Don't attribute in file headers anymore. See llvmdev for the

[oota-llvm.git] / include / llvm / Analysis / ProfileInfo.h

diff --git a/include/llvm/Analysis/ProfileInfo.h b/include/llvm/Analysis/ProfileInfo.h
index 4cdce4f97d1c32d62844c961134e2a90a3a3ec34..ff83f97ee042d6fbee9abcecfb60b03c9268dcc8 100644 (file)
--- a/include/llvm/Analysis/ProfileInfo.h
+++ b/include/llvm/Analysis/ProfileInfo.h
@@ -1,10 +1,10 @@
 //===- llvm/Analysis/ProfileInfo.h - Profile Info Interface -----*- C++ -*-===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
 //===----------------------------------------------------------------------===//
 //
 // This file defines the generic ProfileInfo interface, which is used as the
@@ -21,23 +21,47 @@
 #ifndef LLVM_ANALYSIS_PROFILEINFO_H
 #define LLVM_ANALYSIS_PROFILEINFO_H
 
+#include <string>
+#include <map>
+
 namespace llvm {
   class BasicBlock;
+  class Pass;
 
-  struct ProfileInfo {
+  /// ProfileInfo Class - This class holds and maintains edge profiling
+  /// information for some unit of code.
+  class ProfileInfo {
+  protected:
+    // EdgeCounts - Count the number of times a transition between two blocks is
+    // executed.  As a special case, we also hold an edge from the null
+    // BasicBlock to the entry block to indicate how many times the function was
+    // entered.
+    std::map<std::pair<BasicBlock*, BasicBlock*>, unsigned> EdgeCounts;
+  public:
+    static char ID; // Class identification, replacement for typeinfo
     virtual ~ProfileInfo();  // We want to be subclassed
-    
+
     //===------------------------------------------------------------------===//
     /// Profile Information Queries
     ///
-    virtual unsigned getExecutionCount(BasicBlock *BB) = 0;
-    
+    unsigned getExecutionCount(BasicBlock *BB) const;
+
+    unsigned getEdgeWeight(BasicBlock *Src, BasicBlock *Dest) const {
+      std::map<std::pair<BasicBlock*, BasicBlock*>, unsigned>::const_iterator I=
+        EdgeCounts.find(std::make_pair(Src, Dest));
+      return I != EdgeCounts.end() ? I->second : 0;
+    }
+
     //===------------------------------------------------------------------===//
     /// Analysis Update Methods
     ///
 
   };
 
+  /// createProfileLoaderPass - This function returns a Pass that loads the
+  /// profiling information for the module from the specified filename, making
+  /// it available to the optimizers.
+  Pass *createProfileLoaderPass(const std::string &Filename);
 } // End llvm namespace
 
 #endif