X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FMachineFunction.h;h=9a253226a1c7cf4d5553f04027d6e23d0d3a9645;hb=767c34a919c850c7f96b663aa4c70846398ec565;hp=dda2dc708769709734a952b9d49473d68f2b5722;hpb=95d594cac3737ae1594a391276942a443cac426b;p=oota-llvm.git diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h index dda2dc70876..9a253226a1c 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; @@ -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; @@ -127,30 +143,55 @@ 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; } + /// getName - Return the name of the corresponding LLVM function. + /// + StringRef getName() const; + /// getFunctionNumber - Return a unique ID for the current function. /// unsigned getFunctionNumber() const { return FunctionNumber; } - + /// getTarget - Return the target machine this machine code is compiled with /// 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; } @@ -189,8 +230,8 @@ public: /// void setAlignment(unsigned A) { Alignment = A; } - /// EnsureAlignment - Make sure the function is at least 1 << A bytes aligned. - void EnsureAlignment(unsigned A) { + /// ensureAlignment - Make sure the function is at least 1 << A bytes aligned. + void ensureAlignment(unsigned A) { if (Alignment < A) Alignment = A; } @@ -206,19 +247,24 @@ 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); } @@ -238,6 +284,9 @@ 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(); } @@ -247,12 +296,12 @@ public: /// 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 @@ -275,7 +324,7 @@ 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; @@ -330,8 +379,8 @@ public: // 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); @@ -343,7 +392,7 @@ 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 @@ -368,7 +417,7 @@ 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. /// @@ -380,8 +429,8 @@ 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. @@ -390,6 +439,30 @@ 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); @@ -408,6 +481,9 @@ 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. //