llvm::SelectionDAGBuilder Class Reference

SelectionDAGBuilder - This is the common target-independent lowering implementation that is parameterized by a TargetLowering object. More...

#include "CodeGen/SelectionDAG/SelectionDAGBuilder.h"

Classes
class	SDAGSwitchLowering
struct	StatepointLoweringInfo
	Describes a gc.statepoint or a gc.statepoint like thing for the purposes of lowering into a STATEPOINT node. More...

Public Member Functions
	SelectionDAGBuilder (SelectionDAG &dag, FunctionLoweringInfo &funcinfo, SwiftErrorValueTracking &swifterror, CodeGenOptLevel ol)
void	init (GCFunctionInfo *gfi, BatchAAResults *BatchAA, AssumptionCache *AC, const TargetLibraryInfo *li)
void	clear ()
	Clear out the current SelectionDAG and the associated state and prepare this SelectionDAGBuilder object to be used for a new block.
void	clearDanglingDebugInfo ()
	Clear the dangling debug information map.
SDValue	getMemoryRoot ()
	Return the current virtual root of the Selection DAG, flushing any PendingLoad items.
SDValue	getRoot ()
	Similar to getMemoryRoot, but also flushes PendingConstrainedFP(Strict) items.
SDValue	getControlRoot ()
	Similar to getRoot, but instead of flushing all the PendingLoad items, flush all the PendingExports (and PendingConstrainedFPStrict) items.
SDLoc	getCurSDLoc () const
DebugLoc	getCurDebugLoc () const
void	CopyValueToVirtualRegister (const Value *V, Register Reg, ISD::NodeType ExtendType=ISD::ANY_EXTEND)
void	visit (const Instruction &I)
void	visitDbgInfo (const Instruction &I)
void	visit (unsigned Opcode, const User &I)
SDValue	getCopyFromRegs (const Value *V, Type *Ty)
	If there was virtual register allocated for the value V emit CopyFromReg of the specified type Ty.
void	addDanglingDebugInfo (SmallVectorImpl< Value * > &Values, DILocalVariable *Var, DIExpression *Expr, bool IsVariadic, DebugLoc DL, unsigned Order)
	Register a dbg_value which relies on a Value which we have not yet seen.
void	dropDanglingDebugInfo (const DILocalVariable *Variable, const DIExpression *Expr)
	If we have dangling debug info that describes Variable, or an overlapping part of variable considering the Expr, then this method will drop that debug info as it isn't valid any longer.
void	resolveDanglingDebugInfo (const Value *V, SDValue Val)
	If we saw an earlier dbg_value referring to V, generate the debug data structures now that we've seen its definition.
void	salvageUnresolvedDbgValue (const Value *V, DanglingDebugInfo &DDI)
	For the given dangling debuginfo record, perform last-ditch efforts to resolve the debuginfo to something that is represented in this DAG.
bool	handleDebugValue (ArrayRef< const Value * > Values, DILocalVariable *Var, DIExpression *Expr, DebugLoc DbgLoc, unsigned Order, bool IsVariadic)
	For a given list of Values, attempt to create and record a SDDbgValue in the SelectionDAG.
void	handleKillDebugValue (DILocalVariable *Var, DIExpression *Expr, DebugLoc DbgLoc, unsigned Order)
	Create a record for a kill location debug intrinsic.
void	handleDebugDeclare (Value *Address, DILocalVariable *Variable, DIExpression *Expression, DebugLoc DL)
void	resolveOrClearDbgInfo ()
	Evict any dangling debug information, attempting to salvage it first.
SDValue	getValue (const Value *V)
	getValue - Return an SDValue for the given Value.
SDValue	getNonRegisterValue (const Value *V)
	getNonRegisterValue - Return an SDValue for the given Value, but don't look in FuncInfo.ValueMap for a virtual register.
SDValue	getValueImpl (const Value *V)
	getValueImpl - Helper function for getValue and getNonRegisterValue.
void	setValue (const Value *V, SDValue NewN)
void	setUnusedArgValue (const Value *V, SDValue NewN)
bool	shouldKeepJumpConditionsTogether (const FunctionLoweringInfo &FuncInfo, const BranchInst &I, Instruction::BinaryOps Opc, const Value *Lhs, const Value *Rhs, TargetLoweringBase::CondMergingParams Params) const
void	FindMergedConditions (const Value *Cond, MachineBasicBlock *TBB, MachineBasicBlock *FBB, MachineBasicBlock *CurBB, MachineBasicBlock *SwitchBB, Instruction::BinaryOps Opc, BranchProbability TProb, BranchProbability FProb, bool InvertCond)
void	EmitBranchForMergedCondition (const Value *Cond, MachineBasicBlock *TBB, MachineBasicBlock *FBB, MachineBasicBlock *CurBB, MachineBasicBlock *SwitchBB, BranchProbability TProb, BranchProbability FProb, bool InvertCond)
	EmitBranchForMergedCondition - Helper method for FindMergedConditions.
bool	ShouldEmitAsBranches (const std::vector< SwitchCG::CaseBlock > &Cases)
	If the set of cases should be emitted as a series of branches, return true.
bool	isExportableFromCurrentBlock (const Value *V, const BasicBlock *FromBB)
void	CopyToExportRegsIfNeeded (const Value *V)
	CopyToExportRegsIfNeeded - If the given value has virtual registers created for it, emit nodes to copy the value into the virtual registers.
void	ExportFromCurrentBlock (const Value *V)
	ExportFromCurrentBlock - If this condition isn't known to be exported from the current basic block, add it to ValueMap now so that we'll get a CopyTo/FromReg.
void	LowerCallTo (const CallBase &CB, SDValue Callee, bool IsTailCall, bool IsMustTailCall, const BasicBlock *EHPadBB=nullptr, const TargetLowering::PtrAuthInfo *PAI=nullptr)
bool	canTailCall (const CallBase &CB) const
SDValue	lowerRangeToAssertZExt (SelectionDAG &DAG, const Instruction &I, SDValue Op)
void	populateCallLoweringInfo (TargetLowering::CallLoweringInfo &CLI, const CallBase *Call, unsigned ArgIdx, unsigned NumArgs, SDValue Callee, Type *ReturnTy, AttributeSet RetAttrs, bool IsPatchPoint)
	Populate a CallLowerinInfo (into CLI) based on the properties of the call being lowered.
std::pair< SDValue, SDValue >	lowerInvokable (TargetLowering::CallLoweringInfo &CLI, const BasicBlock *EHPadBB=nullptr)
void	UpdateSplitBlock (MachineBasicBlock *First, MachineBasicBlock *Last)
	When an MBB was split during scheduling, update the references that need to refer to the last resulting block.
SDValue	LowerAsSTATEPOINT (StatepointLoweringInfo &SI)
	Lower SLI into a STATEPOINT instruction.
void	LowerStatepoint (const GCStatepointInst &I, const BasicBlock *EHPadBB=nullptr)
void	LowerCallSiteWithDeoptBundle (const CallBase *Call, SDValue Callee, const BasicBlock *EHPadBB)
void	LowerDeoptimizeCall (const CallInst *CI)
void	LowerDeoptimizingReturn ()
void	LowerCallSiteWithDeoptBundleImpl (const CallBase *Call, SDValue Callee, const BasicBlock *EHPadBB, bool VarArgDisallowed, bool ForceVoidReturnTy)
void	LowerCallSiteWithPtrAuthBundle (const CallBase &CB, const BasicBlock *EHPadBB)
MVT	getFrameIndexTy ()
	Returns the type of FrameIndex and TargetFrameIndex nodes.
void	visitSwitchCase (SwitchCG::CaseBlock &CB, MachineBasicBlock *SwitchBB)
	visitSwitchCase - Emits the necessary code to represent a single node in the binary search tree resulting from lowering a switch instruction.
void	visitSPDescriptorParent (StackProtectorDescriptor &SPD, MachineBasicBlock *ParentBB)
	Codegen a new tail for a stack protector check ParentMBB which has had its tail spliced into a stack protector check success bb.
void	visitSPDescriptorFailure (StackProtectorDescriptor &SPD)
	Codegen the failure basic block for a stack protector check.
void	visitBitTestHeader (SwitchCG::BitTestBlock &B, MachineBasicBlock *SwitchBB)
	visitBitTestHeader - This function emits necessary code to produce value suitable for "bit tests"
void	visitBitTestCase (SwitchCG::BitTestBlock &BB, MachineBasicBlock *NextMBB, BranchProbability BranchProbToNext, Register Reg, SwitchCG::BitTestCase &B, MachineBasicBlock *SwitchBB)
	visitBitTestCase - this function produces one "bit test"
void	visitJumpTable (SwitchCG::JumpTable &JT)
	visitJumpTable - Emit JumpTable node in the current MBB
void	visitJumpTableHeader (SwitchCG::JumpTable &JT, SwitchCG::JumpTableHeader &JTH, MachineBasicBlock *SwitchBB)
	visitJumpTableHeader - This function emits necessary code to produce index in the JumpTable from switch case.

Public Attributes
SmallVector< SDValue, 8 >	PendingLoads
	Loads are not emitted to the program immediately.
StatepointLoweringState	StatepointLowering
	State used while lowering a statepoint sequence (gc_statepoint, gc_relocate, and gc_result).
SelectionDAG &	DAG
BatchAAResults *	BatchAA = nullptr
AssumptionCache *	AC = nullptr
const TargetLibraryInfo *	LibInfo = nullptr
std::unique_ptr< SDAGSwitchLowering >	SL
StackProtectorDescriptor	SPDescriptor
	A StackProtectorDescriptor structure used to communicate stack protector information in between SelectBasicBlock and FinishBasicBlock.
DenseMap< const Constant *, Register >	ConstantsOut
FunctionLoweringInfo &	FuncInfo
	Information about the function as a whole.
SwiftErrorValueTracking &	SwiftError
	Information about the swifterror values used throughout the function.
GCFunctionInfo *	GFI = nullptr
	Garbage collection metadata for the function.
DenseMap< MachineBasicBlock *, SmallVector< unsigned, 4 > >	LPadToCallSiteMap
	Map a landing pad to the call site indexes.
bool	HasTailCall = false
	This is set to true if a call in the current block has been translated as a tail call.
LLVMContext *	Context = nullptr

Static Public Attributes
static const unsigned	LowestSDNodeOrder = 1
	Lowest valid SDNodeOrder.

Detailed Description

SelectionDAGBuilder - This is the common target-independent lowering implementation that is parameterized by a TargetLowering object.

Definition at line 96 of file SelectionDAGBuilder.h.

Constructor & Destructor Documentation

SelectionDAGBuilder()

llvm::SelectionDAGBuilder::SelectionDAGBuilder ( SelectionDAG & dag, FunctionLoweringInfo & funcinfo, SwiftErrorValueTracking & swifterror, CodeGenOptLevel ol )

inline

Definition at line 276 of file SelectionDAGBuilder.h.

References DAG, FuncInfo, LowestSDNodeOrder, SL, and SwiftError.

Referenced by llvm::SelectionDAGBuilder::SDAGSwitchLowering::SDAGSwitchLowering().

Member Function Documentation

addDanglingDebugInfo()

void SelectionDAGBuilder::addDanglingDebugInfo	(	SmallVectorImpl< Value * > &	Values,
		DILocalVariable *	Var,
		DIExpression *	Expr,
		bool	IsVariadic,
		DebugLoc	DL,
		unsigned	Order )

Register a dbg_value which relies on a Value which we have not yet seen.

Definition at line 1414 of file SelectionDAGBuilder.cpp.

References assert(), DAG, DL, handleDanglingVariadicDebugInfo(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by visitDbgInfo().

canTailCall()

bool SelectionDAGBuilder::canTailCall

(

const CallBase &

CB

)

const

Definition at line 8934 of file SelectionDAGBuilder.cpp.

References DAG, llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::isInTailCallPosition(), and llvm::CallBase::isMustTailCall().

Referenced by LowerCallTo().

clear()

void SelectionDAGBuilder::clear

(

)

Clear out the current SelectionDAG and the associated state and prepare this SelectionDAGBuilder object to be used for a new block.

This doesn't clear out information about additional blocks that are needed to complete switch lowering or PHI node updating; that information is cleared out as it is consumed.

Definition at line 1113 of file SelectionDAGBuilder.cpp.

References HasTailCall, LowestSDNodeOrder, PendingLoads, and StatepointLowering.

clearDanglingDebugInfo()

void SelectionDAGBuilder::clearDanglingDebugInfo

(

)

Clear the dangling debug information map.

This function is separated from the clear so that debug information that is dangling in a basic block can be properly resolved in a different basic block. This allows the SelectionDAG to resolve dangling debug information attached to PHI nodes.

Definition at line 1126 of file SelectionDAGBuilder.cpp.

Referenced by resolveOrClearDbgInfo().

CopyToExportRegsIfNeeded()

void SelectionDAGBuilder::CopyToExportRegsIfNeeded

(

const Value *

V

)

CopyToExportRegsIfNeeded - If the given value has virtual registers created for it, emit nodes to copy the value into the virtual registers.

Definition at line 2317 of file SelectionDAGBuilder.cpp.

References assert(), CopyValueToVirtualRegister(), FuncInfo, and llvm::isa().

Referenced by visit().

CopyValueToVirtualRegister()

void SelectionDAGBuilder::CopyValueToVirtualRegister	(	const Value *	V,
		Register	Reg,
		ISD::NodeType	ExtendType = ISD::ANY_EXTEND )

Definition at line 11442 of file SelectionDAGBuilder.cpp.

References llvm::ISD::ANY_EXTEND, assert(), llvm::cast(), llvm::ISD::CopyFromReg, DAG, FuncInfo, llvm::RegsForValue::getCopyToRegs(), getCurSDLoc(), and getNonRegisterValue().

Referenced by CopyToExportRegsIfNeeded(), and ExportFromCurrentBlock().

dropDanglingDebugInfo()

void SelectionDAGBuilder::dropDanglingDebugInfo	(	const DILocalVariable *	Variable,
		const DIExpression *	Expr )

If we have dangling debug info that describes Variable, or an overlapping part of variable considering the Expr, then this method will drop that debug info as it isn't valid any longer.

Definition at line 1431 of file SelectionDAGBuilder.cpp.

References llvm::dbgs(), llvm::erase_if(), llvm::DIExpression::fragmentsOverlap(), LLVM_DEBUG, and salvageUnresolvedDbgValue().

Referenced by visitDbgInfo().

EmitBranchForMergedCondition()

void SelectionDAGBuilder::EmitBranchForMergedCondition	(	const Value *	Cond,
		MachineBasicBlock *	TBB,
		MachineBasicBlock *	FBB,
		MachineBasicBlock *	CurBB,
		MachineBasicBlock *	SwitchBB,
		BranchProbability	TProb,
		BranchProbability	FProb,
		bool	InvertCond )

EmitBranchForMergedCondition - Helper method for FindMergedConditions.

This function emits a branch and is used at the leaves of an OR or an AND operator tree.

Definition at line 2409 of file SelectionDAGBuilder.cpp.

References llvm::cast(), Cond, DAG, llvm::dyn_cast(), llvm::MachineBasicBlock::getBasicBlock(), getCurSDLoc(), llvm::getFCmpCodeWithoutNaN(), llvm::getFCmpCondCode(), llvm::getICmpCondCode(), llvm::ConstantInt::getTrue(), isExportableFromCurrentBlock(), Opc, llvm::ISD::SETEQ, llvm::ISD::SETNE, SL, and TBB.

Referenced by FindMergedConditions().

ExportFromCurrentBlock()

void SelectionDAGBuilder::ExportFromCurrentBlock

(

const Value *

V

)

ExportFromCurrentBlock - If this condition isn't known to be exported from the current basic block, add it to ValueMap now so that we'll get a CopyTo/FromReg.

Definition at line 2333 of file SelectionDAGBuilder.cpp.

References CopyValueToVirtualRegister(), FuncInfo, and llvm::isa().

Referenced by LowerAsSTATEPOINT().

FindMergedConditions()

void SelectionDAGBuilder::FindMergedConditions	(	const Value *	Cond,
		MachineBasicBlock *	TBB,
		MachineBasicBlock *	FBB,
		MachineBasicBlock *	CurBB,
		MachineBasicBlock *	SwitchBB,
		Instruction::BinaryOps	Opc,
		BranchProbability	TProb,
		BranchProbability	FProb,
		bool	InvertCond )

Definition at line 2602 of file SelectionDAGBuilder.cpp.

References assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), Cond, llvm::MachineFunction::CreateMachineBasicBlock(), DAG, llvm::dyn_cast(), EmitBranchForMergedCondition(), llvm::SmallVectorTemplateCommon< T, typename >::end(), FindMergedConditions(), llvm::MachineBasicBlock::getBasicBlock(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::MachineBasicBlock::getParent(), llvm::Value::hasOneUse(), InBlock(), llvm::MachineFunction::insert(), llvm::PatternMatch::m_LogicalAnd(), llvm::PatternMatch::m_LogicalOr(), llvm::MIPatternMatch::m_Not(), llvm::MIPatternMatch::m_OneUse(), llvm::PatternMatch::m_Value(), llvm::PatternMatch::match(), llvm::BranchProbability::normalizeProbabilities(), Opc, and TBB.

Referenced by FindMergedConditions().

getControlRoot()

SDValue SelectionDAGBuilder::getControlRoot

(

)

Similar to getRoot, but instead of flushing all the PendingLoad items, flush all the PendingExports (and PendingConstrainedFPStrict) items.

It is necessary to do this before emitting a terminator instruction.

Definition at line 1181 of file SelectionDAGBuilder.cpp.

Referenced by LowerAsSTATEPOINT(), lowerInvokable(), visitBitTestCase(), visitBitTestHeader(), visitJumpTable(), visitJumpTableHeader(), and visitSwitchCase().

getCopyFromRegs()

SDValue SelectionDAGBuilder::getCopyFromRegs	(	const Value *	V,
		Type *	Ty )

If there was virtual register allocated for the value V emit CopyFromReg of the specified type Ty.

getCopyFromRegs - If there was virtual register allocated for the value V emit CopyFromReg of the specified type Ty.

Return empty SDValue() otherwise.

Definition at line 1737 of file SelectionDAGBuilder.cpp.

References DAG, FuncInfo, llvm::RegsForValue::getCopyFromRegs(), getCurSDLoc(), and resolveDanglingDebugInfo().

Referenced by getValue().

getCurDebugLoc()

DebugLoc llvm::SelectionDAGBuilder::getCurDebugLoc ( ) const

inline

Definition at line 318 of file SelectionDAGBuilder.h.

References llvm::dwarf_linker::DebugLoc.

getCurSDLoc()

SDLoc llvm::SelectionDAGBuilder::getCurSDLoc ( ) const

inline

Definition at line 314 of file SelectionDAGBuilder.h.

Referenced by CopyValueToVirtualRegister(), EmitBranchForMergedCondition(), getCopyFromRegs(), getUniformBase(), getValueImpl(), LowerAsSTATEPOINT(), LowerCallTo(), LowerDeoptimizingReturn(), lowerRangeToAssertZExt(), LowerStatepoint(), populateCallLoweringInfo(), visitBitTestCase(), visitBitTestHeader(), visitSPDescriptorFailure(), visitSPDescriptorParent(), and visitSwitchCase().

getFrameIndexTy()

MVT llvm::SelectionDAGBuilder::getFrameIndexTy ( )

inline

Returns the type of FrameIndex and TargetFrameIndex nodes.

Definition at line 501 of file SelectionDAGBuilder.h.

References DAG.

getMemoryRoot()

SDValue SelectionDAGBuilder::getMemoryRoot

(

)

Return the current virtual root of the Selection DAG, flushing any PendingLoad items.

This must be done before emitting a store or any other memory node that may need to be ordered after any prior load instructions.

Definition at line 1161 of file SelectionDAGBuilder.cpp.

References PendingLoads.

Referenced by getRoot().

getNonRegisterValue()

SDValue SelectionDAGBuilder::getNonRegisterValue

(

const Value *

V

)

getNonRegisterValue - Return an SDValue for the given Value, but don't look in FuncInfo.ValueMap for a virtual register.

Definition at line 1778 of file SelectionDAGBuilder.cpp.

References llvm::dwarf_linker::DebugLoc, getValueImpl(), llvm::isIntOrFPConstant(), N, and resolveDanglingDebugInfo().

Referenced by CopyValueToVirtualRegister().

getRoot()

SDValue SelectionDAGBuilder::getRoot

(

)

Similar to getMemoryRoot, but also flushes PendingConstrainedFP(Strict) items.

This must be done before emitting any call other any other node that may need to be ordered after FP instructions due to other side effects.

Definition at line 1165 of file SelectionDAGBuilder.cpp.

References getMemoryRoot(), and PendingLoads.

Referenced by LowerAsSTATEPOINT(), LowerCallTo(), lowerInvokable(), and populateCallLoweringInfo().

getValue()

SDValue SelectionDAGBuilder::getValue

(

const Value *

V

)

getValue - Return an SDValue for the given Value.

Definition at line 1757 of file SelectionDAGBuilder.cpp.

References getCopyFromRegs(), getValueImpl(), N, and resolveDanglingDebugInfo().

Referenced by getUniformBase(), getValueImpl(), LowerAsSTATEPOINT(), LowerCallSiteWithPtrAuthBundle(), LowerCallTo(), LowerStatepoint(), populateCallLoweringInfo(), visitBitTestHeader(), visitJumpTableHeader(), visitSPDescriptorFailure(), visitSPDescriptorParent(), and visitSwitchCase().

getValueImpl()

SDValue SelectionDAGBuilder::getValueImpl

(

const Value *

V

)

getValueImpl - Helper function for getValue and getNonRegisterValue.

Create an SDValue for the given value.

Definition at line 1801 of file SelectionDAGBuilder.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, assert(), llvm::CallingConv::C, llvm::cast(), llvm::ComputeValueVTs(), DAG, DL, llvm::dyn_cast(), FuncInfo, llvm::RegsForValue::getCopyFromRegs(), getCurSDLoc(), llvm::VectorType::getElementType(), llvm::MVT::getIntegerVT(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getKnownMinValue(), llvm::SDValue::getNode(), llvm::SDNode::getNumValues(), llvm::EVT::getSizeInBits(), getValue(), llvm::TargetLoweringBase::getValueType(), llvm::EVT::getVectorElementType(), llvm::EVT::getVectorVT(), llvm::isa(), llvm::EVT::isFixedLengthVector(), llvm::EVT::isFloatingPoint(), llvm::EVT::isRISCVVectorTuple(), llvm::EVT::isScalableVector(), llvm_unreachable, llvm::PatternMatch::m_VScale(), llvm::PatternMatch::match(), NC, llvm::ISD::PtrAuthGlobalAddress, SDValue(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::ISD::SPLAT_VECTOR, and visit().

Referenced by getNonRegisterValue(), and getValue().

handleDebugDeclare()

void SelectionDAGBuilder::handleDebugDeclare	(	Value *	Address,
		DILocalVariable *	Variable,
		DIExpression *	Expression,
		DebugLoc	DL )

Definition at line 1190 of file SelectionDAGBuilder.cpp.

References llvm::Address, assert(), DAG, llvm::dbgs(), DL, llvm::dyn_cast(), llvm::isa(), LLVM_DEBUG, and N.

Referenced by visitDbgInfo().

handleDebugValue()

bool SelectionDAGBuilder::handleDebugValue	(	ArrayRef< const Value * >	Values,
		DILocalVariable *	Var,
		DIExpression *	Expr,
		DebugLoc	DbgLoc,
		unsigned	Order,
		bool	IsVariadic )

For a given list of Values, attempt to create and record a SDDbgValue in the SelectionDAG.

Definition at line 1590 of file SelectionDAGBuilder.cpp.

References assert(), llvm::DIExpression::createFragmentExpression(), DAG, llvm::dyn_cast(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::ArrayRef< T >::empty(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::SDDbgOperand::fromConst(), llvm::SDDbgOperand::fromFrameIdx(), llvm::SDDbgOperand::fromNode(), llvm::SDDbgOperand::fromVReg(), FuncInfo, llvm::DIExpression::getFragmentInfo(), llvm::DebugLoc::getInlinedAt(), llvm::RegsForValue::getRegsAndSizes(), llvm::DIVariable::getSizeInBits(), llvm::isa(), llvm::DILocalVariable::isParameter(), N, llvm::RegsForValue::occupiesMultipleRegs(), llvm::Offset, and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by handleKillDebugValue(), salvageUnresolvedDbgValue(), and visitDbgInfo().

handleKillDebugValue()

void SelectionDAGBuilder::handleKillDebugValue	(	DILocalVariable *	Var,
		DIExpression *	Expr,
		DebugLoc	DbgLoc,
		unsigned	Order )

Create a record for a kill location debug intrinsic.

Definition at line 1579 of file SelectionDAGBuilder.cpp.

References Context, llvm::DIExpression::convertToUndefExpression(), llvm::PoisonValue::get(), llvm::Type::getInt1Ty(), handleDebugValue(), and Poison.

Referenced by visitDbgInfo().

init()

void SelectionDAGBuilder::init	(	GCFunctionInfo *	gfi,
		BatchAAResults *	BatchAA,
		AssumptionCache *	AC,
		const TargetLibraryInfo *	li )

Definition at line 1099 of file SelectionDAGBuilder.cpp.

References aa, AC, BatchAA, Context, DAG, GFI, llvm::isAssignmentTrackingEnabled(), LibInfo, LPadToCallSiteMap, and SL.

isExportableFromCurrentBlock()

bool SelectionDAGBuilder::isExportableFromCurrentBlock	(	const Value *	V,
		const BasicBlock *	FromBB )

Definition at line 2344 of file SelectionDAGBuilder.cpp.

References llvm::dyn_cast(), FuncInfo, llvm::isa(), and llvm::BasicBlock::isEntryBlock().

Referenced by EmitBranchForMergedCondition().

LowerAsSTATEPOINT()

SDValue SelectionDAGBuilder::LowerAsSTATEPOINT

(

SelectionDAGBuilder::StatepointLoweringInfo &

SI

)

Lower SLI into a STATEPOINT instruction.

Definition at line 707 of file StatepointLowering.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::append_range(), assert(), llvm::cast(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count(), DAG, llvm::dbgs(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), ExportFromCurrentBlock(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), FuncInfo, llvm::GCTransition, getControlRoot(), llvm::RegsForValue::getCopyToRegs(), getCurSDLoc(), llvm::GCRelocateInst::getDerivedPtr(), llvm::SDNode::getGluedNode(), llvm::SDValue::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getNumValues(), llvm::SDNode::getOperand(), llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), getRoot(), llvm::SDValue::getValue(), getValue(), GFI, LLVM_DEBUG, lowerCallFromStatepointLoweringInfo(), lowerStatepointMetaArgs(), llvm::MaskAll, llvm::FunctionLoweringInfo::StatepointRelocationRecord::NoRelocate, llvm::SDNode::op_begin(), llvm::SDNode::op_end(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), pushStackMapConstant(), SDValue(), llvm::FunctionLoweringInfo::StatepointRelocationRecord::SDValueNode, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::size(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::FunctionLoweringInfo::StatepointRelocationRecord::Spill, StatepointLowering, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::try_emplace(), and llvm::FunctionLoweringInfo::StatepointRelocationRecord::VReg.

Referenced by LowerCallSiteWithDeoptBundleImpl(), and LowerStatepoint().

LowerCallSiteWithDeoptBundle()

void SelectionDAGBuilder::LowerCallSiteWithDeoptBundle	(	const CallBase *	Call,
		SDValue	Callee,
		const BasicBlock *	EHPadBB )

Definition at line 1178 of file StatepointLowering.cpp.

References Call, and LowerCallSiteWithDeoptBundleImpl().

LowerCallSiteWithDeoptBundleImpl()

void SelectionDAGBuilder::LowerCallSiteWithDeoptBundleImpl	(	const CallBase *	Call,
		SDValue	Callee,
		const BasicBlock *	EHPadBB,
		bool	VarArgDisallowed,
		bool	ForceVoidReturnTy )

Definition at line 1144 of file StatepointLowering.cpp.

References llvm::ArrayRef(), Call, DAG, llvm::dbgs(), llvm::StatepointDirectives::DeoptBundleStatepointID, llvm::Type::getVoidTy(), LLVM_DEBUG, LowerAsSTATEPOINT(), lowerRangeToAssertZExt(), llvm::None, llvm::LLVMContext::OB_deopt, llvm::parseStatepointDirectivesFromAttrs(), populateCallLoweringInfo(), and setValue().

Referenced by LowerCallSiteWithDeoptBundle(), and LowerDeoptimizeCall().

LowerCallSiteWithPtrAuthBundle()

void SelectionDAGBuilder::LowerCallSiteWithPtrAuthBundle	(	const CallBase &	CB,
		const BasicBlock *	EHPadBB )

Definition at line 9672 of file SelectionDAGBuilder.cpp.

References assert(), llvm::cast(), DAG, llvm::dyn_cast(), llvm::CallBase::getCalledOperand(), llvm::CallBase::getOperandBundle(), getValue(), llvm::InnerAnalysisManagerProxy< AnalysisManagerT, IRUnitT, ExtraArgTs... >::Key, llvm::isa(), llvm::CallBase::isMustTailCall(), llvm::CallBase::isTailCall(), and LowerCallTo().

LowerCallTo()

void SelectionDAGBuilder::LowerCallTo	(	const CallBase &	CB,
		SDValue	Callee,
		bool	IsTailCall,
		bool	IsMustTailCall,
		const BasicBlock *	EHPadBB = nullptr,
		const TargetLowering::PtrAuthInfo *	PAI = nullptr )

Definition at line 8957 of file SelectionDAGBuilder.cpp.

References llvm::CallBase::arg_begin(), llvm::CallBase::arg_end(), llvm::CallBase::arg_size(), assert(), canTailCall(), llvm::cast(), llvm::CallBase::countOperandBundlesOfType(), DAG, llvm::TargetLowering::CallLoweringInfo::DAG, DL, llvm::TargetLowering::CallLoweringInfo::DL, FuncInfo, llvm::SelectionDAG::getCopyToReg(), getCurSDLoc(), llvm::CallBase::getFunctionType(), llvm::CallBase::getOperandBundle(), llvm::TargetLoweringBase::getPointerTy(), getRoot(), llvm::Value::getType(), getValue(), I, llvm::TargetLowering::CallLoweringInfo::InVals, llvm::isa(), llvm::CallBase::isConvergent(), llvm::CallBase::isIndirectCall(), llvm::Type::isIntegerTy(), lowerInvokable(), lowerRangeToAssertZExt(), llvm::LLVMContext::OB_cfguardtarget, llvm::LLVMContext::OB_convergencectrl, llvm::LLVMContext::OB_kcfi, llvm::LLVMContext::OB_preallocated, llvm::report_fatal_error(), llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setCFIType(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setConvergenceControlToken(), llvm::TargetLowering::CallLoweringInfo::setConvergent(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::TargetLowering::CallLoweringInfo::setIsPreallocated(), llvm::TargetLowering::CallLoweringInfo::setPtrAuth(), llvm::TargetLowering::CallLoweringInfo::setTailCall(), setValue(), llvm::TargetLowering::supportKCFIBundles(), llvm::TargetLowering::supportPtrAuthBundles(), llvm::TargetLowering::supportSwiftError(), and SwiftError.

Referenced by LowerCallSiteWithPtrAuthBundle().

LowerDeoptimizeCall()

void SelectionDAGBuilder::LowerDeoptimizeCall

(

const CallInst *

CI

)

Definition at line 1306 of file StatepointLowering.cpp.

References DAG, and LowerCallSiteWithDeoptBundleImpl().

LowerDeoptimizingReturn()

void SelectionDAGBuilder::LowerDeoptimizingReturn

(

)

Definition at line 1319 of file StatepointLowering.cpp.

References DAG, and getCurSDLoc().

lowerInvokable()

std::pair< SDValue, SDValue > SelectionDAGBuilder::lowerInvokable	(	TargetLowering::CallLoweringInfo &	CLI,
		const BasicBlock *	EHPadBB = nullptr )

Definition at line 8893 of file SelectionDAGBuilder.cpp.

References assert(), llvm::cast_or_null(), llvm::TargetLowering::CallLoweringInfo::CB, DAG, getControlRoot(), getRoot(), HasTailCall, llvm::TargetLowering::CallLoweringInfo::IsTailCall, llvm::TargetLowering::LowerCallTo(), and llvm::TargetLowering::CallLoweringInfo::setChain().

Referenced by LowerCallTo().

lowerRangeToAssertZExt()

SDValue SelectionDAGBuilder::lowerRangeToAssertZExt	(	SelectionDAG &	DAG,
		const Instruction &	I,
		SDValue	Op )

Definition at line 10608 of file SelectionDAGBuilder.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::ISD::AssertZext, DAG, getCurSDLoc(), llvm::EVT::getIntegerVT(), llvm::getRange(), llvm::Hi, I, llvm::Lo, llvm::IntegerType::MIN_INT_BITS, and SL.

Referenced by LowerCallSiteWithDeoptBundleImpl(), and LowerCallTo().

LowerStatepoint()

void SelectionDAGBuilder::LowerStatepoint	(	const GCStatepointInst &	I,
		const BasicBlock *	EHPadBB = nullptr )

Definition at line 1018 of file StatepointLowering.cpp.

References llvm::CallingConv::AnyReg, llvm::ArrayRef(), assert(), llvm::GCStatepointInst::CallArgsBeginPos, DAG, FuncInfo, llvm::RegsForValue::getCopyToRegs(), getCurSDLoc(), getGCResultLocality(), getValue(), GFI, I, llvm::SmallSet< T, N, C >::insert(), isGCValue(), LowerAsSTATEPOINT(), populateCallLoweringInfo(), and setValue().

populateCallLoweringInfo()

void SelectionDAGBuilder::populateCallLoweringInfo	(	TargetLowering::CallLoweringInfo &	CLI,
		const CallBase *	Call,
		unsigned	ArgIdx,
		unsigned	NumArgs,
		SDValue	Callee,
		Type *	ReturnTy,
		AttributeSet	RetAttrs,
		bool	IsPatchPoint )

Populate a CallLowerinInfo (into CLI) based on the properties of the call being lowered.

This is a helper for lowering intrinsics that follow a target calling convention or require stack pointer adjustment. Only a subset of the intrinsic's operands need to participate in the calling convention.

Definition at line 10649 of file SelectionDAGBuilder.cpp.

References assert(), Call, getCurSDLoc(), getRoot(), getValue(), llvm::LLVMContext::OB_preallocated, llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::TargetLowering::CallLoweringInfo::setDiscardResult(), llvm::TargetLowering::CallLoweringInfo::setIsPatchPoint(), and llvm::TargetLowering::CallLoweringInfo::setIsPreallocated().

Referenced by LowerCallSiteWithDeoptBundleImpl(), and LowerStatepoint().

resolveDanglingDebugInfo()

void SelectionDAGBuilder::resolveDanglingDebugInfo	(	const Value *	V,
		SDValue	Val )

If we saw an earlier dbg_value referring to V, generate the debug data structures now that we've seen its definition.

Definition at line 1459 of file SelectionDAGBuilder.cpp.

References assert(), DAG, llvm::dbgs(), DL, llvm::SDValue::dump(), llvm::PoisonValue::get(), llvm::SDNode::getIROrder(), llvm::SDValue::getNode(), LLVM_DEBUG, and Poison.

Referenced by getCopyFromRegs(), getNonRegisterValue(), and getValue().

resolveOrClearDbgInfo()

void SelectionDAGBuilder::resolveOrClearDbgInfo

(

)

Evict any dangling debug information, attempting to salvage it first.

Definition at line 1727 of file SelectionDAGBuilder.cpp.

References clearDanglingDebugInfo(), and salvageUnresolvedDbgValue().

salvageUnresolvedDbgValue()

void SelectionDAGBuilder::salvageUnresolvedDbgValue	(	const Value *	V,
		DanglingDebugInfo &	DDI )

For the given dangling debuginfo record, perform last-ditch efforts to resolve the debuginfo to something that is represented in this DAG.

If this cannot be done, produce an Undef debug value record.

Definition at line 1513 of file SelectionDAGBuilder.cpp.

References AbstractManglingParser< Derived, Alloc >::Ops, llvm::DIExpression::appendOpsToArg(), assert(), llvm::cast(), DAG, llvm::dbgs(), DL, llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::PoisonValue::get(), llvm::DIExpression::getNumLocationOperands(), llvm::Value::getType(), handleDebugValue(), llvm::isa(), LLVM_DEBUG, Poison, and llvm::salvageDebugInfoImpl().

Referenced by dropDanglingDebugInfo(), and resolveOrClearDbgInfo().

setUnusedArgValue()

void llvm::SelectionDAGBuilder::setUnusedArgValue ( const Value * V, SDValue NewN )

inline

Definition at line 381 of file SelectionDAGBuilder.h.

References assert(), and N.

setValue()

void llvm::SelectionDAGBuilder::setValue ( const Value * V, SDValue NewN )

inline

Definition at line 375 of file SelectionDAGBuilder.h.

References assert(), and N.

Referenced by LowerCallSiteWithDeoptBundleImpl(), LowerCallTo(), LowerStatepoint(), and visitSwitchCase().

ShouldEmitAsBranches()

bool SelectionDAGBuilder::ShouldEmitAsBranches

(

const std::vector< SwitchCG::CaseBlock > &

Cases

)

If the set of cases should be emitted as a series of branches, return true.

If we should emit this as a bunch of and/or'd together conditions, return false.

Definition at line 2733 of file SelectionDAGBuilder.cpp.

References llvm::cast(), llvm::isa(), llvm::ISD::SETEQ, and llvm::ISD::SETNE.

shouldKeepJumpConditionsTogether()

bool SelectionDAGBuilder::shouldKeepJumpConditionsTogether	(	const FunctionLoweringInfo &	FuncInfo,
		const BranchInst &	I,
		Instruction::BinaryOps	Opc,
		const Value *	Lhs,
		const Value *	Rhs,
		TargetLoweringBase::CondMergingParams	Params ) const

Definition at line 2488 of file SelectionDAGBuilder.cpp.

References llvm::TargetLoweringBase::CondMergingParams::BaseCost, collectInstructionDeps(), llvm::MapVector< KeyT, ValueT, MapType, VectorType >::contains(), DAG, llvm::dyn_cast(), FuncInfo, llvm::TargetLoweringBase::getTargetMachine(), llvm::TargetMachine::getTargetTransformInfo(), I, llvm::BranchProbabilityInfo::isEdgeHot(), llvm::TargetLoweringBase::CondMergingParams::LikelyBias, llvm::SelectionDAG::MaxRecursionDepth, Opc, llvm::TargetTransformInfo::TCK_Latency, llvm::MapVector< KeyT, ValueT, MapType, VectorType >::try_emplace(), and llvm::TargetLoweringBase::CondMergingParams::UnlikelyBias.

UpdateSplitBlock()

void SelectionDAGBuilder::UpdateSplitBlock	(	MachineBasicBlock *	First,
		MachineBasicBlock *	Last )

When an MBB was split during scheduling, update the references that need to refer to the last resulting block.

Definition at line 3557 of file SelectionDAGBuilder.cpp.

References llvm::First, llvm::Last, llvm::SwitchCG::BitTestBlock::Parent, and SL.

visit() [1/2]

void SelectionDAGBuilder::visit

(

const Instruction &

I

)

Definition at line 1331 of file SelectionDAGBuilder.cpp.

References assert(), CopyToExportRegsIfNeeded(), DAG, llvm::errs(), HasTailCall, I, llvm::isa(), LLVM_DEBUG, visit(), and visitDbgInfo().

Referenced by getValueImpl(), and visit().

visit() [2/2]

void SelectionDAGBuilder::visit	(	unsigned	Opcode,
		const User &	I )

Definition at line 1383 of file SelectionDAGBuilder.cpp.

References I, and llvm_unreachable.

visitBitTestCase()

void SelectionDAGBuilder::visitBitTestCase	(	SwitchCG::BitTestBlock &	BB,
		MachineBasicBlock *	NextMBB,
		BranchProbability	BranchProbToNext,
		Register	Reg,
		SwitchCG::BitTestCase &	B,
		MachineBasicBlock *	SwitchBB )

visitBitTestCase - this function produces one "bit test"

Definition at line 3296 of file SelectionDAGBuilder.cpp.

References llvm::ISD::AND, B(), llvm::countr_one(), llvm::countr_zero(), DAG, getControlRoot(), getCurSDLoc(), llvm::TargetLoweringBase::getSetCCResultType(), llvm::MachineBasicBlock::normalizeSuccProbs(), llvm::popcount(), llvm::SwitchCG::BitTestBlock::Range, llvm::SwitchCG::BitTestBlock::RegVT, llvm::ISD::SETEQ, llvm::ISD::SETNE, and llvm::ISD::SHL.

visitBitTestHeader()

void SelectionDAGBuilder::visitBitTestHeader	(	SwitchCG::BitTestBlock &	B,
		MachineBasicBlock *	SwitchBB )

visitBitTestHeader - This function emits necessary code to produce value suitable for "bit tests"

Definition at line 3234 of file SelectionDAGBuilder.cpp.

References B(), DAG, FuncInfo, getControlRoot(), getCurSDLoc(), llvm::TargetLoweringBase::getPointerTy(), llvm::TargetLoweringBase::getSetCCResultType(), llvm::EVT::getSimpleVT(), llvm::EVT::getSizeInBits(), getValue(), llvm::SDValue::getValueType(), llvm::TargetLoweringBase::isTypeLegal(), llvm::isUIntN(), llvm::SwitchCG::BitTestCase::Mask, MBB, llvm::MachineBasicBlock::normalizeSuccProbs(), llvm::ISD::SETUGT, llvm::ISD::SUB, and llvm::Sub.

visitDbgInfo()

void SelectionDAGBuilder::visitDbgInfo

(

const Instruction &

I

)

Definition at line 1243 of file SelectionDAGBuilder.cpp.

References addDanglingDebugInfo(), llvm::any_of(), assert(), llvm::cast(), DAG, llvm::dbgs(), llvm::DbgVariableRecord::Declare, dropDanglingDebugInfo(), llvm::dyn_cast(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), FuncInfo, llvm::DbgRecord::getDebugLoc(), llvm::DbgVariableRecord::getExpression(), llvm::DbgVariableRecord::getType(), llvm::DbgVariableRecord::getVariable(), llvm::DbgVariableRecord::getVariableLocationOp(), handleDebugDeclare(), handleDebugValue(), handleKillDebugValue(), llvm::DbgVariableRecord::hasArgList(), I, llvm::isa(), LLVM_DEBUG, llvm::DbgVariableRecord::location_ops(), and llvm::SmallVectorTemplateCommon< T, typename >::size().

Referenced by visit().

visitJumpTable()

void SelectionDAGBuilder::visitJumpTable

(

SwitchCG::JumpTable &

JT

)

visitJumpTable - Emit JumpTable node in the current MBB

Definition at line 2964 of file SelectionDAGBuilder.cpp.

References assert(), DAG, and getControlRoot().

visitJumpTableHeader()

void SelectionDAGBuilder::visitJumpTableHeader	(	SwitchCG::JumpTable &	JT,
		SwitchCG::JumpTableHeader &	JTH,
		MachineBasicBlock *	SwitchBB )

visitJumpTableHeader - This function emits necessary code to produce index in the JumpTable from switch case.

Definition at line 2978 of file SelectionDAGBuilder.cpp.

References assert(), DAG, llvm::SwitchCG::JumpTableHeader::FallthroughUnreachable, llvm::SwitchCG::JumpTableHeader::First, FuncInfo, getControlRoot(), llvm::TargetLowering::getJumpTableRegTy(), llvm::TargetLoweringBase::getSetCCResultType(), getValue(), llvm::SDValue::getValueType(), llvm::SwitchCG::JumpTableHeader::Last, llvm::ISD::SETUGT, llvm::ISD::SUB, llvm::Sub, and llvm::SwitchCG::JumpTableHeader::SValue.

visitSPDescriptorFailure()

void SelectionDAGBuilder::visitSPDescriptorFailure

(

StackProtectorDescriptor &

SPD

)

Codegen the failure basic block for a stack protector check.

A failure stack protector machine basic block consists simply of a call to __stack_chk_fail().

For a high level explanation of how this fits into the stack protector generation see the comment on the declaration of class StackProtectorDescriptor.

Definition at line 3162 of file SelectionDAGBuilder.cpp.

References assert(), DAG, DL, llvm::TargetLowering::emitStackGuardXorFP(), llvm::PointerType::get(), getCurSDLoc(), llvm::MachinePointerInfo::getFixedStack(), llvm::TargetLoweringBase::getFrameIndexTy(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::FunctionType::getNumParams(), llvm::FunctionType::getParamType(), llvm::GlobalValue::getParent(), llvm::MachineBasicBlock::getParent(), llvm::StackProtectorDescriptor::getParentMBB(), llvm::TargetLoweringBase::getPointerMemTy(), llvm::FunctionType::getReturnType(), llvm::TargetLoweringBase::getSSPStackGuardCheck(), llvm::MachineFrameInfo::getStackProtectorIndex(), getValue(), llvm::TargetLowering::LowerCallTo(), llvm::TargetLowering::makeLibCall(), llvm::MachineMemOperand::MOVolatile, llvm::TargetOptions::NoTrapAfterNoreturn, llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::TargetLowering::MakeLibCallOptions::setDiscardResult(), llvm::StackProtectorDescriptor::shouldEmitFunctionBasedCheckStackProtector(), llvm::TargetOptions::TrapUnreachable, and llvm::TargetLoweringBase::useStackGuardXorFP().

visitSPDescriptorParent()

void SelectionDAGBuilder::visitSPDescriptorParent	(	StackProtectorDescriptor &	SPD,
		MachineBasicBlock *	ParentBB )

Codegen a new tail for a stack protector check ParentMBB which has had its tail spliced into a stack protector check success bb.

For a high level explanation of how this fits into the stack protector generation see the comment on the declaration of class StackProtectorDescriptor.

Definition at line 3064 of file SelectionDAGBuilder.cpp.

References assert(), DAG, DL, llvm::TargetLowering::emitStackGuardXorFP(), llvm::PointerType::get(), llvm::Function::getCallingConv(), getCurSDLoc(), llvm::StackProtectorDescriptor::getFailureMBB(), llvm::MachinePointerInfo::getFixedStack(), llvm::TargetLoweringBase::getFrameIndexTy(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::Function::getFunctionType(), getLoadStackGuard(), llvm::FunctionType::getNumParams(), llvm::SDValue::getOperand(), llvm::FunctionType::getParamType(), llvm::GlobalValue::getParent(), llvm::MachineBasicBlock::getParent(), llvm::TargetLoweringBase::getPointerMemTy(), llvm::FunctionType::getReturnType(), llvm::TargetLoweringBase::getSDagStackGuard(), llvm::TargetLoweringBase::getSetCCResultType(), llvm::TargetLoweringBase::getSSPStackGuardCheck(), llvm::MachineFrameInfo::getStackProtectorIndex(), llvm::StackProtectorDescriptor::getSuccessMBB(), getValue(), llvm::SDValue::getValueType(), llvm::Function::hasParamAttribute(), llvm::TargetLowering::LowerCallTo(), llvm::MachineMemOperand::MOVolatile, llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::ISD::SETNE, llvm::StackProtectorDescriptor::shouldEmitFunctionBasedCheckStackProtector(), llvm::TargetLowering::useLoadStackGuardNode(), and llvm::TargetLoweringBase::useStackGuardXorFP().

visitSwitchCase()

void SelectionDAGBuilder::visitSwitchCase	(	SwitchCG::CaseBlock &	CB,
		MachineBasicBlock *	SwitchBB )

visitSwitchCase - Emits the necessary code to represent a single node in the binary search tree resulting from lowering a switch instruction.

Definition at line 2868 of file SelectionDAGBuilder.cpp.

References assert(), llvm::cast(), llvm::SwitchCG::CaseBlock::CC, llvm::SwitchCG::CaseBlock::CmpLHS, llvm::SwitchCG::CaseBlock::CmpMHS, llvm::SwitchCG::CaseBlock::CmpRHS, Cond, DAG, llvm::SwitchCG::CaseBlock::DL, llvm::SwitchCG::CaseBlock::FalseBB, llvm::SwitchCG::CaseBlock::FalseProb, getControlRoot(), getCurSDLoc(), llvm::ConstantInt::getFalse(), llvm::TargetLoweringBase::getMemValueType(), llvm::ConstantInt::getTrue(), llvm::Value::getType(), getValue(), llvm::SDValue::getValueType(), High, llvm::SwitchCG::CaseBlock::IsUnpredictable, llvm::Low, llvm::MachineBasicBlock::normalizeSuccProbs(), llvm::ISD::SETEQ, llvm::ISD::SETLE, llvm::ISD::SETTRUE, llvm::ISD::SETULE, llvm::SDNodeFlags::setUnpredictable(), setValue(), llvm::ISD::SUB, std::swap(), llvm::SwitchCG::CaseBlock::TrueBB, llvm::SwitchCG::CaseBlock::TrueProb, and llvm::ISD::XOR.

Member Data Documentation

AC

AssumptionCache* llvm::SelectionDAGBuilder::AC = nullptr

Definition at line 228 of file SelectionDAGBuilder.h.

Referenced by init().

BatchAA

BatchAAResults* llvm::SelectionDAGBuilder::BatchAA = nullptr

Definition at line 227 of file SelectionDAGBuilder.h.

Referenced by init().

ConstantsOut

DenseMap<const Constant *, Register> llvm::SelectionDAGBuilder::ConstantsOut

Definition at line 256 of file SelectionDAGBuilder.h.

Context

LLVMContext* llvm::SelectionDAGBuilder::Context = nullptr

Definition at line 274 of file SelectionDAGBuilder.h.

Referenced by handleKillDebugValue(), and init().

DAG

SelectionDAG& llvm::SelectionDAGBuilder::DAG

Definition at line 226 of file SelectionDAGBuilder.h.

Referenced by addDanglingDebugInfo(), canTailCall(), CopyValueToVirtualRegister(), EmitBranchForMergedCondition(), FindMergedConditions(), getCopyFromRegs(), getFrameIndexTy(), getUniformBase(), getValueImpl(), handleDebugDeclare(), handleDebugValue(), init(), LowerAsSTATEPOINT(), LowerCallSiteWithDeoptBundleImpl(), LowerCallSiteWithPtrAuthBundle(), LowerCallTo(), LowerDeoptimizeCall(), LowerDeoptimizingReturn(), lowerInvokable(), lowerRangeToAssertZExt(), LowerStatepoint(), resolveDanglingDebugInfo(), salvageUnresolvedDbgValue(), SelectionDAGBuilder(), shouldKeepJumpConditionsTogether(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointLoweringInfo(), visit(), visitBitTestCase(), visitBitTestHeader(), visitDbgInfo(), visitJumpTable(), visitJumpTableHeader(), visitSPDescriptorFailure(), visitSPDescriptorParent(), and visitSwitchCase().

FuncInfo

FunctionLoweringInfo& llvm::SelectionDAGBuilder::FuncInfo

Information about the function as a whole.

Definition at line 259 of file SelectionDAGBuilder.h.

Referenced by CopyToExportRegsIfNeeded(), CopyValueToVirtualRegister(), ExportFromCurrentBlock(), getCopyFromRegs(), getValueImpl(), handleDebugValue(), isExportableFromCurrentBlock(), LowerAsSTATEPOINT(), LowerCallTo(), LowerStatepoint(), SelectionDAGBuilder(), shouldKeepJumpConditionsTogether(), visitBitTestHeader(), visitDbgInfo(), and visitJumpTableHeader().

GFI

GCFunctionInfo* llvm::SelectionDAGBuilder::GFI = nullptr

Garbage collection metadata for the function.

Definition at line 265 of file SelectionDAGBuilder.h.

Referenced by init(), LowerAsSTATEPOINT(), and LowerStatepoint().

HasTailCall

bool llvm::SelectionDAGBuilder::HasTailCall = false

This is set to true if a call in the current block has been translated as a tail call.

In this case, no subsequent DAG nodes should be created.

Definition at line 272 of file SelectionDAGBuilder.h.

Referenced by clear(), lowerInvokable(), and visit().

LibInfo

const TargetLibraryInfo* llvm::SelectionDAGBuilder::LibInfo = nullptr

Definition at line 229 of file SelectionDAGBuilder.h.

Referenced by init().

LowestSDNodeOrder

const unsigned llvm::SelectionDAGBuilder::LowestSDNodeOrder = 1

static

Lowest valid SDNodeOrder.

The special case 0 is reserved for scheduling nodes without a corresponding SDNode.

Definition at line 224 of file SelectionDAGBuilder.h.

Referenced by clear(), and SelectionDAGBuilder().

LPadToCallSiteMap

DenseMap<MachineBasicBlock *, SmallVector<unsigned, 4> > llvm::SelectionDAGBuilder::LPadToCallSiteMap

Map a landing pad to the call site indexes.

Definition at line 268 of file SelectionDAGBuilder.h.

Referenced by init().

PendingLoads

SmallVector<SDValue, 8> llvm::SelectionDAGBuilder::PendingLoads

Loads are not emitted to the program immediately.

We bunch them up and then emit token factor nodes when possible. This allows us to get simple disambiguation between loads without worrying about alias analysis.

Definition at line 171 of file SelectionDAGBuilder.h.

Referenced by clear(), getMemoryRoot(), and getRoot().

SL

std::unique_ptr<SDAGSwitchLowering> llvm::SelectionDAGBuilder::SL

Definition at line 248 of file SelectionDAGBuilder.h.

Referenced by EmitBranchForMergedCondition(), init(), lowerRangeToAssertZExt(), SelectionDAGBuilder(), and UpdateSplitBlock().

SPDescriptor

StackProtectorDescriptor llvm::SelectionDAGBuilder::SPDescriptor

A StackProtectorDescriptor structure used to communicate stack protector information in between SelectBasicBlock and FinishBasicBlock.

Definition at line 252 of file SelectionDAGBuilder.h.

StatepointLowering

StatepointLoweringState llvm::SelectionDAGBuilder::StatepointLowering

State used while lowering a statepoint sequence (gc_statepoint, gc_relocate, and gc_result).

See StatepointLowering.hpp/cpp for details.

Definition at line 175 of file SelectionDAGBuilder.h.

Referenced by clear(), and LowerAsSTATEPOINT().

SwiftError

SwiftErrorValueTracking& llvm::SelectionDAGBuilder::SwiftError

Information about the swifterror values used throughout the function.

Definition at line 262 of file SelectionDAGBuilder.h.

Referenced by LowerCallTo(), and SelectionDAGBuilder().

---

The documentation for this class was generated from the following files:

• lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
• lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
• lib/CodeGen/SelectionDAG/StatepointLowering.cpp