[NFC][PassTiming] factor out generic PassTimingInfo
Moving PassTimingInfo from legacy pass manager code into a separate header.
Making it suitable for both legacy and new pass manager.
Adding a test on -time-passes main functionality.
llvm-svn: 340872
diff --git a/llvm/lib/IR/LegacyPassManager.cpp b/llvm/lib/IR/LegacyPassManager.cpp
index d11a2b3..dbef00a 100644
--- a/llvm/lib/IR/LegacyPassManager.cpp
+++ b/llvm/lib/IR/LegacyPassManager.cpp
@@ -20,6 +20,7 @@
#include "llvm/IR/LegacyPassManagers.h"
#include "llvm/IR/LegacyPassNameParser.h"
#include "llvm/IR/Module.h"
+#include "llvm/IR/PassTimingInfo.h"
#include "llvm/Support/Chrono.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
@@ -494,65 +495,6 @@
} // End of legacy namespace
} // End of llvm namespace
-namespace {
-
-//===----------------------------------------------------------------------===//
-/// TimingInfo Class - This class is used to calculate information about the
-/// amount of time each pass takes to execute. This only happens when
-/// -time-passes is enabled on the command line.
-///
-
-static ManagedStatic<sys::SmartMutex<true> > TimingInfoMutex;
-
-class TimingInfo {
- DenseMap<Pass*, Timer*> TimingData;
- TimerGroup TG;
-public:
- // Use 'create' member to get this.
- TimingInfo() : TG("pass", "... Pass execution timing report ...") {}
-
- // TimingDtor - Print out information about timing information
- ~TimingInfo() {
- // Delete all of the timers, which accumulate their info into the
- // TimerGroup.
- for (auto &I : TimingData)
- delete I.second;
- // TimerGroup is deleted next, printing the report.
- }
-
- // createTheTimeInfo - This method either initializes the TheTimeInfo pointer
- // to a non-null value (if the -time-passes option is enabled) or it leaves it
- // null. It may be called multiple times.
- static void createTheTimeInfo();
-
- // print - Prints out timing information and then resets the timers.
- void print() {
- TG.print(*CreateInfoOutputFile());
- }
-
- /// getPassTimer - Return the timer for the specified pass if it exists.
- Timer *getPassTimer(Pass *P) {
- if (P->getAsPMDataManager())
- return nullptr;
-
- sys::SmartScopedLock<true> Lock(*TimingInfoMutex);
- Timer *&T = TimingData[P];
- if (!T) {
- StringRef PassName = P->getPassName();
- StringRef PassArgument;
- if (const PassInfo *PI = Pass::lookupPassInfo(P->getPassID()))
- PassArgument = PI->getPassArgument();
- T = new Timer(PassArgument.empty() ? PassName : PassArgument, PassName,
- TG);
- }
- return T;
- }
-};
-
-} // End of anon namespace
-
-static TimingInfo *TheTimeInfo;
-
//===----------------------------------------------------------------------===//
// PMTopLevelManager implementation
@@ -1527,7 +1469,6 @@
// Return true if any function is modified by a pass.
bool FunctionPassManagerImpl::run(Function &F) {
bool Changed = false;
- TimingInfo::createTheTimeInfo();
initializeAllAnalysisInfo();
for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index) {
@@ -1763,7 +1704,6 @@
/// whether any of the passes modifies the module, and if so, return true.
bool PassManagerImpl::run(Module &M) {
bool Changed = false;
- TimingInfo::createTheTimeInfo();
dumpArguments();
dumpPasses();
@@ -1808,41 +1748,6 @@
}
//===----------------------------------------------------------------------===//
-// TimingInfo implementation
-
-bool llvm::TimePassesIsEnabled = false;
-static cl::opt<bool, true> EnableTiming(
- "time-passes", cl::location(TimePassesIsEnabled), cl::Hidden,
- cl::desc("Time each pass, printing elapsed time for each on exit"));
-
-// createTheTimeInfo - This method either initializes the TheTimeInfo pointer to
-// a non-null value (if the -time-passes option is enabled) or it leaves it
-// null. It may be called multiple times.
-void TimingInfo::createTheTimeInfo() {
- if (!TimePassesIsEnabled || TheTimeInfo) return;
-
- // Constructed the first time this is called, iff -time-passes is enabled.
- // This guarantees that the object will be constructed before static globals,
- // thus it will be destroyed before them.
- static ManagedStatic<TimingInfo> TTI;
- TheTimeInfo = &*TTI;
-}
-
-/// If TimingInfo is enabled then start pass timer.
-Timer *llvm::getPassTimer(Pass *P) {
- if (TheTimeInfo)
- return TheTimeInfo->getPassTimer(P);
- return nullptr;
-}
-
-/// If timing is enabled, report the times collected up to now and then reset
-/// them.
-void llvm::reportAndResetTimings() {
- if (TheTimeInfo)
- TheTimeInfo->print();
-}
-
-//===----------------------------------------------------------------------===//
// PMStack implementation
//