diff options
Diffstat (limited to 'llvm/tools/llvm-xray/xray-graph.cpp')
| -rw-r--r-- | llvm/tools/llvm-xray/xray-graph.cpp | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/llvm/tools/llvm-xray/xray-graph.cpp b/llvm/tools/llvm-xray/xray-graph.cpp index f836f9ba54fc..522609b938f2 100644 --- a/llvm/tools/llvm-xray/xray-graph.cpp +++ b/llvm/tools/llvm-xray/xray-graph.cpp @@ -163,6 +163,30 @@ static void updateStat(GraphRenderer::TimeStat &S, int64_t L) { S.Sum += L; } +// Labels in a DOT graph must be legal XML strings so it's necessary to escape +// certain characters. +static std::string escapeString(StringRef Label) { + std::string Str; + Str.reserve(Label.size()); + for (const auto C : Label) { + switch (C) { + case '&': + Str.append("&"); + break; + case '<': + Str.append("<"); + break; + case '>': + Str.append(">"); + break; + default: + Str.push_back(C); + break; + } + } + return Str; +} + // Evaluates an XRay record and performs accounting on it. // // If the record is an ENTER record it pushes the FuncID and TSC onto a @@ -398,8 +422,9 @@ void GraphRenderer::exportGraphAsDOT(raw_ostream &OS, StatType ET, StatType EC, if (V.first == 0) continue; OS << "F" << V.first << " [label=\"" << (VT != StatType::NONE ? "{" : "") - << (VA.SymbolName.size() > 40 ? VA.SymbolName.substr(0, 40) + "..." - : VA.SymbolName); + << escapeString(VA.SymbolName.size() > 40 + ? VA.SymbolName.substr(0, 40) + "..." + : VA.SymbolName); if (VT != StatType::NONE) OS << "|" << VA.S.getString(VT) << "}\""; else |