X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FLLVMContextImpl.h;h=a27afc08b9f82d095e5fb1b278e2bff20f57ee05;hb=e6bd7a805808a05e9869fbf067581855a8b2a2c2;hp=58e8870d24e55e8c0f1fb92e614935c31d3764e2;hpb=59d5aac0b435714f3ed2195dfa884aad2e993eb0;p=oota-llvm.git

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 58e8870d24e..a27afc08b9f 100644
--- a/lib/VMCore/LLVMContextImpl.h
+++ b/lib/VMCore/LLVMContextImpl.h
@@ -1,4 +1,4 @@
-//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class --------------===//
+//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -15,20 +15,19 @@
 #ifndef LLVM_LLVMCONTEXT_IMPL_H
 #define LLVM_LLVMCONTEXT_IMPL_H
 
+#include "llvm/LLVMContext.h"
 #include "ConstantsContext.h"
 #include "LeaksContext.h"
-#include "TypesContext.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Metadata.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/System/Mutex.h"
-#include "llvm/System/RWMutex.h"
-#include "llvm/Assembly/Writer.h"
+#include "llvm/Metadata.h"
+#include "llvm/Support/ValueHandle.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/StringMap.h"
 #include <vector>
 
@@ -36,8 +35,6 @@ namespace llvm {
 
 class ConstantInt;
 class ConstantFP;
-class MDString;
-class MDNode;
 class LLVMContext;
 class Type;
 class Value;
@@ -45,8 +42,8 @@ class Value;
 struct DenseMapAPIntKeyInfo {
   struct KeyTy {
     APInt val;
-    const Type* type;
-    KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
+    Type* type;
+    KeyTy(const APInt& V, Type* Ty) : val(V), type(Ty) {}
     KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
     bool operator==(const KeyTy& that) const {
       return type == that.type && this->val == that.val;
@@ -64,7 +61,6 @@ struct DenseMapAPIntKeyInfo {
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
 struct DenseMapAPFloatKeyInfo {
@@ -91,11 +87,40 @@ struct DenseMapAPFloatKeyInfo {
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
+/// DebugRecVH - This is a CallbackVH used to keep the Scope -> index maps
+/// up to date as MDNodes mutate.  This class is implemented in DebugLoc.cpp.
+class DebugRecVH : public CallbackVH {
+  /// Ctx - This is the LLVM Context being referenced.
+  LLVMContextImpl *Ctx;
+  
+  /// Idx - The index into either ScopeRecordIdx or ScopeInlinedAtRecords that
+  /// this reference lives in.  If this is zero, then it represents a
+  /// non-canonical entry that has no DenseMap value.  This can happen due to
+  /// RAUW.
+  int Idx;
+public:
+  DebugRecVH(MDNode *n, LLVMContextImpl *ctx, int idx)
+    : CallbackVH(n), Ctx(ctx), Idx(idx) {}
+  
+  MDNode *get() const {
+    return cast_or_null<MDNode>(getValPtr());
+  }
+  
+  virtual void deleted();
+  virtual void allUsesReplacedWith(Value *VNew);
+};
+  
 class LLVMContextImpl {
 public:
+  /// OwnedModules - The set of modules instantiated in this context, and which
+  /// will be automatically deleted if this context is deleted.
+  SmallPtrSet<Module*, 4> OwnedModules;
+  
+  LLVMContext::InlineAsmDiagHandlerTy InlineAsmDiagHandler;
+  void *InlineAsmDiagContext;
+  
   typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*, 
                          DenseMapAPIntKeyInfo> IntMapTy;
   IntMapTy IntConstants;
@@ -107,70 +132,65 @@ public:
   StringMap<MDString*> MDStringCache;
   
   FoldingSet<MDNode> MDNodeSet;
+  // MDNodes may be uniqued or not uniqued.  When they're not uniqued, they
+  // aren't in the MDNodeSet, but they're still shared between objects, so no
+  // one object can destroy them.  This set allows us to at least destroy them
+  // on Context destruction.
+  SmallPtrSet<MDNode*, 1> NonUniquedMDNodes;
   
-  ValueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
+  DenseMap<Type*, ConstantAggregateZero*> CAZConstants;
 
-  typedef ValueMap<std::vector<Constant*>, ArrayType, 
-    ConstantArray, true /*largekey*/> ArrayConstantsTy;
+  typedef ConstantAggrUniqueMap<ArrayType, ConstantArray> ArrayConstantsTy;
   ArrayConstantsTy ArrayConstants;
   
-  typedef ValueMap<std::vector<Constant*>, StructType,
-                   ConstantStruct, true /*largekey*/> StructConstantsTy;
+  typedef ConstantAggrUniqueMap<StructType, ConstantStruct> StructConstantsTy;
   StructConstantsTy StructConstants;
   
-  typedef ValueMap<std::vector<Constant*>, VectorType,
-                   ConstantVector> VectorConstantsTy;
+  typedef ConstantAggrUniqueMap<VectorType, ConstantVector> VectorConstantsTy;
   VectorConstantsTy VectorConstants;
   
-  ValueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
+  DenseMap<PointerType*, ConstantPointerNull*> CPNConstants;
+
+  DenseMap<Type*, UndefValue*> UVConstants;
   
-  ValueMap<char, Type, UndefValue> UndefValueConstants;
+  StringMap<ConstantDataSequential*> CDSConstants;
+
   
-  ValueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
+  DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
+  ConstantUniqueMap<ExprMapKeyType, const ExprMapKeyType&, Type, ConstantExpr>
+    ExprConstants;
+
+  ConstantUniqueMap<InlineAsmKeyType, const InlineAsmKeyType&, PointerType,
+                    InlineAsm> InlineAsms;
   
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
   
-  // Lock used for guarding access to the leak detector
-  sys::SmartMutex<true> LLVMObjectsLock;
   LeakDetectorImpl<Value> LLVMObjects;
   
-  // Lock used for guarding access to the type maps.
-  sys::SmartMutex<true> TypeMapLock;
+  // Basic type instances.
+  Type VoidTy, LabelTy, HalfTy, FloatTy, DoubleTy, MetadataTy;
+  Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy;
+  IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty;
+
+  
+  /// TypeAllocator - All dynamically allocated types are allocated from this.
+  /// They live forever until the context is torn down.
+  BumpPtrAllocator TypeAllocator;
+  
+  DenseMap<unsigned, IntegerType*> IntegerTypes;
   
-  // Recursive lock used for guarding access to AbstractTypeUsers.
-  // NOTE: The true template parameter means this will no-op when we're not in
-  // multithreaded mode.
-  sys::SmartMutex<true> AbstractTypeUsersLock;
+  // TODO: Optimize FunctionTypes/AnonStructTypes!
+  std::map<std::vector<Type*>, FunctionType*> FunctionTypes;
+  std::map<std::vector<Type*>, StructType*> AnonStructTypes;
+  StringMap<StructType*> NamedStructTypes;
+  unsigned NamedStructTypesUniqueID;
+    
+  DenseMap<std::pair<Type *, uint64_t>, ArrayType*> ArrayTypes;
+  DenseMap<std::pair<Type *, unsigned>, VectorType*> VectorTypes;
+  DenseMap<Type*, PointerType*> PointerTypes;  // Pointers in AddrSpace = 0
+  DenseMap<std::pair<Type*, unsigned>, PointerType*> ASPointerTypes;
 
-  // Basic type instances.
-  const Type VoidTy;
-  const Type LabelTy;
-  const Type FloatTy;
-  const Type DoubleTy;
-  const Type MetadataTy;
-  const Type X86_FP80Ty;
-  const Type FP128Ty;
-  const Type PPC_FP128Ty;
-  const IntegerType Int1Ty;
-  const IntegerType Int8Ty;
-  const IntegerType Int16Ty;
-  const IntegerType Int32Ty;
-  const IntegerType Int64Ty;
-
-  // Concrete/Abstract TypeDescriptions - We lazily calculate type descriptions
-  // for types as they are needed.  Because resolution of types must invalidate
-  // all of the abstract type descriptions, we keep them in a seperate map to 
-  // make this easy.
-  TypePrinting ConcreteTypeDescriptions;
-  TypePrinting AbstractTypeDescriptions;
-  
-  TypeMap<ArrayValType, ArrayType> ArrayTypes;
-  TypeMap<VectorValType, VectorType> VectorTypes;
-  TypeMap<PointerValType, PointerType> PointerTypes;
-  TypeMap<FunctionValType, FunctionType> FunctionTypes;
-  TypeMap<StructValType, StructType> StructTypes;
-  TypeMap<IntegerValType, IntegerType> IntegerTypes;
 
   /// ValueHandles - This map keeps track of all of the value handles that are
   /// watching a Value*.  The Value::HasValueHandle bit is used to know
@@ -178,45 +198,39 @@ public:
   typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
   ValueHandlesTy ValueHandles;
   
-  MetadataContext TheMetadata;
-  LLVMContextImpl(LLVMContext &C) : TheTrueVal(0), TheFalseVal(0),
-    VoidTy(C, Type::VoidTyID),
-    LabelTy(C, Type::LabelTyID),
-    FloatTy(C, Type::FloatTyID),
-    DoubleTy(C, Type::DoubleTyID),
-    MetadataTy(C, Type::MetadataTyID),
-    X86_FP80Ty(C, Type::X86_FP80TyID),
-    FP128Ty(C, Type::FP128TyID),
-    PPC_FP128Ty(C, Type::PPC_FP128TyID),
-    Int1Ty(C, 1),
-    Int8Ty(C, 8),
-    Int16Ty(C, 16),
-    Int32Ty(C, 32),
-    Int64Ty(C, 64) { }
-
-  ~LLVMContextImpl()
-  {
-    ExprConstants.freeConstants();
-    ArrayConstants.freeConstants();
-    StructConstants.freeConstants();
-    VectorConstants.freeConstants();
-    AggZeroConstants.freeConstants();
-    NullPtrConstants.freeConstants();
-    UndefValueConstants.freeConstants();
-    for (FoldingSet<MDNode>::iterator I = MDNodeSet.begin(), 
-           E = MDNodeSet.end(); I != E; ++I)
-      I->dropAllReferences();
-    for (IntMapTy::iterator I = IntConstants.begin(), E = IntConstants.end(); 
-         I != E; ++I) {
-      if (I->second->use_empty())
-        delete I->second;
-    }
-    for (FPMapTy::iterator I = FPConstants.begin(), E = FPConstants.end(); 
-         I != E; ++I) {
-      if (I->second->use_empty())
-        delete I->second;
-    }
-  }
+  /// CustomMDKindNames - Map to hold the metadata string to ID mapping.
+  StringMap<unsigned> CustomMDKindNames;
+  
+  typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
+  typedef SmallVector<MDPairTy, 2> MDMapTy;
+
+  /// MetadataStore - Collection of per-instruction metadata used in this
+  /// context.
+  DenseMap<const Instruction *, MDMapTy> MetadataStore;
+  
+  /// ScopeRecordIdx - This is the index in ScopeRecords for an MDNode scope
+  /// entry with no "inlined at" element.
+  DenseMap<MDNode*, int> ScopeRecordIdx;
+  
+  /// ScopeRecords - These are the actual mdnodes (in a value handle) for an
+  /// index.  The ValueHandle ensures that ScopeRecordIdx stays up to date if
+  /// the MDNode is RAUW'd.
+  std::vector<DebugRecVH> ScopeRecords;
+  
+  /// ScopeInlinedAtIdx - This is the index in ScopeInlinedAtRecords for an
+  /// scope/inlined-at pair.
+  DenseMap<std::pair<MDNode*, MDNode*>, int> ScopeInlinedAtIdx;
+  
+  /// ScopeInlinedAtRecords - These are the actual mdnodes (in value handles)
+  /// for an index.  The ValueHandle ensures that ScopeINlinedAtIdx stays up
+  /// to date.
+  std::vector<std::pair<DebugRecVH, DebugRecVH> > ScopeInlinedAtRecords;
+  
+  int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
+  int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
+  
+  LLVMContextImpl(LLVMContext &C);
+  ~LLVMContextImpl();
 };
 
 }