X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FLLVMContextImpl.h;h=2252028b156916f5456ce4f873cc166f73d37dc2;hb=9777f61bfe36a53757977cd777f2b4e73fc3e8a3;hp=83888c3907bf99f9b9f2f226e7614a74d6657078;hpb=e30e678865b8dc1b69ef1c26e7567ffd1300553c;p=oota-llvm.git

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 83888c3907b..2252028b156 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
 //
@@ -15,29 +15,27 @@
 #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 "llvm/ADT/Hashing.h"
 #include <vector>
 
 namespace llvm {
 
 class ConstantInt;
 class ConstantFP;
-class MDString;
-class MDNode;
 class LLVMContext;
 class Type;
 class Value;
@@ -45,8 +43,8 @@ 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;
@@ -54,17 +52,18 @@ struct DenseMapAPIntKeyInfo {
     bool operator!=(const KeyTy& that) const {
       return !this->operator==(that);
     }
+    friend hash_code hash_value(const KeyTy &Key) {
+      return hash_combine(Key.type, Key.val);
+    }
   };
   static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
   static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
   static unsigned getHashValue(const KeyTy &Key) {
-    return DenseMapInfo<void*>::getHashValue(Key.type) ^ 
-      Key.val.getHashValue();
+    return static_cast<unsigned>(hash_value(Key));
   }
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
 struct DenseMapAPFloatKeyInfo {
@@ -78,6 +77,9 @@ struct DenseMapAPFloatKeyInfo {
     bool operator!=(const KeyTy& that) const {
       return !this->operator==(that);
     }
+    friend hash_code hash_value(const KeyTy &Key) {
+      return hash_combine(Key.val);
+    }
   };
   static inline KeyTy getEmptyKey() { 
     return KeyTy(APFloat(APFloat::Bogus,1));
@@ -86,17 +88,164 @@ struct DenseMapAPFloatKeyInfo {
     return KeyTy(APFloat(APFloat::Bogus,2)); 
   }
   static unsigned getHashValue(const KeyTy &Key) {
-    return Key.val.getHashValue();
+    return static_cast<unsigned>(hash_value(Key));
   }
   static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
     return LHS == RHS;
   }
-  static bool isPod() { return false; }
 };
 
+struct AnonStructTypeKeyInfo {
+  struct KeyTy {
+    ArrayRef<Type*> ETypes;
+    bool isPacked;
+    KeyTy(const ArrayRef<Type*>& E, bool P) :
+      ETypes(E), isPacked(P) {}
+    KeyTy(const KeyTy& that) :
+      ETypes(that.ETypes), isPacked(that.isPacked) {}
+    KeyTy(const StructType* ST) :
+      ETypes(ArrayRef<Type*>(ST->element_begin(), ST->element_end())),
+      isPacked(ST->isPacked()) {}
+    bool operator==(const KeyTy& that) const {
+      if (isPacked != that.isPacked)
+        return false;
+      if (ETypes != that.ETypes)
+        return false;
+      return true;
+    }
+    bool operator!=(const KeyTy& that) const {
+      return !this->operator==(that);
+    }
+  };
+  static inline StructType* getEmptyKey() {
+    return DenseMapInfo<StructType*>::getEmptyKey();
+  }
+  static inline StructType* getTombstoneKey() {
+    return DenseMapInfo<StructType*>::getTombstoneKey();
+  }
+  static unsigned getHashValue(const KeyTy& Key) {
+    return hash_combine(hash_combine_range(Key.ETypes.begin(),
+                                           Key.ETypes.end()),
+                        Key.isPacked);
+  }
+  static unsigned getHashValue(const StructType *ST) {
+    return getHashValue(KeyTy(ST));
+  }
+  static bool isEqual(const KeyTy& LHS, const StructType *RHS) {
+    if (RHS == getEmptyKey() || RHS == getTombstoneKey())
+      return false;
+    return LHS == KeyTy(RHS);
+  }
+  static bool isEqual(const StructType *LHS, const StructType *RHS) {
+    return LHS == RHS;
+  }
+};
+
+struct FunctionTypeKeyInfo {
+  struct KeyTy {
+    const Type *ReturnType;
+    ArrayRef<Type*> Params;
+    bool isVarArg;
+    KeyTy(const Type* R, const ArrayRef<Type*>& P, bool V) :
+      ReturnType(R), Params(P), isVarArg(V) {}
+    KeyTy(const KeyTy& that) :
+      ReturnType(that.ReturnType),
+      Params(that.Params),
+      isVarArg(that.isVarArg) {}
+    KeyTy(const FunctionType* FT) :
+      ReturnType(FT->getReturnType()),
+      Params(ArrayRef<Type*>(FT->param_begin(), FT->param_end())),
+      isVarArg(FT->isVarArg()) {}
+    bool operator==(const KeyTy& that) const {
+      if (ReturnType != that.ReturnType)
+        return false;
+      if (isVarArg != that.isVarArg)
+        return false;
+      if (Params != that.Params)
+        return false;
+      return true;
+    }
+    bool operator!=(const KeyTy& that) const {
+      return !this->operator==(that);
+    }
+  };
+  static inline FunctionType* getEmptyKey() {
+    return DenseMapInfo<FunctionType*>::getEmptyKey();
+  }
+  static inline FunctionType* getTombstoneKey() {
+    return DenseMapInfo<FunctionType*>::getTombstoneKey();
+  }
+  static unsigned getHashValue(const KeyTy& Key) {
+    return hash_combine(Key.ReturnType,
+                        hash_combine_range(Key.Params.begin(),
+                                           Key.Params.end()),
+                        Key.isVarArg);
+  }
+  static unsigned getHashValue(const FunctionType *FT) {
+    return getHashValue(KeyTy(FT));
+  }
+  static bool isEqual(const KeyTy& LHS, const FunctionType *RHS) {
+    if (RHS == getEmptyKey() || RHS == getTombstoneKey())
+      return false;
+    return LHS == KeyTy(RHS);
+  }
+  static bool isEqual(const FunctionType *LHS, const FunctionType *RHS) {
+    return LHS == RHS;
+  }
+};
+
+// Provide a FoldingSetTrait::Equals specialization for MDNode that can use a
+// shortcut to avoid comparing all operands.
+template<> struct FoldingSetTrait<MDNode> : DefaultFoldingSetTrait<MDNode> {
+  static bool Equals(const MDNode &X, const FoldingSetNodeID &ID,
+                     unsigned IDHash, FoldingSetNodeID &TempID) {
+    assert(!X.isNotUniqued() && "Non-uniqued MDNode in FoldingSet?");
+    // First, check if the cached hashes match.  If they don't we can skip the
+    // expensive operand walk.
+    if (X.Hash != IDHash)
+      return false;
+
+    // If they match we have to compare the operands.
+    X.Profile(TempID);
+    return TempID == ID;
+  }
+  static unsigned ComputeHash(const MDNode &X, FoldingSetNodeID &) {
+    return X.Hash; // Return cached hash.
+  }
+};
+
+/// 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:
-  sys::SmartRWMutex<true> ConstantsLock;
+  /// 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;
@@ -105,73 +254,69 @@ public:
                          DenseMapAPFloatKeyInfo> FPMapTy;
   FPMapTy FPConstants;
   
-  StringMap<MDString*> MDStringCache;
+  StringMap<Value*> 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;
+  typedef DenseMap<FunctionType*, bool, FunctionTypeKeyInfo> FunctionTypeMap;
+  FunctionTypeMap FunctionTypes;
+  typedef DenseMap<StructType*, bool, AnonStructTypeKeyInfo> StructTypeMap;
+  StructTypeMap 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
@@ -179,45 +324,39 @@ 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();
 };
 
 }