diff options
Diffstat (limited to 'tools/llvm-prof/llvm-prof.cpp')
| -rw-r--r-- | tools/llvm-prof/llvm-prof.cpp | 215 |
1 files changed, 111 insertions, 104 deletions
diff --git a/tools/llvm-prof/llvm-prof.cpp b/tools/llvm-prof/llvm-prof.cpp index 88344078bd..d6e8bb1b12 100644 --- a/tools/llvm-prof/llvm-prof.cpp +++ b/tools/llvm-prof/llvm-prof.cpp @@ -107,124 +107,131 @@ namespace { int main(int argc, char **argv) { - cl::ParseCommandLineOptions(argc, argv, " llvm profile dump decoder\n"); - sys::PrintStackTraceOnErrorSignal(); - - // Read in the bytecode file... - std::string ErrorMessage; - Module *M = ParseBytecodeFile(BytecodeFile, &ErrorMessage); - if (M == 0) { - std::cerr << argv[0] << ": " << BytecodeFile << ": " << ErrorMessage - << "\n"; - return 1; - } - - // Read the profiling information - ProfileInfoLoader PI(argv[0], ProfileDataFile, *M); - - std::map<const Function *, unsigned> FuncFreqs; - std::map<const BasicBlock*, unsigned> BlockFreqs; - std::map<ProfileInfoLoader::Edge, unsigned> EdgeFreqs; - - // Output a report. Eventually, there will be multiple reports selectable on - // the command line, for now, just keep things simple. - - // Emit the most frequent function table... - std::vector<std::pair<Function*, unsigned> > FunctionCounts; - PI.getFunctionCounts(FunctionCounts); - FuncFreqs.insert(FunctionCounts.begin(), FunctionCounts.end()); - - // Sort by the frequency, backwards. - std::sort(FunctionCounts.begin(), FunctionCounts.end(), - PairSecondSortReverse<Function*>()); - - unsigned long long TotalExecutions = 0; - for (unsigned i = 0, e = FunctionCounts.size(); i != e; ++i) - TotalExecutions += FunctionCounts[i].second; - - std::cout << "===" << std::string(73, '-') << "===\n" - << "LLVM profiling output for execution"; - if (PI.getNumExecutions() != 1) std::cout << "s"; - std::cout << ":\n"; - - for (unsigned i = 0, e = PI.getNumExecutions(); i != e; ++i) { - std::cout << " "; - if (e != 1) std::cout << i+1 << ". "; - std::cout << PI.getExecution(i) << "\n"; - } - - std::cout << "\n===" << std::string(73, '-') << "===\n"; - std::cout << "Function execution frequencies:\n\n"; - - // Print out the function frequencies... - printf(" ## Frequency\n"); - for (unsigned i = 0, e = FunctionCounts.size(); i != e; ++i) { - if (FunctionCounts[i].second == 0) { - printf("\n NOTE: %d function%s never executed!\n", - e-i, e-i-1 ? "s were" : " was"); - break; + try { + cl::ParseCommandLineOptions(argc, argv, " llvm profile dump decoder\n"); + sys::PrintStackTraceOnErrorSignal(); + + // Read in the bytecode file... + std::string ErrorMessage; + Module *M = ParseBytecodeFile(BytecodeFile, &ErrorMessage); + if (M == 0) { + std::cerr << argv[0] << ": " << BytecodeFile << ": " << ErrorMessage + << "\n"; + return 1; } - printf("%3d. %5u/%llu %s\n", i+1, FunctionCounts[i].second, TotalExecutions, - FunctionCounts[i].first->getName().c_str()); - } + // Read the profiling information + ProfileInfoLoader PI(argv[0], ProfileDataFile, *M); - std::set<Function*> FunctionsToPrint; + std::map<const Function *, unsigned> FuncFreqs; + std::map<const BasicBlock*, unsigned> BlockFreqs; + std::map<ProfileInfoLoader::Edge, unsigned> EdgeFreqs; - // If we have block count information, print out the LLVM module with - // frequency annotations. - if (PI.hasAccurateBlockCounts()) { - std::vector<std::pair<BasicBlock*, unsigned> > Counts; - PI.getBlockCounts(Counts); + // Output a report. Eventually, there will be multiple reports selectable on + // the command line, for now, just keep things simple. - TotalExecutions = 0; - for (unsigned i = 0, e = Counts.size(); i != e; ++i) - TotalExecutions += Counts[i].second; + // Emit the most frequent function table... + std::vector<std::pair<Function*, unsigned> > FunctionCounts; + PI.getFunctionCounts(FunctionCounts); + FuncFreqs.insert(FunctionCounts.begin(), FunctionCounts.end()); // Sort by the frequency, backwards. - std::sort(Counts.begin(), Counts.end(), - PairSecondSortReverse<BasicBlock*>()); + std::sort(FunctionCounts.begin(), FunctionCounts.end(), + PairSecondSortReverse<Function*>()); + + unsigned long long TotalExecutions = 0; + for (unsigned i = 0, e = FunctionCounts.size(); i != e; ++i) + TotalExecutions += FunctionCounts[i].second; + + std::cout << "===" << std::string(73, '-') << "===\n" + << "LLVM profiling output for execution"; + if (PI.getNumExecutions() != 1) std::cout << "s"; + std::cout << ":\n"; + + for (unsigned i = 0, e = PI.getNumExecutions(); i != e; ++i) { + std::cout << " "; + if (e != 1) std::cout << i+1 << ". "; + std::cout << PI.getExecution(i) << "\n"; + } std::cout << "\n===" << std::string(73, '-') << "===\n"; - std::cout << "Top 20 most frequently executed basic blocks:\n\n"; + std::cout << "Function execution frequencies:\n\n"; // Print out the function frequencies... - printf(" ## %%%% \tFrequency\n"); - unsigned BlocksToPrint = Counts.size(); - if (BlocksToPrint > 20) BlocksToPrint = 20; - for (unsigned i = 0; i != BlocksToPrint; ++i) { - if (Counts[i].second == 0) break; - Function *F = Counts[i].first->getParent(); - printf("%3d. %5.2f%% %5u/%llu\t%s() - %s\n", i+1, - Counts[i].second/(double)TotalExecutions*100, - Counts[i].second, TotalExecutions, - F->getName().c_str(), Counts[i].first->getName().c_str()); - FunctionsToPrint.insert(F); + printf(" ## Frequency\n"); + for (unsigned i = 0, e = FunctionCounts.size(); i != e; ++i) { + if (FunctionCounts[i].second == 0) { + printf("\n NOTE: %d function%s never executed!\n", + e-i, e-i-1 ? "s were" : " was"); + break; + } + + printf("%3d. %5u/%llu %s\n", i+1, FunctionCounts[i].second, TotalExecutions, + FunctionCounts[i].first->getName().c_str()); } - BlockFreqs.insert(Counts.begin(), Counts.end()); - } - - if (PI.hasAccurateEdgeCounts()) { - std::vector<std::pair<ProfileInfoLoader::Edge, unsigned> > Counts; - PI.getEdgeCounts(Counts); - EdgeFreqs.insert(Counts.begin(), Counts.end()); - } + std::set<Function*> FunctionsToPrint; - if (PrintAnnotatedLLVM || PrintAllCode) { - std::cout << "\n===" << std::string(73, '-') << "===\n"; - std::cout << "Annotated LLVM code for the module:\n\n"; + // If we have block count information, print out the LLVM module with + // frequency annotations. + if (PI.hasAccurateBlockCounts()) { + std::vector<std::pair<BasicBlock*, unsigned> > Counts; + PI.getBlockCounts(Counts); + + TotalExecutions = 0; + for (unsigned i = 0, e = Counts.size(); i != e; ++i) + TotalExecutions += Counts[i].second; + + // Sort by the frequency, backwards. + std::sort(Counts.begin(), Counts.end(), + PairSecondSortReverse<BasicBlock*>()); + + std::cout << "\n===" << std::string(73, '-') << "===\n"; + std::cout << "Top 20 most frequently executed basic blocks:\n\n"; + + // Print out the function frequencies... + printf(" ## %%%% \tFrequency\n"); + unsigned BlocksToPrint = Counts.size(); + if (BlocksToPrint > 20) BlocksToPrint = 20; + for (unsigned i = 0; i != BlocksToPrint; ++i) { + if (Counts[i].second == 0) break; + Function *F = Counts[i].first->getParent(); + printf("%3d. %5.2f%% %5u/%llu\t%s() - %s\n", i+1, + Counts[i].second/(double)TotalExecutions*100, + Counts[i].second, TotalExecutions, + F->getName().c_str(), Counts[i].first->getName().c_str()); + FunctionsToPrint.insert(F); + } + + BlockFreqs.insert(Counts.begin(), Counts.end()); + } - ProfileAnnotator PA(FuncFreqs, BlockFreqs, EdgeFreqs); - - if (FunctionsToPrint.empty() || PrintAllCode) - M->print(std::cout, &PA); - else - // Print just a subset of the functions... - for (std::set<Function*>::iterator I = FunctionsToPrint.begin(), - E = FunctionsToPrint.end(); I != E; ++I) - (*I)->print(std::cout, &PA); - } + if (PI.hasAccurateEdgeCounts()) { + std::vector<std::pair<ProfileInfoLoader::Edge, unsigned> > Counts; + PI.getEdgeCounts(Counts); + EdgeFreqs.insert(Counts.begin(), Counts.end()); + } - return 0; + if (PrintAnnotatedLLVM || PrintAllCode) { + std::cout << "\n===" << std::string(73, '-') << "===\n"; + std::cout << "Annotated LLVM code for the module:\n\n"; + + ProfileAnnotator PA(FuncFreqs, BlockFreqs, EdgeFreqs); + + if (FunctionsToPrint.empty() || PrintAllCode) + M->print(std::cout, &PA); + else + // Print just a subset of the functions... + for (std::set<Function*>::iterator I = FunctionsToPrint.begin(), + E = FunctionsToPrint.end(); I != E; ++I) + (*I)->print(std::cout, &PA); + } + + return 0; + } catch (const std::string& msg) { + std::cerr << argv[0] << ": " << msg << "\n"; + } catch (...) { + std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n"; + } + return 1; } |