X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FPassManagerT.h;h=83061deac16a2cc306b6153bfef3b06ea68760cd;hb=ad333484ea5ae976b83e35ccd3f6cfa6e71290e2;hp=6e5fcbdd3e282887347d0112eb9a8c4f221cf578;hpb=d472e47b6cb59a7cc214cc50db222eb86ddcf748;p=oota-llvm.git

diff --git a/lib/VMCore/PassManagerT.h b/lib/VMCore/PassManagerT.h
index 6e5fcbdd3e2..83061deac16 100644
--- a/lib/VMCore/PassManagerT.h
+++ b/lib/VMCore/PassManagerT.h
@@ -16,19 +16,53 @@
 #define LLVM_PASSMANAGER_T_H
 
 #include "llvm/Pass.h"
-#include <string>
+#include "Support/CommandLine.h"
 #include <algorithm>
+#include <iostream>
 class Annotable;
 
+//===----------------------------------------------------------------------===//
+// Pass debugging information.  Often it is useful to find out what pass is
+// running when a crash occurs in a utility.  When this library is compiled with
+// debugging on, a command line option (--debug-pass) is enabled that causes the
+// pass name to be printed before it executes.
+//
+
+// Different debug levels that can be enabled...
+enum PassDebugLevel {
+  None, Arguments, Structure, Executions, Details
+};
+
+static cl::opt<enum PassDebugLevel>
+PassDebugging("debug-pass", cl::Hidden,
+              cl::desc("Print PassManager debugging information"),
+              cl::values(
+  clEnumVal(None      , "disable debug output"),
+  clEnumVal(Arguments , "print pass arguments to pass to 'opt'"),
+  clEnumVal(Structure , "print pass structure before run()"),
+  clEnumVal(Executions, "print pass name before it is executed"),
+  clEnumVal(Details   , "print pass details when it is executed"),
+                         0));
+
 //===----------------------------------------------------------------------===//
 // PMDebug class - a set of debugging functions, that are not to be
 // instantiated by the template.
 //
 struct PMDebug {
-  // If compiled in debug mode, these functions can be enabled by setting
-  // -debug-pass on the command line of the tool being used.
-  //
-  static void PrintPassStructure(Pass *P);
+  static void PerformPassStartupStuff(Pass *P) {
+    // If debugging is enabled, print out argument information...
+    if (PassDebugging >= Arguments) {
+      std::cerr << "Pass Arguments: ";
+      PrintArgumentInformation(P);
+      std::cerr << "\n";
+
+      // Print the pass execution structure
+      if (PassDebugging >= Structure)
+        P->dumpPassStructure();
+    }
+  }
+
+  static void PrintArgumentInformation(const Pass *P);
   static void PrintPassInformation(unsigned,const char*,Pass *, Annotable *);
   static void PrintAnalysisSetInfo(unsigned,const char*,Pass *P,
                                    const std::vector<AnalysisID> &);
@@ -40,8 +74,26 @@ struct PMDebug {
 // amount of time each pass takes to execute.  This only happens when
 // -time-passes is enabled on the command line.
 //
+struct TimeRecord {      // TimeRecord - Data we collect and print for each pass
+  double Elapsed;        // Wall clock time elapsed in seconds
+  double UserTime;       // User time elapsed
+  double SystemTime;     // System time elapsed
+  unsigned long MaxRSS;  // Maximum resident set size (in bytes)
+  unsigned long RSSTemp; // Temp for calculating maxrss
+
+  TimeRecord() : Elapsed(0), UserTime(0), SystemTime(0), MaxRSS(0) {}
+  void passStart(const TimeRecord &T);
+  void passEnd(const TimeRecord &T);
+  void sum(const TimeRecord &TR);
+  bool operator<(const TimeRecord &TR) const {
+    return UserTime+SystemTime < TR.UserTime+TR.SystemTime;
+  }
+
+  void print(const char *PassName, const TimeRecord &TotalTime) const;
+};
+
 class TimingInfo {
-  std::map<Pass*, double> TimingData;
+  std::map<Pass*, TimeRecord> TimingData;
   TimingInfo() {}   // Private ctor, must use create member
 public:
   // Create method.  If Timing is enabled, this creates and returns a new timing
@@ -125,7 +177,7 @@ public:
 
 
     // Output debug information...
-    if (Parent == 0) PMDebug::PrintPassStructure(this);
+    if (Parent == 0) PMDebug::PerformPassStartupStuff(this);
 
     // Run all of the passes
     for (unsigned i = 0, e = Passes.size(); i < e; ++i) {
@@ -280,6 +332,12 @@ public:
     return 1 + Parent->getDepth();
   }
 
+  virtual unsigned getNumContainedPasses() const { return Passes.size(); }
+  virtual const Pass *getContainedPass(unsigned N) const {
+    assert(N < Passes.size() && "Pass number out of range!");
+    return Passes[N];
+  }
+
   // add - Add a pass to the queue of passes to run.  This passes ownership of
   // the Pass to the PassManager.  When the PassManager is destroyed, the pass
   // will be destroyed as well, so there is no need to delete the pass.  This