michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef jit_JitOptions_h
michael@0: #define jit_JitOptions_h
michael@0: 
michael@0: #include "jit/IonTypes.h"
michael@0: #include "js/TypeDecls.h"
michael@0: 
michael@0: #ifdef JS_ION
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: // Longer scripts can only be compiled off thread, as these compilations
michael@0: // can be expensive and stall the main thread for too long.
michael@0: static const uint32_t MAX_OFF_THREAD_SCRIPT_SIZE = 100 * 1000;
michael@0: static const uint32_t MAX_MAIN_THREAD_SCRIPT_SIZE = 2 * 1000;
michael@0: static const uint32_t MAX_MAIN_THREAD_LOCALS_AND_ARGS = 256;
michael@0: 
michael@0: // DOM Worker runtimes don't have off thread compilation, but can also compile
michael@0: // larger scripts since this doesn't stall the main thread.
michael@0: static const uint32_t MAX_DOM_WORKER_SCRIPT_SIZE = 16 * 1000;
michael@0: static const uint32_t MAX_DOM_WORKER_LOCALS_AND_ARGS = 2048;
michael@0: 
michael@0: // Possible register allocators which may be used.
michael@0: enum IonRegisterAllocator {
michael@0:     RegisterAllocator_LSRA,
michael@0:     RegisterAllocator_Backtracking,
michael@0:     RegisterAllocator_Stupid
michael@0: };
michael@0: 
michael@0: enum IonGvnKind {
michael@0:     GVN_Optimistic,
michael@0:     GVN_Pessimistic
michael@0: };
michael@0: 
michael@0: struct JitOptions
michael@0: {
michael@0:     bool checkGraphConsistency;
michael@0: #ifdef CHECK_OSIPOINT_REGISTERS
michael@0:     bool checkOsiPointRegisters;
michael@0: #endif
michael@0:     bool checkRangeAnalysis;
michael@0:     bool compileTryCatch;
michael@0:     bool disableGvn;
michael@0:     bool disableLicm;
michael@0:     bool disableInlining;
michael@0:     bool disableEdgeCaseAnalysis;
michael@0:     bool disableRangeAnalysis;
michael@0:     bool disableUce;
michael@0:     bool disableEaa;
michael@0:     bool eagerCompilation;
michael@0:     bool forceDefaultIonUsesBeforeCompile;
michael@0:     uint32_t forcedDefaultIonUsesBeforeCompile;
michael@0:     bool forceGvnKind;
michael@0:     IonGvnKind forcedGvnKind;
michael@0:     bool forceRegisterAllocator;
michael@0:     IonRegisterAllocator forcedRegisterAllocator;
michael@0:     bool limitScriptSize;
michael@0:     bool osr;
michael@0:     uint32_t baselineUsesBeforeCompile;
michael@0:     uint32_t exceptionBailoutThreshold;
michael@0:     uint32_t frequentBailoutThreshold;
michael@0:     uint32_t maxStackArgs;
michael@0:     uint32_t osrPcMismatchesBeforeRecompile;
michael@0:     uint32_t smallFunctionMaxBytecodeLength_;
michael@0:     uint32_t usesBeforeCompilePar;
michael@0:     bool profileInlineFrames;
michael@0: 
michael@0:     JitOptions();
michael@0:     bool isSmallFunction(JSScript *script) const;
michael@0:     void setEagerCompilation();
michael@0:     void setUsesBeforeCompile(uint32_t useCount);
michael@0:     void resetUsesBeforeCompile();
michael@0: };
michael@0: 
michael@0: extern JitOptions js_JitOptions;
michael@0: 
michael@0: } // namespace jit
michael@0: } // namespace js
michael@0: 
michael@0: #endif // JS_ION
michael@0: 
michael@0: #endif /* jit_JitOptions_h */