//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_CODEGEN_MEMOPERAND_H
-#define LLVM_CODEGEN_MEMOPERAND_H
+#ifndef LLVM_CODEGEN_MACHINEMEMOPERAND_H
+#define LLVM_CODEGEN_MACHINEMEMOPERAND_H
-#include "llvm/Support/MathExtras.h"
+#include "llvm/System/DataTypes.h"
namespace llvm {
class Value;
+class FoldingSetNodeID;
+class raw_ostream;
//===----------------------------------------------------------------------===//
/// MachineMemOperand - A description of a memory reference used in the backend.
/// The memory access writes data.
MOStore = 2,
/// The memory access is volatile.
- MOVolatile = 4
+ MOVolatile = 4,
+ /// The memory access is non-temporal.
+ MONonTemporal = 8,
+ // This is the number of bits we need to represent flags.
+ MOMaxBits = 4
};
/// MachineMemOperand - Construct an MachineMemOperand object with the
- /// specified address Value, flags, offset, size, and alignment.
+ /// specified address Value, flags, offset, size, and base alignment.
MachineMemOperand(const Value *v, unsigned int f, int64_t o, uint64_t s,
- unsigned int a)
- : Offset(o), Size(s), V(v), Flags((f & 7) | ((Log2_32(a) + 1) << 3)) {}
+ unsigned int base_alignment);
- /// getValue - Return the base address of the memory access.
- /// Special values are PseudoSourceValue::FPRel, PseudoSourceValue::SPRel,
- /// and the other PseudoSourceValue members which indicate references to
- /// frame/stack pointer relative references and other special references.
+ /// 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
+ /// PseudoSourceValue::getFixedStack(int), PseudoSourceValue::getStack, and
+ /// 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 V; }
/// getFlags - Return the raw flags of the source value, \see MemOperandFlags.
- unsigned int getFlags() const { return Flags & 7; }
+ unsigned int getFlags() const { return Flags & ((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
uint64_t getSize() const { return Size; }
/// getAlignment - Return the minimum known alignment in bytes of the
- /// memory reference.
- unsigned int getAlignment() const { return (1u << (Flags >> 3)) >> 1; }
+ /// actual memory reference.
+ uint64_t getAlignment() const;
+
+ /// getBaseAlignment - Return the minimum known alignment in bytes of the
+ /// base address, without the offset.
+ uint64_t getBaseAlignment() const { return (1u << (Flags >> MOMaxBits)) >> 1; }
bool isLoad() const { return Flags & MOLoad; }
bool isStore() const { return Flags & MOStore; }
bool isVolatile() const { return Flags & MOVolatile; }
+ bool isNonTemporal() const { return Flags & MONonTemporal; }
+
+ /// 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.
+ 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.
+ void setValue(const Value *NewSV) { V = NewSV; }
+
+ /// Profile - Gather unique data for the object.
+ ///
+ void Profile(FoldingSetNodeID &ID) const;
};
+raw_ostream &operator<<(raw_ostream &OS, const MachineMemOperand &MRO);
+
} // End llvm namespace
#endif