[turbofan] Cleanup Schedule and related classes.

test/cctest/compiler/test-schedule.cc

-// Copyright 2013 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/compiler/common-operator.h"
-#include "src/compiler/graph.h"
-#include "src/compiler/machine-operator.h"
-#include "src/compiler/node.h"
-#include "src/compiler/operator.h"
-#include "src/compiler/schedule.h"
-#include "test/cctest/cctest.h"
-
-using namespace v8::internal;
-using namespace v8::internal::compiler;
-
-static Operator dummy_operator(IrOpcode::kParameter, Operator::kNoWrite,
-                               "dummy", 0, 0, 0, 0, 0, 0);
-
-TEST(TestScheduleAllocation) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-
-  CHECK_NE(NULL, schedule.start());
-  CHECK_EQ(schedule.start(), schedule.GetBlockById(BasicBlock::Id::FromInt(0)));
-}
-
-
-TEST(TestScheduleAddNode) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  Node* n0 = graph.NewNode(&dummy_operator);
-  Node* n1 = graph.NewNode(&dummy_operator);
-
-  BasicBlock* entry = schedule.start();
-  schedule.AddNode(entry, n0);
-  schedule.AddNode(entry, n1);
-
-  CHECK_EQ(entry, schedule.block(n0));
-  CHECK_EQ(entry, schedule.block(n1));
-  CHECK(schedule.SameBasicBlock(n0, n1));
-
-  Node* n2 = graph.NewNode(&dummy_operator);
-  CHECK_EQ(NULL, schedule.block(n2));
-}
-
-
-TEST(TestScheduleAddGoto) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-
-  BasicBlock* entry = schedule.start();
-  BasicBlock* next = schedule.NewBasicBlock();
-
-  schedule.AddGoto(entry, next);
-
-  CHECK_EQ(0, static_cast<int>(entry->PredecessorCount()));
-  CHECK_EQ(1, static_cast<int>(entry->SuccessorCount()));
-  CHECK_EQ(next, entry->SuccessorAt(0));
-
-  CHECK_EQ(1, static_cast<int>(next->PredecessorCount()));
-  CHECK_EQ(entry, next->PredecessorAt(0));
-  CHECK_EQ(0, static_cast<int>(next->SuccessorCount()));
-}
-
-
-TEST(TestScheduleAddBranch) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  CommonOperatorBuilder common(scope.main_zone());
-  Node* n0 = graph.NewNode(&dummy_operator);
-  Node* b = graph.NewNode(common.Branch(), n0);
-
-  BasicBlock* entry = schedule.start();
-  BasicBlock* tblock = schedule.NewBasicBlock();
-  BasicBlock* fblock = schedule.NewBasicBlock();
-
-  schedule.AddBranch(entry, b, tblock, fblock);
-
-  CHECK_EQ(0, static_cast<int>(entry->PredecessorCount()));
-  CHECK_EQ(2, static_cast<int>(entry->SuccessorCount()));
-  CHECK_EQ(tblock, entry->SuccessorAt(0));
-  CHECK_EQ(fblock, entry->SuccessorAt(1));
-
-  CHECK_EQ(1, static_cast<int>(tblock->PredecessorCount()));
-  CHECK_EQ(entry, tblock->PredecessorAt(0));
-  CHECK_EQ(0, static_cast<int>(tblock->SuccessorCount()));
-
-  CHECK_EQ(1, static_cast<int>(fblock->PredecessorCount()));
-  CHECK_EQ(entry, fblock->PredecessorAt(0));
-  CHECK_EQ(0, static_cast<int>(fblock->SuccessorCount()));
-}
-
-
-TEST(TestScheduleAddReturn) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  Node* n0 = graph.NewNode(&dummy_operator);
-  BasicBlock* entry = schedule.start();
-  schedule.AddReturn(entry, n0);
-
-  CHECK_EQ(0, static_cast<int>(entry->PredecessorCount()));
-  CHECK_EQ(1, static_cast<int>(entry->SuccessorCount()));
-  CHECK_EQ(schedule.end(), entry->SuccessorAt(0));
-}
-
-
-TEST(TestScheduleAddThrow) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  Node* n0 = graph.NewNode(&dummy_operator);
-  BasicBlock* entry = schedule.start();
-  schedule.AddThrow(entry, n0);
-
-  CHECK_EQ(0, static_cast<int>(entry->PredecessorCount()));
-  CHECK_EQ(1, static_cast<int>(entry->SuccessorCount()));
-  CHECK_EQ(schedule.end(), entry->SuccessorAt(0));
-}
-
-
-TEST(TestScheduleInsertBranch) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  CommonOperatorBuilder common(scope.main_zone());
-  Node* n0 = graph.NewNode(&dummy_operator);
-  Node* n1 = graph.NewNode(&dummy_operator);
-  Node* b = graph.NewNode(common.Branch(), n1);
-
-  BasicBlock* entry = schedule.start();
-  BasicBlock* tblock = schedule.NewBasicBlock();
-  BasicBlock* fblock = schedule.NewBasicBlock();
-  BasicBlock* merge = schedule.NewBasicBlock();
-  schedule.AddReturn(entry, n0);
-  schedule.AddGoto(tblock, merge);
-  schedule.AddGoto(fblock, merge);
-
-  schedule.InsertBranch(entry, merge, b, tblock, fblock);
-
-  CHECK_EQ(0, static_cast<int>(entry->PredecessorCount()));
-  CHECK_EQ(2, static_cast<int>(entry->SuccessorCount()));
-  CHECK_EQ(tblock, entry->SuccessorAt(0));
-  CHECK_EQ(fblock, entry->SuccessorAt(1));
-
-  CHECK_EQ(2, static_cast<int>(merge->PredecessorCount()));
-  CHECK_EQ(1, static_cast<int>(merge->SuccessorCount()));
-  CHECK_EQ(schedule.end(), merge->SuccessorAt(0));
-
-  CHECK_EQ(1, static_cast<int>(schedule.end()->PredecessorCount()));
-  CHECK_EQ(0, static_cast<int>(schedule.end()->SuccessorCount()));
-  CHECK_EQ(merge, schedule.end()->PredecessorAt(0));
-}
-
-
-TEST(BuildMulNodeGraph) {
-  HandleAndZoneScope scope;
-  Schedule schedule(scope.main_zone());
-  Graph graph(scope.main_zone());
-  CommonOperatorBuilder common(scope.main_zone());
-  // TODO(titzer): use test operators.
-  MachineOperatorBuilder machine(scope.main_zone());
-
-  Node* start = graph.NewNode(common.Start(0));
-  graph.SetStart(start);
-  Node* param0 = graph.NewNode(common.Parameter(0), graph.start());
-  Node* param1 = graph.NewNode(common.Parameter(1), graph.start());
-
-  Node* mul = graph.NewNode(machine.Int32Mul(), param0, param1);
-  Node* ret = graph.NewNode(common.Return(), mul, start);
-
-  USE(ret);
-}