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Add -time-passes support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32574 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -14,9 +14,11 @@
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#include "llvm/PassManager.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/Module.h"
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#include "llvm/ModuleProvider.h"
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#include "llvm/Support/Streams.h"
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#include "llvm/Support/ManagedStatic.h"
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#include <vector>
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#include <map>
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using namespace llvm;
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@ -571,6 +573,55 @@ private:
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ModulePassManager *activeManager;
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};
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//===----------------------------------------------------------------------===//
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// TimingInfo Class - This class is used to calculate information about the
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// amount of time each pass takes to execute. This only happens when
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// -time-passes is enabled on the command line.
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//
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class TimingInfo {
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std::map<Pass*, Timer> TimingData;
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TimerGroup TG;
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public:
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// Use 'create' member to get this.
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TimingInfo() : TG("... Pass execution timing report ...") {}
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// TimingDtor - Print out information about timing information
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~TimingInfo() {
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// Delete all of the timers...
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TimingData.clear();
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// TimerGroup is deleted next, printing the report.
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}
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// createTheTimeInfo - This method either initializes the TheTimeInfo pointer
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// to a non null value (if the -time-passes option is enabled) or it leaves it
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// null. It may be called multiple times.
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static void createTheTimeInfo();
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void passStarted(Pass *P) {
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if (dynamic_cast<PMDataManager *>(P))
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return;
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std::map<Pass*, Timer>::iterator I = TimingData.find(P);
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if (I == TimingData.end())
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I=TimingData.insert(std::make_pair(P, Timer(P->getPassName(), TG))).first;
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I->second.startTimer();
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}
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void passEnded(Pass *P) {
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if (dynamic_cast<PMDataManager *>(P))
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return;
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std::map<Pass*, Timer>::iterator I = TimingData.find(P);
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assert (I != TimingData.end() && "passStarted/passEnded not nested right!");
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I->second.stopTimer();
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}
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};
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static TimingInfo *TheTimeInfo;
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} // End of llvm namespace
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//===----------------------------------------------------------------------===//
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@ -764,8 +815,10 @@ void PMDataManager::removeDeadPasses(Pass *P, std::string &Msg) {
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std::string Msg1 = " Freeing Pass '";
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dumpPassInfo(*I, Msg1, Msg);
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if (TheTimeInfo) TheTimeInfo->passStarted(P);
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(*I)->releaseMemory();
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if (TheTimeInfo) TheTimeInfo->passEnded(P);
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std::map<AnalysisID, Pass*>::iterator Pos =
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AvailableAnalysis.find((*I)->getPassInfo());
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@ -946,7 +999,9 @@ BasicBlockPassManager::runOnFunction(Function &F) {
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initializeAnalysisImpl(P);
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BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
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if (TheTimeInfo) TheTimeInfo->passStarted(P);
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Changed |= BP->runOnBasicBlock(*I);
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if (TheTimeInfo) TheTimeInfo->passEnded(P);
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if (Changed)
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dumpPassInfo(P, Msg3, Msg2);
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@ -1180,7 +1235,10 @@ bool FunctionPassManagerImpl_New::runOnFunction(Function &F) {
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initializeAnalysisImpl(P);
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FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
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if (TheTimeInfo) TheTimeInfo->passStarted(P);
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Changed |= FP->runOnFunction(F);
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if (TheTimeInfo) TheTimeInfo->passEnded(P);
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if (Changed)
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dumpPassInfo(P, Msg3, Msg2);
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@ -1324,7 +1382,10 @@ ModulePassManager::runOnModule(Module &M) {
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initializeAnalysisImpl(P);
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ModulePass *MP = dynamic_cast<ModulePass*>(P);
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if (TheTimeInfo) TheTimeInfo->passStarted(P);
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Changed |= MP->runOnModule(M);
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if (TheTimeInfo) TheTimeInfo->passEnded(P);
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if (Changed)
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dumpPassInfo(P, Msg3, Msg2);
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@ -1366,6 +1427,8 @@ bool PassManagerImpl_New::run(Module &M) {
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bool Changed = false;
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TimingInfo::createTheTimeInfo();
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dumpArguments();
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if (PassDebugging_New >= Structure)
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dumpPasses();
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@ -1408,4 +1471,27 @@ PassManager::run(Module &M) {
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return PM->run(M);
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}
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//===----------------------------------------------------------------------===//
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// TimingInfo Class - This class is used to calculate information about the
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// amount of time each pass takes to execute. This only happens with
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// -time-passes is enabled on the command line.
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//
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bool llvm::TimePassesIsEnabled = false;
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static cl::opt<bool,true>
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EnableTiming("time-passes", cl::location(TimePassesIsEnabled),
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cl::desc("Time each pass, printing elapsed time for each on exit"));
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// createTheTimeInfo - This method either initializes the TheTimeInfo pointer to
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// a non null value (if the -time-passes option is enabled) or it leaves it
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// null. It may be called multiple times.
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void TimingInfo::createTheTimeInfo() {
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if (!TimePassesIsEnabled || TheTimeInfo) return;
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// Constructed the first time this is called, iff -time-passes is enabled.
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// This guarantees that the object will be constructed before static globals,
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// thus it will be destroyed before them.
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static ManagedStatic<TimingInfo> TTI;
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TheTimeInfo = &*TTI;
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}
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#endif
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