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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/js-typed-lowering.h" | 5 #include "src/compiler/js-typed-lowering.h" |
6 #include "src/code-factory.h" | 6 #include "src/code-factory.h" |
7 #include "src/compilation-dependencies.h" | 7 #include "src/compilation-dependencies.h" |
8 #include "src/compiler/access-builder.h" | 8 #include "src/compiler/access-builder.h" |
9 #include "src/compiler/js-graph.h" | 9 #include "src/compiler/js-graph.h" |
10 #include "src/compiler/js-operator.h" | 10 #include "src/compiler/js-operator.h" |
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853 Node* control = graph()->start(); | 853 Node* control = graph()->start(); |
854 Reduction r = Reduce(graph()->NewNode(javascript()->Subtract(hint), lhs, rhs, | 854 Reduction r = Reduce(graph()->NewNode(javascript()->Subtract(hint), lhs, rhs, |
855 context, frame_state, effect, control)); | 855 context, frame_state, effect, control)); |
856 ASSERT_TRUE(r.Changed()); | 856 ASSERT_TRUE(r.Changed()); |
857 EXPECT_THAT(r.replacement(), | 857 EXPECT_THAT(r.replacement(), |
858 IsSpeculativeNumberSubtract(NumberOperationHint::kSignedSmall, | 858 IsSpeculativeNumberSubtract(NumberOperationHint::kSignedSmall, |
859 lhs, rhs, effect, control)); | 859 lhs, rhs, effect, control)); |
860 } | 860 } |
861 | 861 |
862 // ----------------------------------------------------------------------------- | 862 // ----------------------------------------------------------------------------- |
863 // JSInstanceOf | |
864 // Test that instanceOf is reduced if and only if the right-hand side is a | |
865 // function constant. Functional correctness is ensured elsewhere. | |
866 | |
867 TEST_F(JSTypedLoweringTest, JSInstanceOfSpecialization) { | |
868 Node* const context = Parameter(Type::Any()); | |
869 Node* const frame_state = EmptyFrameState(); | |
870 Node* const effect = graph()->start(); | |
871 Node* const control = graph()->start(); | |
872 | |
873 Node* instanceOf = | |
874 graph()->NewNode(javascript()->InstanceOf(), Parameter(Type::Any(), 0), | |
875 HeapConstant(isolate()->object_function()), context, | |
876 frame_state, effect, control); | |
877 Reduction r = Reduce(instanceOf); | |
878 ASSERT_TRUE(r.Changed()); | |
879 } | |
880 | |
881 | |
882 TEST_F(JSTypedLoweringTest, JSInstanceOfNoSpecialization) { | |
883 Node* const context = Parameter(Type::Any()); | |
884 Node* const frame_state = EmptyFrameState(); | |
885 Node* const effect = graph()->start(); | |
886 Node* const control = graph()->start(); | |
887 | |
888 // Do not reduce if right-hand side is not a function constant. | |
889 Node* instanceOf = graph()->NewNode( | |
890 javascript()->InstanceOf(), Parameter(Type::Any(), 0), | |
891 Parameter(Type::Any()), context, frame_state, effect, control); | |
892 Node* dummy = graph()->NewNode(javascript()->ToObject(), instanceOf, context, | |
893 frame_state, effect, control); | |
894 Reduction r = Reduce(instanceOf); | |
895 ASSERT_FALSE(r.Changed()); | |
896 ASSERT_EQ(instanceOf, dummy->InputAt(0)); | |
897 } | |
898 | |
899 // ----------------------------------------------------------------------------- | |
900 // JSBitwiseAnd | 863 // JSBitwiseAnd |
901 | 864 |
902 TEST_F(JSTypedLoweringTest, JSBitwiseAndWithSignedSmallHint) { | 865 TEST_F(JSTypedLoweringTest, JSBitwiseAndWithSignedSmallHint) { |
903 BinaryOperationHint const hint = BinaryOperationHint::kSignedSmall; | 866 BinaryOperationHint const hint = BinaryOperationHint::kSignedSmall; |
904 Node* lhs = Parameter(Type::Number(), 2); | 867 Node* lhs = Parameter(Type::Number(), 2); |
905 Node* rhs = Parameter(Type::Number(), 3); | 868 Node* rhs = Parameter(Type::Number(), 3); |
906 Node* effect = graph()->start(); | 869 Node* effect = graph()->start(); |
907 Node* control = graph()->start(); | 870 Node* control = graph()->start(); |
908 Reduction r = Reduce(graph()->NewNode(javascript()->BitwiseAnd(hint), lhs, | 871 Reduction r = Reduce(graph()->NewNode(javascript()->BitwiseAnd(hint), lhs, |
909 rhs, UndefinedConstant(), | 872 rhs, UndefinedConstant(), |
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1036 EmptyFrameState(), effect, control)); | 999 EmptyFrameState(), effect, control)); |
1037 ASSERT_TRUE(r.Changed()); | 1000 ASSERT_TRUE(r.Changed()); |
1038 EXPECT_THAT(r.replacement(), IsSpeculativeNumberBitwiseXor( | 1001 EXPECT_THAT(r.replacement(), IsSpeculativeNumberBitwiseXor( |
1039 NumberOperationHint::kNumberOrOddball, lhs, | 1002 NumberOperationHint::kNumberOrOddball, lhs, |
1040 rhs, effect, control)); | 1003 rhs, effect, control)); |
1041 } | 1004 } |
1042 | 1005 |
1043 } // namespace compiler | 1006 } // namespace compiler |
1044 } // namespace internal | 1007 } // namespace internal |
1045 } // namespace v8 | 1008 } // namespace v8 |
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