X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FMachineMemOperand.h;h=a73b92f9a2526e76b33c4250b20bc30b6fcf2c55;hb=01b5d5b27f4d142c9c79c675b052deca0760b111;hp=0804f46ae92cd32574f0011dfb529d120a5919a3;hpb=93a95ae8a9d8eb19dc0d90281473be2fb1c05a17;p=oota-llvm.git diff --git a/include/llvm/CodeGen/MachineMemOperand.h b/include/llvm/CodeGen/MachineMemOperand.h index 0804f46ae92..a73b92f9a25 100644 --- a/include/llvm/CodeGen/MachineMemOperand.h +++ b/include/llvm/CodeGen/MachineMemOperand.h @@ -16,13 +16,18 @@ #ifndef LLVM_CODEGEN_MACHINEMEMOPERAND_H #define LLVM_CODEGEN_MACHINEMEMOPERAND_H -#include "llvm/System/DataTypes.h" +#include "llvm/ADT/PointerUnion.h" +#include "llvm/CodeGen/PseudoSourceValue.h" +#include "llvm/IR/Metadata.h" +#include "llvm/IR/Value.h" // PointerLikeTypeTraits +#include "llvm/Support/DataTypes.h" namespace llvm { -class Value; class FoldingSetNodeID; +class MDNode; class raw_ostream; +class ModuleSlotTracker; /// MachinePointerInfo - This class contains a discriminated union of /// information about pointers in memory operands, relating them back to LLVM IR @@ -32,16 +37,50 @@ struct MachinePointerInfo { /// V - This is the IR pointer value for the access, or it is null if unknown. /// If this is null, then the access is to a pointer in the default address /// space. - const Value *V; - + PointerUnion V; + /// Offset - This is an offset from the base Value*. int64_t Offset; - - explicit MachinePointerInfo(const Value *v, int64_t offset = 0) + + explicit MachinePointerInfo(const Value *v = nullptr, int64_t offset = 0) + : V(v), Offset(offset) {} + + explicit MachinePointerInfo(const PseudoSourceValue *v, + int64_t offset = 0) : V(v), Offset(offset) {} + + MachinePointerInfo getWithOffset(int64_t O) const { + if (V.isNull()) return MachinePointerInfo(); + if (V.is()) + return MachinePointerInfo(V.get(), Offset+O); + return MachinePointerInfo(V.get(), Offset+O); + } + + /// getAddrSpace - Return the LLVM IR address space number that this pointer + /// points into. + unsigned getAddrSpace() const; + + /// getConstantPool - Return a MachinePointerInfo record that refers to the + /// constant pool. + static MachinePointerInfo getConstantPool(); + + /// getFixedStack - Return a MachinePointerInfo record that refers to the + /// the specified FrameIndex. + static MachinePointerInfo getFixedStack(int FI, int64_t offset = 0); + + /// getJumpTable - Return a MachinePointerInfo record that refers to a + /// jump table entry. + static MachinePointerInfo getJumpTable(); + + /// getGOT - Return a MachinePointerInfo record that refers to a + /// GOT entry. + static MachinePointerInfo getGOT(); + + /// getStack - stack pointer relative access. + static MachinePointerInfo getStack(int64_t Offset); }; - - + + //===----------------------------------------------------------------------===// /// MachineMemOperand - A description of a memory reference used in the backend. /// Instead of holding a StoreInst or LoadInst, this class holds the address @@ -54,6 +93,8 @@ class MachineMemOperand { MachinePointerInfo PtrInfo; uint64_t Size; unsigned Flags; + AAMDNodes AAInfo; + const MDNode *Ranges; public: /// Flags values. These may be or'd together. @@ -66,17 +107,24 @@ public: MOVolatile = 4, /// The memory access is non-temporal. MONonTemporal = 8, + /// The memory access is invariant. + MOInvariant = 16, + // Target hints allow target passes to annotate memory operations. + MOTargetStartBit = 5, + MOTargetNumBits = 3, // This is the number of bits we need to represent flags. - MOMaxBits = 4 + MOMaxBits = 8 }; /// MachineMemOperand - Construct an MachineMemOperand object with the /// specified PtrInfo, flags, size, and base alignment. MachineMemOperand(MachinePointerInfo PtrInfo, unsigned flags, uint64_t s, - unsigned base_alignment); + unsigned base_alignment, + const AAMDNodes &AAInfo = AAMDNodes(), + const MDNode *Ranges = nullptr); const MachinePointerInfo &getPointerInfo() const { return PtrInfo; } - + /// getValue - Return the base address of the memory access. This may either /// be a normal LLVM IR Value, or one of the special values used in CodeGen. /// Special values are those obtained via @@ -84,16 +132,27 @@ public: /// other PseudoSourceValue member functions which return objects which stand /// for frame/stack pointer relative references and other special references /// which are not representable in the high-level IR. - const Value *getValue() const { return PtrInfo.V; } + const Value *getValue() const { return PtrInfo.V.dyn_cast(); } + + const PseudoSourceValue *getPseudoValue() const { + return PtrInfo.V.dyn_cast(); + } + + const void *getOpaqueValue() const { return PtrInfo.V.getOpaqueValue(); } /// getFlags - Return the raw flags of the source value, \see MemOperandFlags. unsigned int getFlags() const { return Flags & ((1 << MOMaxBits) - 1); } + /// Bitwise OR the current flags with the given flags. + void setFlags(unsigned f) { Flags |= (f & ((1 << MOMaxBits) - 1)); } + /// getOffset - For normal values, this is a byte offset added to the base /// address. For PseudoSourceValue::FPRel values, this is the FrameIndex /// number. int64_t getOffset() const { return PtrInfo.Offset; } + unsigned getAddrSpace() const { return PtrInfo.getAddrSpace(); } + /// getSize - Return the size in bytes of the memory reference. uint64_t getSize() const { return Size; } @@ -105,10 +164,26 @@ public: /// base address, without the offset. uint64_t getBaseAlignment() const { return (1u << (Flags >> MOMaxBits)) >> 1; } + /// getAAInfo - Return the AA tags for the memory reference. + AAMDNodes getAAInfo() const { return AAInfo; } + + /// getRanges - Return the range tag for the memory reference. + const MDNode *getRanges() const { return Ranges; } + bool isLoad() const { return Flags & MOLoad; } bool isStore() const { return Flags & MOStore; } bool isVolatile() const { return Flags & MOVolatile; } bool isNonTemporal() const { return Flags & MONonTemporal; } + bool isInvariant() const { return Flags & MOInvariant; } + + /// isUnordered - Returns true if this memory operation doesn't have any + /// ordering constraints other than normal aliasing. Volatile and atomic + /// memory operations can't be reordered. + /// + /// Currently, we don't model the difference between volatile and atomic + /// operations. They should retain their ordering relative to all memory + /// operations. + bool isUnordered() const { return !isVolatile(); } /// refineAlignment - Update this MachineMemOperand to reflect the alignment /// of MMO, if it has a greater alignment. This must only be used when the @@ -119,14 +194,42 @@ public: /// should only be used when an object is being relocated and all references /// to it are being updated. void setValue(const Value *NewSV) { PtrInfo.V = NewSV; } + void setValue(const PseudoSourceValue *NewSV) { PtrInfo.V = NewSV; } void setOffset(int64_t NewOffset) { PtrInfo.Offset = NewOffset; } /// Profile - Gather unique data for the object. /// void Profile(FoldingSetNodeID &ID) const; + + /// Support for operator<<. + /// @{ + void print(raw_ostream &OS) const; + void print(raw_ostream &OS, ModuleSlotTracker &MST) const; + /// @} + + friend bool operator==(const MachineMemOperand &LHS, + const MachineMemOperand &RHS) { + return LHS.getValue() == RHS.getValue() && + LHS.getPseudoValue() == RHS.getPseudoValue() && + LHS.getSize() == RHS.getSize() && + LHS.getOffset() == RHS.getOffset() && + LHS.getFlags() == RHS.getFlags() && + LHS.getAAInfo() == RHS.getAAInfo() && + LHS.getRanges() == RHS.getRanges() && + LHS.getAlignment() == RHS.getAlignment() && + LHS.getAddrSpace() == RHS.getAddrSpace(); + } + + friend bool operator!=(const MachineMemOperand &LHS, + const MachineMemOperand &RHS) { + return !(LHS == RHS); + } }; -raw_ostream &operator<<(raw_ostream &OS, const MachineMemOperand &MRO); +inline raw_ostream &operator<<(raw_ostream &OS, const MachineMemOperand &MRO) { + MRO.print(OS); + return OS; +} } // End llvm namespace