LLVM  10.0.0svn
Classes | Public Member Functions | Public Attributes | Static Public Attributes | List of all members
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"

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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, CodeGenOpt::Level ol)
 
void init (GCFunctionInfo *gfi, AliasAnalysis *AA, 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. More...
 
void clearDanglingDebugInfo ()
 Clear the dangling debug information map. More...
 
SDValue getRoot ()
 Return the current virtual root of the Selection DAG, flushing any PendingLoad items. More...
 
SDValue getControlRoot ()
 Similar to getRoot, but instead of flushing all the PendingLoad items, flush all the PendingExports items. More...
 
SDLoc getCurSDLoc () const
 
DebugLoc getCurDebugLoc () const
 
void CopyValueToVirtualRegister (const Value *V, unsigned Reg)
 
void visit (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. More...
 
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. More...
 
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. More...
 
void salvageUnresolvedDbgValue (DanglingDebugInfo &DDI)
 For the given dangling debuginfo record, perform last-ditch efforts to resolve the debuginfo to something that is represented in this DAG. More...
 
bool handleDebugValue (const Value *V, DILocalVariable *Var, DIExpression *Expr, DebugLoc CurDL, DebugLoc InstDL, unsigned Order)
 For a given Value, attempt to create and record a SDDbgValue in the SelectionDAG. More...
 
void resolveOrClearDbgInfo ()
 Evict any dangling debug information, attempting to salvage it first. More...
 
SDValue getValue (const Value *V)
 getValue - Return an SDValue for the given Value. More...
 
bool findValue (const Value *V) const
 
SDNodegetNodeForIRValue (const Value *V)
 Return the SDNode for the specified IR value if it exists. More...
 
SDValue getNonRegisterValue (const Value *V)
 getNonRegisterValue - Return an SDValue for the given Value, but don't look in FuncInfo.ValueMap for a virtual register. More...
 
SDValue getValueImpl (const Value *V)
 getValueImpl - Helper function for getValue and getNonRegisterValue. More...
 
void setValue (const Value *V, SDValue NewN)
 
void setUnusedArgValue (const Value *V, SDValue NewN)
 
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. More...
 
bool ShouldEmitAsBranches (const std::vector< SwitchCG::CaseBlock > &Cases)
 If the set of cases should be emitted as a series of branches, return true. More...
 
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. More...
 
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. More...
 
void LowerCallTo (ImmutableCallSite CS, SDValue Callee, bool IsTailCall, const BasicBlock *EHPadBB=nullptr)
 
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, bool IsPatchPoint)
 Populate a CallLowerinInfo (into CLI) based on the properties of the call being lowered. More...
 
std::pair< SDValue, SDValuelowerInvokable (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. More...
 
SDValue LowerAsSTATEPOINT (StatepointLoweringInfo &SI)
 Lower SLI into a STATEPOINT instruction. More...
 
void LowerStatepoint (ImmutableStatepoint ISP, 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)
 
MVT getFrameIndexTy ()
 Returns the type of FrameIndex and TargetFrameIndex nodes. More...
 
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. More...
 
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. More...
 
void visitSPDescriptorFailure (StackProtectorDescriptor &SPD)
 Codegen the failure basic block for a stack protector check. More...
 
void visitBitTestHeader (SwitchCG::BitTestBlock &B, MachineBasicBlock *SwitchBB)
 visitBitTestHeader - This function emits necessary code to produce value suitable for "bit tests" More...
 
void visitBitTestCase (SwitchCG::BitTestBlock &BB, MachineBasicBlock *NextMBB, BranchProbability BranchProbToNext, unsigned Reg, SwitchCG::BitTestCase &B, MachineBasicBlock *SwitchBB)
 visitBitTestCase - this function produces one "bit test" More...
 
void visitJumpTable (SwitchCG::JumpTable &JT)
 visitJumpTable - Emit JumpTable node in the current MBB More...
 
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. More...
 

Public Attributes

SmallVector< SDValue, 8 > PendingLoads
 Loads are not emitted to the program immediately. More...
 
StatepointLoweringState StatepointLowering
 State used while lowering a statepoint sequence (gc_statepoint, gc_relocate, and gc_result). More...
 
SelectionDAGDAG
 
const DataLayoutDL = nullptr
 
AliasAnalysisAA = nullptr
 
const TargetLibraryInfoLibInfo
 
std::unique_ptr< SDAGSwitchLoweringSL
 
StackProtectorDescriptor SPDescriptor
 A StackProtectorDescriptor structure used to communicate stack protector information in between SelectBasicBlock and FinishBasicBlock. More...
 
DenseMap< const Constant *, unsignedConstantsOut
 
FunctionLoweringInfoFuncInfo
 Information about the function as a whole. More...
 
SwiftErrorValueTrackingSwiftError
 Information about the swifterror values used throughout the function. More...
 
GCFunctionInfoGFI
 Garbage collection metadata for the function. More...
 
DenseMap< MachineBasicBlock *, SmallVector< unsigned, 4 > > LPadToCallSiteMap
 Map a landing pad to the call site indexes. More...
 
bool HasTailCall = false
 This is set to true if a call in the current block has been translated as a tail call. More...
 
LLVMContextContext
 

Static Public Attributes

static const unsigned LowestSDNodeOrder = 1
 Lowest valid SDNodeOrder. More...
 

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,
CodeGenOpt::Level  ol 
)
inline

Member Function Documentation

◆ 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 1019 of file SelectionDAGBuilder.cpp.

Referenced by processDbgDeclares(), and SelectionDAGBuilder().

◆ 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 1030 of file SelectionDAGBuilder.cpp.

Referenced by SelectionDAGBuilder().

◆ 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 1931 of file SelectionDAGBuilder.cpp.

References assert(), llvm::DenseMapBase< DenseMap< KeyT, ValueT, KeyInfoT, BucketT >, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::Value::getType(), llvm::Type::isEmptyTy(), and llvm::Value::use_empty().

◆ CopyValueToVirtualRegister()

void SelectionDAGBuilder::CopyValueToVirtualRegister ( const Value V,
unsigned  Reg 
)

◆ 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 1131 of file SelectionDAGBuilder.cpp.

References llvm::dbgs(), llvm::DIExpression::fragmentsOverlap(), llvm::DbgVariableIntrinsic::getExpression(), llvm::DbgVariableIntrinsic::getVariable(), LLVM_DEBUG, and llvm::remove_if().

Referenced by getCurDebugLoc().

◆ 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 2022 of file SelectionDAGBuilder.cpp.

◆ 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 1946 of file SelectionDAGBuilder.cpp.

References Reg.

Referenced by lowerStatepointMetaArgs().

◆ 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 2069 of file SelectionDAGBuilder.cpp.

Referenced by setUnusedArgValue().

◆ findValue()

bool SelectionDAGBuilder::findValue ( const Value V) const

Definition at line 1410 of file SelectionDAGBuilder.cpp.

Referenced by getCurDebugLoc(), and getUniformBase().

◆ getControlRoot()

SDValue SelectionDAGBuilder::getControlRoot ( )

Similar to getRoot, but instead of flushing all the PendingLoad items, flush all the PendingExports items.

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

Definition at line 1052 of file SelectionDAGBuilder.cpp.

References assert(), llvm::ISD::EntryToken, llvm::SelectionDAG::getNode(), llvm::SDValue::getOpcode(), llvm::SelectionDAG::getRoot(), llvm::MVT::Other, llvm::SelectionDAG::setRoot(), and llvm::ISD::TokenFactor.

Referenced by processDbgDeclares(), and SelectionDAGBuilder().

◆ 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 1370 of file SelectionDAGBuilder.cpp.

References llvm::DenseMapBase< DenseMap< KeyT, ValueT, KeyInfoT, BucketT >, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getEntryNode(), llvm::SelectionDAG::getTargetLoweringInfo(), and llvm::None.

Referenced by llvm::RegsForValue::append(), and getCurDebugLoc().

◆ getCurDebugLoc()

DebugLoc llvm::SelectionDAGBuilder::getCurDebugLoc ( ) const
inline

◆ getCurSDLoc()

SDLoc llvm::SelectionDAGBuilder::getCurSDLoc ( ) const
inline

◆ getFrameIndexTy()

MVT llvm::SelectionDAGBuilder::getFrameIndexTy ( )
inline

◆ getNodeForIRValue()

SDNode* llvm::SelectionDAGBuilder::getNodeForIRValue ( const Value V)
inline

◆ 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 1417 of file SelectionDAGBuilder.cpp.

References llvm::SDValue::getNode(), N, and llvm::SDNode::setDebugLoc().

Referenced by getNodeForIRValue().

◆ getRoot()

SDValue SelectionDAGBuilder::getRoot ( )

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

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

Definition at line 1034 of file SelectionDAGBuilder.cpp.

References llvm::SelectionDAG::getRoot(), llvm::SelectionDAG::getTokenFactor(), and llvm::SelectionDAG::setRoot().

Referenced by lowerIncomingStatepointValue(), and SelectionDAGBuilder().

◆ getValue()

SDValue SelectionDAGBuilder::getValue ( const Value V)

◆ getValueImpl()

SDValue SelectionDAGBuilder::getValueImpl ( const Value V)

getValueImpl - Helper function for getValue and getNonRegisterValue.

Create an SDValue for the given value.

Definition at line 1440 of file SelectionDAGBuilder.cpp.

References llvm::MachineBasicBlock::addSuccessor(), assert(), llvm::SmallVectorImpl< T >::assign(), llvm::ISD::BR, C, llvm::ISD::CATCHPAD, llvm::ISD::CATCHRET, llvm::classifyEHPersonality(), llvm::ComputeValueVTs(), llvm::CoreCLR, getABIRegCopyCC(), llvm::SelectionDAG::getBasicBlock(), llvm::SelectionDAG::getBlockAddress(), llvm::SelectionDAG::getBuildVector(), llvm::CatchReturnInst::getCatchSwitchParentPad(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getConstantFP(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getDataLayout(), llvm::SequentialType::getElementType(), llvm::SelectionDAG::getEntryNode(), llvm::SelectionDAG::getFrameIndex(), llvm::TargetLoweringBase::getFrameIndexTy(), llvm::SelectionDAG::getGlobalAddress(), llvm::SelectionDAG::getMergeValues(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SequentialType::getNumElements(), llvm::SDNode::getNumValues(), getParent(), llvm::Type::getPointerAddressSpace(), llvm::TargetLoweringBase::getPointerTy(), llvm::CatchReturnInst::getSuccessor(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::Value::getType(), llvm::SelectionDAG::getUNDEF(), llvm::TargetLoweringBase::getValueType(), I, llvm::Type::isAggregateType(), llvm::Type::isArrayTy(), llvm::isAsynchronousEHPersonality(), llvm::EVT::isFloatingPoint(), llvm::Type::isStructTy(), llvm_unreachable, llvm::MSVC_CXX, llvm::CodeGenOpt::None, llvm::User::op_begin(), llvm::User::op_end(), llvm::MVT::Other, llvm::SmallVectorTemplateBase< T >::push_back(), llvm::MipsISD::Ret, llvm::MachineBasicBlock::setIsEHFuncletEntry(), llvm::MachineBasicBlock::setIsEHScopeEntry(), llvm::SelectionDAG::setRoot(), SI, llvm::SmallVectorBase::size(), llvm::SystemZISD::TM, llvm::RegsForValue::ValueVTs, and llvm::Wasm_CXX.

Referenced by getNodeForIRValue().

◆ handleDebugValue()

bool SelectionDAGBuilder::handleDebugValue ( const Value V,
DILocalVariable Var,
DIExpression Expr,
DebugLoc  CurDL,
DebugLoc  InstDL,
unsigned  Order 
)

◆ init()

void SelectionDAGBuilder::init ( GCFunctionInfo gfi,
AliasAnalysis AA,
const TargetLibraryInfo li 
)

◆ isExportableFromCurrentBlock()

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

◆ LowerAsSTATEPOINT()

SDValue SelectionDAGBuilder::LowerAsSTATEPOINT ( SelectionDAGBuilder::StatepointLoweringInfo SI)

Lower SLI into a STATEPOINT instruction.

Definition at line 634 of file StatepointLowering.cpp.

References assert(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::Bases, llvm::TargetLowering::CallLoweringInfo::CallConv, llvm::SelectionDAGBuilder::StatepointLoweringInfo::CLI, llvm::SmallVectorTemplateCommon< T >::end(), llvm::ISD::GC_TRANSITION_END, llvm::ISD::GC_TRANSITION_START, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCRelocates, llvm::GCTransition, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCTransitionArgs, llvm::SDNode::getGluedNode(), llvm::SDValue::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getOperand(), llvm::Instruction::getParent(), llvm::Value::getType(), llvm::SDValue::getValue(), llvm::MVT::Glue, llvm::MVT::i32, llvm::MVT::i64, llvm::SelectionDAGBuilder::StatepointLoweringInfo::ID, llvm::SmallVectorImpl< T >::insert(), llvm::Type::isPointerTy(), lowerCallFromStatepointLoweringInfo(), lowerStatepointMetaArgs(), llvm::MaskAll, llvm::SelectionDAGBuilder::StatepointLoweringInfo::NumPatchBytes, llvm::SDNode::op_begin(), llvm::SDNode::op_end(), llvm::MVT::Other, llvm::SelectionDAGBuilder::StatepointLoweringInfo::Ptrs, llvm::SmallVectorTemplateBase< T >::push_back(), pushStackMapConstant(), removeDuplicateGCPtrs(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointFlags, and llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointInstr.

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

◆ LowerCallSiteWithDeoptBundle()

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

◆ LowerCallSiteWithDeoptBundleImpl()

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

◆ LowerCallTo()

void SelectionDAGBuilder::LowerCallTo ( ImmutableCallSite  CS,
SDValue  Callee,
bool  IsTailCall,
const BasicBlock EHPadBB = nullptr 
)

◆ LowerDeoptimizeCall()

void SelectionDAGBuilder::LowerDeoptimizeCall ( const CallInst CI)

◆ LowerDeoptimizingReturn()

void SelectionDAGBuilder::LowerDeoptimizingReturn ( )

◆ lowerInvokable()

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

◆ lowerRangeToAssertZExt()

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

◆ LowerStatepoint()

void SelectionDAGBuilder::LowerStatepoint ( ImmutableStatepoint  ISP,
const BasicBlock EHPadBB = nullptr 
)

Definition at line 832 of file StatepointLowering.cpp.

References llvm::CallingConv::AnyReg, assert(), llvm::StatepointBase< const Function, const Instruction, const Value, const CallBase >::CallArgsBeginPos, llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::deopt_begin(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::deopt_end(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::gc_args_begin(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::gc_args_end(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getActualReturnType(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getCall(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getCalledValue(), llvm::CallBase::getCallingConv(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getFlags(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getGCResult(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getID(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getInstruction(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getNumCallArgs(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getNumPatchBytes(), llvm::Instruction::getParent(), llvm::Type::getPointerAddressSpace(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::getRelocates(), llvm::Value::getType(), llvm::Type::isVoidTy(), Reg, SI, and llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallBaseTy >::verify().

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

◆ populateCallLoweringInfo()

void SelectionDAGBuilder::populateCallLoweringInfo ( TargetLowering::CallLoweringInfo CLI,
const CallBase Call,
unsigned  ArgIdx,
unsigned  NumArgs,
SDValue  Callee,
Type ReturnTy,
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 8640 of file SelectionDAGBuilder.cpp.

References llvm::AMDGPU::HSAMD::Kernel::Key::Args, assert(), llvm::User::getOperand(), llvm::Value::getType(), and llvm::Type::isEmptyTy().

◆ resolveDanglingDebugInfo()

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

◆ resolveOrClearDbgInfo()

void SelectionDAGBuilder::resolveOrClearDbgInfo ( )

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

Definition at line 1360 of file SelectionDAGBuilder.cpp.

Referenced by getCurDebugLoc().

◆ salvageUnresolvedDbgValue()

void SelectionDAGBuilder::salvageUnresolvedDbgValue ( 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 1213 of file SelectionDAGBuilder.cpp.

References llvm::SelectionDAG::AddDbgValue(), assert(), llvm::dbgs(), llvm::UndefValue::get(), llvm::SelectionDAG::getConstantDbgValue(), llvm::User::getOperand(), LLVM_DEBUG, llvm::salvageDebugInfoImpl(), and llvm::RegState::Undef.

Referenced by getCurDebugLoc().

◆ setUnusedArgValue()

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

Definition at line 519 of file SelectionDAGBuilder.h.

References assert(), FindMergedConditions(), llvm::SDValue::getNode(), and N.

◆ setValue()

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

Definition at line 513 of file SelectionDAGBuilder.h.

References assert(), llvm::SDValue::getNode(), and N.

◆ ShouldEmitAsBranches()

bool SelectionDAGBuilder::ShouldEmitAsBranches ( const std::vector< SwitchCG::CaseBlock > &  Cases)

◆ 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 2902 of file SelectionDAGBuilder.cpp.

◆ visit() [1/2]

void SelectionDAGBuilder::visit ( const Instruction I)

◆ visit() [2/2]

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

Definition at line 1119 of file SelectionDAGBuilder.cpp.

References llvm_unreachable.

◆ visitBitTestCase()

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

visitBitTestCase - this function produces one "bit test"

Definition at line 2676 of file SelectionDAGBuilder.cpp.

References llvm::ISD::AND, assert(), llvm::ISD::BR, llvm::ISD::BRCOND, Callee, llvm::ComputeValueVTs(), llvm::CallBase::countOperandBundlesOfType(), llvm::countPopulation(), llvm::countTrailingOnes(), llvm::countTrailingZeros(), llvm::dyn_cast(), findUnwindDestinations(), llvm::MachineBasicBlock::getBasicBlock(), llvm::SelectionDAG::getBasicBlock(), llvm::CallBase::getCalledValue(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getContext(), llvm::SelectionDAG::getCopyFromReg(), llvm::SelectionDAG::getDataLayout(), llvm::CallBrInst::getDefaultDest(), llvm::BranchProbabilityInfo::getEdgeProbability(), llvm::SelectionDAG::getEntryNode(), llvm::CallBrInst::getIndirectDest(), llvm::SelectionDAG::getNode(), llvm::CallBrInst::getNumIndirectDests(), llvm::TargetLoweringBase::getPointerTy(), llvm::SelectionDAG::getSetCC(), llvm::TargetLoweringBase::getSetCCResultType(), llvm::InvokeInst::getSuccessor(), llvm::SelectionDAG::getTargetConstant(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::Value::getType(), llvm::SelectionDAG::getVTList(), llvm::BranchProbability::getZero(), llvm::SelectionDAG::getZExtOrTrunc(), llvm::CallBase::hasOperandBundlesOtherThan(), llvm::ISD::INTRINSIC_VOID, llvm::isStatepoint(), llvm::Type::isTokenTy(), llvm_unreachable, llvm::ISD::MERGE_VALUES, llvm::MachineBasicBlock::normalizeSuccProbs(), llvm::LLVMContext::OB_deopt, llvm::MVT::Other, llvm::SmallVectorTemplateBase< T >::push_back(), llvm::MCID::Return, llvm::ISD::SETEQ, llvm::ISD::SETNE, llvm::SelectionDAG::setRoot(), llvm::ISD::SHL, llvm::SmallVectorBase::size(), and llvm::RegsForValue::ValueVTs.

Referenced by getFrameIndexTy().

◆ visitBitTestHeader()

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

◆ visitJumpTable()

void SelectionDAGBuilder::visitJumpTable ( SwitchCG::JumpTable JT)

◆ visitJumpTableHeader()

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

◆ 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 2600 of file SelectionDAGBuilder.cpp.

References llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::MVT::isVoid, llvm::TargetLowering::makeLibCall(), llvm::None, llvm::MVT::Other, llvm::TargetLowering::MakeLibCallOptions::setDiscardResult(), llvm::SelectionDAG::setRoot(), llvm::SystemZISD::TM, and llvm::ISD::TRAP.

Referenced by getFrameIndexTy().

◆ visitSPDescriptorParent()

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

◆ 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 2310 of file SelectionDAGBuilder.cpp.

Referenced by getFrameIndexTy().

Member Data Documentation

◆ AA

AliasAnalysis* llvm::SelectionDAGBuilder::AA = nullptr

Definition at line 380 of file SelectionDAGBuilder.h.

Referenced by getMemCmpLoad().

◆ ConstantsOut

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

Definition at line 406 of file SelectionDAGBuilder.h.

◆ Context

LLVMContext* llvm::SelectionDAGBuilder::Context

Definition at line 424 of file SelectionDAGBuilder.h.

◆ DAG

SelectionDAG& llvm::SelectionDAGBuilder::DAG

◆ DL

const DataLayout* llvm::SelectionDAGBuilder::DL = nullptr

Definition at line 379 of file SelectionDAGBuilder.h.

Referenced by getMemCmpLoad().

◆ FuncInfo

FunctionLoweringInfo& llvm::SelectionDAGBuilder::FuncInfo

◆ GFI

GCFunctionInfo* llvm::SelectionDAGBuilder::GFI

Garbage collection metadata for the function.

Definition at line 415 of file SelectionDAGBuilder.h.

Referenced by lowerStatepointMetaArgs().

◆ 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 422 of file SelectionDAGBuilder.h.

◆ LibInfo

const TargetLibraryInfo* llvm::SelectionDAGBuilder::LibInfo

Definition at line 381 of file SelectionDAGBuilder.h.

◆ 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 376 of file SelectionDAGBuilder.h.

◆ LPadToCallSiteMap

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

Map a landing pad to the call site indexes.

Definition at line 418 of file SelectionDAGBuilder.h.

Referenced by mapWasmLandingPadIndex().

◆ 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 133 of file SelectionDAGBuilder.h.

Referenced by getMemCmpLoad().

◆ SL

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

Definition at line 398 of file SelectionDAGBuilder.h.

◆ SPDescriptor

StackProtectorDescriptor llvm::SelectionDAGBuilder::SPDescriptor

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

Definition at line 402 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 137 of file SelectionDAGBuilder.h.

Referenced by lowerStatepointMetaArgs(), reservePreviousStackSlotForValue(), and spillIncomingStatepointValue().

◆ SwiftError

SwiftErrorValueTracking& llvm::SelectionDAGBuilder::SwiftError

Information about the swifterror values used throughout the function.

Definition at line 412 of file SelectionDAGBuilder.h.


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