2010-03-22 05:17:34 +08:00
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//===-- LLVMContextImpl.h - The LLVMContextImpl opaque class ----*- C++ -*-===//
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2009-06-30 08:48:55 +08:00
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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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2009-07-01 01:06:46 +08:00
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//
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// This file declares LLVMContextImpl, the opaque implementation
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// of LLVMContext.
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//
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//===----------------------------------------------------------------------===//
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2009-06-30 08:48:55 +08:00
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#ifndef LLVM_LLVMCONTEXT_IMPL_H
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#define LLVM_LLVMCONTEXT_IMPL_H
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2009-08-05 06:41:48 +08:00
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#include "ConstantsContext.h"
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2009-08-20 01:07:46 +08:00
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#include "LeaksContext.h"
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2009-08-05 07:33:01 +08:00
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#include "TypesContext.h"
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2009-07-21 10:47:59 +08:00
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#include "llvm/LLVMContext.h"
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2009-07-25 07:12:02 +08:00
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Metadata.h"
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2009-08-18 01:59:35 +08:00
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#include "llvm/Assembly/Writer.h"
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2009-12-29 17:01:33 +08:00
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#include "llvm/Support/ValueHandle.h"
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2009-07-17 03:05:41 +08:00
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#include "llvm/ADT/APFloat.h"
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2009-07-17 02:04:31 +08:00
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#include "llvm/ADT/APInt.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/FoldingSet.h"
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2009-12-18 03:55:06 +08:00
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#include "llvm/ADT/SmallPtrSet.h"
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2009-07-17 06:11:26 +08:00
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#include "llvm/ADT/StringMap.h"
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2009-07-24 07:25:33 +08:00
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#include <vector>
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2009-07-22 04:13:12 +08:00
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2009-06-30 08:48:55 +08:00
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namespace llvm {
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class ConstantInt;
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class ConstantFP;
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2009-08-12 01:45:13 +08:00
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class LLVMContext;
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class Type;
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class Value;
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struct DenseMapAPIntKeyInfo {
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struct KeyTy {
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APInt val;
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const Type* type;
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KeyTy(const APInt& V, const Type* Ty) : val(V), type(Ty) {}
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KeyTy(const KeyTy& that) : val(that.val), type(that.type) {}
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bool operator==(const KeyTy& that) const {
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return type == that.type && this->val == that.val;
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}
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bool operator!=(const KeyTy& that) const {
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return !this->operator==(that);
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}
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};
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static inline KeyTy getEmptyKey() { return KeyTy(APInt(1,0), 0); }
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static inline KeyTy getTombstoneKey() { return KeyTy(APInt(1,1), 0); }
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static unsigned getHashValue(const KeyTy &Key) {
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return DenseMapInfo<void*>::getHashValue(Key.type) ^
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Key.val.getHashValue();
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}
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static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
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return LHS == RHS;
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}
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};
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struct DenseMapAPFloatKeyInfo {
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struct KeyTy {
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APFloat val;
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KeyTy(const APFloat& V) : val(V){}
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KeyTy(const KeyTy& that) : val(that.val) {}
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bool operator==(const KeyTy& that) const {
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return this->val.bitwiseIsEqual(that.val);
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}
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bool operator!=(const KeyTy& that) const {
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return !this->operator==(that);
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}
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};
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static inline KeyTy getEmptyKey() {
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return KeyTy(APFloat(APFloat::Bogus,1));
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}
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static inline KeyTy getTombstoneKey() {
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return KeyTy(APFloat(APFloat::Bogus,2));
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}
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static unsigned getHashValue(const KeyTy &Key) {
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return Key.val.getHashValue();
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}
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static bool isEqual(const KeyTy &LHS, const KeyTy &RHS) {
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return LHS == RHS;
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}
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};
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2010-04-01 08:37:44 +08:00
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/// DebugRecVH - This is a CallbackVH used to keep the Scope -> index maps
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/// up to date as MDNodes mutate. This class is implemented in DebugLoc.cpp.
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class DebugRecVH : public CallbackVH {
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/// Ctx - This is the LLVM Context being referenced.
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LLVMContextImpl *Ctx;
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/// Idx - The index into either ScopeRecordIdx or ScopeInlinedAtRecords that
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/// this reference lives in. If this is zero, then it represents a
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/// non-canonical entry that has no DenseMap value. This can happen due to
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/// RAUW.
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int Idx;
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public:
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DebugRecVH(MDNode *n, LLVMContextImpl *ctx, int idx)
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: CallbackVH(n), Ctx(ctx), Idx(idx) {}
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MDNode *get() const {
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return cast_or_null<MDNode>(getValPtr());
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}
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virtual void deleted();
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virtual void allUsesReplacedWith(Value *VNew);
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};
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2009-08-12 01:45:13 +08:00
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class LLVMContextImpl {
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public:
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2010-04-06 08:44:45 +08:00
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void *InlineAsmDiagHandler, *InlineAsmDiagContext;
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2009-07-17 02:04:31 +08:00
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typedef DenseMap<DenseMapAPIntKeyInfo::KeyTy, ConstantInt*,
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DenseMapAPIntKeyInfo> IntMapTy;
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IntMapTy IntConstants;
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typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
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DenseMapAPFloatKeyInfo> FPMapTy;
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FPMapTy FPConstants;
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2009-07-17 06:11:26 +08:00
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StringMap<MDString*> MDStringCache;
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2009-09-03 09:39:20 +08:00
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FoldingSet<MDNode> MDNodeSet;
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// MDNodes may be uniqued or not uniqued. When they're not uniqued, they
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// aren't in the MDNodeSet, but they're still shared between objects, so no
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// one object can destroy them. This set allows us to at least destroy them
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// on Context destruction.
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SmallPtrSet<MDNode*, 1> NonUniquedMDNodes;
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ConstantUniqueMap<char, Type, ConstantAggregateZero> AggZeroConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, ArrayType,
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ConstantArray, true /*largekey*/> ArrayConstantsTy;
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ArrayConstantsTy ArrayConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, StructType,
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ConstantStruct, true /*largekey*/> StructConstantsTy;
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StructConstantsTy StructConstants;
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typedef ConstantUniqueMap<Constant*, UnionType, ConstantUnion>
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UnionConstantsTy;
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UnionConstantsTy UnionConstants;
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typedef ConstantUniqueMap<std::vector<Constant*>, VectorType,
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ConstantVector> VectorConstantsTy;
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VectorConstantsTy VectorConstants;
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ConstantUniqueMap<char, PointerType, ConstantPointerNull> NullPtrConstants;
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ConstantUniqueMap<char, Type, UndefValue> UndefValueConstants;
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2009-10-28 08:01:44 +08:00
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DenseMap<std::pair<Function*, BasicBlock*> , BlockAddress*> BlockAddresses;
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ConstantUniqueMap<ExprMapKeyType, Type, ConstantExpr> ExprConstants;
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2010-03-22 04:37:19 +08:00
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ConstantUniqueMap<InlineAsmKeyType, PointerType, InlineAsm> InlineAsms;
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2009-08-05 04:25:11 +08:00
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2009-07-21 10:47:59 +08:00
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ConstantInt *TheTrueVal;
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ConstantInt *TheFalseVal;
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2009-08-20 01:07:46 +08:00
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LeakDetectorImpl<Value> LLVMObjects;
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2009-08-26 00:00:35 +08:00
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// Basic type instances.
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const Type VoidTy;
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const Type LabelTy;
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const Type FloatTy;
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const Type DoubleTy;
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const Type MetadataTy;
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const Type X86_FP80Ty;
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const Type FP128Ty;
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const Type PPC_FP128Ty;
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const IntegerType Int1Ty;
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const IntegerType Int8Ty;
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const IntegerType Int16Ty;
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const IntegerType Int32Ty;
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const IntegerType Int64Ty;
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2009-08-18 01:59:35 +08:00
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// Concrete/Abstract TypeDescriptions - We lazily calculate type descriptions
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// for types as they are needed. Because resolution of types must invalidate
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// all of the abstract type descriptions, we keep them in a seperate map to
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// make this easy.
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TypePrinting ConcreteTypeDescriptions;
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TypePrinting AbstractTypeDescriptions;
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2009-08-05 07:33:01 +08:00
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TypeMap<ArrayValType, ArrayType> ArrayTypes;
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TypeMap<VectorValType, VectorType> VectorTypes;
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TypeMap<PointerValType, PointerType> PointerTypes;
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TypeMap<FunctionValType, FunctionType> FunctionTypes;
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TypeMap<StructValType, StructType> StructTypes;
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TypeMap<UnionValType, UnionType> UnionTypes;
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2009-08-14 07:27:32 +08:00
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TypeMap<IntegerValType, IntegerType> IntegerTypes;
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2009-08-26 00:00:35 +08:00
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2009-12-18 03:55:06 +08:00
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// Opaque types are not structurally uniqued, so don't use TypeMap.
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typedef SmallPtrSet<const OpaqueType*, 8> OpaqueTypesTy;
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OpaqueTypesTy OpaqueTypes;
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/// Used as an abstract type that will never be resolved.
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OpaqueType *const AlwaysOpaqueTy;
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2009-12-18 03:55:06 +08:00
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2009-08-19 02:28:58 +08:00
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/// ValueHandles - This map keeps track of all of the value handles that are
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/// watching a Value*. The Value::HasValueHandle bit is used to know
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// whether or not a value has an entry in this map.
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typedef DenseMap<Value*, ValueHandleBase*> ValueHandlesTy;
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ValueHandlesTy ValueHandles;
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2009-12-29 17:01:33 +08:00
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/// CustomMDKindNames - Map to hold the metadata string to ID mapping.
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StringMap<unsigned> CustomMDKindNames;
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typedef std::pair<unsigned, TrackingVH<MDNode> > MDPairTy;
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typedef SmallVector<MDPairTy, 2> MDMapTy;
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/// MetadataStore - Collection of per-instruction metadata used in this
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/// context.
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DenseMap<const Instruction *, MDMapTy> MetadataStore;
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2010-04-01 08:37:44 +08:00
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/// ScopeRecordIdx - This is the index in ScopeRecords for an MDNode scope
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/// entry with no "inlined at" element.
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DenseMap<MDNode*, int> ScopeRecordIdx;
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/// ScopeRecords - These are the actual mdnodes (in a value handle) for an
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/// index. The ValueHandle ensures that ScopeRecordIdx stays up to date if
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/// the MDNode is RAUW'd.
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std::vector<DebugRecVH> ScopeRecords;
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/// ScopeInlinedAtIdx - This is the index in ScopeInlinedAtRecords for an
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/// scope/inlined-at pair.
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DenseMap<std::pair<MDNode*, MDNode*>, int> ScopeInlinedAtIdx;
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/// ScopeInlinedAtRecords - These are the actual mdnodes (in value handles)
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/// for an index. The ValueHandle ensures that ScopeINlinedAtIdx stays up
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/// to date.
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std::vector<std::pair<DebugRecVH, DebugRecVH> > ScopeInlinedAtRecords;
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int getOrAddScopeRecordIdxEntry(MDNode *N, int ExistingIdx);
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int getOrAddScopeInlinedAtIdxEntry(MDNode *Scope, MDNode *IA,int ExistingIdx);
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2010-03-22 05:17:34 +08:00
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LLVMContextImpl(LLVMContext &C);
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~LLVMContextImpl();
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2009-06-30 08:48:55 +08:00
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};
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}
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2009-07-01 01:06:46 +08:00
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#endif
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