Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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/js-context-relaxation.h" |
| 6 | #include "src/compiler/js-graph.h" |
| 7 | #include "test/unittests/compiler/graph-unittest.h" |
| 8 | #include "test/unittests/compiler/node-test-utils.h" |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace internal { |
| 12 | namespace compiler { |
| 13 | |
| 14 | class JSContextRelaxationTest : public GraphTest { |
| 15 | public: |
| 16 | JSContextRelaxationTest() : GraphTest(3), javascript_(zone()) {} |
| 17 | ~JSContextRelaxationTest() override {} |
| 18 | |
| 19 | protected: |
| 20 | Reduction Reduce(Node* node, MachineOperatorBuilder::Flags flags = |
| 21 | MachineOperatorBuilder::kNoFlags) { |
| 22 | MachineOperatorBuilder machine(zone(), MachineType::PointerRepresentation(), |
| 23 | flags); |
| 24 | JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr, |
| 25 | &machine); |
| 26 | // TODO(titzer): mock the GraphReducer here for better unit testing. |
| 27 | GraphReducer graph_reducer(zone(), graph()); |
| 28 | JSContextRelaxation reducer; |
| 29 | return reducer.Reduce(node); |
| 30 | } |
| 31 | |
| 32 | Node* EmptyFrameState() { |
| 33 | MachineOperatorBuilder machine(zone()); |
| 34 | JSGraph jsgraph(isolate(), graph(), common(), javascript(), nullptr, |
| 35 | &machine); |
| 36 | return jsgraph.EmptyFrameState(); |
| 37 | } |
| 38 | |
| 39 | Node* ShallowFrameStateChain(Node* outer_context, |
| 40 | ContextCallingMode context_calling_mode) { |
| 41 | const FrameStateFunctionInfo* const frame_state_function_info = |
| 42 | common()->CreateFrameStateFunctionInfo( |
| 43 | FrameStateType::kJavaScriptFunction, 3, 0, |
| 44 | Handle<SharedFunctionInfo>(), context_calling_mode); |
| 45 | const Operator* op = common()->FrameState(BailoutId::None(), |
| 46 | OutputFrameStateCombine::Ignore(), |
| 47 | frame_state_function_info); |
| 48 | return graph()->NewNode(op, graph()->start(), graph()->start(), |
| 49 | graph()->start(), outer_context, graph()->start(), |
| 50 | graph()->start()); |
| 51 | } |
| 52 | |
| 53 | Node* DeepFrameStateChain(Node* outer_context, |
| 54 | ContextCallingMode context_calling_mode) { |
| 55 | const FrameStateFunctionInfo* const frame_state_function_info = |
| 56 | common()->CreateFrameStateFunctionInfo( |
| 57 | FrameStateType::kJavaScriptFunction, 3, 0, |
| 58 | Handle<SharedFunctionInfo>(), context_calling_mode); |
| 59 | const Operator* op = common()->FrameState(BailoutId::None(), |
| 60 | OutputFrameStateCombine::Ignore(), |
| 61 | frame_state_function_info); |
| 62 | Node* shallow_frame_state = |
| 63 | ShallowFrameStateChain(outer_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 64 | return graph()->NewNode(op, graph()->start(), graph()->start(), |
| 65 | graph()->start(), graph()->start(), |
| 66 | graph()->start(), shallow_frame_state); |
| 67 | } |
| 68 | |
| 69 | JSOperatorBuilder* javascript() { return &javascript_; } |
| 70 | |
| 71 | private: |
| 72 | JSOperatorBuilder javascript_; |
| 73 | }; |
| 74 | |
| 75 | |
| 76 | TEST_F(JSContextRelaxationTest, |
| 77 | RelaxJSCallFunctionShallowFrameStateChainNoCrossCtx) { |
| 78 | Node* const input0 = Parameter(0); |
| 79 | Node* const input1 = Parameter(1); |
| 80 | Node* const context = Parameter(2); |
| 81 | Node* const outer_context = Parameter(3); |
| 82 | Node* const frame_state = |
| 83 | ShallowFrameStateChain(outer_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 84 | Node* const effect = graph()->start(); |
| 85 | Node* const control = graph()->start(); |
| 86 | Node* node = graph()->NewNode( |
| 87 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 88 | context, frame_state, frame_state, effect, control); |
| 89 | Reduction const r = Reduce(node); |
| 90 | EXPECT_TRUE(r.Changed()); |
| 91 | EXPECT_EQ(outer_context, NodeProperties::GetContextInput(node)); |
| 92 | } |
| 93 | |
| 94 | TEST_F(JSContextRelaxationTest, |
| 95 | RelaxJSCallFunctionShallowFrameStateChainCrossCtx) { |
| 96 | Node* const input0 = Parameter(0); |
| 97 | Node* const input1 = Parameter(1); |
| 98 | Node* const context = Parameter(2); |
| 99 | Node* const outer_context = Parameter(3); |
| 100 | Node* const frame_state = |
| 101 | ShallowFrameStateChain(outer_context, CALL_CHANGES_NATIVE_CONTEXT); |
| 102 | Node* const effect = graph()->start(); |
| 103 | Node* const control = graph()->start(); |
| 104 | Node* node = graph()->NewNode( |
| 105 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 106 | context, frame_state, frame_state, effect, control); |
| 107 | Reduction const r = Reduce(node); |
| 108 | EXPECT_FALSE(r.Changed()); |
| 109 | EXPECT_EQ(context, NodeProperties::GetContextInput(node)); |
| 110 | } |
| 111 | |
| 112 | TEST_F(JSContextRelaxationTest, |
| 113 | RelaxJSCallFunctionDeepFrameStateChainNoCrossCtx) { |
| 114 | Node* const input0 = Parameter(0); |
| 115 | Node* const input1 = Parameter(1); |
| 116 | Node* const context = Parameter(2); |
| 117 | Node* const outer_context = Parameter(3); |
| 118 | Node* const frame_state = |
| 119 | DeepFrameStateChain(outer_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 120 | Node* const effect = graph()->start(); |
| 121 | Node* const control = graph()->start(); |
| 122 | Node* node = graph()->NewNode( |
| 123 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 124 | context, frame_state, frame_state, effect, control); |
| 125 | Reduction const r = Reduce(node); |
| 126 | EXPECT_TRUE(r.Changed()); |
| 127 | EXPECT_EQ(outer_context, NodeProperties::GetContextInput(node)); |
| 128 | } |
| 129 | |
| 130 | TEST_F(JSContextRelaxationTest, |
| 131 | RelaxJSCallFunctionDeepFrameStateChainCrossCtx) { |
| 132 | Node* const input0 = Parameter(0); |
| 133 | Node* const input1 = Parameter(1); |
| 134 | Node* const context = Parameter(2); |
| 135 | Node* const outer_context = Parameter(3); |
| 136 | Node* const frame_state = |
| 137 | DeepFrameStateChain(outer_context, CALL_CHANGES_NATIVE_CONTEXT); |
| 138 | Node* const effect = graph()->start(); |
| 139 | Node* const control = graph()->start(); |
| 140 | Node* node = graph()->NewNode( |
| 141 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 142 | context, frame_state, frame_state, effect, control); |
| 143 | Reduction const r = Reduce(node); |
| 144 | EXPECT_FALSE(r.Changed()); |
| 145 | EXPECT_EQ(context, NodeProperties::GetContextInput(node)); |
| 146 | } |
| 147 | |
| 148 | TEST_F(JSContextRelaxationTest, |
| 149 | RelaxJSCallFunctionDeepContextChainFullRelaxForCatch) { |
| 150 | Node* const input0 = Parameter(0); |
| 151 | Node* const input1 = Parameter(1); |
| 152 | Node* const context = Parameter(2); |
| 153 | Node* const outer_context = Parameter(3); |
| 154 | const Operator* op = javascript()->CreateCatchContext(Handle<String>()); |
| 155 | Node* const effect = graph()->start(); |
| 156 | Node* const control = graph()->start(); |
| 157 | Node* nested_context = graph()->NewNode( |
| 158 | op, graph()->start(), graph()->start(), outer_context, effect, control); |
| 159 | Node* const frame_state_2 = |
| 160 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 161 | Node* node = graph()->NewNode( |
| 162 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 163 | context, frame_state_2, frame_state_2, effect, control); |
| 164 | Reduction const r = Reduce(node); |
| 165 | EXPECT_TRUE(r.Changed()); |
| 166 | EXPECT_EQ(outer_context, NodeProperties::GetContextInput(node)); |
| 167 | } |
| 168 | |
| 169 | |
| 170 | TEST_F(JSContextRelaxationTest, |
| 171 | RelaxJSCallFunctionDeepContextChainFullRelaxForWith) { |
| 172 | Node* const input0 = Parameter(0); |
| 173 | Node* const input1 = Parameter(1); |
| 174 | Node* const context = Parameter(2); |
| 175 | Node* const outer_context = Parameter(3); |
| 176 | const Operator* op = javascript()->CreateWithContext(); |
| 177 | Node* const effect = graph()->start(); |
| 178 | Node* const control = graph()->start(); |
| 179 | Node* nested_context = graph()->NewNode( |
| 180 | op, graph()->start(), graph()->start(), outer_context, effect, control); |
| 181 | Node* const frame_state_2 = |
| 182 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 183 | Node* node = graph()->NewNode( |
| 184 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 185 | context, frame_state_2, frame_state_2, effect, control); |
| 186 | Reduction const r = Reduce(node); |
| 187 | EXPECT_TRUE(r.Changed()); |
| 188 | EXPECT_EQ(outer_context, NodeProperties::GetContextInput(node)); |
| 189 | } |
| 190 | |
| 191 | |
| 192 | TEST_F(JSContextRelaxationTest, |
| 193 | RelaxJSCallFunctionDeepContextChainFullRelaxForBlock) { |
| 194 | Node* const input0 = Parameter(0); |
| 195 | Node* const input1 = Parameter(1); |
| 196 | Node* const context = Parameter(2); |
| 197 | Node* const outer_context = Parameter(3); |
| 198 | Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::null(); |
| 199 | const Operator* op = javascript()->CreateBlockContext(scope_info); |
| 200 | Node* const effect = graph()->start(); |
| 201 | Node* const control = graph()->start(); |
| 202 | Node* nested_context = |
| 203 | graph()->NewNode(op, graph()->start(), outer_context, effect, control); |
| 204 | Node* const frame_state_2 = |
| 205 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 206 | Node* node = graph()->NewNode( |
| 207 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 208 | context, frame_state_2, frame_state_2, effect, control); |
| 209 | Reduction const r = Reduce(node); |
| 210 | EXPECT_TRUE(r.Changed()); |
| 211 | EXPECT_EQ(outer_context, NodeProperties::GetContextInput(node)); |
| 212 | } |
| 213 | |
| 214 | |
| 215 | TEST_F(JSContextRelaxationTest, |
| 216 | RelaxJSCallFunctionDeepContextChainPartialRelaxForScript) { |
| 217 | Node* const input0 = Parameter(0); |
| 218 | Node* const input1 = Parameter(1); |
| 219 | Node* const context = Parameter(2); |
| 220 | Node* const outer_context = Parameter(3); |
| 221 | Handle<ScopeInfo> scope_info = Handle<ScopeInfo>::null(); |
| 222 | const Operator* op = javascript()->CreateScriptContext(scope_info); |
| 223 | Node* const frame_state_1 = |
| 224 | ShallowFrameStateChain(outer_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 225 | Node* const effect = graph()->start(); |
| 226 | Node* const control = graph()->start(); |
| 227 | Node* nested_context = graph()->NewNode(op, graph()->start(), outer_context, |
| 228 | frame_state_1, effect, control); |
| 229 | Node* const frame_state_2 = |
| 230 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 231 | Node* node = graph()->NewNode( |
| 232 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 233 | context, frame_state_2, frame_state_2, effect, control); |
| 234 | Reduction const r = Reduce(node); |
| 235 | EXPECT_TRUE(r.Changed()); |
| 236 | EXPECT_EQ(nested_context, NodeProperties::GetContextInput(node)); |
| 237 | } |
| 238 | |
| 239 | |
| 240 | TEST_F(JSContextRelaxationTest, |
| 241 | RelaxJSCallFunctionDeepContextChainPartialRelaxForModule) { |
| 242 | Node* const input0 = Parameter(0); |
| 243 | Node* const input1 = Parameter(1); |
| 244 | Node* const context = Parameter(2); |
| 245 | Node* const outer_context = Parameter(3); |
| 246 | const Operator* op = javascript()->CreateModuleContext(); |
| 247 | Node* const effect = graph()->start(); |
| 248 | Node* const control = graph()->start(); |
| 249 | Node* nested_context = graph()->NewNode( |
| 250 | op, graph()->start(), graph()->start(), outer_context, effect, control); |
| 251 | Node* const frame_state_2 = |
| 252 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 253 | Node* node = graph()->NewNode( |
| 254 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 255 | context, frame_state_2, frame_state_2, effect, control); |
| 256 | Reduction const r = Reduce(node); |
| 257 | EXPECT_TRUE(r.Changed()); |
| 258 | EXPECT_EQ(nested_context, NodeProperties::GetContextInput(node)); |
| 259 | } |
| 260 | |
| 261 | |
| 262 | TEST_F(JSContextRelaxationTest, |
| 263 | RelaxJSCallFunctionDeepContextChainPartialNoRelax) { |
| 264 | Node* const input0 = Parameter(0); |
| 265 | Node* const input1 = Parameter(1); |
| 266 | Node* const context = Parameter(2); |
| 267 | Node* const outer_context = Parameter(3); |
| 268 | const Operator* op = javascript()->CreateFunctionContext(0); |
| 269 | Node* const effect = graph()->start(); |
| 270 | Node* const control = graph()->start(); |
| 271 | Node* nested_context = |
| 272 | graph()->NewNode(op, graph()->start(), outer_context, effect, control); |
| 273 | Node* const frame_state_2 = |
| 274 | ShallowFrameStateChain(nested_context, CALL_MAINTAINS_NATIVE_CONTEXT); |
| 275 | Node* node = graph()->NewNode( |
| 276 | javascript()->CallFunction(2, STRICT, VectorSlotPair()), input0, input1, |
| 277 | context, frame_state_2, frame_state_2, effect, control); |
| 278 | Reduction const r = Reduce(node); |
| 279 | EXPECT_FALSE(r.Changed()); |
| 280 | EXPECT_EQ(context, NodeProperties::GetContextInput(node)); |
| 281 | } |
| 282 | |
| 283 | } // namespace compiler |
| 284 | } // namespace internal |
| 285 | } // namespace v8 |