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Unified Diff: test/unittests/compiler/scheduler-unittest.cc

Issue 1691373002: Move RPO unittests into their own file. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 10 months ago
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Index: test/unittests/compiler/scheduler-unittest.cc
diff --git a/test/unittests/compiler/scheduler-unittest.cc b/test/unittests/compiler/scheduler-unittest.cc
index 523c8ce9d4b59fd7e063b3afd1d00dbc411d850e..6cf07345a2b6d82fa449fc3278beea4202a063d7 100644
--- a/test/unittests/compiler/scheduler-unittest.cc
+++ b/test/unittests/compiler/scheduler-unittest.cc
@@ -71,67 +71,6 @@ class SchedulerTest : public TestWithIsolateAndZone {
};
-class SchedulerRPOTest : public SchedulerTest {
- public:
- SchedulerRPOTest() {}
-
- // TODO(titzer): pull RPO tests out to their own file.
- void CheckRPONumbers(BasicBlockVector* order, size_t expected,
- bool loops_allowed) {
- CHECK(expected == order->size());
- for (int i = 0; i < static_cast<int>(order->size()); i++) {
- CHECK(order->at(i)->rpo_number() == i);
- if (!loops_allowed) {
- CHECK(!order->at(i)->loop_end());
- CHECK(!order->at(i)->loop_header());
- }
- }
- }
-
- void CheckLoop(BasicBlockVector* order, BasicBlock** blocks, int body_size) {
- BasicBlock* header = blocks[0];
- BasicBlock* end = header->loop_end();
- CHECK(end);
- CHECK_GT(end->rpo_number(), 0);
- CHECK_EQ(body_size, end->rpo_number() - header->rpo_number());
- for (int i = 0; i < body_size; i++) {
- CHECK_GE(blocks[i]->rpo_number(), header->rpo_number());
- CHECK_LT(blocks[i]->rpo_number(), end->rpo_number());
- CHECK(header->LoopContains(blocks[i]));
- CHECK(header->IsLoopHeader() || blocks[i]->loop_header() == header);
- }
- if (header->rpo_number() > 0) {
- CHECK_NE(order->at(header->rpo_number() - 1)->loop_header(), header);
- }
- if (end->rpo_number() < static_cast<int>(order->size())) {
- CHECK_NE(order->at(end->rpo_number())->loop_header(), header);
- }
- }
-
- struct TestLoop {
- int count;
- BasicBlock** nodes;
- BasicBlock* header() { return nodes[0]; }
- BasicBlock* last() { return nodes[count - 1]; }
- ~TestLoop() { delete[] nodes; }
- };
-
- TestLoop* CreateLoop(Schedule* schedule, int count) {
- TestLoop* loop = new TestLoop();
- loop->count = count;
- loop->nodes = new BasicBlock* [count];
- for (int i = 0; i < count; i++) {
- loop->nodes[i] = schedule->NewBasicBlock();
- if (i > 0) {
- schedule->AddSuccessorForTesting(loop->nodes[i - 1], loop->nodes[i]);
- }
- }
- schedule->AddSuccessorForTesting(loop->nodes[count - 1], loop->nodes[0]);
- return loop;
- }
-};
-
-
namespace {
const Operator kHeapConstant(IrOpcode::kHeapConstant, Operator::kPure,
@@ -146,491 +85,6 @@ const Operator kMockTailCall(IrOpcode::kTailCall, Operator::kNoProperties,
} // namespace
-// -----------------------------------------------------------------------------
-// Special reverse-post-order block ordering.
-
-
-TEST_F(SchedulerRPOTest, Degenerate1) {
- Schedule schedule(zone());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 1, false);
- EXPECT_EQ(schedule.start(), order->at(0));
-}
-
-
-TEST_F(SchedulerRPOTest, Degenerate2) {
- Schedule schedule(zone());
-
- schedule.AddGoto(schedule.start(), schedule.end());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 2, false);
- EXPECT_EQ(schedule.start(), order->at(0));
- EXPECT_EQ(schedule.end(), order->at(1));
-}
-
-
-TEST_F(SchedulerRPOTest, Line) {
- for (int i = 0; i < 10; i++) {
- Schedule schedule(zone());
-
- BasicBlock* last = schedule.start();
- for (int j = 0; j < i; j++) {
- BasicBlock* block = schedule.NewBasicBlock();
- block->set_deferred(i & 1);
- schedule.AddGoto(last, block);
- last = block;
- }
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 1 + i, false);
-
- for (size_t i = 0; i < schedule.BasicBlockCount(); i++) {
- BasicBlock* block = schedule.GetBlockById(BasicBlock::Id::FromSize(i));
- if (block->rpo_number() >= 0 && block->SuccessorCount() == 1) {
- EXPECT_EQ(block->rpo_number() + 1, block->SuccessorAt(0)->rpo_number());
- }
- }
- }
-}
-
-
-TEST_F(SchedulerRPOTest, SelfLoop) {
- Schedule schedule(zone());
- schedule.AddSuccessorForTesting(schedule.start(), schedule.start());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 1, true);
- BasicBlock* loop[] = {schedule.start()};
- CheckLoop(order, loop, 1);
-}
-
-
-TEST_F(SchedulerRPOTest, EntryLoop) {
- Schedule schedule(zone());
- BasicBlock* body = schedule.NewBasicBlock();
- schedule.AddSuccessorForTesting(schedule.start(), body);
- schedule.AddSuccessorForTesting(body, schedule.start());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 2, true);
- BasicBlock* loop[] = {schedule.start(), body};
- CheckLoop(order, loop, 2);
-}
-
-
-TEST_F(SchedulerRPOTest, EndLoop) {
- Schedule schedule(zone());
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, 2));
- schedule.AddSuccessorForTesting(schedule.start(), loop1->header());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 3, true);
- CheckLoop(order, loop1->nodes, loop1->count);
-}
-
-
-TEST_F(SchedulerRPOTest, EndLoopNested) {
- Schedule schedule(zone());
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, 2));
- schedule.AddSuccessorForTesting(schedule.start(), loop1->header());
- schedule.AddSuccessorForTesting(loop1->last(), schedule.start());
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 3, true);
- CheckLoop(order, loop1->nodes, loop1->count);
-}
-
-
-TEST_F(SchedulerRPOTest, Diamond) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(A, C);
- schedule.AddSuccessorForTesting(B, D);
- schedule.AddSuccessorForTesting(C, D);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 4, false);
-
- EXPECT_EQ(0, A->rpo_number());
- EXPECT_THAT(B->rpo_number(), AnyOf(1, 2));
- EXPECT_THAT(C->rpo_number(), AnyOf(1, 2));
- EXPECT_EQ(3, D->rpo_number());
-}
-
-
-TEST_F(SchedulerRPOTest, Loop1) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(C, B);
- schedule.AddSuccessorForTesting(C, D);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 4, true);
- BasicBlock* loop[] = {B, C};
- CheckLoop(order, loop, 2);
-}
-
-
-TEST_F(SchedulerRPOTest, Loop2) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(C, B);
- schedule.AddSuccessorForTesting(B, D);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 4, true);
- BasicBlock* loop[] = {B, C};
- CheckLoop(order, loop, 2);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopN) {
- for (int i = 0; i < 11; i++) {
- Schedule schedule(zone());
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.NewBasicBlock();
- BasicBlock* E = schedule.NewBasicBlock();
- BasicBlock* F = schedule.NewBasicBlock();
- BasicBlock* G = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(C, D);
- schedule.AddSuccessorForTesting(D, E);
- schedule.AddSuccessorForTesting(E, F);
- schedule.AddSuccessorForTesting(F, B);
- schedule.AddSuccessorForTesting(B, G);
-
- // Throw in extra backedges from time to time.
- if (i == 1) schedule.AddSuccessorForTesting(B, B);
- if (i == 2) schedule.AddSuccessorForTesting(C, B);
- if (i == 3) schedule.AddSuccessorForTesting(D, B);
- if (i == 4) schedule.AddSuccessorForTesting(E, B);
- if (i == 5) schedule.AddSuccessorForTesting(F, B);
-
- // Throw in extra loop exits from time to time.
- if (i == 6) schedule.AddSuccessorForTesting(B, G);
- if (i == 7) schedule.AddSuccessorForTesting(C, G);
- if (i == 8) schedule.AddSuccessorForTesting(D, G);
- if (i == 9) schedule.AddSuccessorForTesting(E, G);
- if (i == 10) schedule.AddSuccessorForTesting(F, G);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 7, true);
- BasicBlock* loop[] = {B, C, D, E, F};
- CheckLoop(order, loop, 5);
- }
-}
-
-
-TEST_F(SchedulerRPOTest, LoopNest1) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.NewBasicBlock();
- BasicBlock* E = schedule.NewBasicBlock();
- BasicBlock* F = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(C, D);
- schedule.AddSuccessorForTesting(D, C);
- schedule.AddSuccessorForTesting(D, E);
- schedule.AddSuccessorForTesting(E, B);
- schedule.AddSuccessorForTesting(E, F);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 6, true);
- BasicBlock* loop1[] = {B, C, D, E};
- CheckLoop(order, loop1, 4);
-
- BasicBlock* loop2[] = {C, D};
- CheckLoop(order, loop2, 2);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopNest2) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.NewBasicBlock();
- BasicBlock* E = schedule.NewBasicBlock();
- BasicBlock* F = schedule.NewBasicBlock();
- BasicBlock* G = schedule.NewBasicBlock();
- BasicBlock* H = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(C, D);
- schedule.AddSuccessorForTesting(D, E);
- schedule.AddSuccessorForTesting(E, F);
- schedule.AddSuccessorForTesting(F, G);
- schedule.AddSuccessorForTesting(G, H);
-
- schedule.AddSuccessorForTesting(E, D);
- schedule.AddSuccessorForTesting(F, C);
- schedule.AddSuccessorForTesting(G, B);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 8, true);
- BasicBlock* loop1[] = {B, C, D, E, F, G};
- CheckLoop(order, loop1, 6);
-
- BasicBlock* loop2[] = {C, D, E, F};
- CheckLoop(order, loop2, 4);
-
- BasicBlock* loop3[] = {D, E};
- CheckLoop(order, loop3, 2);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopFollow1) {
- Schedule schedule(zone());
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, 1));
- base::SmartPointer<TestLoop> loop2(CreateLoop(&schedule, 1));
-
- BasicBlock* A = schedule.start();
- BasicBlock* E = schedule.end();
-
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->header(), loop2->header());
- schedule.AddSuccessorForTesting(loop2->last(), E);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
-
- EXPECT_EQ(schedule.BasicBlockCount(), order->size());
- CheckLoop(order, loop1->nodes, loop1->count);
- CheckLoop(order, loop2->nodes, loop2->count);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopFollow2) {
- Schedule schedule(zone());
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, 1));
- base::SmartPointer<TestLoop> loop2(CreateLoop(&schedule, 1));
-
- BasicBlock* A = schedule.start();
- BasicBlock* S = schedule.NewBasicBlock();
- BasicBlock* E = schedule.end();
-
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->header(), S);
- schedule.AddSuccessorForTesting(S, loop2->header());
- schedule.AddSuccessorForTesting(loop2->last(), E);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
-
- EXPECT_EQ(schedule.BasicBlockCount(), order->size());
- CheckLoop(order, loop1->nodes, loop1->count);
- CheckLoop(order, loop2->nodes, loop2->count);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopFollowN) {
- for (int size = 1; size < 5; size++) {
- for (int exit = 0; exit < size; exit++) {
- Schedule schedule(zone());
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, size));
- base::SmartPointer<TestLoop> loop2(CreateLoop(&schedule, size));
- BasicBlock* A = schedule.start();
- BasicBlock* E = schedule.end();
-
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->nodes[exit], loop2->header());
- schedule.AddSuccessorForTesting(loop2->nodes[exit], E);
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
-
- EXPECT_EQ(schedule.BasicBlockCount(), order->size());
- CheckLoop(order, loop1->nodes, loop1->count);
- CheckLoop(order, loop2->nodes, loop2->count);
- }
- }
-}
-
-
-TEST_F(SchedulerRPOTest, NestedLoopFollow1) {
- Schedule schedule(zone());
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, 1));
- base::SmartPointer<TestLoop> loop2(CreateLoop(&schedule, 1));
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* E = schedule.end();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, loop1->header());
- schedule.AddSuccessorForTesting(loop1->header(), loop2->header());
- schedule.AddSuccessorForTesting(loop2->last(), C);
- schedule.AddSuccessorForTesting(C, E);
- schedule.AddSuccessorForTesting(C, B);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
-
- EXPECT_EQ(schedule.BasicBlockCount(), order->size());
- CheckLoop(order, loop1->nodes, loop1->count);
- CheckLoop(order, loop2->nodes, loop2->count);
-
- BasicBlock* loop3[] = {B, loop1->nodes[0], loop2->nodes[0], C};
- CheckLoop(order, loop3, 4);
-}
-
-
-TEST_F(SchedulerRPOTest, LoopBackedges1) {
- int size = 8;
- for (int i = 0; i < size; i++) {
- for (int j = 0; j < size; j++) {
- Schedule schedule(zone());
- BasicBlock* A = schedule.start();
- BasicBlock* E = schedule.end();
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, size));
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->last(), E);
-
- schedule.AddSuccessorForTesting(loop1->nodes[i], loop1->header());
- schedule.AddSuccessorForTesting(loop1->nodes[j], E);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, schedule.BasicBlockCount(), true);
- CheckLoop(order, loop1->nodes, loop1->count);
- }
- }
-}
-
-
-TEST_F(SchedulerRPOTest, LoopOutedges1) {
- int size = 8;
- for (int i = 0; i < size; i++) {
- for (int j = 0; j < size; j++) {
- Schedule schedule(zone());
- BasicBlock* A = schedule.start();
- BasicBlock* D = schedule.NewBasicBlock();
- BasicBlock* E = schedule.end();
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, size));
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->last(), E);
-
- schedule.AddSuccessorForTesting(loop1->nodes[i], loop1->header());
- schedule.AddSuccessorForTesting(loop1->nodes[j], D);
- schedule.AddSuccessorForTesting(D, E);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, schedule.BasicBlockCount(), true);
- CheckLoop(order, loop1->nodes, loop1->count);
- }
- }
-}
-
-
-TEST_F(SchedulerRPOTest, LoopOutedges2) {
- int size = 8;
- for (int i = 0; i < size; i++) {
- Schedule schedule(zone());
- BasicBlock* A = schedule.start();
- BasicBlock* E = schedule.end();
-
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, size));
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->last(), E);
-
- for (int j = 0; j < size; j++) {
- BasicBlock* O = schedule.NewBasicBlock();
- schedule.AddSuccessorForTesting(loop1->nodes[j], O);
- schedule.AddSuccessorForTesting(O, E);
- }
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, schedule.BasicBlockCount(), true);
- CheckLoop(order, loop1->nodes, loop1->count);
- }
-}
-
-
-TEST_F(SchedulerRPOTest, LoopOutloops1) {
- int size = 8;
- for (int i = 0; i < size; i++) {
- Schedule schedule(zone());
- BasicBlock* A = schedule.start();
- BasicBlock* E = schedule.end();
- base::SmartPointer<TestLoop> loop1(CreateLoop(&schedule, size));
- schedule.AddSuccessorForTesting(A, loop1->header());
- schedule.AddSuccessorForTesting(loop1->last(), E);
-
- TestLoop** loopN = new TestLoop* [size];
- for (int j = 0; j < size; j++) {
- loopN[j] = CreateLoop(&schedule, 2);
- schedule.AddSuccessorForTesting(loop1->nodes[j], loopN[j]->header());
- schedule.AddSuccessorForTesting(loopN[j]->last(), E);
- }
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, schedule.BasicBlockCount(), true);
- CheckLoop(order, loop1->nodes, loop1->count);
-
- for (int j = 0; j < size; j++) {
- CheckLoop(order, loopN[j]->nodes, loopN[j]->count);
- delete loopN[j];
- }
- delete[] loopN;
- }
-}
-
-
-TEST_F(SchedulerRPOTest, LoopMultibackedge) {
- Schedule schedule(zone());
-
- BasicBlock* A = schedule.start();
- BasicBlock* B = schedule.NewBasicBlock();
- BasicBlock* C = schedule.NewBasicBlock();
- BasicBlock* D = schedule.NewBasicBlock();
- BasicBlock* E = schedule.NewBasicBlock();
-
- schedule.AddSuccessorForTesting(A, B);
- schedule.AddSuccessorForTesting(B, C);
- schedule.AddSuccessorForTesting(B, D);
- schedule.AddSuccessorForTesting(B, E);
- schedule.AddSuccessorForTesting(C, B);
- schedule.AddSuccessorForTesting(D, B);
- schedule.AddSuccessorForTesting(E, B);
-
- BasicBlockVector* order = Scheduler::ComputeSpecialRPO(zone(), &schedule);
- CheckRPONumbers(order, 5, true);
-
- BasicBlock* loop1[] = {B, C, D, E};
- CheckLoop(order, loop1, 4);
-}
-
-
-// -----------------------------------------------------------------------------
-// Graph end-to-end scheduling.
-
-
TEST_F(SchedulerTest, BuildScheduleEmpty) {
graph()->SetStart(graph()->NewNode(common()->Start(0)));
graph()->SetEnd(graph()->NewNode(common()->End(1), graph()->start()));
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