X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FLLVMContextImpl.h;h=a27afc08b9f82d095e5fb1b278e2bff20f57ee05;hb=e6bd7a805808a05e9869fbf067581855a8b2a2c2;hp=392e500f128be73ba8e349179c5f82949028faf0;hpb=2f9c3b002d3cb465fefc5f4b2535ca994c5e9283;p=oota-llvm.git

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 392e500f128..a27afc08b9f 100644
--- a/lib/VMCore/LLVMContextImpl.h
+++ b/lib/VMCore/LLVMContextImpl.h
@@ -1,4 +1,4 @@
-//===----------------- LLVMContextImpl.h - Implementation ------*- C++ -*--===//
+//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -16,30 +16,25 @@
 #define LLVM_LLVMCONTEXT_IMPL_H
 
 #include "llvm/LLVMContext.h"
+#include "ConstantsContext.h"
+#include "LeaksContext.h"
+#include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/System/Mutex.h"
-#include "llvm/System/RWMutex.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 <map>
-
-template<class ValType, class TypeClass, class ConstantClass,
-         bool HasLargeKey = false  /*true for arrays and structs*/ >
-class ValueMap;
+#include <vector>
 
 namespace llvm {
-template<class ValType>
-struct ConstantTraits;
 
 class ConstantInt;
 class ConstantFP;
-class MDString;
-class MDNode;
 class LLVMContext;
 class Type;
 class Value;
@@ -47,8 +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;
@@ -66,7 +61,6 @@ struct DenseMapAPIntKeyInfo {
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
 struct DenseMapAPFloatKeyInfo {
@@ -93,78 +87,150 @@ 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 {
-  sys::SmartRWMutex<true> ConstantsLock;
+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;
+                         DenseMapAPIntKeyInfo> IntMapTy;
   IntMapTy IntConstants;
   
   typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*, 
-                   DenseMapAPFloatKeyInfo> FPMapTy;
+                         DenseMapAPFloatKeyInfo> FPMapTy;
   FPMapTy FPConstants;
   
   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;
+  
+  DenseMap<Type*, ConstantAggregateZero*> CAZConstants;
+
+  typedef ConstantAggrUniqueMap<ArrayType, ConstantArray> ArrayConstantsTy;
+  ArrayConstantsTy ArrayConstants;
+  
+  typedef ConstantAggrUniqueMap<StructType, ConstantStruct> StructConstantsTy;
+  StructConstantsTy StructConstants;
   
-  ValueMap<char, Type, ConstantAggregateZero> *AggZeroConstants;
+  typedef ConstantAggrUniqueMap<VectorType, ConstantVector> VectorConstantsTy;
+  VectorConstantsTy VectorConstants;
   
-  typedef ValueMap<std::vector<Constant*>, ArrayType, 
-    ConstantArray, true /*largekey*/> ArrayConstantsTy;
-  ArrayConstantsTy *ArrayConstants;
+  DenseMap<PointerType*, ConstantPointerNull*> CPNConstants;
+
+  DenseMap<Type*, UndefValue*> UVConstants;
+  
+  StringMap<ConstantDataSequential*> CDSConstants;
+
+  
+  DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
+  ConstantUniqueMap<ExprMapKeyType, const ExprMapKeyType&, Type, ConstantExpr>
+    ExprConstants;
+
+  ConstantUniqueMap<InlineAsmKeyType, const InlineAsmKeyType&, PointerType,
+                    InlineAsm> InlineAsms;
   
-  LLVMContext &Context;
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
   
-  LLVMContextImpl();
-  LLVMContextImpl(const LLVMContextImpl&);
-public:
-  LLVMContextImpl(LLVMContext &C);
-  ~LLVMContextImpl();
-  
-  /// Return a ConstantInt with the specified value and an implied Type. The
-  /// type is the integer type that corresponds to the bit width of the value.
-  ConstantInt *getConstantInt(const APInt &V);
+  LeakDetectorImpl<Value> LLVMObjects;
   
-  ConstantFP *getConstantFP(const APFloat &V);
+  // Basic type instances.
+  Type VoidTy, LabelTy, HalfTy, FloatTy, DoubleTy, MetadataTy;
+  Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy;
+  IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty;
+
   
-  MDString *getMDString(const char *StrBegin, unsigned StrLength);
+  /// TypeAllocator - All dynamically allocated types are allocated from this.
+  /// They live forever until the context is torn down.
+  BumpPtrAllocator TypeAllocator;
+  
+  DenseMap<unsigned, IntegerType*> IntegerTypes;
+  
+  // 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;
+
+
+  /// ValueHandles - This map keeps track of all of the value handles that are
+  /// watching a Value*.  The Value::HasValueHandle bit is used to know
+  // whether or not a value has an entry in this map.
+  typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
+  ValueHandlesTy ValueHandles;
   
-  MDNode *getMDNode(Value*const* Vals, unsigned NumVals);
+  /// CustomMDKindNames - Map to hold the metadata string to ID mapping.
+  StringMap<unsigned> CustomMDKindNames;
   
-  ConstantAggregateZero *getConstantAggregateZero(const Type *Ty);
+  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;
   
-  Constant *getConstantArray(const ArrayType *Ty,
-                             const std::vector<Constant*> &V);
+  /// ScopeRecordIdx - This is the index in ScopeRecords for an MDNode scope
+  /// entry with no "inlined at" element.
+  DenseMap<MDNode*, int> ScopeRecordIdx;
   
-  ConstantInt *getTrue() {
-    if (TheTrueVal)
-      return TheTrueVal;
-    else
-      return (TheTrueVal = Context.getConstantInt(IntegerType::get(1), 1));
-  }
+  /// 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;
   
-  ConstantInt *getFalse() {
-    if (TheFalseVal)
-      return TheFalseVal;
-    else
-      return (TheFalseVal = Context.getConstantInt(IntegerType::get(1), 0));
-  }
+  /// ScopeInlinedAtIdx - This is the index in ScopeInlinedAtRecords for an
+  /// scope/inlined-at pair.
+  DenseMap<std::pair<MDNode*, MDNode*>, int> ScopeInlinedAtIdx;
   
-  void erase(MDString *M);
-  void erase(MDNode *M);
-  void erase(ConstantAggregateZero *Z);
-  void erase(ConstantArray *C);
+  /// 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;
   
-  // RAUW helpers
+  int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
+  int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
   
-  Constant *replaceUsesOfWithOnConstant(ConstantArray *CA, Value *From,
-                                             Value *To, Use *U);
+  LLVMContextImpl(LLVMContext &C);
+  ~LLVMContextImpl();
 };
 
 }