The Tor Browser: js/src/jit/JitOptions.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef jit_JitOptions_h

     8 #define jit_JitOptions_h

    10 #include "jit/IonTypes.h"

    11 #include "js/TypeDecls.h"

    13 #ifdef JS_ION

    15 namespace js {

    16 namespace jit {

    18 // Longer scripts can only be compiled off thread, as these compilations

    19 // can be expensive and stall the main thread for too long.

    20 static const uint32_t MAX_OFF_THREAD_SCRIPT_SIZE = 100 * 1000;

    21 static const uint32_t MAX_MAIN_THREAD_SCRIPT_SIZE = 2 * 1000;

    22 static const uint32_t MAX_MAIN_THREAD_LOCALS_AND_ARGS = 256;

    24 // DOM Worker runtimes don't have off thread compilation, but can also compile

    25 // larger scripts since this doesn't stall the main thread.

    26 static const uint32_t MAX_DOM_WORKER_SCRIPT_SIZE = 16 * 1000;

    27 static const uint32_t MAX_DOM_WORKER_LOCALS_AND_ARGS = 2048;

    29 // Possible register allocators which may be used.

    30 enum IonRegisterAllocator {

    31     RegisterAllocator_LSRA,

    32     RegisterAllocator_Backtracking,

    33     RegisterAllocator_Stupid

    34 };

    36 enum IonGvnKind {

    37     GVN_Optimistic,

    38     GVN_Pessimistic

    39 };

    41 struct JitOptions

    42 {

    43     bool checkGraphConsistency;

    44 #ifdef CHECK_OSIPOINT_REGISTERS

    45     bool checkOsiPointRegisters;

    46 #endif

    47     bool checkRangeAnalysis;

    48     bool compileTryCatch;

    49     bool disableGvn;

    50     bool disableLicm;

    51     bool disableInlining;

    52     bool disableEdgeCaseAnalysis;

    53     bool disableRangeAnalysis;

    54     bool disableUce;

    55     bool disableEaa;

    56     bool eagerCompilation;

    57     bool forceDefaultIonUsesBeforeCompile;

    58     uint32_t forcedDefaultIonUsesBeforeCompile;

    59     bool forceGvnKind;

    60     IonGvnKind forcedGvnKind;

    61     bool forceRegisterAllocator;

    62     IonRegisterAllocator forcedRegisterAllocator;

    63     bool limitScriptSize;

    64     bool osr;

    65     uint32_t baselineUsesBeforeCompile;

    66     uint32_t exceptionBailoutThreshold;

    67     uint32_t frequentBailoutThreshold;

    68     uint32_t maxStackArgs;

    69     uint32_t osrPcMismatchesBeforeRecompile;

    70     uint32_t smallFunctionMaxBytecodeLength_;

    71     uint32_t usesBeforeCompilePar;

    72     bool profileInlineFrames;

    74     JitOptions();

    75     bool isSmallFunction(JSScript *script) const;

    76     void setEagerCompilation();

    77     void setUsesBeforeCompile(uint32_t useCount);

    78     void resetUsesBeforeCompile();

    79 };

    81 extern JitOptions js_JitOptions;

    83 } // namespace jit

    84 } // namespace js

    86 #endif // JS_ION

    88 #endif /* jit_JitOptions_h */

The Tor Browser / file revision