1 files changed, 110 insertions, 0 deletions
diff --git a/js/src/jit/JitOptions.h b/js/src/jit/JitOptions.h
new file mode 100644
index 000000000..076980b4e
--- /dev/null
+++ b/js/src/jit/JitOptions.h
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_JitOptions_h
+#define jit_JitOptions_h
+
+#include "mozilla/Maybe.h"
+
+#include "jit/IonTypes.h"
+#include "js/TypeDecls.h"
+
+namespace js {
+namespace jit {
+
+// Longer scripts can only be compiled off thread, as these compilations
+// can be expensive and stall the main thread for too long.
+static const uint32_t MAX_MAIN_THREAD_SCRIPT_SIZE = 2 * 1000;
+static const uint32_t MAX_MAIN_THREAD_LOCALS_AND_ARGS = 256;
+
+// Possible register allocators which may be used.
+enum IonRegisterAllocator {
+    RegisterAllocator_Backtracking,
+    RegisterAllocator_Testbed,
+    RegisterAllocator_Stupid
+};
+
+static inline mozilla::Maybe<IonRegisterAllocator>
+LookupRegisterAllocator(const char* name)
+{
+    if (!strcmp(name, "backtracking"))
+        return mozilla::Some(RegisterAllocator_Backtracking);
+    if (!strcmp(name, "testbed"))
+        return mozilla::Some(RegisterAllocator_Testbed);
+    if (!strcmp(name, "stupid"))
+        return mozilla::Some(RegisterAllocator_Stupid);
+    return mozilla::Nothing();
+}
+
+struct DefaultJitOptions
+{
+    bool checkGraphConsistency;
+#ifdef CHECK_OSIPOINT_REGISTERS
+    bool checkOsiPointRegisters;
+#endif
+    bool checkRangeAnalysis;
+    bool runExtraChecks;
+    bool disableInlineBacktracking;
+    bool disableAma;
+    bool disableEaa;
+    bool disableEagerSimdUnbox;
+    bool disableEdgeCaseAnalysis;
+    bool disableFlowAA;
+    bool disableGvn;
+    bool disableInlining;
+    bool disableLicm;
+    bool disableLoopUnrolling;
+    bool disablePgo;
+    bool disableInstructionReordering;
+    bool disableRangeAnalysis;
+    bool disableRecoverIns;
+    bool disableScalarReplacement;
+    bool disableCacheIR;
+    bool disableSharedStubs;
+    bool disableSincos;
+    bool disableSink;
+    bool eagerCompilation;
+    bool forceInlineCaches;
+    bool limitScriptSize;
+    bool osr;
+    bool asmJSAtomicsEnable;
+    bool wasmTestMode;
+    bool wasmAlwaysCheckBounds;
+    bool wasmFoldOffsets;
+    bool ionInterruptWithoutSignals;
+    uint32_t baselineWarmUpThreshold;
+    uint32_t exceptionBailoutThreshold;
+    uint32_t frequentBailoutThreshold;
+    uint32_t maxStackArgs;
+    uint32_t osrPcMismatchesBeforeRecompile;
+    uint32_t smallFunctionMaxBytecodeLength_;
+    uint32_t jumpThreshold;
+    uint32_t branchPruningHitCountFactor;
+    uint32_t branchPruningInstFactor;
+    uint32_t branchPruningBlockSpanFactor;
+    uint32_t branchPruningEffectfulInstFactor;
+    uint32_t branchPruningThreshold;
+    mozilla::Maybe<uint32_t> forcedDefaultIonWarmUpThreshold;
+    mozilla::Maybe<uint32_t> forcedDefaultIonSmallFunctionWarmUpThreshold;
+    mozilla::Maybe<IonRegisterAllocator> forcedRegisterAllocator;
+
+    // The options below affect the rest of the VM, and not just the JIT.
+    bool disableUnboxedObjects;
+
+    DefaultJitOptions();
+    bool isSmallFunction(JSScript* script) const;
+    void setEagerCompilation();
+    void setCompilerWarmUpThreshold(uint32_t warmUpThreshold);
+    void resetCompilerWarmUpThreshold();
+    void enableGvn(bool val);
+};
+
+extern DefaultJitOptions JitOptions;
+
+} // namespace jit
+} // namespace js
+
+#endif /* jit_JitOptions_h */