X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FMachineFunction.h;h=025e18a9dde03502aa2bddc2f385ec95fe56ec1d;hb=53e98a2c4aa7065f4136c5263b14192036c1e056;hp=253c1249c5905329c69b876ca3dccc30fed5b4d5;hpb=589c6f620e8dcf3d59af1ae0e15372c934647c82;p=oota-llvm.git diff --git a/include/llvm/CodeGen/MachineFunction.h b/include/llvm/CodeGen/MachineFunction.h index 253c1249c59..025e18a9dde 100644 --- a/include/llvm/CodeGen/MachineFunction.h +++ b/include/llvm/CodeGen/MachineFunction.h @@ -26,15 +26,19 @@ namespace llvm { -class DILocation; class Value; class Function; +class GCModuleInfo; class MachineRegisterInfo; class MachineFrameInfo; class MachineConstantPool; class MachineJumpTableInfo; +class MachineModuleInfo; +class MCContext; +class Pass; class TargetMachine; class TargetRegisterClass; +struct MachinePointerInfo; template <> struct ilist_traits @@ -68,9 +72,12 @@ struct MachineFunctionInfo { }; class MachineFunction { - Function *Fn; + const Function *Fn; const TargetMachine &Target; - + MCContext &Ctx; + MachineModuleInfo &MMI; + GCModuleInfo *GMI; + // RegInfo - Information about each register in use in the function. MachineRegisterInfo *RegInfo; @@ -105,36 +112,45 @@ class MachineFunction { typedef ilist BasicBlockListType; BasicBlockListType BasicBlocks; - // Default debug location. Used to print out the debug label at the beginning - // of a function. - DebugLoc DefaultDebugLoc; - - // Tracks debug locations. - DebugLocTracker DebugLocInfo; - /// FunctionNumber - This provides a unique ID for each function emitted in /// this translation unit. /// unsigned FunctionNumber; - // The alignment of the function. + /// Alignment - The alignment of the function. unsigned Alignment; - MachineFunction(const MachineFunction &); // intentionally unimplemented - void operator=(const MachineFunction&); // intentionally unimplemented + /// ExposesReturnsTwice - True if the function calls setjmp or related + /// functions with attribute "returns twice", but doesn't have + /// the attribute itself. + /// This is used to limit optimizations which cannot reason + /// about the control flow of such functions. + bool ExposesReturnsTwice; + MachineFunction(const MachineFunction &) LLVM_DELETED_FUNCTION; + void operator=(const MachineFunction&) LLVM_DELETED_FUNCTION; public: - MachineFunction(Function *Fn, const TargetMachine &TM, unsigned FunctionNum); + MachineFunction(const Function *Fn, const TargetMachine &TM, + unsigned FunctionNum, MachineModuleInfo &MMI, + GCModuleInfo* GMI); ~MachineFunction(); + MachineModuleInfo &getMMI() const { return MMI; } + GCModuleInfo *getGMI() const { return GMI; } + MCContext &getContext() const { return Ctx; } + /// getFunction - Return the LLVM function that this machine code represents /// - Function *getFunction() const { return Fn; } + 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; } @@ -177,6 +193,24 @@ public: /// void setAlignment(unsigned A) { Alignment = A; } + /// ensureAlignment - Make sure the function is at least 1 << A bytes aligned. + void ensureAlignment(unsigned A) { + if (Alignment < A) Alignment = A; + } + + /// exposesReturnsTwice - Returns true if the function calls setjmp or + /// any other similar functions with attribute "returns twice" without + /// having the attribute itself. + bool exposesReturnsTwice() const { + return ExposesReturnsTwice; + } + + /// setCallsSetJmp - Set a flag that indicates if there's a call to + /// a "returns twice" function. + void setExposesReturnsTwice(bool B) { + ExposesReturnsTwice = B; + } + /// getInfo - Keep track of various per-function pieces of information for /// backends that would like to do so. /// @@ -222,7 +256,7 @@ public: /// print - Print out the MachineFunction in a format suitable for debugging /// to the specified stream. /// - void print(raw_ostream &OS) const; + void print(raw_ostream &OS, SlotIndexes* = 0) 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 @@ -245,7 +279,7 @@ public: /// verify - Run the current MachineFunction through the machine code /// verifier, useful for debugger use. - void verify(Pass *p=NULL, bool allowDoubleDefs=false) const; + void verify(Pass *p = NULL, const char *Banner = NULL) const; // Provide accessors for the MachineBasicBlock list... typedef BasicBlockListType::iterator iterator; @@ -319,12 +353,12 @@ public: /// CreateMachineInstr - Allocate a new MachineInstr. Use this instead /// of `new MachineInstr'. /// - MachineInstr *CreateMachineInstr(const TargetInstrDesc &TID, + MachineInstr *CreateMachineInstr(const MCInstrDesc &MCID, DebugLoc DL, bool NoImp = false); /// CloneMachineInstr - Create a new MachineInstr which is a copy of the - /// 'Orig' instruction, identical in all ways except the the instruction + /// 'Orig' instruction, identical in all ways except the instruction /// has no parent, prev, or next. /// /// See also TargetInstrInfo::duplicate() for target-specific fixes to cloned @@ -347,10 +381,12 @@ public: /// getMachineMemOperand - Allocate a new MachineMemOperand. /// MachineMemOperands are owned by the MachineFunction and need not be /// explicitly deallocated. - MachineMemOperand *getMachineMemOperand(const Value *v, unsigned f, - int64_t o, uint64_t s, - unsigned base_alignment); - + MachineMemOperand *getMachineMemOperand(MachinePointerInfo PtrInfo, + unsigned f, uint64_t s, + unsigned base_alignment, + const MDNode *TBAAInfo = 0, + const MDNode *Ranges = 0); + /// 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 @@ -386,24 +422,9 @@ public: MCSymbol *getJTISymbol(unsigned JTI, MCContext &Ctx, bool isLinkerPrivate = false) const; - - //===--------------------------------------------------------------------===// - // Debug location. - // - - /// getDILocation - Get the DILocation for a given DebugLoc object. - DILocation getDILocation(DebugLoc DL) const; - - /// getDefaultDebugLoc - Get the default debug location for the machine - /// function. - DebugLoc getDefaultDebugLoc() const { return DefaultDebugLoc; } - - /// setDefaultDebugLoc - Get the default debug location for the machine - /// function. - void setDefaultDebugLoc(DebugLoc DL) { DefaultDebugLoc = DL; } - - /// getDebugLocInfo - Get the debug info location tracker. - DebugLocTracker &getDebugLocInfo() { return DebugLocInfo; } + /// getPICBaseSymbol - Return a function-local symbol to represent the PIC + /// base. + MCSymbol *getPICBaseSymbol() const; }; //===--------------------------------------------------------------------===// @@ -425,6 +446,7 @@ template <> struct GraphTraits : typedef MachineFunction::iterator nodes_iterator; static nodes_iterator nodes_begin(MachineFunction *F) { return F->begin(); } static nodes_iterator nodes_end (MachineFunction *F) { return F->end(); } + static unsigned size (MachineFunction *F) { return F->size(); } }; template <> struct GraphTraits : public GraphTraits { @@ -440,6 +462,9 @@ template <> struct GraphTraits : static nodes_iterator nodes_end (const MachineFunction *F) { return F->end(); } + static unsigned size (const MachineFunction *F) { + return F->size(); + } };