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1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
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2 * vim: set ts=8 sts=4 et sw=4 tw=99: |
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3 * This Source Code Form is subject to the terms of the Mozilla Public |
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4 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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6 |
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7 #ifndef jit_JitOptions_h |
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8 #define jit_JitOptions_h |
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9 |
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10 #include "jit/IonTypes.h" |
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11 #include "js/TypeDecls.h" |
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12 |
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13 #ifdef JS_ION |
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14 |
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15 namespace js { |
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16 namespace jit { |
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17 |
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18 // Longer scripts can only be compiled off thread, as these compilations |
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19 // can be expensive and stall the main thread for too long. |
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20 static const uint32_t MAX_OFF_THREAD_SCRIPT_SIZE = 100 * 1000; |
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21 static const uint32_t MAX_MAIN_THREAD_SCRIPT_SIZE = 2 * 1000; |
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22 static const uint32_t MAX_MAIN_THREAD_LOCALS_AND_ARGS = 256; |
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23 |
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24 // DOM Worker runtimes don't have off thread compilation, but can also compile |
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25 // larger scripts since this doesn't stall the main thread. |
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26 static const uint32_t MAX_DOM_WORKER_SCRIPT_SIZE = 16 * 1000; |
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27 static const uint32_t MAX_DOM_WORKER_LOCALS_AND_ARGS = 2048; |
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28 |
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29 // Possible register allocators which may be used. |
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30 enum IonRegisterAllocator { |
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31 RegisterAllocator_LSRA, |
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32 RegisterAllocator_Backtracking, |
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33 RegisterAllocator_Stupid |
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34 }; |
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35 |
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36 enum IonGvnKind { |
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37 GVN_Optimistic, |
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38 GVN_Pessimistic |
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39 }; |
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40 |
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41 struct JitOptions |
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42 { |
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43 bool checkGraphConsistency; |
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44 #ifdef CHECK_OSIPOINT_REGISTERS |
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45 bool checkOsiPointRegisters; |
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46 #endif |
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47 bool checkRangeAnalysis; |
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48 bool compileTryCatch; |
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49 bool disableGvn; |
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50 bool disableLicm; |
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51 bool disableInlining; |
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52 bool disableEdgeCaseAnalysis; |
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53 bool disableRangeAnalysis; |
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54 bool disableUce; |
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55 bool disableEaa; |
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56 bool eagerCompilation; |
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57 bool forceDefaultIonUsesBeforeCompile; |
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58 uint32_t forcedDefaultIonUsesBeforeCompile; |
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59 bool forceGvnKind; |
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60 IonGvnKind forcedGvnKind; |
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61 bool forceRegisterAllocator; |
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62 IonRegisterAllocator forcedRegisterAllocator; |
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63 bool limitScriptSize; |
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64 bool osr; |
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65 uint32_t baselineUsesBeforeCompile; |
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66 uint32_t exceptionBailoutThreshold; |
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67 uint32_t frequentBailoutThreshold; |
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68 uint32_t maxStackArgs; |
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69 uint32_t osrPcMismatchesBeforeRecompile; |
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70 uint32_t smallFunctionMaxBytecodeLength_; |
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71 uint32_t usesBeforeCompilePar; |
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72 bool profileInlineFrames; |
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73 |
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74 JitOptions(); |
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75 bool isSmallFunction(JSScript *script) const; |
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76 void setEagerCompilation(); |
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77 void setUsesBeforeCompile(uint32_t useCount); |
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78 void resetUsesBeforeCompile(); |
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79 }; |
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80 |
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81 extern JitOptions js_JitOptions; |
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82 |
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83 } // namespace jit |
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84 } // namespace js |
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85 |
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86 #endif // JS_ION |
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87 |
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88 #endif /* jit_JitOptions_h */ |