diff options
Diffstat (limited to 'lib/CodeGen/CGDebugInfo.cpp')
| -rw-r--r-- | lib/CodeGen/CGDebugInfo.cpp | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp index d8a9f36c82..0e789c92d6 100644 --- a/lib/CodeGen/CGDebugInfo.cpp +++ b/lib/CodeGen/CGDebugInfo.cpp @@ -88,17 +88,35 @@ llvm::StringRef CGDebugInfo::getFunctionName(const FunctionDecl *FD) { /// getOrCreateFile - Get the file debug info descriptor for the input location. llvm::DIFile CGDebugInfo::getOrCreateFile(SourceLocation Loc) { - if (!Loc.isValid()) + if (!Loc.isValid()) // If Location is not valid then use main input file. return DebugFactory.CreateFile(TheCU.getFilename(), TheCU.getDirectory(), TheCU); SourceManager &SM = CGM.getContext().getSourceManager(); PresumedLoc PLoc = SM.getPresumedLoc(Loc); + + // Cache the results. + const char *fname = PLoc.getFilename(); + llvm::DenseMap<const char *, llvm::WeakVH>::iterator it = + DIFileCache.find(fname); + + if (it != DIFileCache.end()) { + // Verify that the information still exists. + if (&*it->second) + return llvm::DIFile(cast<llvm::MDNode>(it->second)); + } + + // FIXME: We shouldn't even need to call 'makeAbsolute()' in the cases + // where we can consult the FileEntry. llvm::sys::Path AbsFileName(PLoc.getFilename()); AbsFileName.makeAbsolute(); - return DebugFactory.CreateFile(AbsFileName.getLast(), - AbsFileName.getDirname(), TheCU); + llvm::DIFile F = DebugFactory.CreateFile(AbsFileName.getLast(), + AbsFileName.getDirname(), TheCU); + + DIFileCache[fname] = F.getNode(); + return F; + } /// CreateCompileUnit - Create new compile unit. void CGDebugInfo::CreateCompileUnit() { |