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c1dc067970
by dropping all references from all constants that can use other constants before trying to destroy any of them. I also had to free bugpoint's Module in ~BugDriver(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99160 91177308-0d34-0410-b5e6-96231b3b80d8
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
//===-- LLVMContextImpl.cpp - Implement LLVMContextImpl -------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the opaque LLVMContextImpl.
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//
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//===----------------------------------------------------------------------===//
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#include "LLVMContextImpl.h"
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#include <algorithm>
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LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
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: TheTrueVal(0), TheFalseVal(0),
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VoidTy(C, Type::VoidTyID),
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LabelTy(C, Type::LabelTyID),
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FloatTy(C, Type::FloatTyID),
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DoubleTy(C, Type::DoubleTyID),
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MetadataTy(C, Type::MetadataTyID),
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X86_FP80Ty(C, Type::X86_FP80TyID),
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FP128Ty(C, Type::FP128TyID),
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PPC_FP128Ty(C, Type::PPC_FP128TyID),
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Int1Ty(C, 1),
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Int8Ty(C, 8),
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Int16Ty(C, 16),
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Int32Ty(C, 32),
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Int64Ty(C, 64),
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AlwaysOpaqueTy(new OpaqueType(C)) {
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// Make sure the AlwaysOpaqueTy stays alive as long as the Context.
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AlwaysOpaqueTy->addRef();
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OpaqueTypes.insert(AlwaysOpaqueTy);
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}
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namespace {
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struct DropReferences {
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// Takes the value_type of a ConstantUniqueMap's internal map, whose 'second'
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// is a Constant*.
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template<typename PairT>
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void operator()(const PairT &P) {
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P.second->dropAllReferences();
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}
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};
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}
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LLVMContextImpl::~LLVMContextImpl() {
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std::for_each(ExprConstants.map_begin(), ExprConstants.map_end(),
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DropReferences());
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std::for_each(ArrayConstants.map_begin(), ArrayConstants.map_end(),
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DropReferences());
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std::for_each(StructConstants.map_begin(), StructConstants.map_end(),
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DropReferences());
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std::for_each(UnionConstants.map_begin(), UnionConstants.map_end(),
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DropReferences());
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std::for_each(VectorConstants.map_begin(), VectorConstants.map_end(),
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DropReferences());
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ExprConstants.freeConstants();
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ArrayConstants.freeConstants();
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StructConstants.freeConstants();
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UnionConstants.freeConstants();
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VectorConstants.freeConstants();
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AggZeroConstants.freeConstants();
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NullPtrConstants.freeConstants();
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UndefValueConstants.freeConstants();
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InlineAsms.freeConstants();
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for (IntMapTy::iterator I = IntConstants.begin(), E = IntConstants.end();
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I != E; ++I) {
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delete I->second;
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}
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for (FPMapTy::iterator I = FPConstants.begin(), E = FPConstants.end();
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I != E; ++I) {
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delete I->second;
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}
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AlwaysOpaqueTy->dropRef();
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for (OpaqueTypesTy::iterator I = OpaqueTypes.begin(), E = OpaqueTypes.end();
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I != E; ++I) {
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(*I)->AbstractTypeUsers.clear();
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delete *I;
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}
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// Destroy MDNodes. ~MDNode can move and remove nodes between the MDNodeSet
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// and the NonUniquedMDNodes sets, so copy the values out first.
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SmallVector<MDNode*, 8> MDNodes;
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MDNodes.reserve(MDNodeSet.size() + NonUniquedMDNodes.size());
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for (FoldingSetIterator<MDNode> I = MDNodeSet.begin(), E = MDNodeSet.end();
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I != E; ++I) {
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MDNodes.push_back(&*I);
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}
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MDNodes.append(NonUniquedMDNodes.begin(), NonUniquedMDNodes.end());
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for (SmallVector<MDNode*, 8>::iterator I = MDNodes.begin(),
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E = MDNodes.end(); I != E; ++I) {
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(*I)->destroy();
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}
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assert(MDNodeSet.empty() && NonUniquedMDNodes.empty() &&
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"Destroying all MDNodes didn't empty the Context's sets.");
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// Destroy MDStrings.
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for (StringMap<MDString*>::iterator I = MDStringCache.begin(),
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E = MDStringCache.end(); I != E; ++I) {
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delete I->second;
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}
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}
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