X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FVMCore%2FLLVMContextImpl.h;h=6ea4b48e79b78635c2f649f7d9891695a0a0f70a;hb=6c3541d5597033bdb2f26f5ade811b482c32a39a;hp=9887f28821cacfbc12500265f8f37481e688a875;hpb=e5790a432a320c64440bf62adbcec378046eef6b;p=oota-llvm.git

diff --git a/lib/VMCore/LLVMContextImpl.h b/lib/VMCore/LLVMContextImpl.h
index 9887f28821c..6ea4b48e79b 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
 //
@@ -19,9 +19,9 @@
 #include "LeaksContext.h"
 #include "TypesContext.h"
 #include "llvm/LLVMContext.h"
-#include "llvm/Metadata.h"
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
+#include "llvm/Metadata.h"
 #include "llvm/Assembly/Writer.h"
 #include "llvm/Support/ValueHandle.h"
 #include "llvm/ADT/APFloat.h"
@@ -36,8 +36,6 @@ namespace llvm {
 
 class ConstantInt;
 class ConstantFP;
-class MDString;
-class MDNode;
 class LLVMContext;
 class Type;
 class Value;
@@ -92,8 +90,38 @@ struct DenseMapAPFloatKeyInfo {
   }
 };
 
+/// 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;
@@ -105,6 +133,11 @@ 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;
   
   ConstantUniqueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
 
@@ -116,20 +149,17 @@ public:
     ConstantStruct, true /*largekey*/> StructConstantsTy;
   StructConstantsTy StructConstants;
   
-  typedef ConstantUniqueMap<Constant*, UnionType, ConstantUnion>
-      UnionConstantsTy;
-  UnionConstantsTy UnionConstants;
-  
   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;
   
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
@@ -145,6 +175,7 @@ public:
   const Type X86_FP80Ty;
   const Type FP128Ty;
   const Type PPC_FP128Ty;
+  const Type X86_MMXTy;
   const IntegerType Int1Ty;
   const IntegerType Int8Ty;
   const IntegerType Int16Ty;
@@ -153,7 +184,7 @@ public:
 
   // 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 
+  // all of the abstract type descriptions, we keep them in a separate map to
   // make this easy.
   TypePrinting ConcreteTypeDescriptions;
   TypePrinting AbstractTypeDescriptions;
@@ -163,7 +194,6 @@ public:
   TypeMap<PointerValType, PointerType> PointerTypes;
   TypeMap<FunctionValType, FunctionType> FunctionTypes;
   TypeMap<StructValType, StructType> StructTypes;
-  TypeMap<UnionValType, UnionType> UnionTypes;
   TypeMap<IntegerValType, IntegerType> IntegerTypes;
 
   // Opaque types are not structurally uniqued, so don't use TypeMap.
@@ -190,68 +220,29 @@ public:
   /// 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;
   
-  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),
-    AlwaysOpaqueTy(new OpaqueType(C)) {
-    // Make sure the AlwaysOpaqueTy stays alive as long as the Context.
-    AlwaysOpaqueTy->addRef();
-    OpaqueTypes.insert(AlwaysOpaqueTy);
-  }
-
-  ~LLVMContextImpl() {
-    ExprConstants.freeConstants();
-    ArrayConstants.freeConstants();
-    StructConstants.freeConstants();
-    VectorConstants.freeConstants();
-    AggZeroConstants.freeConstants();
-    NullPtrConstants.freeConstants();
-    UndefValueConstants.freeConstants();
-    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;
-    }
-    AlwaysOpaqueTy->dropRef();
-    for (OpaqueTypesTy::iterator I = OpaqueTypes.begin(), E = OpaqueTypes.end();
-        I != E; ++I) {
-      (*I)->AbstractTypeUsers.clear();
-      delete *I;
-    }
-    // Destroy MDNode operands first.
-    for (FoldingSetIterator<MDNode> I = MDNodeSet.begin(), E = MDNodeSet.end();
-         I != E;) {
-      MDNode *N = &(*I);
-      ++I;
-      N->replaceAllOperandsWithNull();
-    }
-    while (!MDNodeSet.empty()) {
-      MDNode *N = &(*MDNodeSet.begin());
-      N->destroy();
-    }
-    // Destroy MDStrings.
-    for (StringMap<MDString*>::iterator I = MDStringCache.begin(),
-           E = MDStringCache.end(); I != E; ++I) {
-      delete I->second;
-    }
-  }
+  /// 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();
 };
 
 }