      }
-
-      Handle<BytecodeArray> the_array = builder.ToBytecodeArray();
-      int total_registers = locals + temps;
-      CHECK_EQ(the_array->frame_size(), total_registers * kPointerSize);
-    }
-  }
-}
-
-
-TEST(TemporariesRecycled) {
-  InitializedHandleScope handle_scope;
-  BytecodeArrayBuilder builder(handle_scope.main_isolate());
-  builder.set_locals_count(0);
-  builder.Return();
-
-  int first;
-  {
-    TemporaryRegisterScope temporaries(&builder);
-    first = temporaries.NewRegister();
-    temporaries.NewRegister();
-    temporaries.NewRegister();
-    temporaries.NewRegister();
-  }
-
-  int second;
-  {
-    TemporaryRegisterScope temporaries(&builder);
-    second = temporaries.NewRegister();
-  }
-
-  CHECK_EQ(first, second);
-}