Home | History | Annotate | Download | only in VMCore 
      1 //===-- LLVMContextImpl.cpp - Implement LLVMContextImpl -------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 //  This file implements the opaque LLVMContextImpl.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "LLVMContextImpl.h"
     15 #include "llvm/Module.h"
     16 #include "llvm/ADT/STLExtras.h"
     17 #include <algorithm>
     18 using namespace llvm;
     19 
     20 LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
     21   : TheTrueVal(0), TheFalseVal(0),
     22     VoidTy(C, Type::VoidTyID),
     23     LabelTy(C, Type::LabelTyID),
     24     HalfTy(C, Type::HalfTyID),
     25     FloatTy(C, Type::FloatTyID),
     26     DoubleTy(C, Type::DoubleTyID),
     27     MetadataTy(C, Type::MetadataTyID),
     28     X86_FP80Ty(C, Type::X86_FP80TyID),
     29     FP128Ty(C, Type::FP128TyID),
     30     PPC_FP128Ty(C, Type::PPC_FP128TyID),
     31     X86_MMXTy(C, Type::X86_MMXTyID),
     32     Int1Ty(C, 1),
     33     Int8Ty(C, 8),
     34     Int16Ty(C, 16),
     35     Int32Ty(C, 32),
     36     Int64Ty(C, 64) {
     37   InlineAsmDiagHandler = 0;
     38   InlineAsmDiagContext = 0;
     39   NamedStructTypesUniqueID = 0;
     40 }
     41 
     42 namespace {
     43 struct DropReferences {
     44   // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
     45   // is a Constant*.
     46   template<typename PairT>
     47   void operator()(const PairT &P) {
     48     P.second->dropAllReferences();
     49   }
     50 };
     51 
     52 // Temporary - drops pair.first instead of second.
     53 struct DropFirst {
     54   // Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
     55   // is a Constant*.
     56   template<typename PairT>
     57   void operator()(const PairT &P) {
     58     P.first->dropAllReferences();
     59   }
     60 };
     61 }
     62 
     63 LLVMContextImpl::~LLVMContextImpl() {
     64   // NOTE: We need to delete the contents of OwnedModules, but we have to
     65   // duplicate it into a temporary vector, because the destructor of Module
     66   // will try to remove itself from OwnedModules set.  This would cause
     67   // iterator invalidation if we iterated on the set directly.
     68   std::vector<Module*> Modules(OwnedModules.begin(), OwnedModules.end());
     69   DeleteContainerPointers(Modules);
     70 
     71   // Free the constants.  This is important to do here to ensure that they are
     72   // freed before the LeakDetector is torn down.
     73   std::for_each(ExprConstants.map_begin(), ExprConstants.map_end(),
     74                 DropReferences());
     75   std::for_each(ArrayConstants.map_begin(), ArrayConstants.map_end(),
     76                 DropFirst());
     77   std::for_each(StructConstants.map_begin(), StructConstants.map_end(),
     78                 DropFirst());
     79   std::for_each(VectorConstants.map_begin(), VectorConstants.map_end(),
     80                 DropFirst());
     81   ExprConstants.freeConstants();
     82   ArrayConstants.freeConstants();
     83   StructConstants.freeConstants();
     84   VectorConstants.freeConstants();
     85   DeleteContainerSeconds(CAZConstants);
     86   DeleteContainerSeconds(CPNConstants);
     87   DeleteContainerSeconds(UVConstants);
     88   InlineAsms.freeConstants();
     89   DeleteContainerSeconds(IntConstants);
     90   DeleteContainerSeconds(FPConstants);
     91 
     92   for (StringMap<ConstantDataSequential*>::iterator I = CDSConstants.begin(),
     93        E = CDSConstants.end(); I != E; ++I)
     94     delete I->second;
     95   CDSConstants.clear();
     96 
     97   // Destroy MDNodes.  ~MDNode can move and remove nodes between the MDNodeSet
     98   // and the NonUniquedMDNodes sets, so copy the values out first.
     99   SmallVector<MDNode*, 8> MDNodes;
    100   MDNodes.reserve(MDNodeSet.size() + NonUniquedMDNodes.size());
    101   for (FoldingSetIterator<MDNode> I = MDNodeSet.begin(), E = MDNodeSet.end();
    102        I != E; ++I)
    103     MDNodes.push_back(&*I);
    104   MDNodes.append(NonUniquedMDNodes.begin(), NonUniquedMDNodes.end());
    105   for (SmallVectorImpl<MDNode *>::iterator I = MDNodes.begin(),
    106          E = MDNodes.end(); I != E; ++I)
    107     (*I)->destroy();
    108   assert(MDNodeSet.empty() && NonUniquedMDNodes.empty() &&
    109          "Destroying all MDNodes didn't empty the Context's sets.");
    110   // Destroy MDStrings.
    111   DeleteContainerSeconds(MDStringCache);
    112 }
    113 
    114 // ConstantsContext anchors
    115 void UnaryConstantExpr::anchor() { }
    116 
    117 void BinaryConstantExpr::anchor() { }
    118 
    119 void SelectConstantExpr::anchor() { }
    120 
    121 void ExtractElementConstantExpr::anchor() { }
    122 
    123 void InsertElementConstantExpr::anchor() { }
    124 
    125 void ShuffleVectorConstantExpr::anchor() { }
    126 
    127 void ExtractValueConstantExpr::anchor() { }
    128 
    129 void InsertValueConstantExpr::anchor() { }
    130 
    131 void GetElementPtrConstantExpr::anchor() { }
    132 
    133 void CompareConstantExpr::anchor() { }
    134