diff options
Diffstat (limited to 'include/llvm/IR/Instructions.h')
| -rw-r--r-- | include/llvm/IR/Instructions.h | 445 |
1 files changed, 180 insertions, 265 deletions
diff --git a/include/llvm/IR/Instructions.h b/include/llvm/IR/Instructions.h index e05c3a8..0843d8f 100644 --- a/include/llvm/IR/Instructions.h +++ b/include/llvm/IR/Instructions.h @@ -23,8 +23,6 @@ #include "llvm/IR/DerivedTypes.h" #include "llvm/IR/InstrTypes.h" #include "llvm/Support/ErrorHandling.h" -#include "llvm/Support/IntegersSubset.h" -#include "llvm/Support/IntegersSubsetMapping.h" #include <iterator> namespace llvm { @@ -911,6 +909,18 @@ DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GetElementPtrInst, Value) /// must be identical types. /// \brief Represent an integer comparison operator. class ICmpInst: public CmpInst { + void AssertOK() { + assert(getPredicate() >= CmpInst::FIRST_ICMP_PREDICATE && + getPredicate() <= CmpInst::LAST_ICMP_PREDICATE && + "Invalid ICmp predicate value"); + assert(getOperand(0)->getType() == getOperand(1)->getType() && + "Both operands to ICmp instruction are not of the same type!"); + // Check that the operands are the right type + assert((getOperand(0)->getType()->isIntOrIntVectorTy() || + getOperand(0)->getType()->isPtrOrPtrVectorTy()) && + "Invalid operand types for ICmp instruction"); + } + protected: /// \brief Clone an identical ICmpInst virtual ICmpInst *clone_impl() const; @@ -925,15 +935,9 @@ public: ) : CmpInst(makeCmpResultType(LHS->getType()), Instruction::ICmp, pred, LHS, RHS, NameStr, InsertBefore) { - assert(pred >= CmpInst::FIRST_ICMP_PREDICATE && - pred <= CmpInst::LAST_ICMP_PREDICATE && - "Invalid ICmp predicate value"); - assert(getOperand(0)->getType() == getOperand(1)->getType() && - "Both operands to ICmp instruction are not of the same type!"); - // Check that the operands are the right type - assert((getOperand(0)->getType()->isIntOrIntVectorTy() || - getOperand(0)->getType()->getScalarType()->isPointerTy()) && - "Invalid operand types for ICmp instruction"); +#ifndef NDEBUG + AssertOK(); +#endif } /// \brief Constructor with insert-at-end semantics. @@ -946,15 +950,9 @@ public: ) : CmpInst(makeCmpResultType(LHS->getType()), Instruction::ICmp, pred, LHS, RHS, NameStr, &InsertAtEnd) { - assert(pred >= CmpInst::FIRST_ICMP_PREDICATE && - pred <= CmpInst::LAST_ICMP_PREDICATE && - "Invalid ICmp predicate value"); - assert(getOperand(0)->getType() == getOperand(1)->getType() && - "Both operands to ICmp instruction are not of the same type!"); - // Check that the operands are the right type - assert((getOperand(0)->getType()->isIntOrIntVectorTy() || - getOperand(0)->getType()->getScalarType()->isPointerTy()) && - "Invalid operand types for ICmp instruction"); +#ifndef NDEBUG + AssertOK(); +#endif } /// \brief Constructor with no-insertion semantics @@ -965,15 +963,9 @@ public: const Twine &NameStr = "" ///< Name of the instruction ) : CmpInst(makeCmpResultType(LHS->getType()), Instruction::ICmp, pred, LHS, RHS, NameStr) { - assert(pred >= CmpInst::FIRST_ICMP_PREDICATE && - pred <= CmpInst::LAST_ICMP_PREDICATE && - "Invalid ICmp predicate value"); - assert(getOperand(0)->getType() == getOperand(1)->getType() && - "Both operands to ICmp instruction are not of the same type!"); - // Check that the operands are the right type - assert((getOperand(0)->getType()->isIntOrIntVectorTy() || - getOperand(0)->getType()->getScalarType()->isPointerTy()) && - "Invalid operand types for ICmp instruction"); +#ifndef NDEBUG + AssertOK(); +#endif } /// For example, EQ->EQ, SLE->SLE, UGT->SGT, etc. @@ -2457,31 +2449,10 @@ DEFINE_TRANSPARENT_OPERAND_ACCESSORS(BranchInst, Value) class SwitchInst : public TerminatorInst { void *operator new(size_t, unsigned) LLVM_DELETED_FUNCTION; unsigned ReservedSpace; - // Operands format: // Operand[0] = Value to switch on // Operand[1] = Default basic block destination // Operand[2n ] = Value to match // Operand[2n+1] = BasicBlock to go to on match - - // Store case values separately from operands list. We needn't User-Use - // concept here, since it is just a case value, it will always constant, - // and case value couldn't reused with another instructions/values. - // Additionally: - // It allows us to use custom type for case values that is not inherited - // from Value. Since case value is a complex type that implements - // the subset of integers, we needn't extract sub-constants within - // slow getAggregateElement method. - // For case values we will use std::list to by two reasons: - // 1. It allows to add/remove cases without whole collection reallocation. - // 2. In most of cases we needn't random access. - // Currently case values are also stored in Operands List, but it will moved - // out in future commits. - typedef std::list<IntegersSubset> Subsets; - typedef Subsets::iterator SubsetsIt; - typedef Subsets::const_iterator SubsetsConstIt; - - Subsets TheSubsets; - SwitchInst(const SwitchInst &SI); void init(Value *Value, BasicBlock *Default, unsigned NumReserved); void growOperands(); @@ -2506,25 +2477,121 @@ protected: virtual SwitchInst *clone_impl() const; public: - // FIXME: Currently there are a lot of unclean template parameters, - // we need to make refactoring in future. - // All these parameters are used to implement both iterator and const_iterator - // without code duplication. - // SwitchInstTy may be "const SwitchInst" or "SwitchInst" - // ConstantIntTy may be "const ConstantInt" or "ConstantInt" - // SubsetsItTy may be SubsetsConstIt or SubsetsIt - // BasicBlockTy may be "const BasicBlock" or "BasicBlock" - template <class SwitchInstTy, class ConstantIntTy, - class SubsetsItTy, class BasicBlockTy> - class CaseIteratorT; - - typedef CaseIteratorT<const SwitchInst, const ConstantInt, - SubsetsConstIt, const BasicBlock> ConstCaseIt; - class CaseIt; - // -2 static const unsigned DefaultPseudoIndex = static_cast<unsigned>(~0L-1); + template <class SwitchInstTy, class ConstantIntTy, class BasicBlockTy> + class CaseIteratorT { + protected: + + SwitchInstTy *SI; + unsigned Index; + + public: + + typedef CaseIteratorT<SwitchInstTy, ConstantIntTy, BasicBlockTy> Self; + + /// Initializes case iterator for given SwitchInst and for given + /// case number. + CaseIteratorT(SwitchInstTy *SI, unsigned CaseNum) { + this->SI = SI; + Index = CaseNum; + } + + /// Initializes case iterator for given SwitchInst and for given + /// TerminatorInst's successor index. + static Self fromSuccessorIndex(SwitchInstTy *SI, unsigned SuccessorIndex) { + assert(SuccessorIndex < SI->getNumSuccessors() && + "Successor index # out of range!"); + return SuccessorIndex != 0 ? + Self(SI, SuccessorIndex - 1) : + Self(SI, DefaultPseudoIndex); + } + + /// Resolves case value for current case. + ConstantIntTy *getCaseValue() { + assert(Index < SI->getNumCases() && "Index out the number of cases."); + return reinterpret_cast<ConstantIntTy*>(SI->getOperand(2 + Index*2)); + } + + /// Resolves successor for current case. + BasicBlockTy *getCaseSuccessor() { + assert((Index < SI->getNumCases() || + Index == DefaultPseudoIndex) && + "Index out the number of cases."); + return SI->getSuccessor(getSuccessorIndex()); + } + + /// Returns number of current case. + unsigned getCaseIndex() const { return Index; } + + /// Returns TerminatorInst's successor index for current case successor. + unsigned getSuccessorIndex() const { + assert((Index == DefaultPseudoIndex || Index < SI->getNumCases()) && + "Index out the number of cases."); + return Index != DefaultPseudoIndex ? Index + 1 : 0; + } + + Self operator++() { + // Check index correctness after increment. + // Note: Index == getNumCases() means end(). + assert(Index+1 <= SI->getNumCases() && "Index out the number of cases."); + ++Index; + return *this; + } + Self operator++(int) { + Self tmp = *this; + ++(*this); + return tmp; + } + Self operator--() { + // Check index correctness after decrement. + // Note: Index == getNumCases() means end(). + // Also allow "-1" iterator here. That will became valid after ++. + assert((Index == 0 || Index-1 <= SI->getNumCases()) && + "Index out the number of cases."); + --Index; + return *this; + } + Self operator--(int) { + Self tmp = *this; + --(*this); + return tmp; + } + bool operator==(const Self& RHS) const { + assert(RHS.SI == SI && "Incompatible operators."); + return RHS.Index == Index; + } + bool operator!=(const Self& RHS) const { + assert(RHS.SI == SI && "Incompatible operators."); + return RHS.Index != Index; + } + }; + + typedef CaseIteratorT<const SwitchInst, const ConstantInt, const BasicBlock> + ConstCaseIt; + + class CaseIt : public CaseIteratorT<SwitchInst, ConstantInt, BasicBlock> { + + typedef CaseIteratorT<SwitchInst, ConstantInt, BasicBlock> ParentTy; + + public: + + CaseIt(const ParentTy& Src) : ParentTy(Src) {} + CaseIt(SwitchInst *SI, unsigned CaseNum) : ParentTy(SI, CaseNum) {} + + /// Sets the new value for current case. + void setValue(ConstantInt *V) { + assert(Index < SI->getNumCases() && "Index out the number of cases."); + SI->setOperand(2 + Index*2, reinterpret_cast<Value*>(V)); + } + + /// Sets the new successor for current case. + void setSuccessor(BasicBlock *S) { + SI->setSuccessor(getSuccessorIndex(), S); + } + }; + static SwitchInst *Create(Value *Value, BasicBlock *Default, unsigned NumCases, Instruction *InsertBefore = 0) { return new SwitchInst(Value, Default, NumCases, InsertBefore); @@ -2560,23 +2627,23 @@ public: /// Returns a read/write iterator that points to the first /// case in SwitchInst. CaseIt case_begin() { - return CaseIt(this, 0, TheSubsets.begin()); + return CaseIt(this, 0); } /// Returns a read-only iterator that points to the first /// case in the SwitchInst. ConstCaseIt case_begin() const { - return ConstCaseIt(this, 0, TheSubsets.begin()); + return ConstCaseIt(this, 0); } /// Returns a read/write iterator that points one past the last /// in the SwitchInst. CaseIt case_end() { - return CaseIt(this, getNumCases(), TheSubsets.end()); + return CaseIt(this, getNumCases()); } /// Returns a read-only iterator that points one past the last /// in the SwitchInst. ConstCaseIt case_end() const { - return ConstCaseIt(this, getNumCases(), TheSubsets.end()); + return ConstCaseIt(this, getNumCases()); } /// Returns an iterator that points to the default case. /// Note: this iterator allows to resolve successor only. Attempt @@ -2584,10 +2651,10 @@ public: /// Also note, that increment and decrement also causes an assertion and /// makes iterator invalid. CaseIt case_default() { - return CaseIt(this, DefaultPseudoIndex, TheSubsets.end()); + return CaseIt(this, DefaultPseudoIndex); } ConstCaseIt case_default() const { - return ConstCaseIt(this, DefaultPseudoIndex, TheSubsets.end()); + return ConstCaseIt(this, DefaultPseudoIndex); } /// findCaseValue - Search all of the case values for the specified constant. @@ -2596,13 +2663,13 @@ public: /// that it is handled by the default handler. CaseIt findCaseValue(const ConstantInt *C) { for (CaseIt i = case_begin(), e = case_end(); i != e; ++i) - if (i.getCaseValueEx().isSatisfies(IntItem::fromConstantInt(C))) + if (i.getCaseValue() == C) return i; return case_default(); } ConstCaseIt findCaseValue(const ConstantInt *C) const { for (ConstCaseIt i = case_begin(), e = case_end(); i != e; ++i) - if (i.getCaseValueEx().isSatisfies(IntItem::fromConstantInt(C))) + if (i.getCaseValue() == C) return i; return case_default(); } @@ -2628,19 +2695,13 @@ public: /// point to the added case. void addCase(ConstantInt *OnVal, BasicBlock *Dest); - /// addCase - Add an entry to the switch instruction. - /// Note: - /// This action invalidates case_end(). Old case_end() iterator will - /// point to the added case. - void addCase(IntegersSubset& OnVal, BasicBlock *Dest); - /// removeCase - This method removes the specified case and its successor /// from the switch instruction. Note that this operation may reorder the /// remaining cases at index idx and above. /// Note: /// This action invalidates iterators for all cases following the one removed, /// including the case_end() iterator. - void removeCase(CaseIt& i); + void removeCase(CaseIt i); unsigned getNumSuccessors() const { return getNumOperands()/2; } BasicBlock *getSuccessor(unsigned idx) const { @@ -2652,190 +2713,7 @@ public: setOperand(idx*2+1, (Value*)NewSucc); } - uint16_t hash() const { - uint32_t NumberOfCases = (uint32_t)getNumCases(); - uint16_t Hash = (0xFFFF & NumberOfCases) ^ (NumberOfCases >> 16); - for (ConstCaseIt i = case_begin(), e = case_end(); - i != e; ++i) { - uint32_t NumItems = (uint32_t)i.getCaseValueEx().getNumItems(); - Hash = (Hash << 1) ^ (0xFFFF & NumItems) ^ (NumItems >> 16); - } - return Hash; - } - - // Case iterators definition. - - template <class SwitchInstTy, class ConstantIntTy, - class SubsetsItTy, class BasicBlockTy> - class CaseIteratorT { - protected: - - SwitchInstTy *SI; - unsigned Index; - SubsetsItTy SubsetIt; - - /// Initializes case iterator for given SwitchInst and for given - /// case number. - friend class SwitchInst; - CaseIteratorT(SwitchInstTy *SI, unsigned SuccessorIndex, - SubsetsItTy CaseValueIt) { - this->SI = SI; - Index = SuccessorIndex; - this->SubsetIt = CaseValueIt; - } - - public: - typedef typename SubsetsItTy::reference IntegersSubsetRef; - typedef CaseIteratorT<SwitchInstTy, ConstantIntTy, - SubsetsItTy, BasicBlockTy> Self; - - CaseIteratorT(SwitchInstTy *SI, unsigned CaseNum) { - this->SI = SI; - Index = CaseNum; - SubsetIt = SI->TheSubsets.begin(); - std::advance(SubsetIt, CaseNum); - } - - - /// Initializes case iterator for given SwitchInst and for given - /// TerminatorInst's successor index. - static Self fromSuccessorIndex(SwitchInstTy *SI, unsigned SuccessorIndex) { - assert(SuccessorIndex < SI->getNumSuccessors() && - "Successor index # out of range!"); - return SuccessorIndex != 0 ? - Self(SI, SuccessorIndex - 1) : - Self(SI, DefaultPseudoIndex); - } - - /// Resolves case value for current case. - ConstantIntTy *getCaseValue() { - assert(Index < SI->getNumCases() && "Index out the number of cases."); - IntegersSubsetRef CaseRanges = *SubsetIt; - - // FIXME: Currently we work with ConstantInt based cases. - // So return CaseValue as ConstantInt. - return CaseRanges.getSingleNumber(0).toConstantInt(); - } - - /// Resolves case value for current case. - IntegersSubsetRef getCaseValueEx() { - assert(Index < SI->getNumCases() && "Index out the number of cases."); - return *SubsetIt; - } - - /// Resolves successor for current case. - BasicBlockTy *getCaseSuccessor() { - assert((Index < SI->getNumCases() || - Index == DefaultPseudoIndex) && - "Index out the number of cases."); - return SI->getSuccessor(getSuccessorIndex()); - } - - /// Returns number of current case. - unsigned getCaseIndex() const { return Index; } - - /// Returns TerminatorInst's successor index for current case successor. - unsigned getSuccessorIndex() const { - assert((Index == DefaultPseudoIndex || Index < SI->getNumCases()) && - "Index out the number of cases."); - return Index != DefaultPseudoIndex ? Index + 1 : 0; - } - - Self operator++() { - // Check index correctness after increment. - // Note: Index == getNumCases() means end(). - assert(Index+1 <= SI->getNumCases() && "Index out the number of cases."); - ++Index; - if (Index == 0) - SubsetIt = SI->TheSubsets.begin(); - else - ++SubsetIt; - return *this; - } - Self operator++(int) { - Self tmp = *this; - ++(*this); - return tmp; - } - Self operator--() { - // Check index correctness after decrement. - // Note: Index == getNumCases() means end(). - // Also allow "-1" iterator here. That will became valid after ++. - unsigned NumCases = SI->getNumCases(); - assert((Index == 0 || Index-1 <= NumCases) && - "Index out the number of cases."); - --Index; - if (Index == NumCases) { - SubsetIt = SI->TheSubsets.end(); - return *this; - } - - if (Index != -1U) - --SubsetIt; - - return *this; - } - Self operator--(int) { - Self tmp = *this; - --(*this); - return tmp; - } - bool operator==(const Self& RHS) const { - assert(RHS.SI == SI && "Incompatible operators."); - return RHS.Index == Index; - } - bool operator!=(const Self& RHS) const { - assert(RHS.SI == SI && "Incompatible operators."); - return RHS.Index != Index; - } - }; - - class CaseIt : public CaseIteratorT<SwitchInst, ConstantInt, - SubsetsIt, BasicBlock> { - typedef CaseIteratorT<SwitchInst, ConstantInt, SubsetsIt, BasicBlock> - ParentTy; - - protected: - friend class SwitchInst; - CaseIt(SwitchInst *SI, unsigned CaseNum, SubsetsIt SubsetIt) : - ParentTy(SI, CaseNum, SubsetIt) {} - - void updateCaseValueOperand(IntegersSubset& V) { - SI->setOperand(2 + Index*2, reinterpret_cast<Value*>((Constant*)V)); - } - - public: - - CaseIt(SwitchInst *SI, unsigned CaseNum) : ParentTy(SI, CaseNum) {} - - CaseIt(const ParentTy& Src) : ParentTy(Src) {} - - /// Sets the new value for current case. - void setValue(ConstantInt *V) { - assert(Index < SI->getNumCases() && "Index out the number of cases."); - IntegersSubsetToBB Mapping; - // FIXME: Currently we work with ConstantInt based cases. - // So inititalize IntItem container directly from ConstantInt. - Mapping.add(IntItem::fromConstantInt(V)); - *SubsetIt = Mapping.getCase(); - updateCaseValueOperand(*SubsetIt); - } - - /// Sets the new value for current case. - void setValueEx(IntegersSubset& V) { - assert(Index < SI->getNumCases() && "Index out the number of cases."); - *SubsetIt = V; - updateCaseValueOperand(*SubsetIt); - } - - /// Sets the new successor for current case. - void setSuccessor(BasicBlock *S) { - SI->setSuccessor(getSuccessorIndex(), S); - } - }; - // Methods for support type inquiry through isa, cast, and dyn_cast: - static inline bool classof(const Instruction *I) { return I->getOpcode() == Instruction::Switch; } @@ -3034,7 +2912,7 @@ public: /// removeAttribute - removes the attribute from the list of attributes. void removeAttribute(unsigned i, Attribute attr); - /// \brief Determine whether this call has the NoAlias attribute. + /// \brief Determine whether this call has the given attribute. bool hasFnAttr(Attribute::AttrKind A) const { assert(A != Attribute::NoBuiltin && "Use CallInst::isNoBuiltin() to check for Attribute::NoBuiltin"); @@ -3737,6 +3615,43 @@ public: } }; +//===----------------------------------------------------------------------===// +// AddrSpaceCastInst Class +//===----------------------------------------------------------------------===// + +/// \brief This class represents a conversion between pointers from +/// one address space to another. +class AddrSpaceCastInst : public CastInst { +protected: + /// \brief Clone an identical AddrSpaceCastInst + virtual AddrSpaceCastInst *clone_impl() const; + +public: + /// \brief Constructor with insert-before-instruction semantics + AddrSpaceCastInst( + Value *S, ///< The value to be casted + Type *Ty, ///< The type to casted to + const Twine &NameStr = "", ///< A name for the new instruction + Instruction *InsertBefore = 0 ///< Where to insert the new instruction + ); + + /// \brief Constructor with insert-at-end-of-block semantics + AddrSpaceCastInst( + Value *S, ///< The value to be casted + Type *Ty, ///< The type to casted to + const Twine &NameStr, ///< A name for the new instruction + BasicBlock *InsertAtEnd ///< The block to insert the instruction into + ); + + // Methods for support type inquiry through isa, cast, and dyn_cast: + static inline bool classof(const Instruction *I) { + return I->getOpcode() == AddrSpaceCast; + } + static inline bool classof(const Value *V) { + return isa<Instruction>(V) && classof(cast<Instruction>(V)); + } +}; + } // End llvm namespace #endif |