Represents a G_MERGE_VALUES. More...
#include "llvm/CodeGen/GlobalISel/GenericMachineInstrs.h"
Inheritance diagram for llvm::GMerge:
Static Public Member Functions | |
| static bool | classof (const MachineInstr *MI) |
 Static Public Member Functions inherited from llvm::GMergeLikeInstr | |
| static bool | classof (const MachineInstr *MI) |
| Static Public Member Functions inherited from llvm::GenericMachineInstr | |
| static bool | classof (const MachineInstr *MI) |
| Static Public Member Functions inherited from llvm::MachineInstr | |
| template<typename Operand , typename Instruction > | |
| static iterator_range< filter_iterator< Operand *, std::function< bool(Operand &Op)> > > | getDebugOperandsForReg (Instruction *MI, Register Reg) |
Returns a range of all of the operands that correspond to a debug use of Reg. | |
| static uint32_t | copyFlagsFromInstruction (const Instruction &I) |
Additional Inherited Members | |
| Public Types inherited from llvm::MachineInstr | |
| enum | CommentFlag { ReloadReuse = 0x1 , NoSchedComment = 0x2 , TAsmComments = 0x4 } |
| Flags to specify different kinds of comments to output in assembly code. More... | |
| enum | MIFlag { NoFlags = 0 , FrameSetup = 1 << 0 , FrameDestroy = 1 << 1 , BundledPred = 1 << 2 , BundledSucc = 1 << 3 , FmNoNans = 1 << 4 , FmNoInfs = 1 << 5 , FmNsz = 1 << 6 , FmArcp = 1 << 7 , FmContract = 1 << 8 , FmAfn = 1 << 9 , FmReassoc = 1 << 10 , NoUWrap = 1 << 11 , NoSWrap = 1 << 12 , IsExact = 1 << 13 , NoFPExcept = 1 << 14 , NoMerge = 1 << 15 , Unpredictable = 1 << 16 , NoConvergent = 1 << 17 , NonNeg = 1 << 18 , Disjoint = 1 << 19 , NoUSWrap = 1 << 20 , SameSign = 1 << 21 } |
| enum | QueryType { IgnoreBundle , AnyInBundle , AllInBundle } |
| API for querying MachineInstr properties. More... | |
| enum | MICheckType { CheckDefs , CheckKillDead , IgnoreDefs , IgnoreVRegDefs } |
| using | mmo_iterator = ArrayRef< MachineMemOperand * >::iterator |
| using | mop_iterator = MachineOperand * |
| iterator/begin/end - Iterate over all operands of a machine instruction. | |
| using | const_mop_iterator = const MachineOperand * |
| using | filtered_mop_iterator = filter_iterator< mop_iterator, bool(*)(const MachineOperand &)> |
| using | filtered_const_mop_iterator = filter_iterator< const_mop_iterator, bool(*)(const MachineOperand &)> |
| Public Member Functions inherited from llvm::GMergeLikeInstr | |
| unsigned | getNumSources () const |
| Returns the number of source registers. | |
| Register | getSourceReg (unsigned I) const |
| Returns the I'th source register. | |
| Public Member Functions inherited from llvm::GenericMachineInstr | |
| GenericMachineInstr ()=delete | |
| Register | getReg (unsigned Idx) const |
| Access the Idx'th operand as a register and return it. | |
| bool | hasPoisonGeneratingFlags () const |
| void | dropPoisonGeneratingFlags () |
| Public Member Functions inherited from llvm::MachineInstr | |
| MachineInstr (const MachineInstr &)=delete | |
| MachineInstr & | operator= (const MachineInstr &)=delete |
| ~MachineInstr ()=delete | |
| const MachineBasicBlock * | getParent () const |
| MachineBasicBlock * | getParent () |
| void | moveBefore (MachineInstr *MovePos) |
Move the instruction before MovePos. | |
| const MachineFunction * | getMF () const |
| Return the function that contains the basic block that this instruction belongs to. | |
| MachineFunction * | getMF () |
| uint8_t | getAsmPrinterFlags () const |
| Return the asm printer flags bitvector. | |
| void | clearAsmPrinterFlags () |
| Clear the AsmPrinter bitvector. | |
| bool | getAsmPrinterFlag (CommentFlag Flag) const |
| Return whether an AsmPrinter flag is set. | |
| void | setAsmPrinterFlag (uint8_t Flag) |
| Set a flag for the AsmPrinter. | |
| void | clearAsmPrinterFlag (CommentFlag Flag) |
| Clear specific AsmPrinter flags. | |
| uint32_t | getFlags () const |
| Return the MI flags bitvector. | |
| bool | getFlag (MIFlag Flag) const |
| Return whether an MI flag is set. | |
| void | setFlag (MIFlag Flag) |
| Set a MI flag. | |
| void | setFlags (unsigned flags) |
| void | clearFlag (MIFlag Flag) |
| clearFlag - Clear a MI flag. | |
| void | clearFlags (unsigned flags) |
| bool | isInsideBundle () const |
| Return true if MI is in a bundle (but not the first MI in a bundle). | |
| bool | isBundled () const |
| Return true if this instruction part of a bundle. | |
| bool | isBundledWithPred () const |
| Return true if this instruction is part of a bundle, and it is not the first instruction in the bundle. | |
| bool | isBundledWithSucc () const |
| Return true if this instruction is part of a bundle, and it is not the last instruction in the bundle. | |
| void | bundleWithPred () |
| Bundle this instruction with its predecessor. | |
| void | bundleWithSucc () |
| Bundle this instruction with its successor. | |
| void | unbundleFromPred () |
| Break bundle above this instruction. | |
| void | unbundleFromSucc () |
| Break bundle below this instruction. | |
| const DebugLoc & | getDebugLoc () const |
| Returns the debug location id of this MachineInstr. | |
| const MachineOperand & | getDebugOffset () const |
| Return the operand containing the offset to be used if this DBG_VALUE instruction is indirect; will be an invalid register if this value is not indirect, and an immediate with value 0 otherwise. | |
| MachineOperand & | getDebugOffset () |
| const MachineOperand & | getDebugVariableOp () const |
| Return the operand for the debug variable referenced by this DBG_VALUE instruction. | |
| MachineOperand & | getDebugVariableOp () |
| const DILocalVariable * | getDebugVariable () const |
| Return the debug variable referenced by this DBG_VALUE instruction. | |
| const MachineOperand & | getDebugExpressionOp () const |
| Return the operand for the complex address expression referenced by this DBG_VALUE instruction. | |
| MachineOperand & | getDebugExpressionOp () |
| const DIExpression * | getDebugExpression () const |
| Return the complex address expression referenced by this DBG_VALUE instruction. | |
| const DILabel * | getDebugLabel () const |
| Return the debug label referenced by this DBG_LABEL instruction. | |
| unsigned | getDebugInstrNum () |
| Fetch the instruction number of this MachineInstr. | |
| unsigned | getDebugInstrNum (MachineFunction &MF) |
Fetch instruction number of this MachineInstr – but before it's inserted into MF. | |
| unsigned | peekDebugInstrNum () const |
| Examine the instruction number of this MachineInstr. | |
| void | setDebugInstrNum (unsigned Num) |
| Set instruction number of this MachineInstr. | |
| void | dropDebugNumber () |
| Drop any variable location debugging information associated with this instruction. | |
| const MDNode * | getLocCookieMD () const |
| For inline asm, get the !srcloc metadata node if we have it, and decode the loc cookie from it. | |
| void | emitInlineAsmError (const Twine &ErrMsg) const |
| Emit an error referring to the source location of this instruction. | |
| void | emitGenericError (const Twine &ErrMsg) const |
| const MCInstrDesc & | getDesc () const |
| Returns the target instruction descriptor of this MachineInstr. | |
| unsigned | getOpcode () const |
| Returns the opcode of this MachineInstr. | |
| unsigned | getNumOperands () const |
| Retuns the total number of operands. | |
| unsigned | getNumDebugOperands () const |
| Returns the total number of operands which are debug locations. | |
| const MachineOperand & | getOperand (unsigned i) const |
| MachineOperand & | getOperand (unsigned i) |
| MachineOperand & | getDebugOperand (unsigned Index) |
| const MachineOperand & | getDebugOperand (unsigned Index) const |
| bool | hasDebugOperandForReg (Register Reg) const |
Returns whether this debug value has at least one debug operand with the register Reg. | |
| iterator_range< filter_iterator< const MachineOperand *, std::function< bool(const MachineOperand &Op)> > > | getDebugOperandsForReg (Register Reg) const |
| iterator_range< filter_iterator< MachineOperand *, std::function< bool(MachineOperand &Op)> > > | getDebugOperandsForReg (Register Reg) |
| bool | isDebugOperand (const MachineOperand *Op) const |
| unsigned | getDebugOperandIndex (const MachineOperand *Op) const |
| unsigned | getNumDefs () const |
| Returns the total number of definitions. | |
| bool | hasImplicitDef () const |
| Returns true if the instruction has implicit definition. | |
| unsigned | getNumImplicitOperands () const |
| Returns the implicit operands number. | |
| bool | isOperandSubregIdx (unsigned OpIdx) const |
Return true if operand OpIdx is a subregister index. | |
| unsigned | getNumExplicitOperands () const |
| Returns the number of non-implicit operands. | |
| unsigned | getNumExplicitDefs () const |
| Returns the number of non-implicit definitions. | |
| mop_iterator | operands_begin () |
| mop_iterator | operands_end () |
| const_mop_iterator | operands_begin () const |
| const_mop_iterator | operands_end () const |
| iterator_range< mop_iterator > | operands () |
| iterator_range< const_mop_iterator > | operands () const |
| iterator_range< mop_iterator > | explicit_operands () |
| iterator_range< const_mop_iterator > | explicit_operands () const |
| iterator_range< mop_iterator > | implicit_operands () |
| iterator_range< const_mop_iterator > | implicit_operands () const |
| iterator_range< mop_iterator > | debug_operands () |
| Returns a range over all operands that are used to determine the variable location for this DBG_VALUE instruction. | |
| iterator_range< const_mop_iterator > | debug_operands () const |
| Returns a range over all operands that are used to determine the variable location for this DBG_VALUE instruction. | |
| iterator_range< mop_iterator > | defs () |
| Returns a range over all explicit operands that are register definitions. | |
| iterator_range< const_mop_iterator > | defs () const |
| Returns a range over all explicit operands that are register definitions. | |
| iterator_range< mop_iterator > | uses () |
| Returns a range that includes all operands which may be register uses. | |
| iterator_range< const_mop_iterator > | uses () const |
| Returns a range that includes all operands which may be register uses. | |
| iterator_range< mop_iterator > | explicit_uses () |
| iterator_range< const_mop_iterator > | explicit_uses () const |
| iterator_range< filtered_mop_iterator > | all_defs () |
| Returns an iterator range over all operands that are (explicit or implicit) register defs. | |
| iterator_range< filtered_const_mop_iterator > | all_defs () const |
| Returns an iterator range over all operands that are (explicit or implicit) register defs. | |
| iterator_range< filtered_mop_iterator > | all_uses () |
| Returns an iterator range over all operands that are (explicit or implicit) register uses. | |
| iterator_range< filtered_const_mop_iterator > | all_uses () const |
| Returns an iterator range over all operands that are (explicit or implicit) register uses. | |
| unsigned | getOperandNo (const_mop_iterator I) const |
Returns the number of the operand iterator I points to. | |
| ArrayRef< MachineMemOperand * > | memoperands () const |
| Access to memory operands of the instruction. | |
| mmo_iterator | memoperands_begin () const |
| Access to memory operands of the instruction. | |
| mmo_iterator | memoperands_end () const |
| Access to memory operands of the instruction. | |
| bool | memoperands_empty () const |
| Return true if we don't have any memory operands which described the memory access done by this instruction. | |
| bool | hasOneMemOperand () const |
| Return true if this instruction has exactly one MachineMemOperand. | |
| unsigned | getNumMemOperands () const |
| Return the number of memory operands. | |
| MCSymbol * | getPreInstrSymbol () const |
| Helper to extract a pre-instruction symbol if one has been added. | |
| MCSymbol * | getPostInstrSymbol () const |
| Helper to extract a post-instruction symbol if one has been added. | |
| MDNode * | getHeapAllocMarker () const |
| Helper to extract a heap alloc marker if one has been added. | |
| MDNode * | getPCSections () const |
| Helper to extract PCSections metadata target sections. | |
| MDNode * | getMMRAMetadata () const |
| Helper to extract mmra.op metadata. | |
| uint32_t | getCFIType () const |
| Helper to extract a CFI type hash if one has been added. | |
| bool | hasProperty (unsigned MCFlag, QueryType Type=AnyInBundle) const |
| Return true if the instruction (or in the case of a bundle, the instructions inside the bundle) has the specified property. | |
| bool | isPreISelOpcode (QueryType Type=IgnoreBundle) const |
| Return true if this is an instruction that should go through the usual legalization steps. | |
| bool | isVariadic (QueryType Type=IgnoreBundle) const |
| Return true if this instruction can have a variable number of operands. | |
| bool | hasOptionalDef (QueryType Type=IgnoreBundle) const |
| Set if this instruction has an optional definition, e.g. | |
| bool | isPseudo (QueryType Type=IgnoreBundle) const |
| Return true if this is a pseudo instruction that doesn't correspond to a real machine instruction. | |
| bool | isMetaInstruction (QueryType Type=IgnoreBundle) const |
| Return true if this instruction doesn't produce any output in the form of executable instructions. | |
| bool | isReturn (QueryType Type=AnyInBundle) const |
| bool | isEHScopeReturn (QueryType Type=AnyInBundle) const |
| Return true if this is an instruction that marks the end of an EH scope, i.e., a catchpad or a cleanuppad instruction. | |
| bool | isCall (QueryType Type=AnyInBundle) const |
| bool | isCandidateForCallSiteEntry (QueryType Type=IgnoreBundle) const |
| Return true if this is a call instruction that may have an associated call site entry in the debug info. | |
| bool | shouldUpdateCallSiteInfo () const |
| Return true if copying, moving, or erasing this instruction requires updating Call Site Info (see copyCallSiteInfo, moveCallSiteInfo, eraseCallSiteInfo). | |
| bool | isBarrier (QueryType Type=AnyInBundle) const |
| Returns true if the specified instruction stops control flow from executing the instruction immediately following it. | |
| bool | isTerminator (QueryType Type=AnyInBundle) const |
| Returns true if this instruction part of the terminator for a basic block. | |
| bool | isBranch (QueryType Type=AnyInBundle) const |
| Returns true if this is a conditional, unconditional, or indirect branch. | |
| bool | isIndirectBranch (QueryType Type=AnyInBundle) const |
| Return true if this is an indirect branch, such as a branch through a register. | |
| bool | isConditionalBranch (QueryType Type=AnyInBundle) const |
| Return true if this is a branch which may fall through to the next instruction or may transfer control flow to some other block. | |
| bool | isUnconditionalBranch (QueryType Type=AnyInBundle) const |
| Return true if this is a branch which always transfers control flow to some other block. | |
| bool | isPredicable (QueryType Type=AllInBundle) const |
| Return true if this instruction has a predicate operand that controls execution. | |
| bool | isCompare (QueryType Type=IgnoreBundle) const |
| Return true if this instruction is a comparison. | |
| bool | isMoveImmediate (QueryType Type=IgnoreBundle) const |
| Return true if this instruction is a move immediate (including conditional moves) instruction. | |
| bool | isMoveReg (QueryType Type=IgnoreBundle) const |
| Return true if this instruction is a register move. | |
| bool | isBitcast (QueryType Type=IgnoreBundle) const |
| Return true if this instruction is a bitcast instruction. | |
| bool | isSelect (QueryType Type=IgnoreBundle) const |
| Return true if this instruction is a select instruction. | |
| bool | isNotDuplicable (QueryType Type=AnyInBundle) const |
| Return true if this instruction cannot be safely duplicated. | |
| bool | isConvergent (QueryType Type=AnyInBundle) const |
| Return true if this instruction is convergent. | |
| bool | hasDelaySlot (QueryType Type=AnyInBundle) const |
| Returns true if the specified instruction has a delay slot which must be filled by the code generator. | |
| bool | canFoldAsLoad (QueryType Type=IgnoreBundle) const |
| Return true for instructions that can be folded as memory operands in other instructions. | |
| bool | isRegSequenceLike (QueryType Type=IgnoreBundle) const |
| Return true if this instruction behaves the same way as the generic REG_SEQUENCE instructions. | |
| bool | isExtractSubregLike (QueryType Type=IgnoreBundle) const |
| Return true if this instruction behaves the same way as the generic EXTRACT_SUBREG instructions. | |
| bool | isInsertSubregLike (QueryType Type=IgnoreBundle) const |
| Return true if this instruction behaves the same way as the generic INSERT_SUBREG instructions. | |
| bool | mayLoad (QueryType Type=AnyInBundle) const |
| Return true if this instruction could possibly read memory. | |
| bool | mayStore (QueryType Type=AnyInBundle) const |
| Return true if this instruction could possibly modify memory. | |
| bool | mayLoadOrStore (QueryType Type=AnyInBundle) const |
| Return true if this instruction could possibly read or modify memory. | |
| bool | mayRaiseFPException () const |
| Return true if this instruction could possibly raise a floating-point exception. | |
| bool | isCommutable (QueryType Type=IgnoreBundle) const |
| Return true if this may be a 2- or 3-address instruction (of the form "X = op Y, Z, ..."), which produces the same result if Y and Z are exchanged. | |
| bool | isConvertibleTo3Addr (QueryType Type=IgnoreBundle) const |
| Return true if this is a 2-address instruction which can be changed into a 3-address instruction if needed. | |
| bool | usesCustomInsertionHook (QueryType Type=IgnoreBundle) const |
| Return true if this instruction requires custom insertion support when the DAG scheduler is inserting it into a machine basic block. | |
| bool | hasPostISelHook (QueryType Type=IgnoreBundle) const |
| Return true if this instruction requires adjustment after instruction selection by calling a target hook. | |
| bool | isRematerializable (QueryType Type=AllInBundle) const |
| Returns true if this instruction is a candidate for remat. | |
| bool | isAsCheapAsAMove (QueryType Type=AllInBundle) const |
| Returns true if this instruction has the same cost (or less) than a move instruction. | |
| bool | hasExtraSrcRegAllocReq (QueryType Type=AnyInBundle) const |
| Returns true if this instruction source operands have special register allocation requirements that are not captured by the operand register classes. | |
| bool | hasExtraDefRegAllocReq (QueryType Type=AnyInBundle) const |
| Returns true if this instruction def operands have special register allocation requirements that are not captured by the operand register classes. | |
| bool | isIdenticalTo (const MachineInstr &Other, MICheckType Check=CheckDefs) const |
Return true if this instruction is identical to Other. | |
| bool | isEquivalentDbgInstr (const MachineInstr &Other) const |
Returns true if this instruction is a debug instruction that represents an identical debug value to Other. | |
| MachineInstr * | removeFromParent () |
| Unlink 'this' from the containing basic block, and return it without deleting it. | |
| MachineInstr * | removeFromBundle () |
| Unlink this instruction from its basic block and return it without deleting it. | |
| void | eraseFromParent () |
| Unlink 'this' from the containing basic block and delete it. | |
| void | eraseFromBundle () |
| Unlink 'this' from its basic block and delete it. | |
| bool | isEHLabel () const |
| bool | isGCLabel () const |
| bool | isAnnotationLabel () const |
| bool | isLifetimeMarker () const |
| bool | isLabel () const |
| Returns true if the MachineInstr represents a label. | |
| bool | isCFIInstruction () const |
| bool | isPseudoProbe () const |
| bool | isPosition () const |
| bool | isNonListDebugValue () const |
| bool | isDebugValueList () const |
| bool | isDebugValue () const |
| bool | isDebugLabel () const |
| bool | isDebugRef () const |
| bool | isDebugValueLike () const |
| bool | isDebugPHI () const |
| bool | isDebugInstr () const |
| bool | isDebugOrPseudoInstr () const |
| bool | isDebugOffsetImm () const |
| bool | isIndirectDebugValue () const |
| A DBG_VALUE is indirect iff the location operand is a register and the offset operand is an immediate. | |
| bool | isDebugEntryValue () const |
| A DBG_VALUE is an entry value iff its debug expression contains the DW_OP_LLVM_entry_value operation. | |
| bool | isUndefDebugValue () const |
| Return true if the instruction is a debug value which describes a part of a variable as unavailable. | |
| bool | isJumpTableDebugInfo () const |
| bool | isPHI () const |
| bool | isKill () const |
| bool | isImplicitDef () const |
| bool | isInlineAsm () const |
| bool | mayFoldInlineAsmRegOp (unsigned OpId) const |
| Returns true if the register operand can be folded with a load or store into a frame index. | |
| bool | isStackAligningInlineAsm () const |
| InlineAsm::AsmDialect | getInlineAsmDialect () const |
| bool | isInsertSubreg () const |
| bool | isSubregToReg () const |
| bool | isRegSequence () const |
| bool | isBundle () const |
| bool | isCopy () const |
| bool | isFullCopy () const |
| bool | isExtractSubreg () const |
| bool | isFakeUse () const |
| bool | isCopyLike () const |
| Return true if the instruction behaves like a copy. | |
| bool | isIdentityCopy () const |
| Return true is the instruction is an identity copy. | |
| bool | isTransient () const |
| Return true if this is a transient instruction that is either very likely to be eliminated during register allocation (such as copy-like instructions), or if this instruction doesn't have an execution-time cost. | |
| unsigned | getBundleSize () const |
| Return the number of instructions inside the MI bundle, excluding the bundle header. | |
| bool | readsRegister (Register Reg, const TargetRegisterInfo *TRI) const |
| Return true if the MachineInstr reads the specified register. | |
| bool | readsVirtualRegister (Register Reg) const |
| Return true if the MachineInstr reads the specified virtual register. | |
| std::pair< bool, bool > | readsWritesVirtualRegister (Register Reg, SmallVectorImpl< unsigned > *Ops=nullptr) const |
| Return a pair of bools (reads, writes) indicating if this instruction reads or writes Reg. | |
| bool | killsRegister (Register Reg, const TargetRegisterInfo *TRI) const |
| Return true if the MachineInstr kills the specified register. | |
| bool | definesRegister (Register Reg, const TargetRegisterInfo *TRI) const |
| Return true if the MachineInstr fully defines the specified register. | |
| bool | modifiesRegister (Register Reg, const TargetRegisterInfo *TRI) const |
| Return true if the MachineInstr modifies (fully define or partially define) the specified register. | |
| bool | registerDefIsDead (Register Reg, const TargetRegisterInfo *TRI) const |
| Returns true if the register is dead in this machine instruction. | |
| bool | hasRegisterImplicitUseOperand (Register Reg) const |
| Returns true if the MachineInstr has an implicit-use operand of exactly the given register (not considering sub/super-registers). | |
| int | findRegisterUseOperandIdx (Register Reg, const TargetRegisterInfo *TRI, bool isKill=false) const |
| Returns the operand index that is a use of the specific register or -1 if it is not found. | |
| MachineOperand * | findRegisterUseOperand (Register Reg, const TargetRegisterInfo *TRI, bool isKill=false) |
| Wrapper for findRegisterUseOperandIdx, it returns a pointer to the MachineOperand rather than an index. | |
| const MachineOperand * | findRegisterUseOperand (Register Reg, const TargetRegisterInfo *TRI, bool isKill=false) const |
| int | findRegisterDefOperandIdx (Register Reg, const TargetRegisterInfo *TRI, bool isDead=false, bool Overlap=false) const |
| Returns the operand index that is a def of the specified register or -1 if it is not found. | |
| MachineOperand * | findRegisterDefOperand (Register Reg, const TargetRegisterInfo *TRI, bool isDead=false, bool Overlap=false) |
| Wrapper for findRegisterDefOperandIdx, it returns a pointer to the MachineOperand rather than an index. | |
| const MachineOperand * | findRegisterDefOperand (Register Reg, const TargetRegisterInfo *TRI, bool isDead=false, bool Overlap=false) const |
| int | findFirstPredOperandIdx () const |
| Find the index of the first operand in the operand list that is used to represent the predicate. | |
| int | findInlineAsmFlagIdx (unsigned OpIdx, unsigned *GroupNo=nullptr) const |
| Find the index of the flag word operand that corresponds to operand OpIdx on an inline asm instruction. | |
| const TargetRegisterClass * | getRegClassConstraint (unsigned OpIdx, const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const |
| Compute the static register class constraint for operand OpIdx. | |
| const TargetRegisterClass * | getRegClassConstraintEffectForVReg (Register Reg, const TargetRegisterClass *CurRC, const TargetInstrInfo *TII, const TargetRegisterInfo *TRI, bool ExploreBundle=false) const |
Applies the constraints (def/use) implied by this MI on Reg to the given CurRC. | |
| const TargetRegisterClass * | getRegClassConstraintEffect (unsigned OpIdx, const TargetRegisterClass *CurRC, const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const |
Applies the constraints (def/use) implied by the OpIdx operand to the given CurRC. | |
| void | tieOperands (unsigned DefIdx, unsigned UseIdx) |
| Add a tie between the register operands at DefIdx and UseIdx. | |
| unsigned | findTiedOperandIdx (unsigned OpIdx) const |
| Given the index of a tied register operand, find the operand it is tied to. | |
| bool | isRegTiedToUseOperand (unsigned DefOpIdx, unsigned *UseOpIdx=nullptr) const |
| Given the index of a register def operand, check if the register def is tied to a source operand, due to either two-address elimination or inline assembly constraints. | |
| bool | isRegTiedToDefOperand (unsigned UseOpIdx, unsigned *DefOpIdx=nullptr) const |
| Return true if the use operand of the specified index is tied to a def operand. | |
| void | clearKillInfo () |
| Clears kill flags on all operands. | |
| void | substituteRegister (Register FromReg, Register ToReg, unsigned SubIdx, const TargetRegisterInfo &RegInfo) |
| Replace all occurrences of FromReg with ToReg:SubIdx, properly composing subreg indices where necessary. | |
| bool | addRegisterKilled (Register IncomingReg, const TargetRegisterInfo *RegInfo, bool AddIfNotFound=false) |
| We have determined MI kills a register. | |
| void | clearRegisterKills (Register Reg, const TargetRegisterInfo *RegInfo) |
| Clear all kill flags affecting Reg. | |
| bool | addRegisterDead (Register Reg, const TargetRegisterInfo *RegInfo, bool AddIfNotFound=false) |
| We have determined MI defined a register without a use. | |
| void | clearRegisterDeads (Register Reg) |
Clear all dead flags on operands defining register Reg. | |
| void | setRegisterDefReadUndef (Register Reg, bool IsUndef=true) |
Mark all subregister defs of register Reg with the undef flag. | |
| void | addRegisterDefined (Register Reg, const TargetRegisterInfo *RegInfo=nullptr) |
| We have determined MI defines a register. | |
| void | setPhysRegsDeadExcept (ArrayRef< Register > UsedRegs, const TargetRegisterInfo &TRI) |
| Mark every physreg used by this instruction as dead except those in the UsedRegs list. | |
| bool | isSafeToMove (bool &SawStore) const |
| Return true if it is safe to move this instruction. | |
| bool | wouldBeTriviallyDead () const |
| Return true if this instruction would be trivially dead if all of its defined registers were dead. | |
| bool | mayAlias (AAResults *AA, const MachineInstr &Other, bool UseTBAA) const |
| Returns true if this instruction's memory access aliases the memory access of Other. | |
| bool | hasOrderedMemoryRef () const |
| Return true if this instruction may have an ordered or volatile memory reference, or if the information describing the memory reference is not available. | |
| bool | isDereferenceableInvariantLoad () const |
| Return true if this load instruction never traps and points to a memory location whose value doesn't change during the execution of this function. | |
| Register | isConstantValuePHI () const |
| If the specified instruction is a PHI that always merges together the same virtual register, return the register, otherwise return Register(). | |
| bool | hasUnmodeledSideEffects () const |
| Return true if this instruction has side effects that are not modeled by mayLoad / mayStore, etc. | |
| bool | isLoadFoldBarrier () const |
| Returns true if it is illegal to fold a load across this instruction. | |
| bool | allDefsAreDead () const |
| Return true if all the defs of this instruction are dead. | |
| bool | allImplicitDefsAreDead () const |
| Return true if all the implicit defs of this instruction are dead. | |
| std::optional< LocationSize > | getSpillSize (const TargetInstrInfo *TII) const |
| Return a valid size if the instruction is a spill instruction. | |
| std::optional< LocationSize > | getFoldedSpillSize (const TargetInstrInfo *TII) const |
| Return a valid size if the instruction is a folded spill instruction. | |
| std::optional< LocationSize > | getRestoreSize (const TargetInstrInfo *TII) const |
| Return a valid size if the instruction is a restore instruction. | |
| std::optional< LocationSize > | getFoldedRestoreSize (const TargetInstrInfo *TII) const |
| Return a valid size if the instruction is a folded restore instruction. | |
| void | copyImplicitOps (MachineFunction &MF, const MachineInstr &MI) |
| Copy implicit register operands from specified instruction to this instruction. | |
| void | addOperand (MachineFunction &MF, const MachineOperand &Op) |
| Add the specified operand to the instruction. | |
| void | addOperand (const MachineOperand &Op) |
| Add an operand without providing an MF reference. | |
| void | insert (mop_iterator InsertBefore, ArrayRef< MachineOperand > Ops) |
| Inserts Ops BEFORE It. Can untie/retie tied operands. | |
| void | setDesc (const MCInstrDesc &TID) |
| Replace the instruction descriptor (thus opcode) of the current instruction with a new one. | |
| void | setDebugLoc (DebugLoc DL) |
| Replace current source information with new such. | |
| void | removeOperand (unsigned OpNo) |
| Erase an operand from an instruction, leaving it with one fewer operand than it started with. | |
| void | dropMemRefs (MachineFunction &MF) |
| Clear this MachineInstr's memory reference descriptor list. | |
| void | setMemRefs (MachineFunction &MF, ArrayRef< MachineMemOperand * > MemRefs) |
| Assign this MachineInstr's memory reference descriptor list. | |
| void | addMemOperand (MachineFunction &MF, MachineMemOperand *MO) |
| Add a MachineMemOperand to the machine instruction. | |
| void | cloneMemRefs (MachineFunction &MF, const MachineInstr &MI) |
| Clone another MachineInstr's memory reference descriptor list and replace ours with it. | |
| void | cloneMergedMemRefs (MachineFunction &MF, ArrayRef< const MachineInstr * > MIs) |
| Clone the merge of multiple MachineInstrs' memory reference descriptors list and replace ours with it. | |
| void | setPreInstrSymbol (MachineFunction &MF, MCSymbol *Symbol) |
| Set a symbol that will be emitted just prior to the instruction itself. | |
| void | setPostInstrSymbol (MachineFunction &MF, MCSymbol *Symbol) |
| Set a symbol that will be emitted just after the instruction itself. | |
| void | cloneInstrSymbols (MachineFunction &MF, const MachineInstr &MI) |
| Clone another MachineInstr's pre- and post- instruction symbols and replace ours with it. | |
| void | setHeapAllocMarker (MachineFunction &MF, MDNode *MD) |
| Set a marker on instructions that denotes where we should create and emit heap alloc site labels. | |
| void | setPCSections (MachineFunction &MF, MDNode *MD) |
| void | setMMRAMetadata (MachineFunction &MF, MDNode *MMRAs) |
| void | setCFIType (MachineFunction &MF, uint32_t Type) |
| Set the CFI type for the instruction. | |
| uint32_t | mergeFlagsWith (const MachineInstr &Other) const |
| Return the MIFlags which represent both MachineInstrs. | |
| void | copyIRFlags (const Instruction &I) |
| Copy all flags to MachineInst MIFlags. | |
| void | untieRegOperand (unsigned OpIdx) |
| Break any tie involving OpIdx. | |
| void | addImplicitDefUseOperands (MachineFunction &MF) |
| Add all implicit def and use operands to this instruction. | |
| void | collectDebugValues (SmallVectorImpl< MachineInstr * > &DbgValues) |
| Scan instructions immediately following MI and collect any matching DBG_VALUEs. | |
| void | changeDebugValuesDefReg (Register Reg) |
Find all DBG_VALUEs that point to the register def in this instruction and point them to Reg instead. | |
| void | setDebugValueUndef () |
| Sets all register debug operands in this debug value instruction to be undef. | |
| std::tuple< Register, Register > | getFirst2Regs () const |
| std::tuple< Register, Register, Register > | getFirst3Regs () const |
| std::tuple< Register, Register, Register, Register > | getFirst4Regs () const |
| std::tuple< Register, Register, Register, Register, Register > | getFirst5Regs () const |
| std::tuple< LLT, LLT > | getFirst2LLTs () const |
| std::tuple< LLT, LLT, LLT > | getFirst3LLTs () const |
| std::tuple< LLT, LLT, LLT, LLT > | getFirst4LLTs () const |
| std::tuple< LLT, LLT, LLT, LLT, LLT > | getFirst5LLTs () const |
| std::tuple< Register, LLT, Register, LLT > | getFirst2RegLLTs () const |
| std::tuple< Register, LLT, Register, LLT, Register, LLT > | getFirst3RegLLTs () const |
| std::tuple< Register, LLT, Register, LLT, Register, LLT, Register, LLT > | getFirst4RegLLTs () const |
| std::tuple< Register, LLT, Register, LLT, Register, LLT, Register, LLT, Register, LLT > | getFirst5RegLLTs () const |
| LLT | getTypeToPrint (unsigned OpIdx, SmallBitVector &PrintedTypes, const MachineRegisterInfo &MRI) const |
| Debugging supportDetermine the generic type to be printed (if needed) on uses and defs. | |
| bool | hasComplexRegisterTies () const |
| Return true when an instruction has tied register that can't be determined by the instruction's descriptor. | |
| void | print (raw_ostream &OS, bool IsStandalone=true, bool SkipOpers=false, bool SkipDebugLoc=false, bool AddNewLine=true, const TargetInstrInfo *TII=nullptr) const |
Print this MI to OS. | |
| void | print (raw_ostream &OS, ModuleSlotTracker &MST, bool IsStandalone=true, bool SkipOpers=false, bool SkipDebugLoc=false, bool AddNewLine=true, const TargetInstrInfo *TII=nullptr) const |
| void | dump () const |
| void | dumpr (const MachineRegisterInfo &MRI, unsigned MaxDepth=UINT_MAX) const |
Print on dbgs() the current instruction and the instructions defining its operands and so on until we reach MaxDepth. | |
| Public Member Functions inherited from llvm::ilist_node_with_parent< MachineInstr, MachineBasicBlock, ilist_sentinel_tracking< true > > | |
| MachineInstr * | getPrevNode () |
| const MachineInstr * | getPrevNode () const |
Get the previous node, or nullptr for the list head. | |
| MachineInstr * | getNextNode () |
Get the next node, or nullptr for the list tail. | |
| const MachineInstr * | getNextNode () const |
Get the next node, or nullptr for the list tail. | |
| Public Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type > | |
| self_iterator | getIterator () |
| const_self_iterator | getIterator () const |
| reverse_self_iterator | getReverseIterator () |
| const_reverse_self_iterator | getReverseIterator () const |
| bool | isSentinel () const |
| Check whether this is the sentinel node. | |
| Public Member Functions inherited from llvm::ilist_detail::node_parent_access< NodeTy, ParentTy > | |
| const ParentTy * | getParent () const |
| ParentTy * | getParent () |
| void | setParent (ParentTy *Parent) |
| Protected Types inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type > | |
| using | self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, false, false >::type |
| using | const_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, false, true >::type |
| using | reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, true, false >::type |
| using | const_reverse_self_iterator = typename ilist_select_iterator_type< OptionsT::has_iterator_bits, ilist_detail::compute_node_options< T, Options... >::type, true, true >::type |
| Protected Member Functions inherited from llvm::ilist_node_with_parent< MachineInstr, MachineBasicBlock, ilist_sentinel_tracking< true > > | |
| ilist_node_with_parent ()=default | |
| Protected Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< T, Options... >::type > | |
| ilist_node_impl ()=default | |
Detailed Description
Represents a G_MERGE_VALUES.
Definition at line 284 of file GenericMachineInstrs.h.
Member Function Documentation
◆ classof()
|
inlinestatic |
Definition at line 286 of file GenericMachineInstrs.h.
References MI.
The documentation for this class was generated from the following file:
- include/llvm/CodeGen/GlobalISel/GenericMachineInstrs.h
