Implementation of path profiling.

Modified patch by Adam Preuss.

This builds on the existing framework for block tracing, edge profiling and optimal edge profiling.
See -help-hidden for new flags.
For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/Analysis.cpp

@@ -53,9 +53,13 @@ void llvm::initializeAnalysis(PassRegistry &Registry) {
   initializePostDominanceFrontierPass(Registry);
   initializeProfileEstimatorPassPass(Registry);
   initializeNoProfileInfoPass(Registry);
+  initializeNoPathProfileInfoPass(Registry);
   initializeProfileInfoAnalysisGroup(Registry);
+  initializePathProfileInfoAnalysisGroup(Registry);
   initializeLoaderPassPass(Registry);
+  initializePathProfileLoaderPassPass(Registry);
   initializeProfileVerifierPassPass(Registry);
+  initializePathProfileVerifierPass(Registry);
   initializeRegionInfoPass(Registry);
   initializeRegionViewerPass(Registry);
   initializeRegionPrinterPass(Registry);
@@ -73,14 +77,14 @@ void LLVMInitializeAnalysis(LLVMPassRegistryRef R) {
 LLVMBool LLVMVerifyModule(LLVMModuleRef M, LLVMVerifierFailureAction Action,
                           char **OutMessages) {
   std::string Messages;
-  
+
   LLVMBool Result = verifyModule(*unwrap(M),
                             static_cast<VerifierFailureAction>(Action),
                             OutMessages? &Messages : 0);
-  
+
   if (OutMessages)
     *OutMessages = strdup(Messages.c_str());
-  
+
   return Result;
 }