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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 33 #include "compiler.h" | 33 #include "compiler.h" |
| 34 #include "data-flow.h" | 34 #include "data-flow.h" |
| 35 #include "debug.h" | 35 #include "debug.h" |
| 36 #include "fast-codegen.h" | 36 #include "fast-codegen.h" |
| 37 #include "flow-graph.h" | 37 #include "flow-graph.h" |
| 38 #include "full-codegen.h" | 38 #include "full-codegen.h" |
| 39 #include "liveedit.h" | 39 #include "liveedit.h" |
| 40 #include "oprofile-agent.h" | 40 #include "oprofile-agent.h" |
| 41 #include "rewriter.h" | 41 #include "rewriter.h" |
| 42 #include "scopes.h" | 42 #include "scopes.h" |
| 43 #include "scopeinfo.h" |
| 43 | 44 |
| 44 namespace v8 { | 45 namespace v8 { |
| 45 namespace internal { | 46 namespace internal { |
| 46 | 47 |
| 47 // For normal operation the syntax checker is used to determine whether to | 48 // For normal operation the syntax checker is used to determine whether to |
| 48 // use the full compiler for top level code or not. However if the flag | 49 // use the full compiler for top level code or not. However if the flag |
| 49 // --always-full-compiler is specified or debugging is active the full | 50 // --always-full-compiler is specified or debugging is active the full |
| 50 // compiler will be used for all code. | 51 // compiler will be used for all code. |
| 51 static bool AlwaysFullCompiler() { | 52 static bool AlwaysFullCompiler() { |
| 52 #ifdef ENABLE_DEBUGGER_SUPPORT | 53 #ifdef ENABLE_DEBUGGER_SUPPORT |
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| 149 } | 150 } |
| 150 } | 151 } |
| 151 | 152 |
| 152 return CodeGenerator::MakeCode(info); | 153 return CodeGenerator::MakeCode(info); |
| 153 } | 154 } |
| 154 | 155 |
| 155 | 156 |
| 156 #ifdef ENABLE_DEBUGGER_SUPPORT | 157 #ifdef ENABLE_DEBUGGER_SUPPORT |
| 157 Handle<Code> MakeCodeForLiveEdit(CompilationInfo* info) { | 158 Handle<Code> MakeCodeForLiveEdit(CompilationInfo* info) { |
| 158 Handle<Context> context = Handle<Context>::null(); | 159 Handle<Context> context = Handle<Context>::null(); |
| 159 return MakeCode(context, info); | 160 Handle<Code> code = MakeCode(context, info); |
| 161 if (!info->shared_info().is_null()) { |
| 162 info->shared_info()->set_scope_info( |
| 163 *ScopeInfo<>::CreateHeapObject(info->scope())); |
| 164 } |
| 165 return code; |
| 160 } | 166 } |
| 161 #endif | 167 #endif |
| 162 | 168 |
| 163 | 169 |
| 164 static Handle<SharedFunctionInfo> MakeFunctionInfo(bool is_global, | 170 static Handle<SharedFunctionInfo> MakeFunctionInfo(bool is_global, |
| 165 bool is_eval, | 171 bool is_eval, |
| 166 Compiler::ValidationState validate, | 172 Compiler::ValidationState validate, |
| 167 Handle<Script> script, | 173 Handle<Script> script, |
| 168 Handle<Context> context, | 174 Handle<Context> context, |
| 169 v8::Extension* extension, | 175 v8::Extension* extension, |
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| 245 is_eval ? Logger::EVAL_TAG : | 251 is_eval ? Logger::EVAL_TAG : |
| 246 Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script), | 252 Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script), |
| 247 *code, "")); | 253 *code, "")); |
| 248 OPROFILE(CreateNativeCodeRegion(is_eval ? "Eval" : "Script", | 254 OPROFILE(CreateNativeCodeRegion(is_eval ? "Eval" : "Script", |
| 249 code->instruction_start(), | 255 code->instruction_start(), |
| 250 code->instruction_size())); | 256 code->instruction_size())); |
| 251 } | 257 } |
| 252 | 258 |
| 253 // Allocate function. | 259 // Allocate function. |
| 254 Handle<SharedFunctionInfo> result = | 260 Handle<SharedFunctionInfo> result = |
| 255 Factory::NewSharedFunctionInfo(lit->name(), | 261 Factory::NewSharedFunctionInfo( |
| 256 lit->materialized_literal_count(), | 262 lit->name(), |
| 257 code); | 263 lit->materialized_literal_count(), |
| 264 code, |
| 265 ScopeInfo<>::CreateHeapObject(info.scope())); |
| 258 | 266 |
| 259 ASSERT_EQ(RelocInfo::kNoPosition, lit->function_token_position()); | 267 ASSERT_EQ(RelocInfo::kNoPosition, lit->function_token_position()); |
| 260 Compiler::SetFunctionInfo(result, lit, true, script); | 268 Compiler::SetFunctionInfo(result, lit, true, script); |
| 261 | 269 |
| 262 // Hint to the runtime system used when allocating space for initial | 270 // Hint to the runtime system used when allocating space for initial |
| 263 // property space by setting the expected number of properties for | 271 // property space by setting the expected number of properties for |
| 264 // the instances of the function. | 272 // the instances of the function. |
| 265 SetExpectedNofPropertiesFromEstimate(result, lit->expected_property_count()); | 273 SetExpectedNofPropertiesFromEstimate(result, lit->expected_property_count()); |
| 266 | 274 |
| 267 #ifdef ENABLE_DEBUGGER_SUPPORT | 275 #ifdef ENABLE_DEBUGGER_SUPPORT |
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| 438 return false; | 446 return false; |
| 439 } | 447 } |
| 440 | 448 |
| 441 RecordFunctionCompilation(Logger::LAZY_COMPILE_TAG, | 449 RecordFunctionCompilation(Logger::LAZY_COMPILE_TAG, |
| 442 name, | 450 name, |
| 443 Handle<String>(shared->inferred_name()), | 451 Handle<String>(shared->inferred_name()), |
| 444 start_position, | 452 start_position, |
| 445 info->script(), | 453 info->script(), |
| 446 code); | 454 code); |
| 447 | 455 |
| 448 // Update the shared function info with the compiled code. | 456 // Update the shared function info with the compiled code and the scope info. |
| 449 shared->set_code(*code); | 457 shared->set_code(*code); |
| 458 shared->set_scope_info(*ScopeInfo<>::CreateHeapObject(info->scope())); |
| 450 | 459 |
| 451 // Set the expected number of properties for instances. | 460 // Set the expected number of properties for instances. |
| 452 SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count()); | 461 SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count()); |
| 453 | 462 |
| 454 // Set the optimication hints after performing lazy compilation, as these are | 463 // Set the optimication hints after performing lazy compilation, as these are |
| 455 // not set when the function is set up as a lazily compiled function. | 464 // not set when the function is set up as a lazily compiled function. |
| 456 shared->SetThisPropertyAssignmentsInfo( | 465 shared->SetThisPropertyAssignmentsInfo( |
| 457 lit->has_only_simple_this_property_assignments(), | 466 lit->has_only_simple_this_property_assignments(), |
| 458 *lit->this_property_assignments()); | 467 *lit->this_property_assignments()); |
| 459 | 468 |
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| 474 #endif | 483 #endif |
| 475 | 484 |
| 476 // Determine if the function can be lazily compiled. This is | 485 // Determine if the function can be lazily compiled. This is |
| 477 // necessary to allow some of our builtin JS files to be lazily | 486 // necessary to allow some of our builtin JS files to be lazily |
| 478 // compiled. These builtins cannot be handled lazily by the parser, | 487 // compiled. These builtins cannot be handled lazily by the parser, |
| 479 // since we have to know if a function uses the special natives | 488 // since we have to know if a function uses the special natives |
| 480 // syntax, which is something the parser records. | 489 // syntax, which is something the parser records. |
| 481 bool allow_lazy = literal->AllowsLazyCompilation() && | 490 bool allow_lazy = literal->AllowsLazyCompilation() && |
| 482 !LiveEditFunctionTracker::IsActive(); | 491 !LiveEditFunctionTracker::IsActive(); |
| 483 | 492 |
| 493 Handle<Object> scope_info(ScopeInfo<>::EmptyHeapObject()); |
| 494 |
| 484 // Generate code | 495 // Generate code |
| 485 Handle<Code> code; | 496 Handle<Code> code; |
| 486 if (FLAG_lazy && allow_lazy) { | 497 if (FLAG_lazy && allow_lazy) { |
| 487 code = ComputeLazyCompile(literal->num_parameters()); | 498 code = ComputeLazyCompile(literal->num_parameters()); |
| 488 } else { | 499 } else { |
| 489 // The bodies of function literals have not yet been visited by | 500 // The bodies of function literals have not yet been visited by |
| 490 // the AST optimizer/analyzer. | 501 // the AST optimizer/analyzer. |
| 491 if (!Rewriter::Optimize(literal)) { | 502 if (!Rewriter::Optimize(literal)) { |
| 492 return Handle<SharedFunctionInfo>::null(); | 503 return Handle<SharedFunctionInfo>::null(); |
| 493 } | 504 } |
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| 555 return Handle<SharedFunctionInfo>::null(); | 566 return Handle<SharedFunctionInfo>::null(); |
| 556 } | 567 } |
| 557 | 568 |
| 558 // Function compilation complete. | 569 // Function compilation complete. |
| 559 RecordFunctionCompilation(Logger::FUNCTION_TAG, | 570 RecordFunctionCompilation(Logger::FUNCTION_TAG, |
| 560 literal->name(), | 571 literal->name(), |
| 561 literal->inferred_name(), | 572 literal->inferred_name(), |
| 562 literal->start_position(), | 573 literal->start_position(), |
| 563 script, | 574 script, |
| 564 code); | 575 code); |
| 576 scope_info = ScopeInfo<>::CreateHeapObject(info.scope()); |
| 565 } | 577 } |
| 566 | 578 |
| 567 // Create a shared function info object. | 579 // Create a shared function info object. |
| 568 Handle<SharedFunctionInfo> result = | 580 Handle<SharedFunctionInfo> result = |
| 569 Factory::NewSharedFunctionInfo(literal->name(), | 581 Factory::NewSharedFunctionInfo(literal->name(), |
| 570 literal->materialized_literal_count(), | 582 literal->materialized_literal_count(), |
| 571 code); | 583 code, |
| 584 scope_info); |
| 572 SetFunctionInfo(result, literal, false, script); | 585 SetFunctionInfo(result, literal, false, script); |
| 573 | 586 |
| 574 // Set the expected number of properties for instances and return | 587 // Set the expected number of properties for instances and return |
| 575 // the resulting function. | 588 // the resulting function. |
| 576 SetExpectedNofPropertiesFromEstimate(result, | 589 SetExpectedNofPropertiesFromEstimate(result, |
| 577 literal->expected_property_count()); | 590 literal->expected_property_count()); |
| 578 live_edit_tracker.RecordFunctionInfo(result, literal); | 591 live_edit_tracker.RecordFunctionInfo(result, literal); |
| 579 return result; | 592 return result; |
| 580 } | 593 } |
| 581 | 594 |
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| 633 PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script), | 646 PROFILE(CodeCreateEvent(Logger::ToNativeByScript(tag, *script), |
| 634 *code, *func_name)); | 647 *code, *func_name)); |
| 635 OPROFILE(CreateNativeCodeRegion(*func_name, | 648 OPROFILE(CreateNativeCodeRegion(*func_name, |
| 636 code->instruction_start(), | 649 code->instruction_start(), |
| 637 code->instruction_size())); | 650 code->instruction_size())); |
| 638 } | 651 } |
| 639 } | 652 } |
| 640 } | 653 } |
| 641 | 654 |
| 642 } } // namespace v8::internal | 655 } } // namespace v8::internal |
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