Add methods for bit width modification: sextOrTrunc, zextOrTrunc.

[oota-llvm.git] / lib / Support / Annotation.cpp

diff --git a/lib/Support/Annotation.cpp b/lib/Support/Annotation.cpp
index 65a049d42dcc19a18988e7e4abca291e918bbdca..cfc9c2ad962e29b5fb2836dadc12c69e544db254 100644 (file)
--- a/lib/Support/Annotation.cpp
+++ b/lib/Support/Annotation.cpp
@@ -1,28 +1,62 @@
-//===-- Annotation.cpp - Implement the Annotation Classes --------*- C++ -*--=//
+//===-- Annotation.cpp - Implement the Annotation Classes -----------------===//
+//
+//                     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 implements the AnnotationManager class.
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Support/Annotation.h"
+#include "llvm/Support/ManagedStatic.h"
 #include <map>
-#include "llvm/Annotation.h"
+using namespace llvm;
+
+Annotation::~Annotation() {}  // Designed to be subclassed
+
+Annotable::~Annotable() {   // Virtual because it's designed to be subclassed...
+  Annotation *A = AnnotationList;
+  while (A) {
+    Annotation *Next = A->getNext();
+    delete A;
+    A = Next;
+  }
+}
 
-typedef map<const string, unsigned> IDMapType;
+typedef std::map<const std::string, unsigned> IDMapType;
 static unsigned IDCounter = 0;  // Unique ID counter
 
 // Static member to ensure initialiation on demand.
-static IDMapType &getIDMap() { static IDMapType TheMap; return TheMap; }
+static ManagedStatic<IDMapType> IDMap;
 
 // On demand annotation creation support...
 typedef Annotation *(*AnnFactory)(AnnotationID, const Annotable *, void *);
-typedef map<unsigned, pair<AnnFactory,void*> > FactMapType;
-static FactMapType &getFactMap() { static FactMapType FactMap; return FactMap; }
+typedef std::map<unsigned, std::pair<AnnFactory,void*> > FactMapType;
 
+static FactMapType *TheFactMap = 0;
+static FactMapType &getFactMap() {
+  if (TheFactMap == 0)
+    TheFactMap = new FactMapType();
+  return *TheFactMap;
+}
 
-AnnotationID AnnotationManager::getID(const string &Name) {  // Name -> ID
-  IDMapType::iterator I = getIDMap().find(Name);
-  if (I == getIDMap().end()) {
-    getIDMap()[Name] = IDCounter++;   // Add a new element
+static void eraseFromFactMap(unsigned ID) {
+  assert(TheFactMap && "No entries found!");
+  TheFactMap->erase(ID);
+  if (TheFactMap->empty()) {   // Delete when empty
+    delete TheFactMap;
+    TheFactMap = 0;
+  }
+}
+
+AnnotationID AnnotationManager::getID(const std::string &Name) {  // Name -> ID
+  IDMapType::iterator I = IDMap->find(Name);
+  if (I == IDMap->end()) {
+    (*IDMap)[Name] = IDCounter++;   // Add a new element
     return IDCounter-1;
   }
   return I->second;
@@ -30,44 +64,41 @@ AnnotationID AnnotationManager::getID(const string &Name) {  // Name -> ID
 
 // getID - Name -> ID + registration of a factory function for demand driven
 // annotation support.
-AnnotationID AnnotationManager::getID(const string &Name, Factory Fact,
-                                     void *Data=0) {
+AnnotationID AnnotationManager::getID(const std::string &Name, Factory Fact,
+                                      void *Data) {
   AnnotationID Result(getID(Name));
   registerAnnotationFactory(Result, Fact, Data);
-  return Result;                     
+  return Result;
 }
 
-
 // getName - This function is especially slow, but that's okay because it should
 // only be used for debugging.
 //
-const string &AnnotationManager::getName(AnnotationID ID) {        // ID -> Name
-  IDMapType &TheMap = getIDMap();
+const std::string &AnnotationManager::getName(AnnotationID ID) {  // ID -> Name
+  IDMapType &TheMap = *IDMap;
   for (IDMapType::iterator I = TheMap.begin(); ; ++I) {
     assert(I != TheMap.end() && "Annotation ID is unknown!");
     if (I->second == ID.ID) return I->first;
   }
 }
 
-
 // registerAnnotationFactory - This method is used to register a callback
-// function used to create an annotation on demand if it is needed by the 
+// function used to create an annotation on demand if it is needed by the
 // Annotable::findOrCreateAnnotation method.
 //
-void AnnotationManager::registerAnnotationFactory(AnnotationID ID, 
-                                                 AnnFactory F,
-                                                 void *ExtraData) {
+void AnnotationManager::registerAnnotationFactory(AnnotationID ID, AnnFactory F,
+                                                  void *ExtraData) {
   if (F)
-    getFactMap()[ID.ID] = make_pair(F, ExtraData);
+    getFactMap()[ID.ID] = std::make_pair(F, ExtraData);
   else
-    getFactMap().erase(ID.ID);
+    eraseFromFactMap(ID.ID);
 }
 
 // createAnnotation - Create an annotation of the specified ID for the
 // specified object, using a register annotation creation function.
 //
-Annotation *AnnotationManager::createAnnotation(AnnotationID ID, 
-                                               const Annotable *Obj) {
+Annotation *AnnotationManager::createAnnotation(AnnotationID ID,
+                                                const Annotable *Obj) {
   FactMapType::iterator I = getFactMap().find(ID.ID);
   if (I == getFactMap().end()) return 0;
   return I->second.first(ID, Obj, I->second.second);