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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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| 194 // CodeGenerator | 194 // CodeGenerator |
| 195 | 195 |
| 196 class CodeGenerator: public AstVisitor { | 196 class CodeGenerator: public AstVisitor { |
| 197 public: | 197 public: |
| 198 // Takes a function literal, generates code for it. This function should only | 198 // Takes a function literal, generates code for it. This function should only |
| 199 // be called by compiler.cc. | 199 // be called by compiler.cc. |
| 200 static Handle<Code> MakeCode(FunctionLiteral* fun, | 200 static Handle<Code> MakeCode(FunctionLiteral* fun, |
| 201 Handle<Script> script, | 201 Handle<Script> script, |
| 202 bool is_eval); | 202 bool is_eval); |
| 203 | 203 |
| 204 static bool ShouldGenerateLog(Expression* type); |
| 205 |
| 204 static void SetFunctionInfo(Handle<JSFunction> fun, | 206 static void SetFunctionInfo(Handle<JSFunction> fun, |
| 205 int length, | 207 int length, |
| 206 int function_token_position, | 208 int function_token_position, |
| 207 int start_position, | 209 int start_position, |
| 208 int end_position, | 210 int end_position, |
| 209 bool is_expression, | 211 bool is_expression, |
| 210 bool is_toplevel, | 212 bool is_toplevel, |
| 211 Handle<Script> script); | 213 Handle<Script> script); |
| 212 | 214 |
| 213 // Accessors | 215 // Accessors |
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| 341 // Support for accessing the value field of an object (used by Date). | 343 // Support for accessing the value field of an object (used by Date). |
| 342 void GenerateValueOf(ZoneList<Expression*>* args); | 344 void GenerateValueOf(ZoneList<Expression*>* args); |
| 343 void GenerateSetValueOf(ZoneList<Expression*>* args); | 345 void GenerateSetValueOf(ZoneList<Expression*>* args); |
| 344 | 346 |
| 345 // Fast support for charCodeAt(n). | 347 // Fast support for charCodeAt(n). |
| 346 void GenerateFastCharCodeAt(ZoneList<Expression*>* args); | 348 void GenerateFastCharCodeAt(ZoneList<Expression*>* args); |
| 347 | 349 |
| 348 // Fast support for object equality testing. | 350 // Fast support for object equality testing. |
| 349 void GenerateObjectEquals(ZoneList<Expression*>* args); | 351 void GenerateObjectEquals(ZoneList<Expression*>* args); |
| 350 | 352 |
| 353 void GenerateLog(ZoneList<Expression*>* args); |
| 354 |
| 351 | 355 |
| 352 // Methods and constants for fast case switch statement support. | 356 // Methods and constants for fast case switch statement support. |
| 353 // | 357 // |
| 354 // Only allow fast-case switch if the range of labels is at most | 358 // Only allow fast-case switch if the range of labels is at most |
| 355 // this factor times the number of case labels. | 359 // this factor times the number of case labels. |
| 356 // Value is derived from comparing the size of code generated by the normal | 360 // Value is derived from comparing the size of code generated by the normal |
| 357 // switch code for Smi-labels to the size of a single pointer. If code | 361 // switch code for Smi-labels to the size of a single pointer. If code |
| 358 // quality increases this number should be decreased to match. | 362 // quality increases this number should be decreased to match. |
| 359 static const int kFastSwitchMaxOverheadFactor = 5; | 363 static const int kFastSwitchMaxOverheadFactor = 5; |
| 360 | 364 |
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| 428 friend class VirtualFrame; | 432 friend class VirtualFrame; |
| 429 friend class Reference; | 433 friend class Reference; |
| 430 | 434 |
| 431 DISALLOW_COPY_AND_ASSIGN(CodeGenerator); | 435 DISALLOW_COPY_AND_ASSIGN(CodeGenerator); |
| 432 }; | 436 }; |
| 433 | 437 |
| 434 | 438 |
| 435 } } // namespace v8::internal | 439 } } // namespace v8::internal |
| 436 | 440 |
| 437 #endif // V8_CODEGEN_IA32_H_ | 441 #endif // V8_CODEGEN_IA32_H_ |
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