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LLVM
4.0.0
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A description of a memory reference used in the backend. More...
#include <MachineMemOperand.h>
Public Types | |
| enum | Flags : uint16_t { MONone = 0, MOLoad = 1u << 0, MOStore = 1u << 1, MOVolatile = 1u << 2, MONonTemporal = 1u << 3, MODereferenceable = 1u << 4, MOInvariant = 1u << 5, MOTargetFlag1 = 1u << 6, MOTargetFlag2 = 1u << 7, MOTargetFlag3 = 1u << 8 } |
| Flags values. These may be or'd together. More... | |
Public Member Functions | |
| MachineMemOperand (MachinePointerInfo PtrInfo, Flags flags, uint64_t s, unsigned base_alignment, const AAMDNodes &AAInfo=AAMDNodes(), const MDNode *Ranges=nullptr, SynchronizationScope SynchScope=CrossThread, AtomicOrdering Ordering=AtomicOrdering::NotAtomic, AtomicOrdering FailureOrdering=AtomicOrdering::NotAtomic) | |
| Construct a MachineMemOperand object with the specified PtrInfo, flags, size, and base alignment. More... | |
| const MachinePointerInfo & | getPointerInfo () const |
| const Value * | getValue () const |
| Return the base address of the memory access. More... | |
| const PseudoSourceValue * | getPseudoValue () const |
| const void * | getOpaqueValue () const |
| Flags | getFlags () const |
| Return the raw flags of the source value,. More... | |
| void | setFlags (Flags f) |
| Bitwise OR the current flags with the given flags. More... | |
| int64_t | getOffset () const |
| For normal values, this is a byte offset added to the base address. More... | |
| unsigned | getAddrSpace () const |
| uint64_t | getSize () const |
| Return the size in bytes of the memory reference. More... | |
| uint64_t | getAlignment () const |
| Return the minimum known alignment in bytes of the actual memory reference. More... | |
| uint64_t | getBaseAlignment () const |
| Return the minimum known alignment in bytes of the base address, without the offset. More... | |
| AAMDNodes | getAAInfo () const |
| Return the AA tags for the memory reference. More... | |
| const MDNode * | getRanges () const |
| Return the range tag for the memory reference. More... | |
| SynchronizationScope | getSynchScope () const |
| Return the synchronization scope for this memory operation. More... | |
| AtomicOrdering | getOrdering () const |
| Return the atomic ordering requirements for this memory operation. More... | |
| AtomicOrdering | getFailureOrdering () const |
| For cmpxchg atomic operations, return the atomic ordering requirements when store does not occur. More... | |
| bool | isLoad () const |
| bool | isStore () const |
| bool | isVolatile () const |
| bool | isNonTemporal () const |
| bool | isDereferenceable () const |
| bool | isInvariant () const |
| bool | isAtomic () const |
| Returns true if this operation has an atomic ordering requirement of unordered or higher, false otherwise. More... | |
| bool | isUnordered () const |
| Returns true if this memory operation doesn't have any ordering constraints other than normal aliasing. More... | |
| void | refineAlignment (const MachineMemOperand *MMO) |
| Update this MachineMemOperand to reflect the alignment of MMO, if it has a greater alignment. More... | |
| void | setValue (const Value *NewSV) |
| Change the SourceValue for this MachineMemOperand. More... | |
| void | setValue (const PseudoSourceValue *NewSV) |
| void | setOffset (int64_t NewOffset) |
| void | Profile (FoldingSetNodeID &ID) const |
| Profile - Gather unique data for the object. More... | |
| void | print (raw_ostream &OS) const |
| Support for operator<<. More... | |
| void | print (raw_ostream &OS, ModuleSlotTracker &MST) const |
Friends | |
| bool | operator== (const MachineMemOperand &LHS, const MachineMemOperand &RHS) |
| bool | operator!= (const MachineMemOperand &LHS, const MachineMemOperand &RHS) |
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 objects can be used to represent loads and stores to memory locations that aren't explicit in the regular LLVM IR.
Definition at line 92 of file MachineMemOperand.h.
| enum llvm::MachineMemOperand::Flags : uint16_t |
Flags values. These may be or'd together.
Definition at line 95 of file MachineMemOperand.h.
| MachineMemOperand::MachineMemOperand | ( | MachinePointerInfo | PtrInfo, |
| Flags | flags, | ||
| uint64_t | s, | ||
| unsigned | base_alignment, | ||
| const AAMDNodes & | AAInfo = AAMDNodes(), |
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| const MDNode * | Ranges = nullptr, |
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| SynchronizationScope | SynchScope = CrossThread, |
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| AtomicOrdering | Ordering = AtomicOrdering::NotAtomic, |
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| AtomicOrdering | FailureOrdering = AtomicOrdering::NotAtomic |
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| ) |
Construct a MachineMemOperand object with the specified PtrInfo, flags, size, and base alignment.
For atomic operations the synchronization scope and atomic ordering requirements must also be specified. For cmpxchg atomic operations the atomic ordering requirements when store does not occur must also be specified.
Definition at line 543 of file MachineInstr.cpp.
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Return the AA tags for the memory reference.
Definition at line 195 of file MachineMemOperand.h.
Referenced by llvm::SIInstrInfo::areMemAccessesTriviallyDisjoint(), llvm::MemSDNode::getAAInfo(), MIsNeedChainEdge(), and llvm::MIPrinter::print().
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Definition at line 181 of file MachineMemOperand.h.
| uint64_t MachineMemOperand::getAlignment | ( | ) | const |
Return the minimum known alignment in bytes of the actual memory reference.
getAlignment - Return the minimum known alignment in bytes of the actual memory reference.
Definition at line 593 of file MachineInstr.cpp.
Referenced by llvm::MemSDNode::getAlignment(), isMemoryOp(), llvm::X86InstrInfo::loadRegFromAddr(), and llvm::X86InstrInfo::storeRegToAddr().
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Return the minimum known alignment in bytes of the base address, without the offset.
Definition at line 192 of file MachineMemOperand.h.
Referenced by llvm::MachineFunction::getMachineMemOperand(), llvm::MemSDNode::getOriginalAlignment(), and llvm::MIPrinter::print().
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For cmpxchg atomic operations, return the atomic ordering requirements when store does not occur.
Definition at line 214 of file MachineMemOperand.h.
Referenced by llvm::AtomicSDNode::getFailureOrdering(), and llvm::MachineFunction::getMachineMemOperand().
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Return the raw flags of the source value,.
Definition at line 172 of file MachineMemOperand.h.
Referenced by combineLoad(), combineStore(), EltsFromConsecutiveLoads(), llvm::TargetLowering::expandUnalignedLoad(), llvm::TargetLowering::expandUnalignedStore(), llvm::SelectionDAG::getIndexedLoad(), llvm::MachineFunction::getMachineMemOperand(), lowerFP_TO_SINT_STORE(), llvm::HexagonTargetLowering::LowerLOAD(), LowerSTORE(), llvm::PPCTargetLowering::PerformDAGCombine(), performIntToFpCombine(), PerformSTORECombine(), PerformVMOVRRDCombine(), reduceMaskedLoadToScalarLoad(), reduceMaskedStoreToScalarStore(), llvm::SparcTargetLowering::ReplaceNodeResults(), llvm::TargetLowering::scalarizeVectorLoad(), llvm::TargetLowering::scalarizeVectorStore(), SkipLoadExtensionForVMULL(), splitStores(), splitStoreSplat(), llvm::AMDGPUTargetLowering::SplitVectorLoad(), and llvm::AMDGPUTargetLowering::SplitVectorStore().
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For normal values, this is a byte offset added to the base address.
For PseudoSourceValue::FPRel values, this is the FrameIndex number.
Definition at line 179 of file MachineMemOperand.h.
Referenced by llvm::SystemZInstrInfo::areMemAccessesTriviallyDisjoint(), llvm::PPCHazardRecognizer970::EmitInstruction(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MachineFunction::getMachineMemOperand(), llvm::MemSDNode::getSrcValueOffset(), MIsNeedChainEdge(), and llvm::MIPrinter::print().
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Definition at line 169 of file MachineMemOperand.h.
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Return the atomic ordering requirements for this memory operation.
For cmpxchg atomic operations, return the atomic ordering requirements when store occurs.
Definition at line 208 of file MachineMemOperand.h.
Referenced by llvm::MachineFunction::getMachineMemOperand(), llvm::MemSDNode::getOrdering(), and isAtomic().
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Definition at line 154 of file MachineMemOperand.h.
Referenced by llvm::SelectionDAG::getAtomic(), llvm::SelectionDAG::getLoad(), llvm::SelectionDAG::getMaskedGather(), llvm::SelectionDAG::getMaskedLoad(), llvm::SelectionDAG::getMaskedScatter(), llvm::SelectionDAG::getMaskedStore(), llvm::SelectionDAG::getMemIntrinsicNode(), llvm::MemSDNode::getPointerInfo(), llvm::SelectionDAG::getStore(), llvm::SelectionDAG::getTargetMemSDNode(), llvm::SelectionDAG::getTruncStore(), llvm::AMDGPUTargetLowering::SplitVectorLoad(), and llvm::AMDGPUTargetLowering::SplitVectorStore().
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Definition at line 165 of file MachineMemOperand.h.
Referenced by llvm::SystemZInstrInfo::areMemAccessesTriviallyDisjoint(), llvm::MachineFunction::getMachineMemOperand(), and llvm::MIPrinter::print().
Return the range tag for the memory reference.
Definition at line 198 of file MachineMemOperand.h.
Referenced by llvm::MemSDNode::getRanges(), and llvm::MIPrinter::print().
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Return the size in bytes of the memory reference.
Definition at line 184 of file MachineMemOperand.h.
Referenced by llvm::SIInstrInfo::areMemAccessesTriviallyDisjoint(), llvm::SystemZInstrInfo::areMemAccessesTriviallyDisjoint(), emitComments(), llvm::PPCHazardRecognizer970::EmitInstruction(), llvm::PPCTargetLowering::expandVSXLoadForLE(), llvm::PPCTargetLowering::expandVSXStoreForLE(), llvm::MachineFunction::extractLoadMemRefs(), llvm::MachineFunction::extractStoreMemRefs(), llvm::SystemZInstrInfo::foldMemoryOperandImpl(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MemSDNode::MemSDNode(), MIsNeedChainEdge(), and llvm::MIPrinter::print().
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Return the synchronization scope for this memory operation.
Definition at line 201 of file MachineMemOperand.h.
Referenced by llvm::MachineFunction::getMachineMemOperand(), and llvm::MemSDNode::getSynchScope().
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.
Definition at line 163 of file MachineMemOperand.h.
Referenced by llvm::SIInstrInfo::areMemAccessesTriviallyDisjoint(), llvm::SystemZInstrInfo::areMemAccessesTriviallyDisjoint(), canLowerToLDG(), llvm::PPCHazardRecognizer970::EmitInstruction(), getCodeAddrSpace(), llvm::PPCHazardRecognizer970::getHazardType(), llvm::MachineFunction::getMachineMemOperand(), getUnderlyingObjects(), llvm::SITargetLowering::isMemOpHasNoClobberedMemOperand(), llvm::SITargetLowering::isMemOpUniform(), llvm::AVR::isProgramMemoryAccess(), MIsNeedChainEdge(), and llvm::MIPrinter::print().
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Returns true if this operation has an atomic ordering requirement of unordered or higher, false otherwise.
Definition at line 227 of file MachineMemOperand.h.
References getOrdering(), and llvm::NotAtomic.
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Definition at line 222 of file MachineMemOperand.h.
References MODereferenceable.
Referenced by llvm::MemSDNode::MemSDNode(), and llvm::MIPrinter::print().
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Definition at line 223 of file MachineMemOperand.h.
References MOInvariant.
Referenced by llvm::MemSDNode::MemSDNode(), and llvm::MIPrinter::print().
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Definition at line 218 of file MachineMemOperand.h.
References MOLoad.
Referenced by llvm::MIPrinter::print(), and llvm::MemSDNode::readMem().
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Definition at line 221 of file MachineMemOperand.h.
References MONonTemporal.
Referenced by llvm::MemSDNode::MemSDNode(), and llvm::MIPrinter::print().
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Definition at line 219 of file MachineMemOperand.h.
References MOStore.
Referenced by llvm::MIPrinter::print(), and llvm::MemSDNode::writeMem().
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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.
Definition at line 236 of file MachineMemOperand.h.
References isVolatile().
Referenced by llvm::MachineInstr::hasOrderedMemoryRef().
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Definition at line 220 of file MachineMemOperand.h.
References MOVolatile.
Referenced by llvm::SystemZInstrInfo::foldMemoryOperandImpl(), INITIALIZE_PASS(), isMemoryOp(), isUnordered(), llvm::MemSDNode::MemSDNode(), and llvm::MIPrinter::print().
| void MachineMemOperand::print | ( | raw_ostream & | OS | ) | const |
Support for operator<<.
Definition at line 597 of file MachineInstr.cpp.
Referenced by llvm::operator<<().
| void MachineMemOperand::print | ( | raw_ostream & | OS, |
| ModuleSlotTracker & | MST | ||
| ) | const |
Definition at line 601 of file MachineInstr.cpp.
| void MachineMemOperand::Profile | ( | FoldingSetNodeID & | ID | ) | const |
Profile - Gather unique data for the object.
Definition at line 568 of file MachineInstr.cpp.
| void MachineMemOperand::refineAlignment | ( | const MachineMemOperand * | MMO | ) |
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.
Definition at line 576 of file MachineInstr.cpp.
Referenced by llvm::MemSDNode::refineAlignment().
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Bitwise OR the current flags with the given flags.
Definition at line 175 of file MachineMemOperand.h.
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Definition at line 248 of file MachineMemOperand.h.
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.
Definition at line 246 of file MachineMemOperand.h.
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Definition at line 247 of file MachineMemOperand.h.
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Definition at line 273 of file MachineMemOperand.h.
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Definition at line 260 of file MachineMemOperand.h.
1.8.6