summaryrefslogtreecommitdiff
path: root/release_23/tools/llvm-prof/llvm-prof.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'release_23/tools/llvm-prof/llvm-prof.cpp')
-rw-r--r--release_23/tools/llvm-prof/llvm-prof.cpp251
1 files changed, 0 insertions, 251 deletions
diff --git a/release_23/tools/llvm-prof/llvm-prof.cpp b/release_23/tools/llvm-prof/llvm-prof.cpp
deleted file mode 100644
index 17a8e53607b4..000000000000
--- a/release_23/tools/llvm-prof/llvm-prof.cpp
+++ /dev/null
@@ -1,251 +0,0 @@
-//===- llvm-prof.cpp - Read in and process llvmprof.out data files --------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This tools is meant for use with the various LLVM profiling instrumentation
-// passes. It reads in the data file produced by executing an instrumented
-// program, and outputs a nice report.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/InstrTypes.h"
-#include "llvm/Module.h"
-#include "llvm/Assembly/AsmAnnotationWriter.h"
-#include "llvm/Analysis/ProfileInfoLoader.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/System/Signals.h"
-#include <algorithm>
-#include <iostream>
-#include <iomanip>
-#include <map>
-#include <set>
-
-using namespace llvm;
-
-namespace {
- cl::opt<std::string>
- BitcodeFile(cl::Positional, cl::desc("<program bitcode file>"),
- cl::Required);
-
- cl::opt<std::string>
- ProfileDataFile(cl::Positional, cl::desc("<llvmprof.out file>"),
- cl::Optional, cl::init("llvmprof.out"));
-
- cl::opt<bool>
- PrintAnnotatedLLVM("annotated-llvm",
- cl::desc("Print LLVM code with frequency annotations"));
- cl::alias PrintAnnotated2("A", cl::desc("Alias for --annotated-llvm"),
- cl::aliasopt(PrintAnnotatedLLVM));
- cl::opt<bool>
- PrintAllCode("print-all-code",
- cl::desc("Print annotated code for the entire program"));
-}
-
-// PairSecondSort - A sorting predicate to sort by the second element of a pair.
-template<class T>
-struct PairSecondSortReverse
- : public std::binary_function<std::pair<T, unsigned>,
- std::pair<T, unsigned>, bool> {
- bool operator()(const std::pair<T, unsigned> &LHS,
- const std::pair<T, unsigned> &RHS) const {
- return LHS.second > RHS.second;
- }
-};
-
-namespace {
- class ProfileAnnotator : public AssemblyAnnotationWriter {
- std::map<const Function *, unsigned> &FuncFreqs;
- std::map<const BasicBlock*, unsigned> &BlockFreqs;
- std::map<ProfileInfoLoader::Edge, unsigned> &EdgeFreqs;
- public:
- ProfileAnnotator(std::map<const Function *, unsigned> &FF,
- std::map<const BasicBlock*, unsigned> &BF,
- std::map<ProfileInfoLoader::Edge, unsigned> &EF)
- : FuncFreqs(FF), BlockFreqs(BF), EdgeFreqs(EF) {}
-
- virtual void emitFunctionAnnot(const Function *F, std::ostream &OS) {
- OS << ";;; %" << F->getName() << " called " << FuncFreqs[F]
- << " times.\n;;;\n";
- }
- virtual void emitBasicBlockStartAnnot(const BasicBlock *BB,
- std::ostream &OS) {
- if (BlockFreqs.empty()) return;
- if (unsigned Count = BlockFreqs[BB])
- OS << "\t;;; Basic block executed " << Count << " times.\n";
- else
- OS << "\t;;; Never executed!\n";
- }
-
- virtual void emitBasicBlockEndAnnot(const BasicBlock *BB, std::ostream &OS){
- if (EdgeFreqs.empty()) return;
-
- // Figure out how many times each successor executed.
- std::vector<std::pair<const BasicBlock*, unsigned> > SuccCounts;
- const TerminatorInst *TI = BB->getTerminator();
-
- std::map<ProfileInfoLoader::Edge, unsigned>::iterator I =
- EdgeFreqs.lower_bound(std::make_pair(const_cast<BasicBlock*>(BB), 0U));
- for (; I != EdgeFreqs.end() && I->first.first == BB; ++I)
- if (I->second)
- SuccCounts.push_back(std::make_pair(TI->getSuccessor(I->first.second),
- I->second));
- if (!SuccCounts.empty()) {
- OS << "\t;;; Out-edge counts:";
- for (unsigned i = 0, e = SuccCounts.size(); i != e; ++i)
- OS << " [" << SuccCounts[i].second << " -> "
- << SuccCounts[i].first->getName() << "]";
- OS << "\n";
- }
- }
- };
-}
-
-
-int main(int argc, char **argv) {
- llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
- try {
- cl::ParseCommandLineOptions(argc, argv, "llvm profile dump decoder\n");
- sys::PrintStackTraceOnErrorSignal();
-
- // Read in the bitcode file...
- std::string ErrorMessage;
- Module *M = 0;
- if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(BitcodeFile,
- &ErrorMessage)) {
- M = ParseBitcodeFile(Buffer, &ErrorMessage);
- delete Buffer;
- }
- if (M == 0) {
- std::cerr << argv[0] << ": " << BitcodeFile << ": "
- << 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.
- sort(FunctionCounts.begin(), FunctionCounts.end(),
- PairSecondSortReverse<Function*>());
-
- uint64_t 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...
- std::cout << " ## Frequency\n";
- for (unsigned i = 0, e = FunctionCounts.size(); i != e; ++i) {
- if (FunctionCounts[i].second == 0) {
- std::cout << "\n NOTE: " << e-i << " function" <<
- (e-i-1 ? "s were" : " was") << " never executed!\n";
- break;
- }
-
- std::cout << std::setw(3) << i+1 << ". "
- << std::setw(5) << FunctionCounts[i].second << "/"
- << TotalExecutions << " "
- << FunctionCounts[i].first->getName().c_str() << "\n";
- }
-
- std::set<Function*> FunctionsToPrint;
-
- // 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.
- 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...
- std::cout <<" ## %% \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();
- std::cout << std::setw(3) << i+1 << ". "
- << std::setw(5) << std::setprecision(2)
- << Counts[i].second/(double)TotalExecutions*100 << "% "
- << std::setw(5) << Counts[i].second << "/"
- << TotalExecutions << "\t"
- << F->getName().c_str() << "() - "
- << Counts[i].first->getName().c_str() << "\n";
- FunctionsToPrint.insert(F);
- }
-
- 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());
- }
-
- 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;
-}
View Lorry Controller Status