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authorJustin Bogner <mail@justinbogner.com>2014-03-21 17:29:44 +0000
committerJustin Bogner <mail@justinbogner.com>2014-03-21 17:29:44 +0000
commit60bc906724af3537c8ef55a17179b7bbbdf1bbe0 (patch)
tree8c6239063c4577f2bb1d997b0f5d5f4c7f7e1006 /tools/llvm-profdata
parent0b50368e68cd2587027f47f8490b177200f8bdfe (diff)
llvm-profdata: Implement show command
The `llvm-profdata show` command summarizes a profdata file's contents in a human readable format. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204485 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-profdata')
-rw-r--r--tools/llvm-profdata/llvm-profdata.cpp100
1 files changed, 98 insertions, 2 deletions
diff --git a/tools/llvm-profdata/llvm-profdata.cpp b/tools/llvm-profdata/llvm-profdata.cpp
index 53dcf1602c9..d5fa4ac2884 100644
--- a/tools/llvm-profdata/llvm-profdata.cpp
+++ b/tools/llvm-profdata/llvm-profdata.cpp
@@ -88,6 +88,100 @@ int merge_main(int argc, const char *argv[]) {
return 0;
}
+struct HashPrinter {
+ uint64_t Hash;
+ HashPrinter(uint64_t Hash) : Hash(Hash) {}
+ void print(raw_ostream &OS) const {
+ char Buf[18], *Cur = Buf;
+ *Cur++ = '0'; *Cur++ = 'x';
+ for (unsigned I = 16; I;) {
+ char Digit = 0xF & (Hash >> (--I * 4));
+ *Cur++ = (Digit < 10 ? '0' + Digit : 'A' + Digit - 10);
+ }
+ OS.write(Buf, 18);
+ }
+};
+static raw_ostream &operator<<(raw_ostream &OS, const HashPrinter &Hash) {
+ Hash.print(OS);
+ return OS;
+}
+
+int show_main(int argc, const char *argv[]) {
+ cl::opt<std::string> Filename(cl::Positional, cl::Required,
+ cl::desc("<profdata-file>"));
+
+ cl::opt<bool> ShowCounts("counts", cl::init(false),
+ cl::desc("Show counter values for shown functions"));
+ cl::opt<bool> ShowAllFunctions("all-functions", cl::init(false),
+ cl::desc("Details for every function"));
+ cl::opt<std::string> ShowFunction("function",
+ cl::desc("Details for matching functions"));
+
+ cl::opt<std::string> OutputFilename("output", cl::value_desc("output"),
+ cl::init("-"),
+ cl::desc("Output file"));
+ cl::alias OutputFilenameA("o", cl::desc("Alias for --output"),
+ cl::aliasopt(OutputFilename));
+
+ cl::ParseCommandLineOptions(argc, argv, "LLVM profile data summary\n");
+
+ std::unique_ptr<InstrProfReader> Reader;
+ if (error_code EC = InstrProfReader::create(Filename, Reader))
+ exitWithError(EC.message(), Filename);
+
+ if (OutputFilename.empty())
+ OutputFilename = "-";
+
+ std::string ErrorInfo;
+ raw_fd_ostream OS(OutputFilename.data(), ErrorInfo, sys::fs::F_Text);
+ if (!ErrorInfo.empty())
+ exitWithError(ErrorInfo, OutputFilename);
+
+ if (ShowAllFunctions && !ShowFunction.empty())
+ errs() << "warning: -function argument ignored: showing all functions\n";
+
+ uint64_t MaxFunctionCount = 0, MaxBlockCount = 0;
+ size_t ShownFunctions = 0, TotalFunctions = 0;
+ for (const auto &Func : *Reader) {
+ bool Show = ShowAllFunctions ||
+ (!ShowFunction.empty() &&
+ Func.Name.find(ShowFunction) != Func.Name.npos);
+
+ ++TotalFunctions;
+ if (Func.Counts[0] > MaxFunctionCount)
+ MaxFunctionCount = Func.Counts[0];
+
+ if (Show) {
+ if (!ShownFunctions)
+ OS << "Counters:\n";
+ ++ShownFunctions;
+
+ OS << " " << Func.Name << ":\n"
+ << " Hash: " << HashPrinter(Func.Hash) << "\n"
+ << " Counters: " << Func.Counts.size() << "\n"
+ << " Function count: " << Func.Counts[0] << "\n";
+ }
+
+ if (Show && ShowCounts)
+ OS << " Block counts: [";
+ for (size_t I = 1, E = Func.Counts.size(); I < E; ++I) {
+ if (Func.Counts[I] > MaxBlockCount)
+ MaxBlockCount = Func.Counts[I];
+ if (Show && ShowCounts)
+ OS << (I == 1 ? "" : ", ") << Func.Counts[I];
+ }
+ if (Show && ShowCounts)
+ OS << "]\n";
+ }
+
+ if (ShowAllFunctions || !ShowFunction.empty())
+ OS << "Functions shown: " << ShownFunctions << "\n";
+ OS << "Total functions: " << TotalFunctions << "\n";
+ OS << "Maximum function count: " << MaxFunctionCount << "\n";
+ OS << "Maximum internal block count: " << MaxBlockCount << "\n";
+ return 0;
+}
+
int main(int argc, const char *argv[]) {
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
@@ -100,6 +194,8 @@ int main(int argc, const char *argv[]) {
if (strcmp(argv[1], "merge") == 0)
func = merge_main;
+ else if (strcmp(argv[1], "show") == 0)
+ func = show_main;
if (func) {
std::string Invocation(ProgName.str() + " " + argv[1]);
@@ -114,7 +210,7 @@ int main(int argc, const char *argv[]) {
errs() << "OVERVIEW: LLVM profile data tools\n\n"
<< "USAGE: " << ProgName << " <command> [args...]\n"
<< "USAGE: " << ProgName << " <command> -help\n\n"
- << "Available commands: merge\n";
+ << "Available commands: merge, show\n";
return 0;
}
}
@@ -124,6 +220,6 @@ int main(int argc, const char *argv[]) {
else
errs() << ProgName << ": Unknown command!\n";
- errs() << "USAGE: " << ProgName << " <merge> [args...]\n";
+ errs() << "USAGE: " << ProgName << " <merge|show> [args...]\n";
return 1;
}