X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FLLVMContextImpl.h;h=6df804ab084430179698994fa96267fe55076538;hb=30268be89df6444f5ffb585439b3fbfec9055197;hp=5571995c7e5fd4b61d3b878a4856d55db9733ceb;hpb=f53c371983908f02678b0e12c5d18466dcc70ffd;p=oota-llvm.git

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 5571995c7e5..6df804ab084 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
 //
@@ -15,21 +15,27 @@
 #ifndef LLVM_LLVMCONTEXT_IMPL_H
 #define LLVM_LLVMCONTEXT_IMPL_H
 
+#include "ConstantsContext.h"
+#include "LeaksContext.h"
+#include "TypesContext.h"
 #include "llvm/LLVMContext.h"
+#include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/System/RWMutex.h"
+#include "llvm/Metadata.h"
+#include "llvm/Assembly/Writer.h"
+#include "llvm/Support/ValueHandle.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/StringMap.h"
+#include <vector>
 
 namespace llvm {
 
 class ConstantInt;
 class ConstantFP;
-class MDString;
-class MDNode;
 class LLVMContext;
 class Type;
 class Value;
@@ -56,7 +62,6 @@ struct DenseMapAPIntKeyInfo {
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
 struct DenseMapAPFloatKeyInfo {
@@ -83,59 +88,159 @@ 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;
+  
+  void *InlineAsmDiagHandler, *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;
+  
+  ConstantUniqueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
+
+  typedef ConstantUniqueMap<std::vector<Constant*>, ArrayType,
+    ConstantArray, true /*largekey*/> ArrayConstantsTy;
+  ArrayConstantsTy ArrayConstants;
+  
+  typedef ConstantUniqueMap<std::vector<Constant*>, StructType,
+    ConstantStruct, true /*largekey*/> StructConstantsTy;
+  StructConstantsTy StructConstants;
+  
+  typedef ConstantUniqueMap<std::vector<Constant*>, VectorType,
+                            ConstantVector> VectorConstantsTy;
+  VectorConstantsTy VectorConstants;
+  
+  ConstantUniqueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
+  ConstantUniqueMap<char, Type, UndefValue> UndefValueConstants;
+  
+  DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
+  ConstantUniqueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
+
+  ConstantUniqueMap<InlineAsmKeyType, PointerType, InlineAsm> InlineAsms;
   
-  LLVMContext &Context;
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
   
-  LLVMContextImpl();
-  LLVMContextImpl(const LLVMContextImpl&);
-public:
-  LLVMContextImpl(LLVMContext &C) : Context(C), TheTrueVal(0), TheFalseVal(0) {} 
+  LeakDetectorImpl<Value> LLVMObjects;
+  
+  // 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;
+
+  // Opaque types are not structurally uniqued, so don't use TypeMap.
+  typedef SmallPtrSet<const OpaqueType*, 8> OpaqueTypesTy;
+  OpaqueTypesTy OpaqueTypes;
+
+  /// Used as an abstract type that will never be resolved.
+  OpaqueType *const AlwaysOpaqueTy;
+
+
+  /// 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;
   
-  /// 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);
+  /// CustomMDKindNames - Map to hold the metadata string to ID mapping.
+  StringMap<unsigned> CustomMDKindNames;
   
-  ConstantFP *getConstantFP(const APFloat &V);
+  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;
   
-  MDString *getMDString(const char *StrBegin, const char *StrEnd);
+  /// ScopeRecordIdx - This is the index in ScopeRecords for an MDNode scope
+  /// entry with no "inlined at" element.
+  DenseMap<MDNode*, int> ScopeRecordIdx;
   
-  MDNode *getMDNode(Value*const* Vals, unsigned NumVals);
+  /// 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 *getConstantIntTrue() {
-    if (TheTrueVal)
-      return TheTrueVal;
-    else
-      return (TheTrueVal = Context.getConstantInt(IntegerType::get(1), 1));
-  }
+  /// ScopeInlinedAtIdx - This is the index in ScopeInlinedAtRecords for an
+  /// scope/inlined-at pair.
+  DenseMap<std::pair<MDNode*, MDNode*>, int> ScopeInlinedAtIdx;
   
-  ConstantInt *getConstantIntFalse() {
-    if (TheFalseVal)
-      return TheFalseVal;
-    else
-      return (TheFalseVal = Context.getConstantInt(IntegerType::get(1), 0));
-  }
+  /// 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);
   
-  void erase(MDString *M);
-  void erase(MDNode *M);
+  LLVMContextImpl(LLVMContext &C);
+  ~LLVMContextImpl();
 };
 
 }