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Add JIT warm-up threshold preferences for baseline and ion compilation

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ownedbywuigi 2026-03-28 07:34:59 +00:00
commit 6f4da14ee2
2 changed files with 24 additions and 2 deletions
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21
js/xpconnect/src/XPCJSContext.cpp
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@ -1426,6 +1426,10 @@ ReloadPrefsCallback(const char* pref, void* data)
bool useBaselineEager = Preferences::GetBool(JS_OPTIONS_DOT_STR
"baselinejit.unsafe_eager_compilation");
bool useIonEager = Preferences::GetBool(JS_OPTIONS_DOT_STR "ion.unsafe_eager_compilation");
int32_t baselineWarmUpThreshold = Preferences::GetInt(JS_OPTIONS_DOT_STR
"baselinejit.threshold", -1);
int32_t ionWarmUpThreshold = Preferences::GetInt(JS_OPTIONS_DOT_STR
"ion.threshold", -1);
sDiscardSystemSource = Preferences::GetBool(JS_OPTIONS_DOT_STR "discardSystemSource");
@ -1472,10 +1476,23 @@ ReloadPrefsCallback(const char* pref, void* data)
JS_SetParallelParsingEnabled(cx, parallelParsing);
JS_SetOffthreadIonCompilationEnabled(cx, offthreadIonCompilation);
// -1 means "use engine default".
if (baselineWarmUpThreshold < -1)
baselineWarmUpThreshold = -1;
if (ionWarmUpThreshold < -1)
ionWarmUpThreshold = -1;
// Eager compilation prefs still override threshold prefs.
if (useBaselineEager)
baselineWarmUpThreshold = 0;
if (useIonEager)
ionWarmUpThreshold = 0;
JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_BASELINE_WARMUP_TRIGGER,
useBaselineEager ? 0 : -1);
baselineWarmUpThreshold);
JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_ION_WARMUP_TRIGGER,
useIonEager ? 0 : -1);
ionWarmUpThreshold);
JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_UNBOXED_OBJECTS,
unboxedObjects);
JS_SetGlobalJitCompilerOption(cx, JSJITCOMPILER_ION_INLINING,