fix documentation comments; NFC

llvm-svn: 269225
This commit is contained in:
Sanjay Patel 2016-05-11 20:10:33 +00:00
parent 3cb7504d30
commit c610da6174
1 changed files with 35 additions and 41 deletions

View File

@ -30,12 +30,11 @@ class raw_ostream;
class MachineFunction;
class ModuleSlotTracker;
/// MachinePointerInfo - This class contains a discriminated union of
/// information about pointers in memory operands, relating them back to LLVM IR
/// or to virtual locations (such as frame indices) that are exposed during
/// codegen.
/// This class contains a discriminated union of information about pointers in
/// memory operands, relating them back to LLVM IR or to virtual locations (such
/// as frame indices) that are exposed during codegen.
struct MachinePointerInfo {
/// V - This is the IR pointer value for the access, or it is null if unknown.
/// 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.
PointerUnion<const Value *, const PseudoSourceValue *> V;
@ -57,34 +56,30 @@ struct MachinePointerInfo {
return MachinePointerInfo(V.get<const PseudoSourceValue*>(), Offset+O);
}
/// getAddrSpace - Return the LLVM IR address space number that this pointer
/// points into.
/// 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.
/// Return a MachinePointerInfo record that refers to the constant pool.
static MachinePointerInfo getConstantPool(MachineFunction &MF);
/// getFixedStack - Return a MachinePointerInfo record that refers to the
/// the specified FrameIndex.
/// Return a MachinePointerInfo record that refers to the specified
/// FrameIndex.
static MachinePointerInfo getFixedStack(MachineFunction &MF, int FI,
int64_t Offset = 0);
/// getJumpTable - Return a MachinePointerInfo record that refers to a
/// jump table entry.
/// Return a MachinePointerInfo record that refers to a jump table entry.
static MachinePointerInfo getJumpTable(MachineFunction &MF);
/// getGOT - Return a MachinePointerInfo record that refers to a
/// GOT entry.
/// Return a MachinePointerInfo record that refers to a GOT entry.
static MachinePointerInfo getGOT(MachineFunction &MF);
/// getStack - stack pointer relative access.
/// Stack pointer relative access.
static MachinePointerInfo getStack(MachineFunction &MF, int64_t Offset);
};
//===----------------------------------------------------------------------===//
/// MachineMemOperand - A description of a memory reference used in the backend.
/// A description of a memory reference used in the backend.
/// Instead of holding a StoreInst or LoadInst, this class holds the address
/// Value of the reference along with a byte size and offset. This allows it
/// to describe lowered loads and stores. Also, the special PseudoSourceValue
@ -118,8 +113,8 @@ public:
MOMaxBits = 8
};
/// MachineMemOperand - Construct an MachineMemOperand object with the
/// specified PtrInfo, flags, size, and base alignment.
/// Construct a MachineMemOperand object with the specified PtrInfo, flags,
/// size, and base alignment.
MachineMemOperand(MachinePointerInfo PtrInfo, unsigned flags, uint64_t s,
unsigned base_alignment,
const AAMDNodes &AAInfo = AAMDNodes(),
@ -127,8 +122,8 @@ public:
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.
/// 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
/// PseudoSourceValue::getFixedStack(int), PseudoSourceValue::getStack, and
/// other PseudoSourceValue member functions which return objects which stand
@ -142,34 +137,33 @@ public:
const void *getOpaqueValue() const { return PtrInfo.V.getOpaqueValue(); }
/// getFlags - Return the raw flags of the source value, \see MemOperandFlags.
/// 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.
/// 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.
/// Return the size in bytes of the memory reference.
uint64_t getSize() const { return Size; }
/// getAlignment - Return the minimum known alignment in bytes of the
/// actual memory reference.
/// Return the minimum known alignment in bytes of the actual memory
/// reference.
uint64_t getAlignment() const;
/// getBaseAlignment - Return the minimum known alignment in bytes of the
/// base address, without the offset.
/// Return the minimum known alignment in bytes of the base address, without
/// the offset.
uint64_t getBaseAlignment() const { return (1u << (Flags >> MOMaxBits)) >> 1; }
/// getAAInfo - Return the AA tags for the memory reference.
/// Return the AA tags for the memory reference.
AAMDNodes getAAInfo() const { return AAInfo; }
/// getRanges - Return the range tag for the memory reference.
/// Return the range tag for the memory reference.
const MDNode *getRanges() const { return Ranges; }
bool isLoad() const { return Flags & MOLoad; }
@ -178,23 +172,23 @@ public:
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.
/// 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
/// new alignment applies to all users of this MachineMemOperand.
/// Update this MachineMemOperand to reflect the alignment of MMO, if it has a
/// greater alignment. This must only be used when the new alignment applies
/// to all users of this MachineMemOperand.
void refineAlignment(const MachineMemOperand *MMO);
/// setValue - Change the SourceValue for this MachineMemOperand. This
/// should only be used when an object is being relocated and all references
/// to it are being updated.
/// Change the SourceValue for this MachineMemOperand. This 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; }