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Speed up isBytecodeLPath from 20s to .01s in common cases. This makes -native
not completely painful to use. Once we decide a directory has a bytecode library, we know it this function returns true, no need to scan entire directories. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23405 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -148,49 +148,43 @@ static bool isBytecodeLibrary(const sys::Path &FullPath) {
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}
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static bool isBytecodeLPath(const std::string &LibPath) {
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bool isBytecodeLPath = false;
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sys::Path LPath(LibPath);
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// Make sure it exists
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if (!LPath.exists())
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return isBytecodeLPath;
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// Make sure its a directory
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// Make sure it exists and is a directory
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try {
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if (!LPath.isDirectory())
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return isBytecodeLPath;
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if (!LPath.exists() || !LPath.isDirectory())
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return false;
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} catch (std::string& xcptn) {
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return isBytecodeLPath;
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return false;
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}
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// Grab the contents of the -L path
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std::set<sys::Path> Files;
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LPath.getDirectoryContents(Files);
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// Iterate over the contents one by one to determine
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// if this -L path has any bytecode shared libraries
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// or archives
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std::set<sys::Path>::iterator File = Files.begin();
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std::string dllsuffix = sys::Path::GetDLLSuffix();
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for (; File != Files.end(); ++File) {
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if ( File->isDirectory() )
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continue;
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std::string path = File->toString();
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std::string dllsuffix = sys::Path::GetDLLSuffix();
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// Check for an ending '.dll,.so' or '.a' suffix as all
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// other files are not of interest to us here
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if ( path.find(dllsuffix, path.size()-dllsuffix.size()) == std::string::npos
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&& path.find(".a", path.size()-2) == std::string::npos )
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if (path.find(dllsuffix, path.size()-dllsuffix.size()) == std::string::npos
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&& path.find(".a", path.size()-2) == std::string::npos)
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continue;
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// Finally, check to see if the file is a true bytecode file
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if (isBytecodeLibrary(*File))
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isBytecodeLPath = true;
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return true;
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}
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return isBytecodeLPath;
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return false;
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}
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/// GenerateBytecode - generates a bytecode file from the specified module.
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