Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/compiler/checkpoint-elimination.h" |
| 6 | #include "src/compiler/common-operator.h" |
| 7 | #include "src/compiler/operator.h" |
| 8 | #include "test/unittests/compiler/graph-reducer-unittest.h" |
| 9 | #include "test/unittests/compiler/graph-unittest.h" |
| 10 | #include "test/unittests/compiler/node-test-utils.h" |
| 11 | |
| 12 | using testing::StrictMock; |
| 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | namespace compiler { |
| 17 | |
| 18 | class CheckpointEliminationTest : public GraphTest { |
| 19 | public: |
| 20 | CheckpointEliminationTest() : GraphTest() {} |
| 21 | ~CheckpointEliminationTest() override {} |
| 22 | |
| 23 | protected: |
| 24 | Reduction Reduce(AdvancedReducer::Editor* editor, Node* node) { |
| 25 | CheckpointElimination reducer(editor); |
| 26 | return reducer.Reduce(node); |
| 27 | } |
| 28 | |
| 29 | Reduction Reduce(Node* node) { |
| 30 | StrictMock<MockAdvancedReducerEditor> editor; |
| 31 | return Reduce(&editor, node); |
| 32 | } |
| 33 | }; |
| 34 | |
| 35 | namespace { |
| 36 | |
| 37 | const Operator kOpNoWrite(0, Operator::kNoWrite, "OpNoWrite", 0, 1, 0, 0, 1, 0); |
| 38 | |
| 39 | } // namespace |
| 40 | |
| 41 | // ----------------------------------------------------------------------------- |
| 42 | // Checkpoint |
| 43 | |
| 44 | TEST_F(CheckpointEliminationTest, CheckpointChain) { |
| 45 | Node* const control = graph()->start(); |
| 46 | Node* frame_state = EmptyFrameState(); |
| 47 | Node* checkpoint1 = graph()->NewNode(common()->Checkpoint(), frame_state, |
| 48 | graph()->start(), control); |
| 49 | Node* effect_link = graph()->NewNode(&kOpNoWrite, checkpoint1); |
| 50 | Node* checkpoint2 = graph()->NewNode(common()->Checkpoint(), frame_state, |
| 51 | effect_link, control); |
| 52 | Reduction r = Reduce(checkpoint2); |
| 53 | ASSERT_TRUE(r.Changed()); |
| 54 | EXPECT_EQ(effect_link, r.replacement()); |
| 55 | } |
| 56 | |
| 57 | } // namespace compiler |
| 58 | } // namespace internal |
| 59 | } // namespace v8 |