Import LLVM r73984.

It seems I keep importing sources at very unlucky moments. Let's see
what this revision of LLVM does.

1 files changed, 33 insertions, 35 deletions

diff --git a/lib/Support/Timer.cpp b/lib/Support/Timer.cpp
index c4920f0..69f967c 100644
--- a/lib/Support/Timer.cpp
+++ b/lib/Support/Timer.cpp
@@ -15,7 +15,6 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/Streams.h"
-#include "llvm/System/Mutex.h"
 #include "llvm/System/Process.h"
 #include <algorithm>
 #include <fstream>
@@ -51,28 +50,37 @@ namespace {
                    cl::Hidden, cl::location(getLibSupportInfoOutputFilename()));
 }
 
-static ManagedStatic<sys::SmartMutex<true> > TimerLock;
-static ManagedStatic<TimerGroup> DefaultTimerGroup;
+static TimerGroup *DefaultTimerGroup = 0;
 static TimerGroup *getDefaultTimerGroup() {
-  return &*DefaultTimerGroup;
+  TimerGroup* tmp = DefaultTimerGroup;
+  sys::MemoryFence();
+  if (!tmp) {
+    llvm_acquire_global_lock();
+    tmp = DefaultTimerGroup;
+    if (!tmp) {
+      tmp = new TimerGroup("Miscellaneous Ungrouped Timers");
+      sys::MemoryFence();
+      DefaultTimerGroup = tmp;
+    }
+    llvm_release_global_lock();
+  }
+  
+  return tmp;
 }
 
 Timer::Timer(const std::string &N)
   : Elapsed(0), UserTime(0), SystemTime(0), MemUsed(0), PeakMem(0), Name(N),
     Started(false), TG(getDefaultTimerGroup()) {
-  sys::SmartScopedLock<true> Lock(&*TimerLock);
   TG->addTimer();
 }
 
 Timer::Timer(const std::string &N, TimerGroup &tg)
   : Elapsed(0), UserTime(0), SystemTime(0), MemUsed(0), PeakMem(0), Name(N),
     Started(false), TG(&tg) {
-  sys::SmartScopedLock<true> Lock(&*TimerLock);
   TG->addTimer();
 }
 
 Timer::Timer(const Timer &T) {
-  sys::SmartScopedLock<true> Lock(&*TimerLock);
   TG = T.TG;
   if (TG) TG->addTimer();
   operator=(T);
@@ -81,7 +89,6 @@ Timer::Timer(const Timer &T) {
 
 // Copy ctor, initialize with no TG member.
 Timer::Timer(bool, const Timer &T) {
-  sys::SmartScopedLock<true> Lock(&*TimerLock);
   TG = T.TG;     // Avoid assertion in operator=
   operator=(T);  // Copy contents
   TG = 0;
@@ -89,7 +96,6 @@ Timer::Timer(bool, const Timer &T) {
 
 
 Timer::~Timer() {
-  sys::SmartScopedLock<true> Lock(&*TimerLock);
   if (TG) {
     if (Started) {
       Started = false;
@@ -106,8 +112,7 @@ static inline size_t getMemUsage() {
 }
 
 struct TimeRecord {
-  double Elapsed, UserTime, SystemTime;
-  ssize_t MemUsed;
+  int64_t Elapsed, UserTime, SystemTime, MemUsed;
 };
 
 static TimeRecord getTimeRecord(bool Start) {
@@ -117,7 +122,7 @@ static TimeRecord getTimeRecord(bool Start) {
   sys::TimeValue user(0,0);
   sys::TimeValue sys(0,0);
 
-  ssize_t MemUsed = 0;
+  int64_t MemUsed = 0;
   if (Start) {
     MemUsed = getMemUsage();
     sys::Process::GetTimeUsage(now,user,sys);
@@ -126,19 +131,17 @@ static TimeRecord getTimeRecord(bool Start) {
     MemUsed = getMemUsage();
   }
 
-  Result.Elapsed  = now.seconds()  + now.microseconds()  / 1000000.0;
-  Result.UserTime = user.seconds() + user.microseconds() / 1000000.0;
-  Result.SystemTime  = sys.seconds()  + sys.microseconds()  / 1000000.0;
+  Result.Elapsed  = now.seconds() * 1000000 + now.microseconds();
+  Result.UserTime = user.seconds() * 1000000 + user.microseconds();
+  Result.SystemTime  = sys.seconds() * 1000000 + sys.microseconds();
   Result.MemUsed  = MemUsed;
 
   return Result;
 }
 
 static ManagedStatic<std::vector<Timer*> > ActiveTimers;
-static ManagedStatic<sys::SmartMutex<true> > ActiveTimerLock;
 
 void Timer::startTimer() {
-  sys::SmartScopedLock<true> Lock(&*ActiveTimerLock);
   Started = true;
   ActiveTimers->push_back(this);
   TimeRecord TR = getTimeRecord(true);
@@ -150,7 +153,6 @@ void Timer::startTimer() {
 }
 
 void Timer::stopTimer() {
-  sys::SmartScopedLock<true> Lock(&*ActiveTimerLock);
   TimeRecord TR = getTimeRecord(false);
   Elapsed    += TR.Elapsed;
   UserTime   += TR.UserTime;
@@ -180,7 +182,6 @@ void Timer::sum(const Timer &T) {
 /// currently active timers, which will be printed when the timer group prints
 ///
 void Timer::addPeakMemoryMeasurement() {
-  sys::SmartScopedLock<true> Lock(&*ActiveTimerLock);
   size_t MemUsed = getMemUsage();
 
   for (std::vector<Timer*>::iterator I = ActiveTimers->begin(),
@@ -203,10 +204,7 @@ static ManagedStatic<Name2Timer> NamedTimers;
 
 static ManagedStatic<Name2Pair> NamedGroupedTimers;
 
-static ManagedStatic<sys::SmartMutex<true> > NamedTimerLock;
-
 static Timer &getNamedRegionTimer(const std::string &Name) {
-  sys::SmartScopedLock<true> Lock(&*NamedTimerLock);
   Name2Timer::iterator I = NamedTimers->find(Name);
   if (I != NamedTimers->end())
     return I->second;
@@ -216,7 +214,6 @@ static Timer &getNamedRegionTimer(const std::string &Name) {
 
 static Timer &getNamedRegionTimer(const std::string &Name,
                                   const std::string &GroupName) {
-  sys::SmartScopedLock<true> Lock(&*NamedTimerLock);
 
   Name2Pair::iterator I = NamedGroupedTimers->find(GroupName);
   if (I == NamedGroupedTimers->end()) {
@@ -279,12 +276,13 @@ static void printVal(double Val, double Total, std::ostream &OS) {
 
 void Timer::print(const Timer &Total, std::ostream &OS) {
   if (Total.UserTime)
-    printVal(UserTime, Total.UserTime, OS);
+    printVal(UserTime / 1000000.0, Total.UserTime / 1000000.0, OS);
   if (Total.SystemTime)
-    printVal(SystemTime, Total.SystemTime, OS);
+    printVal(SystemTime / 1000000.0, Total.SystemTime / 1000000.0, OS);
   if (Total.getProcessTime())
-    printVal(getProcessTime(), Total.getProcessTime(), OS);
-  printVal(Elapsed, Total.Elapsed, OS);
+    printVal(getProcessTime() / 1000000.0,
+             Total.getProcessTime() / 1000000.0, OS);
+  printVal(Elapsed / 1000000.0, Total.Elapsed / 1000000.0, OS);
 
   OS << "  ";
 
@@ -354,26 +352,26 @@ void TimerGroup::removeTimer() {
       // If this is not an collection of ungrouped times, print the total time.
       // Ungrouped timers don't really make sense to add up.  We still print the
       // TOTAL line to make the percentages make sense.
-      if (this != &*DefaultTimerGroup) {
+      if (this != DefaultTimerGroup) {
         *OutStream << "  Total Execution Time: ";
 
-        printAlignedFP(Total.getProcessTime(), 4, 5, *OutStream);
+        printAlignedFP(Total.getProcessTime() / 1000000.0, 4, 5, *OutStream);
         *OutStream << " seconds (";
-        printAlignedFP(Total.getWallTime(), 4, 5, *OutStream);
+        printAlignedFP(Total.getWallTime() / 1000000.0, 4, 5, *OutStream);
         *OutStream << " wall clock)\n";
       }
       *OutStream << "\n";
 
-      if (Total.UserTime)
+      if (Total.UserTime / 1000000.0)
         *OutStream << "   ---User Time---";
-      if (Total.SystemTime)
+      if (Total.SystemTime / 1000000.0)
         *OutStream << "   --System Time--";
-      if (Total.getProcessTime())
+      if (Total.getProcessTime() / 1000000.0)
         *OutStream << "   --User+System--";
       *OutStream << "   ---Wall Time---";
-      if (Total.getMemUsed())
+      if (Total.getMemUsed() / 1000000.0)
         *OutStream << "  ---Mem---";
-      if (Total.getPeakMem())
+      if (Total.getPeakMem() / 1000000.0)
         *OutStream << "  -PeakMem-";
       *OutStream << "  --- Name ---\n";