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| 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 
| 2 // All Rights Reserved. | 2 // All Rights Reserved. | 
| 3 // | 3 // | 
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without | 
| 5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are | 
| 6 // met: | 6 // met: | 
| 7 // | 7 // | 
| 8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, | 
| 9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. | 
| 10 // | 10 // | 
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| 456   static bool IsSupported(CpuFeature f) { | 456   static bool IsSupported(CpuFeature f) { | 
| 457     if (Check(f, cross_compile_)) return true; | 457     if (Check(f, cross_compile_)) return true; | 
| 458     ASSERT(initialized_); | 458     ASSERT(initialized_); | 
| 459     if (f == SSE3 && !FLAG_enable_sse3) return false; | 459     if (f == SSE3 && !FLAG_enable_sse3) return false; | 
| 460     if (f == SSE4_1 && !FLAG_enable_sse4_1) return false; | 460     if (f == SSE4_1 && !FLAG_enable_sse4_1) return false; | 
| 461     if (f == CMOV && !FLAG_enable_cmov) return false; | 461     if (f == CMOV && !FLAG_enable_cmov) return false; | 
| 462     if (f == SAHF && !FLAG_enable_sahf) return false; | 462     if (f == SAHF && !FLAG_enable_sahf) return false; | 
| 463     return Check(f, supported_); | 463     return Check(f, supported_); | 
| 464   } | 464   } | 
| 465 | 465 | 
| 466   static bool IsFoundByRuntimeProbingOnly(CpuFeature f) { |  | 
| 467     ASSERT(initialized_); |  | 
| 468     return Check(f, found_by_runtime_probing_only_); |  | 
| 469   } |  | 
| 470 |  | 
| 471   static bool IsSafeForSnapshot(Isolate* isolate, CpuFeature f) { | 466   static bool IsSafeForSnapshot(Isolate* isolate, CpuFeature f) { | 
| 472     return Check(f, cross_compile_) || | 467     return Check(f, cross_compile_) || | 
| 473            (IsSupported(f) && | 468            (IsSupported(f) && | 
| 474             (!Serializer::enabled(isolate) || !IsFoundByRuntimeProbingOnly(f))); | 469             !(Serializer::enabled(isolate) && | 
|  | 470               Check(f, found_by_runtime_probing_only_))); | 
| 475   } | 471   } | 
| 476 | 472 | 
| 477   static bool VerifyCrossCompiling() { | 473   static bool VerifyCrossCompiling() { | 
| 478     return cross_compile_ == 0; | 474     return cross_compile_ == 0; | 
| 479   } | 475   } | 
| 480 | 476 | 
| 481   static bool VerifyCrossCompiling(CpuFeature f) { | 477   static bool VerifyCrossCompiling(CpuFeature f) { | 
| 482     uint64_t mask = flag2set(f); | 478     uint64_t mask = flag2set(f); | 
| 483     return cross_compile_ == 0 || | 479     return cross_compile_ == 0 || | 
| 484            (cross_compile_ & mask) == mask; | 480            (cross_compile_ & mask) == mask; | 
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| 1654  private: | 1650  private: | 
| 1655   Assembler* assembler_; | 1651   Assembler* assembler_; | 
| 1656 #ifdef DEBUG | 1652 #ifdef DEBUG | 
| 1657   int space_before_; | 1653   int space_before_; | 
| 1658 #endif | 1654 #endif | 
| 1659 }; | 1655 }; | 
| 1660 | 1656 | 
| 1661 } }  // namespace v8::internal | 1657 } }  // namespace v8::internal | 
| 1662 | 1658 | 
| 1663 #endif  // V8_X64_ASSEMBLER_X64_H_ | 1659 #endif  // V8_X64_ASSEMBLER_X64_H_ | 
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