2.7: Note that DataTypes.h moved.

[oota-llvm.git] / include / llvm / CallGraphSCCPass.h

diff --git a/include/llvm/CallGraphSCCPass.h b/include/llvm/CallGraphSCCPass.h
index 96c770232df10ac06fd3f76abdb83dd2ca74c3e5..feab7637969d6c14ec9d60ee20c9e312a41dfdb5 100644 (file)
--- a/include/llvm/CallGraphSCCPass.h
+++ b/include/llvm/CallGraphSCCPass.h
@@ -2,8 +2,8 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -22,6 +22,7 @@
 #define LLVM_CALL_GRAPH_SCC_PASS_H
 
 #include "llvm/Pass.h"
+#include "llvm/Analysis/CallGraph.h"
 
 namespace llvm {
 
@@ -31,6 +32,9 @@ class PMStack;
 
 struct CallGraphSCCPass : public Pass {
 
+  explicit CallGraphSCCPass(intptr_t pid) : Pass(PT_CallGraphSCC, pid) {}
+  explicit CallGraphSCCPass(void *pid) : Pass(PT_CallGraphSCC, pid) {}
+
   /// doInitialization - This method is called before the SCC's of the program
   /// has been processed, allowing the pass to do initialization as necessary.
   virtual bool doInitialization(CallGraph &CG) {
@@ -42,7 +46,10 @@ struct CallGraphSCCPass : public Pass {
   /// non-recursive (or only self-recursive) functions will have an SCC size of
   /// 1, where recursive portions of the call graph will have SCC size > 1.
   ///
-  virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC) = 0;
+  /// SCC passes that add or delete functions to the SCC are required to update
+  /// the SCC list, otherwise stale pointers may be dereferenced.
+  ///
+  virtual bool runOnSCC(std::vector<CallGraphNode *> &SCC) = 0;
 
   /// doFinalization - This method is called after the SCC's of the program has
   /// been processed, allowing the pass to do final cleanup as necessary.
@@ -52,7 +59,12 @@ struct CallGraphSCCPass : public Pass {
 
   /// Assign pass manager to manager this pass
   virtual void assignPassManager(PMStack &PMS,
-                                PassManagerType PMT = PMT_CallGraphPassManager);
+                                 PassManagerType PMT = PMT_CallGraphPassManager);
+
+  ///  Return what kind of Pass Manager can manage this pass.
+  virtual PassManagerType getPotentialPassManagerType() const {
+    return PMT_CallGraphPassManager;
+  }
 
   /// getAnalysisUsage - For this class, we declare that we require and preserve
   /// the call graph.  If the derived class implements this method, it should