LLVM  4.0.0
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 <SelectionDAGBuilder.h>

Collaboration diagram for llvm::SelectionDAGBuilder:
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Classes

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, CodeGenOpt::Level ol)
 
void init (GCFunctionInfo *gfi, AliasAnalysis &aa, const TargetLibraryInfo *li)
 
void clear ()
 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 ()
 clearDanglingDebugInfo - Clear the dangling debug information map. More...
 
SDValue getRoot ()
 getRoot - Return the current virtual root of the Selection DAG, flushing any PendingLoad items. More...
 
SDValue getControlRoot ()
 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)
 getCopyFromRegs - If there was virtual register allocated for the value V emit CopyFromReg of the specified type Ty. More...
 
void resolveDanglingDebugInfo (const Value *V, SDValue Val)
 
SDValue getValue (const Value *V)
 getValue - Return an SDValue for the given Value. More...
 
bool findValue (const Value *V) const
 
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 TW, BranchProbability FW)
 FindMergedConditions - If Cond is an expression like. More...
 
void EmitBranchForMergedCondition (const Value *Cond, MachineBasicBlock *TBB, MachineBasicBlock *FBB, MachineBasicBlock *CurBB, MachineBasicBlock *SwitchBB, BranchProbability TW, BranchProbability FW)
 EmitBranchForMergedCondition - Helper method for FindMergedConditions. More...
 
bool ShouldEmitAsBranches (const std::vector< 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, ImmutableCallSite CS, 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)
 UpdateSplitBlock - When an MBB was split during scheduling, update the references that need to refer to the last resulting block. More...
 
SDValue LowerAsSTATEPOINT (StatepointLoweringInfo &SLI)
 Lower SLI into a STATEPOINT instruction. More...
 
void LowerStatepoint (ImmutableStatepoint Statepoint, const BasicBlock *EHPadBB=nullptr)
 
void LowerCallSiteWithDeoptBundle (ImmutableCallSite CS, SDValue Callee, const BasicBlock *EHPadBB)
 
void LowerDeoptimizeCall (const CallInst *CI)
 
void LowerDeoptimizingReturn ()
 
void LowerCallSiteWithDeoptBundleImpl (ImmutableCallSite CS, SDValue Callee, const BasicBlock *EHPadBB, bool VarArgDisallowed, bool ForceVoidReturnTy)
 
void visitSwitchCase (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 (BitTestBlock &B, MachineBasicBlock *SwitchBB)
 visitBitTestHeader - This function emits necessary code to produce value suitable for "bit tests" More...
 
void visitBitTestCase (BitTestBlock &BB, MachineBasicBlock *NextMBB, BranchProbability BranchProbToNext, unsigned Reg, BitTestCase &B, MachineBasicBlock *SwitchBB)
 visitBitTestCase - this function produces one "bit test" More...
 
void visitJumpTable (JumpTable &JT)
 visitJumpTable - Emit JumpTable node in the current MBB More...
 
void visitJumpTableHeader (JumpTable &JT, 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
 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
 
AliasAnalysisAA
 
const TargetLibraryInfoLibInfo
 
std::vector< CaseBlock > SwitchCases
 SwitchCases - Vector of CaseBlock structures used to communicate SwitchInst code generation information. More...
 
std::vector< JumpTableBlock > JTCases
 JTCases - Vector of JumpTable structures used to communicate SwitchInst code generation information. More...
 
std::vector< BitTestBlock > BitTestCases
 BitTestCases - Vector of BitTestBlock structures used to communicate SwitchInst code generation information. More...
 
StackProtectorDescriptor SPDescriptor
 A StackProtectorDescriptor structure used to communicate stack protector information in between SelectBasicBlock and FinishBasicBlock. More...
 
DenseMap< const Constant
*, unsigned
ConstantsOut
 
FunctionLoweringInfoFuncInfo
 FuncInfo - Information about the function as a whole. More...
 
GCFunctionInfoGFI
 GFI - Garbage collection metadata for the function. More...
 
DenseMap< MachineBasicBlock
*, SmallVector< unsigned, 4 > > 
LPadToCallSiteMap
 LPadToCallSiteMap - Map a landing pad to the call site indexes. More...
 
bool HasTailCall
 HasTailCall - 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 87 of file SelectionDAGBuilder.h.

Constructor & Destructor Documentation

llvm::SelectionDAGBuilder::SelectionDAGBuilder ( SelectionDAG dag,
FunctionLoweringInfo funcinfo,
CodeGenOpt::Level  ol 
)
inline

Definition at line 609 of file SelectionDAGBuilder.h.

Member Function Documentation

void SelectionDAGBuilder::clear ( )

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 859 of file SelectionDAGBuilder.cpp.

References llvm::StatepointLoweringState::clear(), HasTailCall, LowestSDNodeOrder, PendingLoads, and StatepointLowering.

void SelectionDAGBuilder::clearDanglingDebugInfo ( )

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 876 of file SelectionDAGBuilder.cpp.

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 1486 of file SelectionDAGBuilder.cpp.

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

Referenced by visit().

void SelectionDAGBuilder::CopyValueToVirtualRegister ( const Value V,
unsigned  Reg 
)
void SelectionDAGBuilder::EmitBranchForMergedCondition ( const Value Cond,
MachineBasicBlock TBB,
MachineBasicBlock FBB,
MachineBasicBlock CurBB,
MachineBasicBlock SwitchBB,
BranchProbability  TProb,
BranchProbability  FProb 
)

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 1579 of file SelectionDAGBuilder.cpp.

References DAG, R600_InstFlag::FC, llvm::MachineBasicBlock::getBasicBlock(), llvm::SelectionDAG::getContext(), llvm::getFCmpCodeWithoutNaN(), llvm::getFCmpCondCode(), llvm::getICmpCondCode(), llvm::CmpInst::getPredicate(), llvm::ConstantInt::getTrue(), isExportableFromCurrentBlock(), llvm::ISD::SETEQ, SwitchCases, and llvm::SystemZISD::TM.

Referenced by FindMergedConditions().

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 1501 of file SelectionDAGBuilder.cpp.

References CopyValueToVirtualRegister(), FuncInfo, llvm::FunctionLoweringInfo::InitializeRegForValue(), and llvm::FunctionLoweringInfo::isExportedInst().

Referenced by lowerStatepointMetaArgs().

void SelectionDAGBuilder::FindMergedConditions ( const Value Cond,
MachineBasicBlock TBB,
MachineBasicBlock FBB,
MachineBasicBlock CurBB,
MachineBasicBlock SwitchBB,
Instruction::BinaryOps  Opc,
BranchProbability  TW,
BranchProbability  FW 
)
bool SelectionDAGBuilder::findValue ( const Value V) const
SDValue SelectionDAGBuilder::getControlRoot ( )

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 908 of file SelectionDAGBuilder.cpp.

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

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

SDValue SelectionDAGBuilder::getCopyFromRegs ( const Value V,
Type Ty 
)
DebugLoc llvm::SelectionDAGBuilder::getCurDebugLoc ( ) const
inline
SDLoc llvm::SelectionDAGBuilder::getCurSDLoc ( ) const
inline
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 1042 of file SelectionDAGBuilder.cpp.

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

Referenced by CopyValueToVirtualRegister().

SDValue SelectionDAGBuilder::getRoot ( )

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 885 of file SelectionDAGBuilder.cpp.

References DAG, getCurSDLoc(), llvm::SelectionDAG::getNode(), llvm::SelectionDAG::getRoot(), llvm::MVT::Other, PendingLoads, llvm::SelectionDAG::setRoot(), and llvm::ISD::TokenFactor.

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

SDValue SelectionDAGBuilder::getValue ( const Value V)
SDValue SelectionDAGBuilder::getValueImpl ( const Value V)
void SelectionDAGBuilder::init ( GCFunctionInfo gfi,
AliasAnalysis aa,
const TargetLibraryInfo li 
)
bool SelectionDAGBuilder::isExportableFromCurrentBlock ( const Value V,
const BasicBlock FromBB 
)
SDValue SelectionDAGBuilder::LowerAsSTATEPOINT ( SelectionDAGBuilder::StatepointLoweringInfo SI)

Lower SLI into a STATEPOINT instruction.

Definition at line 569 of file StatepointLowering.cpp.

References assert(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::Bases, llvm::TargetLowering::CallLoweringInfo::CallConv, llvm::SelectionDAGBuilder::StatepointLoweringInfo::CLI, DAG, llvm::SelectionDAG::DeleteNode(), llvm::SmallVectorTemplateCommon< T >::end(), fuzzer::Flags, FuncInfo, llvm::ISD::GC_TRANSITION_END, llvm::ISD::GC_TRANSITION_START, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCRelocates, llvm::GCTransition, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCTransitionArgs, getCurSDLoc(), llvm::SDNode::getGluedNode(), llvm::SelectionDAG::getMachineNode(), llvm::SDValue::getNode(), llvm::SelectionDAG::getNode(), llvm::SDNode::getNumOperands(), llvm::SDNode::getOperand(), llvm::Instruction::getParent(), getRoot(), llvm::SelectionDAG::getSrcValue(), llvm::SelectionDAG::getTargetConstant(), llvm::Value::getType(), llvm::SDValue::getValue(), getValue(), llvm::SelectionDAG::getVTList(), 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, isPodLike< T >::value >::push_back(), pushStackMapConstant(), removeDuplicateGCPtrs(), llvm::SelectionDAG::ReplaceAllUsesWith(), llvm::StatepointLoweringState::scheduleRelocCall(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::StatepointLoweringState::startNewStatepoint(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointFlags, llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointInstr, StatepointLowering, and llvm::FunctionLoweringInfo::StatepointSpillMaps.

Referenced by LowerCallSiteWithDeoptBundleImpl(), and LowerStatepoint().

void SelectionDAGBuilder::LowerCallSiteWithDeoptBundle ( ImmutableCallSite  CS,
SDValue  Callee,
const BasicBlock EHPadBB 
)

Definition at line 891 of file StatepointLowering.cpp.

References LowerCallSiteWithDeoptBundleImpl().

void SelectionDAGBuilder::LowerCallSiteWithDeoptBundleImpl ( ImmutableCallSite  CS,
SDValue  Callee,
const BasicBlock EHPadBB,
bool  VarArgDisallowed,
bool  ForceVoidReturnTy 
)

Definition at line 857 of file StatepointLowering.cpp.

References llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::arg_begin(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::CLI, DAG, llvm::StatepointDirectives::DeoptBundleStatepointID, llvm::SelectionDAGBuilder::StatepointLoweringInfo::DeoptState, llvm::SelectionDAGBuilder::StatepointLoweringInfo::EHPadBB, llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getAttributes(), llvm::SelectionDAG::getContext(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getFunctionType(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getInstruction(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getNumArgOperands(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getOperandBundle(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getType(), llvm::Type::getVoidTy(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::ID, llvm::FunctionType::isVarArg(), llvm::TargetLowering::CallLoweringInfo::IsVarArg, LowerAsSTATEPOINT(), lowerRangeToAssertZExt(), llvm::None, llvm::SelectionDAGBuilder::StatepointLoweringInfo::NumPatchBytes, llvm::LLVMContext::OB_deopt, llvm::User::op_begin(), llvm::parseStatepointDirectivesFromAttrs(), populateCallLoweringInfo(), setValue(), SI, and llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointFlags.

Referenced by LowerCallSiteWithDeoptBundle(), and LowerDeoptimizeCall().

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

Definition at line 5822 of file SelectionDAGBuilder.cpp.

References llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::arg_begin(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::arg_end(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::arg_size(), AMDGPU::RuntimeMD::KeyName::Args, llvm::MachineRegisterInfo::createVirtualRegister(), DAG, llvm::TargetLowering::CallLoweringInfo::DAG, llvm::TargetLowering::CallLoweringInfo::DL, FuncInfo, llvm::SelectionDAG::getCopyToReg(), getCurSDLoc(), llvm::SelectionDAG::getDataLayout(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getFunctionType(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getInstruction(), llvm::FunctionLoweringInfo::getOrCreateSwiftErrorVReg(), llvm::Instruction::getParent(), llvm::BasicBlock::getParent(), llvm::TargetLoweringBase::getPointerTy(), llvm::TargetLoweringBase::getRegClassFor(), llvm::MachineFunction::getRegInfo(), llvm::SelectionDAG::getRegister(), getRoot(), llvm::SelectionDAG::getTarget(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::Value::getType(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getType(), getValue(), i, llvm::TargetLowering::CallLoweringInfo::InVals, llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::isConvergent(), llvm::Type::isEmptyTy(), llvm::isInTailCallPosition(), llvm::TargetLowering::ArgListEntry::isSRet, llvm::TargetLowering::ArgListEntry::isSwiftError, lowerInvokable(), lowerRangeToAssertZExt(), llvm::FunctionLoweringInfo::MBB, llvm::FunctionLoweringInfo::MF, llvm::TargetLowering::ArgListEntry::Node, llvm::TargetLowering::ArgListEntry::setAttributes(), llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setConvergent(), llvm::FunctionLoweringInfo::setCurrentSwiftErrorVReg(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::SelectionDAG::setRoot(), llvm::TargetLowering::CallLoweringInfo::setTailCall(), setValue(), llvm::TargetLowering::supportSwiftError(), and llvm::TargetLowering::ArgListEntry::Ty.

void SelectionDAGBuilder::LowerDeoptimizeCall ( const CallInst CI)
void SelectionDAGBuilder::LowerDeoptimizingReturn ( )
std::pair< SDValue, SDValue > SelectionDAGBuilder::lowerInvokable ( TargetLowering::CallLoweringInfo CLI,
const BasicBlock EHPadBB = nullptr 
)
SDValue SelectionDAGBuilder::lowerRangeToAssertZExt ( SelectionDAG DAG,
const Instruction I,
SDValue  Op 
)
void SelectionDAGBuilder::LowerStatepoint ( ImmutableStatepoint  Statepoint,
const BasicBlock EHPadBB = nullptr 
)

Definition at line 765 of file StatepointLowering.cpp.

References llvm::CallingConv::AnyReg, assert(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::Bases, llvm::StatepointBase< const Function, const Instruction, const Value, ImmutableCallSite >::CallArgsBeginPos, llvm::SelectionDAGBuilder::StatepointLoweringInfo::CLI, llvm::FunctionLoweringInfo::CreateRegs(), DAG, llvm::SelectionDAGBuilder::StatepointLoweringInfo::DeoptState, DL, llvm::SelectionDAGBuilder::StatepointLoweringInfo::EHPadBB, FuncInfo, llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::gc_args_begin(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::gc_args_end(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCArgs, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCRelocates, llvm::SelectionDAGBuilder::StatepointLoweringInfo::GCTransitionArgs, llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getActualReturnType(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getCalledValue(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getCallingConv(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getCallSite(), llvm::SelectionDAG::getConstant(), llvm::SelectionDAG::getContext(), getCurSDLoc(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getEntryNode(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getFlags(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getGCResult(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getID(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getInstruction(), llvm::SelectionDAG::getIntPtrConstant(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getNumCallArgs(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getNumPatchBytes(), llvm::Instruction::getParent(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getParent(), llvm::Type::getPointerAddressSpace(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::getRelocates(), llvm::GCFunctionInfo::getStrategy(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::Value::getType(), getValue(), GFI, llvm::SelectionDAGBuilder::StatepointLoweringInfo::ID, llvm::Type::isVoidTy(), LowerAsSTATEPOINT(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::NumPatchBytes, populateCallLoweringInfo(), llvm::SelectionDAGBuilder::StatepointLoweringInfo::Ptrs, setValue(), SI, llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointFlags, llvm::SelectionDAGBuilder::StatepointLoweringInfo::StatepointInstr, llvm::GCStrategy::useStatepoints(), llvm::FunctionLoweringInfo::ValueMap, llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::verify(), llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::vm_state_begin(), and llvm::StatepointBase< FunTy, InstructionTy, ValueTy, CallSiteTy >::vm_state_end().

void SelectionDAGBuilder::populateCallLoweringInfo ( TargetLowering::CallLoweringInfo CLI,
ImmutableCallSite  CS,
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 7355 of file SelectionDAGBuilder.cpp.

References AMDGPU::RuntimeMD::KeyName::Args, assert(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getCallingConv(), getCurSDLoc(), getRoot(), llvm::Value::getType(), getValue(), llvm::Type::isEmptyTy(), llvm::TargetLowering::ArgListEntry::Node, llvm::TargetLowering::CallLoweringInfo::setCallee(), llvm::TargetLowering::CallLoweringInfo::setChain(), and llvm::TargetLowering::CallLoweringInfo::setDebugLoc().

Referenced by LowerCallSiteWithDeoptBundleImpl(), and LowerStatepoint().

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

Definition at line 681 of file SelectionDAGBuilder.h.

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

void llvm::SelectionDAGBuilder::setValue ( const Value V,
SDValue  NewN 
)
inline
bool SelectionDAGBuilder::ShouldEmitAsBranches ( const std::vector< 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 1720 of file SelectionDAGBuilder.cpp.

References llvm::ISD::SETEQ, and llvm::ISD::SETNE.

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

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

Definition at line 2376 of file SelectionDAGBuilder.cpp.

References BitTestCases, i, and JTCases.

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

Definition at line 957 of file SelectionDAGBuilder.cpp.

References llvm_unreachable.

void SelectionDAGBuilder::visitBitTestCase ( BitTestBlock &  BB,
MachineBasicBlock NextMBB,
BranchProbability  BranchProbToNext,
unsigned  Reg,
BitTestCase &  B,
MachineBasicBlock SwitchBB 
)
void SelectionDAGBuilder::visitBitTestHeader ( BitTestBlock &  B,
MachineBasicBlock SwitchBB 
)
void SelectionDAGBuilder::visitJumpTable ( JumpTable &  JT)
void SelectionDAGBuilder::visitJumpTableHeader ( JumpTable &  JT,
JumpTableHeader &  JTH,
MachineBasicBlock SwitchBB 
)
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 2089 of file SelectionDAGBuilder.cpp.

References DAG, getCurSDLoc(), llvm::SelectionDAG::getTargetLoweringInfo(), llvm::MVT::isVoid, llvm::TargetLowering::makeLibCall(), llvm::None, llvm::SelectionDAG::setRoot(), and llvm::RTLIB::STACKPROTECTOR_CHECK_FAIL.

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 1994 of file SelectionDAGBuilder.cpp.

References AMDGPU::RuntimeMD::KeyName::Args, assert(), llvm::ISD::BR, llvm::ISD::BRCOND, DAG, DL, llvm::SelectionDAG::getBasicBlock(), llvm::SelectionDAG::getConstant(), llvm::Module::getContext(), llvm::SelectionDAG::getContext(), getCurSDLoc(), llvm::SelectionDAG::getDataLayout(), llvm::SelectionDAG::getEntryNode(), llvm::MachinePointerInfo::getFixedStack(), llvm::SelectionDAG::getFrameIndex(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::Type::getInt8PtrTy(), llvm::SelectionDAG::getLoad(), getLoadStackGuard(), llvm::SelectionDAG::getMachineFunction(), llvm::SelectionDAG::getNode(), llvm::SDValue::getOperand(), llvm::MachineBasicBlock::getParent(), llvm::GlobalValue::getParent(), llvm::TargetLoweringBase::getPointerTy(), llvm::DataLayout::getPrefTypeAlignment(), llvm::TargetLoweringBase::getSDagStackGuard(), llvm::SelectionDAG::getSetCC(), llvm::TargetLoweringBase::getSetCCResultType(), llvm::TargetLoweringBase::getSSPStackGuardCheck(), llvm::MachineFrameInfo::getStackProtectorIndex(), llvm::SelectionDAG::getTargetLoweringInfo(), getValue(), llvm::SDValue::getValueType(), llvm::TargetLowering::ArgListEntry::isInReg, llvm::TargetLowering::LowerCallTo(), llvm::MachineMemOperand::MOVolatile, llvm::TargetLowering::ArgListEntry::Node, llvm::MVT::Other, llvm::TargetLowering::CallLoweringInfo::setChain(), llvm::TargetLowering::CallLoweringInfo::setDebugLoc(), llvm::ISD::SETNE, llvm::SelectionDAG::setRoot(), llvm::ISD::SUB, llvm::TargetLowering::ArgListEntry::Ty, and llvm::TargetLowering::useLoadStackGuardNode().

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

Member Data Documentation

AliasAnalysis* llvm::SelectionDAGBuilder::AA

Definition at line 571 of file SelectionDAGBuilder.h.

Referenced by getMemCmpLoad(), and init().

std::vector<BitTestBlock> llvm::SelectionDAGBuilder::BitTestCases

BitTestCases - Vector of BitTestBlock structures used to communicate SwitchInst code generation information.

Definition at line 582 of file SelectionDAGBuilder.h.

Referenced by UpdateSplitBlock().

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

Definition at line 589 of file SelectionDAGBuilder.h.

LLVMContext* llvm::SelectionDAGBuilder::Context

Definition at line 607 of file SelectionDAGBuilder.h.

Referenced by init().

SelectionDAG& llvm::SelectionDAGBuilder::DAG
const DataLayout* llvm::SelectionDAGBuilder::DL
FunctionLoweringInfo& llvm::SelectionDAGBuilder::FuncInfo
GCFunctionInfo* llvm::SelectionDAGBuilder::GFI

GFI - Garbage collection metadata for the function.

Definition at line 596 of file SelectionDAGBuilder.h.

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

bool llvm::SelectionDAGBuilder::HasTailCall

HasTailCall - 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 605 of file SelectionDAGBuilder.h.

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

std::vector<JumpTableBlock> llvm::SelectionDAGBuilder::JTCases

JTCases - Vector of JumpTable structures used to communicate SwitchInst code generation information.

Definition at line 579 of file SelectionDAGBuilder.h.

Referenced by UpdateSplitBlock().

const TargetLibraryInfo* llvm::SelectionDAGBuilder::LibInfo

Definition at line 572 of file SelectionDAGBuilder.h.

Referenced by init().

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 567 of file SelectionDAGBuilder.h.

Referenced by clear().

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

LPadToCallSiteMap - Map a landing pad to the call site indexes.

Definition at line 599 of file SelectionDAGBuilder.h.

Referenced by init(), and lowerInvokable().

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

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 120 of file SelectionDAGBuilder.h.

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

StackProtectorDescriptor llvm::SelectionDAGBuilder::SPDescriptor

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

Definition at line 585 of file SelectionDAGBuilder.h.

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 124 of file SelectionDAGBuilder.h.

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

std::vector<CaseBlock> llvm::SelectionDAGBuilder::SwitchCases

SwitchCases - Vector of CaseBlock structures used to communicate SwitchInst code generation information.

Definition at line 576 of file SelectionDAGBuilder.h.

Referenced by EmitBranchForMergedCondition().


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