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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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| 274 | 274 |
| 275 // Callback function on inline caches, used for iterating over inline caches | 275 // Callback function on inline caches, used for iterating over inline caches |
| 276 // in compiled code. | 276 // in compiled code. |
| 277 typedef void (*InlineCacheCallback)(Code* code, Address ic); | 277 typedef void (*InlineCacheCallback)(Code* code, Address ic); |
| 278 | 278 |
| 279 | 279 |
| 280 // State for inline cache call sites. Aliased as IC::State. | 280 // State for inline cache call sites. Aliased as IC::State. |
| 281 enum InlineCacheState { | 281 enum InlineCacheState { |
| 282 // Has never been executed. | 282 // Has never been executed. |
| 283 UNINITIALIZED, | 283 UNINITIALIZED, |
| 284 // Has never been executed, but is in a loop. |
| 285 UNINITIALIZED_IN_LOOP, |
| 284 // Has been executed but monomorhic state has been delayed. | 286 // Has been executed but monomorhic state has been delayed. |
| 285 PREMONOMORPHIC, | 287 PREMONOMORPHIC, |
| 286 // Has been executed and only one receiver type has been seen. | 288 // Has been executed and only one receiver type has been seen. |
| 287 MONOMORPHIC, | 289 MONOMORPHIC, |
| 288 // Like MONOMORPHIC but check failed due to prototype. | 290 // Like MONOMORPHIC but check failed due to prototype. |
| 289 MONOMORPHIC_PROTOTYPE_FAILURE, | 291 MONOMORPHIC_PROTOTYPE_FAILURE, |
| 290 // Multiple receiver types have been seen. | 292 // Multiple receiver types have been seen. |
| 291 MEGAMORPHIC, | 293 MEGAMORPHIC, |
| 292 // Special states for debug break or step in prepare stubs. | 294 // Special states for debug break or step in prepare stubs. |
| 293 DEBUG_BREAK, | 295 DEBUG_BREAK, |
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| 496 | 498 |
| 497 Dest dest; | 499 Dest dest; |
| 498 memcpy(&dest, &source, sizeof(dest)); | 500 memcpy(&dest, &source, sizeof(dest)); |
| 499 return dest; | 501 return dest; |
| 500 } | 502 } |
| 501 | 503 |
| 502 | 504 |
| 503 } } // namespace v8::internal | 505 } } // namespace v8::internal |
| 504 | 506 |
| 505 #endif // V8_GLOBALS_H_ | 507 #endif // V8_GLOBALS_H_ |
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