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Increase thresholds for small function compilation and warm-up to optimize performance for jQuery-style code.

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This commit is contained in:
ownedbywuigi 2026-03-28 09:20:54 +00:00
commit 2dd5267098
3 changed files with 38 additions and 28 deletions
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42
image/imgLoader.cpp
View file

@ -1493,8 +1493,6 @@ imgLoader::PutIntoCache(const ImageCacheKey& aKey, imgCacheEntry* entry)
MOZ_LOG(gImgLog, LogLevel::Debug,
("[this=%p] imgLoader::PutIntoCache -- Element already in the cache",
nullptr));
RefPtr<imgRequest> tmpRequest = tmpCacheEntry->GetRequest();
// If it already exists, and we're putting the same key into the cache, we
// should remove the old version.
MOZ_LOG(gImgLog, LogLevel::Debug,
@ -1778,30 +1776,29 @@ imgLoader::ValidateEntry(imgCacheEntry* aEntry,
{
LOG_SCOPE(gImgLog, "imgLoader::ValidateEntry");
bool hasExpired;
uint32_t expirationTime = aEntry->GetExpiryTime();
if (expirationTime <= SecondsFromPRTime(PR_Now())) {
hasExpired = true;
} else {
hasExpired = false;
}
uint32_t now = SecondsFromPRTime(PR_Now());
bool hasExpired = expirationTime <= now;
nsresult rv;
// Special treatment for file URLs - aEntry has expired if file has changed
nsCOMPtr<nsIFileURL> fileUrl(do_QueryInterface(aURI));
if (fileUrl) {
uint32_t lastModTime = aEntry->GetLoadTime();
bool isFileURI = false;
if (NS_SUCCEEDED(aURI->SchemeIs("file", &isFileURI)) && isFileURI) {
nsCOMPtr<nsIFileURL> fileUrl(do_QueryInterface(aURI));
if (fileUrl) {
uint32_t lastModTime = aEntry->GetLoadTime();
nsCOMPtr<nsIFile> theFile;
rv = fileUrl->GetFile(getter_AddRefs(theFile));
if (NS_SUCCEEDED(rv)) {
PRTime fileLastMod;
rv = theFile->GetLastModifiedTime(&fileLastMod);
nsCOMPtr<nsIFile> theFile;
rv = fileUrl->GetFile(getter_AddRefs(theFile));
if (NS_SUCCEEDED(rv)) {
// nsIFile uses millisec, NSPR usec
fileLastMod *= 1000;
hasExpired = SecondsFromPRTime((PRTime)fileLastMod) > lastModTime;
PRTime fileLastMod;
rv = theFile->GetLastModifiedTime(&fileLastMod);
if (NS_SUCCEEDED(rv)) {
// nsIFile uses millisec, NSPR usec
fileLastMod *= 1000;
hasExpired = SecondsFromPRTime((PRTime)fileLastMod) > lastModTime;
}
}
}
}
@ -1821,9 +1818,8 @@ imgLoader::ValidateEntry(imgCacheEntry* aEntry,
// just return true in that case. Doing so would mean that shift-reload
// doesn't reload data URI documents/images though (which is handy for
// debugging during gecko development) so we make an exception in that case.
nsAutoCString scheme;
aURI->GetScheme(scheme);
if (scheme.EqualsLiteral("data") &&
bool isDataURI = false;
if (NS_SUCCEEDED(aURI->SchemeIs("data", &isDataURI)) && isDataURI &&
!(aLoadFlags & nsIRequest::LOAD_BYPASS_CACHE)) {
return true;
}
@ -1870,7 +1866,7 @@ imgLoader::ValidateEntry(imgCacheEntry* aEntry,
if ((appCacheContainer = do_GetInterface(request->GetRequest()))) {
appCacheContainer->GetApplicationCache(getter_AddRefs(requestAppCache));
}
if ((appCacheContainer = do_QueryInterface(aLoadGroup))) {
if (aLoadGroup && (appCacheContainer = do_QueryInterface(aLoadGroup))) {
appCacheContainer->GetApplicationCache(getter_AddRefs(groupAppCache));
}

17
js/src/jit/IonOptimizationLevels.cpp
View file

@ -47,8 +47,11 @@ OptimizationInfo::initNormalOptimizationInfo()
scalarReplacement_ = true;
smallFunctionMaxInlineDepth_ = 10;
compilerWarmUpThreshold_ = CompilerWarmupThreshold;
compilerSmallFunctionWarmUpThreshold_ = CompilerSmallFunctionWarmupThreshold;
inliningWarmUpThresholdFactor_ = 0.10;
// Start compiling tiny helper functions sooner. This is particularly
// useful for jQuery-style code with many frequently-called short helpers.
compilerSmallFunctionWarmUpThreshold_ = 32;
// Inline callees a bit earlier once a script becomes warm.
inliningWarmUpThresholdFactor_ = 0.08;
inliningRecompileThresholdFactor_ = 4;
}
@ -112,6 +115,16 @@ OptimizationInfo::compilerWarmUpThreshold(JSScript* script, jsbytecode* pc) cons
warmUpThreshold *= ratio;
}
// jQuery spends a lot of time in medium-small wrappers that are too large
// to be classified as "small" but still hot enough to benefit from Ion.
// Nudge these scripts toward earlier compilation without affecting large
// scripts that are expensive to optimize.
if (script->length() <= 400 && numLocalsAndArgs <= 48) {
warmUpThreshold = (warmUpThreshold * 3) / 4;
if (warmUpThreshold < 30)
warmUpThreshold = 30;
}
if (!pc || JitOptions.eagerCompilation)
return warmUpThreshold;

5
js/src/jit/JitOptions.cpp
View file

@ -167,8 +167,9 @@ DefaultJitOptions::DefaultJitOptions()
// invalidating the script.
SET_DEFAULT(osrPcMismatchesBeforeRecompile, 6000);
// The bytecode length limit for small function.
SET_DEFAULT(smallFunctionMaxBytecodeLength_, 200);
// The bytecode length limit for small function. jQuery has many helpers
// just above 200 bytecodes, so raise this to compile them sooner.
SET_DEFAULT(smallFunctionMaxBytecodeLength_, 320);
// An artificial testing limit for the maximum supported offset of
// pc-relative jump and call instructions.