mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-11 08:29:35 +00:00
Move main llvm-prof functionality into a ModulePass.
- To support using the ProfileInfo analysis results instead of accessing the ProfileInfoLoader directly. - Based on (part of) a patch by Andreas Neustifter. - No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75625 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
parent
858cb8a5e0
commit
314fa8e40a
@ -16,7 +16,9 @@
|
||||
#include "llvm/InstrTypes.h"
|
||||
#include "llvm/LLVMContext.h"
|
||||
#include "llvm/Module.h"
|
||||
#include "llvm/PassManager.h"
|
||||
#include "llvm/Assembly/AsmAnnotationWriter.h"
|
||||
#include "llvm/Analysis/ProfileInfo.h"
|
||||
#include "llvm/Analysis/ProfileInfoLoader.h"
|
||||
#include "llvm/Bitcode/ReaderWriter.h"
|
||||
#include "llvm/Support/CommandLine.h"
|
||||
@ -113,6 +115,141 @@ namespace {
|
||||
};
|
||||
}
|
||||
|
||||
namespace {
|
||||
/// ProfileInfoPrinterPass - Helper pass to dump the profile information for
|
||||
/// a module.
|
||||
//
|
||||
// FIXME: This should move elsewhere.
|
||||
class ProfileInfoPrinterPass : public ModulePass {
|
||||
ProfileInfoLoader &PIL;
|
||||
public:
|
||||
static char ID; // Class identification, replacement for typeinfo.
|
||||
explicit ProfileInfoPrinterPass(ProfileInfoLoader &_PIL)
|
||||
: ModulePass(&ID), PIL(_PIL) {}
|
||||
|
||||
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
|
||||
AU.setPreservesAll();
|
||||
AU.addRequired<ProfileInfo>();
|
||||
}
|
||||
|
||||
bool runOnModule(Module &M);
|
||||
};
|
||||
}
|
||||
|
||||
char ProfileInfoPrinterPass::ID = 0;
|
||||
|
||||
bool ProfileInfoPrinterPass::runOnModule(Module &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;
|
||||
PIL.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 (PIL.getNumExecutions() != 1) std::cout << "s";
|
||||
std::cout << ":\n";
|
||||
|
||||
for (unsigned i = 0, e = PIL.getNumExecutions(); i != e; ++i) {
|
||||
std::cout << " ";
|
||||
if (e != 1) std::cout << i+1 << ". ";
|
||||
std::cout << PIL.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 (PIL.hasAccurateBlockCounts()) {
|
||||
std::vector<std::pair<BasicBlock*, unsigned> > Counts;
|
||||
PIL.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 (PIL.hasAccurateEdgeCounts()) {
|
||||
std::vector<std::pair<ProfileInfoLoader::Edge, unsigned> > Counts;
|
||||
PIL.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 false;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
// Print a stack trace if we signal out.
|
||||
@ -138,117 +275,17 @@ int main(int argc, char **argv) {
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Read the profiling information
|
||||
ProfileInfoLoader PI(argv[0], ProfileDataFile, *M);
|
||||
// Read the profiling information. This is redundant since we load it again
|
||||
// using the standard profile info provider pass, but for now this gives us
|
||||
// access to additional information not exposed via the ProfileInfo
|
||||
// interface.
|
||||
ProfileInfoLoader PIL(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);
|
||||
}
|
||||
// Run the printer pass.
|
||||
PassManager PassMgr;
|
||||
PassMgr.add(createProfileLoaderPass(ProfileDataFile));
|
||||
PassMgr.add(new ProfileInfoPrinterPass(PIL));
|
||||
PassMgr.run(*M);
|
||||
|
||||
return 0;
|
||||
} catch (const std::string& msg) {
|
||||
@ -256,5 +293,6 @@ int main(int argc, char **argv) {
|
||||
} catch (...) {
|
||||
std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user