X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FMachineFunction.h;h=b80db057d4b970253a755bc2af92c596b59c6834;hb=b2700222ecba0d186f8db173dbbdba6f2330eab6;hp=0eb9d0e5098abeefa07a8ed3a1b162660b39a25b;hpb=96601ca332ab388754ca4673be8973396fea2ddd;p=oota-llvm.git diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h index 0eb9d0e5098..b80db057d4b 100644 --- a/include/llvm/CodeGen/MachineFunction.h +++ b/include/llvm/CodeGen/MachineFunction.h @@ -18,10 +18,12 @@ #ifndef LLVM_CODEGEN_MACHINEFUNCTION_H #define LLVM_CODEGEN_MACHINEFUNCTION_H -#include "llvm/CodeGen/MachineBasicBlock.h" #include "llvm/ADT/ilist.h" -#include "llvm/Support/DebugLoc.h" +#include "llvm/CodeGen/MachineBasicBlock.h" +#include "llvm/IR/DebugLoc.h" +#include "llvm/IR/Metadata.h" #include "llvm/Support/Allocator.h" +#include "llvm/Support/ArrayRecycler.h" #include "llvm/Support/Recycler.h" namespace llvm { @@ -36,7 +38,9 @@ class MachineJumpTableInfo; class MachineModuleInfo; class MCContext; class Pass; +class PseudoSourceValueManager; class TargetMachine; +class TargetSubtargetInfo; class TargetRegisterClass; struct MachinePointerInfo; @@ -69,15 +73,24 @@ private: /// MachineFunction is destroyed. struct MachineFunctionInfo { virtual ~MachineFunctionInfo(); + + /// \brief Factory function: default behavior is to call new using the + /// supplied allocator. + /// + /// This function can be overridden in a derive class. + template + static Ty *create(BumpPtrAllocator &Allocator, MachineFunction &MF) { + return new (Allocator.Allocate()) Ty(MF); + } }; class MachineFunction { const Function *Fn; const TargetMachine &Target; + const TargetSubtargetInfo *STI; MCContext &Ctx; MachineModuleInfo &MMI; - GCModuleInfo *GMI; - + // RegInfo - Information about each register in use in the function. MachineRegisterInfo *RegInfo; @@ -90,7 +103,7 @@ class MachineFunction { // Keep track of constants which are spilled to memory MachineConstantPool *ConstantPool; - + // Keep track of jump tables for switch instructions MachineJumpTableInfo *JumpTableInfo; @@ -105,6 +118,9 @@ class MachineFunction { // Allocation management for instructions in function. Recycler InstructionRecycler; + // Allocation management for operand arrays on instructions. + ArrayRecycler OperandRecycler; + // Allocation management for basic blocks in function. Recycler BasicBlockRecycler; @@ -116,7 +132,7 @@ class MachineFunction { /// this translation unit. /// unsigned FunctionNumber; - + /// Alignment - The alignment of the function. unsigned Alignment; @@ -127,18 +143,27 @@ class MachineFunction { /// about the control flow of such functions. bool ExposesReturnsTwice; - MachineFunction(const MachineFunction &); // DO NOT IMPLEMENT - void operator=(const MachineFunction&); // DO NOT IMPLEMENT + /// True if the function includes any inline assembly. + bool HasInlineAsm; + + // Allocation management for pseudo source values. + std::unique_ptr PSVManager; + + MachineFunction(const MachineFunction &) = delete; + void operator=(const MachineFunction&) = delete; public: MachineFunction(const Function *Fn, const TargetMachine &TM, - unsigned FunctionNum, MachineModuleInfo &MMI, - GCModuleInfo* GMI); + unsigned FunctionNum, MachineModuleInfo &MMI); ~MachineFunction(); MachineModuleInfo &getMMI() const { return MMI; } - GCModuleInfo *getGMI() const { return GMI; } MCContext &getContext() const { return Ctx; } + PseudoSourceValueManager &getPSVManager() const { return *PSVManager; } + + /// Return the DataLayout attached to the Module associated to this MF. + const DataLayout &getDataLayout() const; + /// getFunction - Return the LLVM function that this machine code represents /// const Function *getFunction() const { return Fn; } @@ -155,6 +180,18 @@ public: /// const TargetMachine &getTarget() const { return Target; } + /// getSubtarget - Return the subtarget for which this machine code is being + /// compiled. + const TargetSubtargetInfo &getSubtarget() const { return *STI; } + void setSubtarget(const TargetSubtargetInfo *ST) { STI = ST; } + + /// getSubtarget - This method returns a pointer to the specified type of + /// TargetSubtargetInfo. In debug builds, it verifies that the object being + /// returned is of the correct type. + template const STC &getSubtarget() const { + return *static_cast(STI); + } + /// getRegInfo - Return information about the registers currently in use. /// MachineRegisterInfo &getRegInfo() { return *RegInfo; } @@ -167,7 +204,7 @@ public: MachineFrameInfo *getFrameInfo() { return FrameInfo; } const MachineFrameInfo *getFrameInfo() const { return FrameInfo; } - /// getJumpTableInfo - Return the jump table info object for the current + /// getJumpTableInfo - Return the jump table info object for the current /// function. This object contains information about jump tables in the /// current function. If the current function has no jump tables, this will /// return null. @@ -178,7 +215,6 @@ public: /// does already exist, allocate one. MachineJumpTableInfo *getOrCreateJumpTableInfo(unsigned JTEntryKind); - /// getConstantPool - Return the constant pool object for the current /// function. /// @@ -210,19 +246,24 @@ public: void setExposesReturnsTwice(bool B) { ExposesReturnsTwice = B; } - + + /// Returns true if the function contains any inline assembly. + bool hasInlineAsm() const { + return HasInlineAsm; + } + + /// Set a flag that indicates that the function contains inline assembly. + void setHasInlineAsm(bool B) { + HasInlineAsm = B; + } + /// getInfo - Keep track of various per-function pieces of information for /// backends that would like to do so. /// template Ty *getInfo() { - if (!MFInfo) { - // This should be just `new (Allocator.Allocate()) Ty(*this)', but - // that apparently breaks GCC 3.3. - Ty *Loc = static_cast(Allocator.Allocate(sizeof(Ty), - AlignOf::Alignment)); - MFInfo = new (Loc) Ty(*this); - } + if (!MFInfo) + MFInfo = Ty::template create(Allocator, *this); return static_cast(MFInfo); } @@ -242,21 +283,24 @@ public: return MBBNumbering[N]; } + /// Should we be emitting segmented stack stuff for the function + bool shouldSplitStack(); + /// getNumBlockIDs - Return the number of MBB ID's allocated. /// unsigned getNumBlockIDs() const { return (unsigned)MBBNumbering.size(); } - + /// RenumberBlocks - This discards all of the MachineBasicBlock numbers and /// recomputes them. This guarantees that the MBB numbers are sequential, /// dense, and match the ordering of the blocks within the function. If a /// specific MachineBasicBlock is specified, only that block and those after /// it are renumbered. - void RenumberBlocks(MachineBasicBlock *MBBFrom = 0); - + void RenumberBlocks(MachineBasicBlock *MBBFrom = nullptr); + /// print - Print out the MachineFunction in a format suitable for debugging /// to the specified stream. /// - void print(raw_ostream &OS, SlotIndexes* = 0) const; + void print(raw_ostream &OS, SlotIndexes* = nullptr) const; /// viewCFG - This function is meant for use from the debugger. You can just /// say 'call F->viewCFG()' and a ghostview window should pop up from the @@ -279,7 +323,7 @@ public: /// verify - Run the current MachineFunction through the machine code /// verifier, useful for debugger use. - void verify(Pass *p = NULL, const char *Banner = NULL) const; + void verify(Pass *p = nullptr, const char *Banner = nullptr) const; // Provide accessors for the MachineBasicBlock list... typedef BasicBlockListType::iterator iterator; @@ -330,12 +374,17 @@ public: BasicBlocks.erase(MBBI); } + template + void sort(Comp comp) { + BasicBlocks.sort(comp); + } + //===--------------------------------------------------------------------===// // Internal functions used to automatically number MachineBasicBlocks // - /// getNextMBBNumber - Returns the next unique number to be assigned - /// to a MachineBasicBlock in this MachineFunction. + /// \brief Adds the MBB to the internal numbering. Returns the unique number + /// assigned to the MBB. /// unsigned addToMBBNumbering(MachineBasicBlock *MBB) { MBBNumbering.push_back(MBB); @@ -347,7 +396,7 @@ public: /// implementation. void removeFromMBBNumbering(unsigned N) { assert(N < MBBNumbering.size() && "Illegal basic block #"); - MBBNumbering[N] = 0; + MBBNumbering[N] = nullptr; } /// CreateMachineInstr - Allocate a new MachineInstr. Use this instead @@ -372,7 +421,7 @@ public: /// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this /// instead of `new MachineBasicBlock'. /// - MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = 0); + MachineBasicBlock *CreateMachineBasicBlock(const BasicBlock *bb = nullptr); /// DeleteMachineBasicBlock - Delete the given MachineBasicBlock. /// @@ -384,9 +433,9 @@ public: MachineMemOperand *getMachineMemOperand(MachinePointerInfo PtrInfo, unsigned f, uint64_t s, unsigned base_alignment, - const MDNode *TBAAInfo = 0, - const MDNode *Ranges = 0); - + const AAMDNodes &AAInfo = AAMDNodes(), + const MDNode *Ranges = nullptr); + /// getMachineMemOperand - Allocate a new MachineMemOperand by copying /// an existing one, adjusting by an offset and using the given size. /// MachineMemOperands are owned by the MachineFunction and need not be @@ -394,6 +443,30 @@ public: MachineMemOperand *getMachineMemOperand(const MachineMemOperand *MMO, int64_t Offset, uint64_t Size); + typedef ArrayRecycler::Capacity OperandCapacity; + + /// Allocate an array of MachineOperands. This is only intended for use by + /// internal MachineInstr functions. + MachineOperand *allocateOperandArray(OperandCapacity Cap) { + return OperandRecycler.allocate(Cap, Allocator); + } + + /// Dellocate an array of MachineOperands and recycle the memory. This is + /// only intended for use by internal MachineInstr functions. + /// Cap must be the same capacity that was used to allocate the array. + void deallocateOperandArray(OperandCapacity Cap, MachineOperand *Array) { + OperandRecycler.deallocate(Cap, Array); + } + + /// \brief Allocate and initialize a register mask with @p NumRegister bits. + uint32_t *allocateRegisterMask(unsigned NumRegister) { + unsigned Size = (NumRegister + 31) / 32; + uint32_t *Mask = Allocator.Allocate(Size); + for (unsigned i = 0; i != Size; ++i) + Mask[i] = 0; + return Mask; + } + /// allocateMemRefsArray - Allocate an array to hold MachineMemOperand /// pointers. This array is owned by the MachineFunction. MachineInstr::mmo_iterator allocateMemRefsArray(unsigned long Num); @@ -412,16 +485,19 @@ public: extractStoreMemRefs(MachineInstr::mmo_iterator Begin, MachineInstr::mmo_iterator End); + /// Allocate a string and populate it with the given external symbol name. + const char *createExternalSymbolName(StringRef Name); + //===--------------------------------------------------------------------===// // Label Manipulation. // - + /// getJTISymbol - Return the MCSymbol for the specified non-empty jump table. /// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a /// normal 'L' label is returned. MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx, bool isLinkerPrivate = false) const; - + /// getPICBaseSymbol - Return a function-local symbol to represent the PIC /// base. MCSymbol *getPICBaseSymbol() const;