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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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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34 #include "debug.h" | 34 #include "debug.h" |
35 #include "fast-codegen.h" | 35 #include "fast-codegen.h" |
36 #include "oprofile-agent.h" | 36 #include "oprofile-agent.h" |
37 #include "rewriter.h" | 37 #include "rewriter.h" |
38 #include "scopes.h" | 38 #include "scopes.h" |
39 #include "usage-analyzer.h" | 39 #include "usage-analyzer.h" |
40 | 40 |
41 namespace v8 { | 41 namespace v8 { |
42 namespace internal { | 42 namespace internal { |
43 | 43 |
44 #ifndef V8_TARGET_ARCH_ARM | |
45 | 44 |
46 class CodeGenSelector: public AstVisitor { | 45 class CodeGenSelector: public AstVisitor { |
47 public: | 46 public: |
48 enum CodeGenTag { NORMAL, FAST }; | 47 enum CodeGenTag { NORMAL, FAST }; |
49 | 48 |
50 CodeGenSelector() : has_supported_syntax_(true) {} | 49 CodeGenSelector() : has_supported_syntax_(true) {} |
51 | 50 |
52 CodeGenTag Select(FunctionLiteral* fun); | 51 CodeGenTag Select(FunctionLiteral* fun); |
53 | 52 |
54 private: | 53 private: |
55 void VisitStatements(ZoneList<Statement*>* stmts); | 54 void VisitStatements(ZoneList<Statement*>* stmts); |
56 | 55 |
57 // AST node visit functions. | 56 // AST node visit functions. |
58 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); | 57 #define DECLARE_VISIT(type) virtual void Visit##type(type* node); |
59 AST_NODE_LIST(DECLARE_VISIT) | 58 AST_NODE_LIST(DECLARE_VISIT) |
60 #undef DECLARE_VISIT | 59 #undef DECLARE_VISIT |
61 | 60 |
62 bool has_supported_syntax_; | 61 bool has_supported_syntax_; |
63 | 62 |
64 DISALLOW_COPY_AND_ASSIGN(CodeGenSelector); | 63 DISALLOW_COPY_AND_ASSIGN(CodeGenSelector); |
65 }; | 64 }; |
66 | 65 |
67 #endif | |
68 | |
69 | 66 |
70 static Handle<Code> MakeCode(FunctionLiteral* literal, | 67 static Handle<Code> MakeCode(FunctionLiteral* literal, |
71 Handle<Script> script, | 68 Handle<Script> script, |
72 Handle<Context> context, | 69 Handle<Context> context, |
73 bool is_eval) { | 70 bool is_eval) { |
74 ASSERT(literal != NULL); | 71 ASSERT(literal != NULL); |
75 | 72 |
76 // Rewrite the AST by introducing .result assignments where needed. | 73 // Rewrite the AST by introducing .result assignments where needed. |
77 if (!Rewriter::Process(literal) || !AnalyzeVariableUsage(literal)) { | 74 if (!Rewriter::Process(literal) || !AnalyzeVariableUsage(literal)) { |
78 // Signal a stack overflow by returning a null handle. The stack | 75 // Signal a stack overflow by returning a null handle. The stack |
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99 #endif | 96 #endif |
100 | 97 |
101 // Optimize the AST. | 98 // Optimize the AST. |
102 if (!Rewriter::Optimize(literal)) { | 99 if (!Rewriter::Optimize(literal)) { |
103 // Signal a stack overflow by returning a null handle. The stack | 100 // Signal a stack overflow by returning a null handle. The stack |
104 // overflow exception will be thrown by the caller. | 101 // overflow exception will be thrown by the caller. |
105 return Handle<Code>::null(); | 102 return Handle<Code>::null(); |
106 } | 103 } |
107 | 104 |
108 // Generate code and return it. | 105 // Generate code and return it. |
109 #ifndef V8_TARGET_ARCH_ARM | |
110 if (FLAG_fast_compiler) { | 106 if (FLAG_fast_compiler) { |
111 CodeGenSelector selector; | 107 CodeGenSelector selector; |
112 CodeGenSelector::CodeGenTag code_gen = selector.Select(literal); | 108 CodeGenSelector::CodeGenTag code_gen = selector.Select(literal); |
113 if (code_gen == CodeGenSelector::FAST) { | 109 if (code_gen == CodeGenSelector::FAST) { |
114 return FastCodeGenerator::MakeCode(literal, script); | 110 return FastCodeGenerator::MakeCode(literal, script); |
115 } | 111 } |
116 ASSERT(code_gen == CodeGenSelector::NORMAL); | 112 ASSERT(code_gen == CodeGenSelector::NORMAL); |
117 } | 113 } |
118 #endif | |
119 | |
120 return CodeGenerator::MakeCode(literal, script, is_eval); | 114 return CodeGenerator::MakeCode(literal, script, is_eval); |
121 } | 115 } |
122 | 116 |
123 | 117 |
124 static bool IsValidJSON(FunctionLiteral* lit) { | 118 static bool IsValidJSON(FunctionLiteral* lit) { |
125 if (lit->body()->length() != 1) | 119 if (lit->body()->length() != 1) |
126 return false; | 120 return false; |
127 Statement* stmt = lit->body()->at(0); | 121 Statement* stmt = lit->body()->at(0); |
128 if (stmt->AsExpressionStatement() == NULL) | 122 if (stmt->AsExpressionStatement() == NULL) |
129 return false; | 123 return false; |
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446 lit->has_only_this_property_assignments(), | 440 lit->has_only_this_property_assignments(), |
447 lit->has_only_simple_this_property_assignments(), | 441 lit->has_only_simple_this_property_assignments(), |
448 *lit->this_property_assignments()); | 442 *lit->this_property_assignments()); |
449 | 443 |
450 // Check the function has compiled code. | 444 // Check the function has compiled code. |
451 ASSERT(shared->is_compiled()); | 445 ASSERT(shared->is_compiled()); |
452 return true; | 446 return true; |
453 } | 447 } |
454 | 448 |
455 | 449 |
456 #ifndef V8_TARGET_ARCH_ARM | |
457 | |
458 CodeGenSelector::CodeGenTag CodeGenSelector::Select(FunctionLiteral* fun) { | 450 CodeGenSelector::CodeGenTag CodeGenSelector::Select(FunctionLiteral* fun) { |
459 Scope* scope = fun->scope(); | 451 Scope* scope = fun->scope(); |
460 | 452 |
461 if (!scope->is_global_scope()) return NORMAL; | 453 if (!scope->is_global_scope()) return NORMAL; |
462 ASSERT(scope->num_heap_slots() == 0); | 454 ASSERT(scope->num_heap_slots() == 0); |
463 ASSERT(scope->arguments() == NULL); | 455 ASSERT(scope->arguments() == NULL); |
464 | 456 |
465 if (!scope->declarations()->is_empty()) return NORMAL; | 457 if (!scope->declarations()->is_empty()) return NORMAL; |
466 if (fun->materialized_literal_count() > 0) return NORMAL; | 458 if (fun->materialized_literal_count() > 0) return NORMAL; |
467 if (fun->body()->is_empty()) return NORMAL; | 459 if (fun->body()->is_empty()) return NORMAL; |
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711 } | 703 } |
712 | 704 |
713 | 705 |
714 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) { | 706 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) { |
715 BAILOUT("ThisFunction"); | 707 BAILOUT("ThisFunction"); |
716 } | 708 } |
717 | 709 |
718 #undef BAILOUT | 710 #undef BAILOUT |
719 #undef CHECK_BAILOUT | 711 #undef CHECK_BAILOUT |
720 | 712 |
721 #endif // !defined(V8_TARGET_ARCH_ARM) | |
722 | |
723 | 713 |
724 } } // namespace v8::internal | 714 } } // namespace v8::internal |
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