CoroFrame.cpp File Reference

#include "CoroInternal.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Analysis/StackLifetime.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/OptimizedStructLayout.h"
#include "llvm/Transforms/Coroutines/ABI.h"
#include "llvm/Transforms/Coroutines/CoroInstr.h"
#include "llvm/Transforms/Coroutines/MaterializationUtils.h"
#include "llvm/Transforms/Coroutines/SpillUtils.h"
#include "llvm/Transforms/Coroutines/SuspendCrossingInfo.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"
#include "llvm/Transforms/Utils/PromoteMemToReg.h"
#include <algorithm>
#include <optional>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "coro-frame"

Functions
static void	dumpSpills (StringRef Title, const coro::SpillInfo &Spills)
static void	dumpAllocas (const SmallVectorImpl< coro::AllocaInfo > &Allocas)
static void	cacheDIVar (FrameDataInfo &FrameData, DenseMap< Value *, DILocalVariable * > &DIVarCache)
static StringRef	solveTypeName (Type *Ty)
	Create name for Type.
static DIType *	solveDIType (DIBuilder &Builder, Type *Ty, const DataLayout &Layout, DIScope *Scope, unsigned LineNum, DenseMap< Type *, DIType * > &DITypeCache)
static void	buildFrameDebugInfo (Function &F, coro::Shape &Shape, FrameDataInfo &FrameData)
	Build artificial debug info for C++ coroutine frames to allow users to inspect the contents of the frame directly.
static StructType *	buildFrameType (Function &F, coro::Shape &Shape, FrameDataInfo &FrameData, bool OptimizeFrame)
static void	insertSpills (const FrameDataInfo &FrameData, coro::Shape &Shape)
static void	movePHIValuesToInsertedBlock (BasicBlock *SuccBB, BasicBlock *InsertedBB, BasicBlock *PredBB, PHINode *UntilPHI=nullptr)
static void	rewritePHIsForCleanupPad (BasicBlock *CleanupPadBB, CleanupPadInst *CleanupPad)
static void	cleanupSinglePredPHIs (Function &F)
static void	rewritePHIs (BasicBlock &BB)
static void	rewritePHIs (Function &F)
static BasicBlock *	splitBlockIfNotFirst (Instruction *I, const Twine &Name)
static void	splitAround (Instruction *I, const Twine &Name)
static bool	willLeaveFunctionImmediatelyAfter (BasicBlock *BB, unsigned depth=3)
	After we split the coroutine, will the given basic block be along an obvious exit path for the resumption function?
static bool	localAllocaNeedsStackSave (CoroAllocaAllocInst *AI)
static void	lowerLocalAllocas (ArrayRef< CoroAllocaAllocInst * > LocalAllocas, SmallVectorImpl< Instruction * > &DeadInsts)
	Turn each of the given local allocas into a normal (dynamic) alloca instruction.
static Value *	emitGetSwiftErrorValue (IRBuilder<> &Builder, Type *ValueTy, coro::Shape &Shape)
	Get the current swifterror value.
static Value *	emitSetSwiftErrorValue (IRBuilder<> &Builder, Value *V, coro::Shape &Shape)
	Set the given value as the current swifterror value.
static Value *	emitSetAndGetSwiftErrorValueAround (Instruction *Call, AllocaInst *Alloca, coro::Shape &Shape)
	Set the swifterror value from the given alloca before a call, then put in back in the alloca afterwards.
static void	eliminateSwiftErrorAlloca (Function &F, AllocaInst *Alloca, coro::Shape &Shape)
	Eliminate a formerly-swifterror alloca by inserting the get/set intrinsics and attempting to MemToReg the alloca away.
static void	eliminateSwiftErrorArgument (Function &F, Argument &Arg, coro::Shape &Shape, SmallVectorImpl< AllocaInst * > &AllocasToPromote)
	"Eliminate" a swifterror argument by reducing it to the alloca case and then loading and storing in the prologue and epilog.
static void	eliminateSwiftError (Function &F, coro::Shape &Shape)
	Eliminate all problematic uses of swifterror arguments and allocas from the function.
static void	sinkLifetimeStartMarkers (Function &F, coro::Shape &Shape, SuspendCrossingInfo &Checker, const DominatorTree &DT)
	For each local variable that all of its user are only used inside one of suspended region, we sink their lifetime.start markers to the place where after the suspend block.
static std::optional< std::pair< Value &, DIExpression & > >	salvageDebugInfoImpl (SmallDenseMap< Argument *, AllocaInst *, 4 > &ArgToAllocaMap, bool UseEntryValue, Function *F, Value *Storage, DIExpression *Expr, bool SkipOutermostLoad)

Variables
cl::opt< bool >	UseNewDbgInfoFormat

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "coro-frame"

Definition at line 46 of file CoroFrame.cpp.

Function Documentation

buildFrameDebugInfo()

static void buildFrameDebugInfo ( Function &  F, coro::Shape &  Shape, FrameDataInfo &  FrameData  )

static

Build artificial debug info for C++ coroutine frames to allow users to inspect the contents of the frame directly.

Create Debug information for coroutine frame with debug name "__coro_frame". The debug information for the fields of coroutine frame is constructed from the following way:

1. For all the value in the Frame, we search the use of dbg.declare to find the corresponding debug variables for the value. If we can find the debug variable, we can get full and accurate debug information.
2. If we can't get debug information in step 1 and 2, we could only try to build the DIType by Type. We did this in solveDIType. We only handle integer, float, double, integer type and struct type for now.

FIXME: If we fill the field SizeInBits with the actual size of __coro_index in bits, then __coro_index wouldn't show in the debugger.

Definition at line 689 of file CoroFrame.cpp.

References llvm::coro::Shape::ABI, assert(), cacheDIVar(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::contains(), llvm::DIBuilder::createAutoVariable(), llvm::DIBuilder::createBasicType(), llvm::DIBuilder::createExpression(), llvm::DIBuilder::createMemberType(), llvm::DIBuilder::createPointerType(), llvm::DIBuilder::createStructType(), llvm::coro::Shape::SwitchFieldIndex::Destroy, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), F, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::coro::Shape::FrameAlign, llvm::coro::Shape::FramePtr, llvm::coro::Shape::FrameSize, llvm::coro::Shape::FrameTy, llvm::MDTuple::get(), llvm::ValueAsMetadata::get(), llvm::MDNode::getContext(), llvm::StructType::getElementType(), llvm::DIScope::getFile(), llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::getFixedValue(), llvm::coro::Shape::getInsertPtAfterFramePtr(), llvm::DIType::getName(), llvm::StructType::getNumElements(), llvm::DIBuilder::getOrCreateArray(), llvm::coro::Shape::getPromiseAlloca(), llvm::DataLayout::getTypeSizeInBits(), llvm::coro::Shape::SwitchLoweringStorage::IndexAlign, llvm::coro::Shape::SwitchLoweringStorage::IndexField, llvm::coro::Shape::SwitchLoweringStorage::IndexOffset, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::dwarf::isCPlusPlus(), llvm::Type::isSized(), Name, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::DIBuilder::replaceArrays(), llvm::MDNode::replaceOperandWith(), llvm::coro::Shape::SwitchFieldIndex::Resume, solveDIType(), llvm::StringRef::str(), llvm::Twine::str(), llvm::coro::Shape::SwitchLowering, UseNewDbgInfoFormat, llvm::Align::value(), and value.

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

buildFrameType()

static StructType * buildFrameType ( Function &  F, coro::Shape &  Shape, FrameDataInfo &  FrameData, bool  OptimizeFrame  )

static

Definition at line 865 of file CoroFrame.cpp.

References A, llvm::coro::Shape::ABI, llvm::alignTo(), assert(), llvm::coro::Shape::AsyncLowering, B, llvm::CallingConv::C, llvm::coro::Shape::AsyncLoweringStorage::ContextHeaderSize, llvm::coro::Shape::AsyncLoweringStorage::ContextSize, llvm::coro::Shape::CoroSuspends, DL, F, llvm::coro::Shape::FrameAlign, llvm::coro::Shape::AsyncLoweringStorage::FrameOffset, llvm::coro::Shape::FrameSize, llvm::coro::Shape::AsyncLoweringStorage::getContextAlignment(), llvm::Type::getIntNTy(), llvm::coro::Shape::getPromiseAlloca(), llvm::coro::Shape::getRetconCoroId(), llvm::coro::Shape::SwitchLoweringStorage::IndexAlign, llvm::coro::Shape::SwitchLoweringStorage::IndexField, llvm::coro::Shape::SwitchLoweringStorage::IndexOffset, llvm::coro::Shape::RetconLoweringStorage::IsFrameInlineInStorage, llvm::Log2_64_Ceil(), Name, llvm::report_fatal_error(), llvm::coro::Shape::RetconLowering, and llvm::coro::Shape::SwitchLowering.

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

cacheDIVar()

static void cacheDIVar ( FrameDataInfo &  FrameData, DenseMap< Value *, DILocalVariable * > &  DIVarCache  )

static

Definition at line 544 of file CoroFrame.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::contains(), llvm::find_if(), llvm::findDbgDeclares(), llvm::findDVRDeclares(), getNumElements(), I, and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert().

Referenced by buildFrameDebugInfo().

cleanupSinglePredPHIs()

static void cleanupSinglePredPHIs ( Function &  F )

static

Definition at line 1410 of file CoroFrame.cpp.

References llvm::SmallVectorBase< Size_T >::empty(), F, llvm::SmallVectorImpl< T >::pop_back_val(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().

Referenced by llvm::coro::normalizeCoroutine().

dumpAllocas()

static void dumpAllocas ( const SmallVectorImpl< coro::AllocaInfo > &  Allocas )

static

Definition at line 150 of file CoroFrame.cpp.

References A, and llvm::dbgs().

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

dumpSpills()

static void dumpSpills ( StringRef  Title, const coro::SpillInfo &  Spills  )

static

Definition at line 140 of file CoroFrame.cpp.

References llvm::dbgs(), and I.

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

eliminateSwiftError()

static void eliminateSwiftError ( Function &  F, coro::Shape &  Shape  )

static

Eliminate all problematic uses of swifterror arguments and allocas from the function.

We'll fix them up later when splitting the function.

Definition at line 1734 of file CoroFrame.cpp.

References eliminateSwiftErrorAlloca(), eliminateSwiftErrorArgument(), llvm::SmallVectorBase< Size_T >::empty(), F, llvm::AllocaInst::isSwiftError(), llvm::PromoteMemToReg(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::AllocaInst::setSwiftError().

Referenced by llvm::coro::normalizeCoroutine().

eliminateSwiftErrorAlloca()

static void eliminateSwiftErrorAlloca ( Function &  F, AllocaInst *  Alloca, coro::Shape &  Shape  )

static

Eliminate a formerly-swifterror alloca by inserting the get/set intrinsics and attempting to MemToReg the alloca away.

Definition at line 1671 of file CoroFrame.cpp.

References Addr, assert(), emitSetAndGetSwiftErrorValueAround(), llvm::Use::getUser(), llvm::isAllocaPromotable(), llvm::make_early_inc_range(), llvm::Use::set(), and llvm::Value::uses().

Referenced by eliminateSwiftError(), and eliminateSwiftErrorArgument().

eliminateSwiftErrorArgument()

static void eliminateSwiftErrorArgument ( Function &  F, Argument &  Arg, coro::Shape &  Shape, SmallVectorImpl< AllocaInst * > &  AllocasToPromote  )

static

"Eliminate" a swifterror argument by reducing it to the alloca case and then loading and storing in the prologue and epilog.

The argument keeps the swifterror flag.

Definition at line 1697 of file CoroFrame.cpp.

References llvm::coro::Shape::CoroEnds, llvm::coro::Shape::CoroSuspends, llvm::IRBuilderBase::CreateAlloca(), llvm::IRBuilderBase::CreateLoad(), llvm::IRBuilderBase::CreateStore(), eliminateSwiftErrorAlloca(), emitSetAndGetSwiftErrorValueAround(), emitSetSwiftErrorValue(), End, F, llvm::Constant::getNullValue(), llvm::Value::getType(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::Value::replaceAllUsesWith(), and llvm::IRBuilderBase::SetInsertPoint().

Referenced by eliminateSwiftError().

emitGetSwiftErrorValue()

static Value * emitGetSwiftErrorValue ( IRBuilder<> &  Builder, Type *  ValueTy, coro::Shape &  Shape  )

static

Get the current swifterror value.

Definition at line 1608 of file CoroFrame.cpp.

References llvm::IRBuilderBase::CreateCall(), llvm::ConstantPointerNull::get(), llvm::IRBuilderBase::getPtrTy(), and llvm::coro::Shape::SwiftErrorOps.

Referenced by emitSetAndGetSwiftErrorValueAround().

emitSetAndGetSwiftErrorValueAround()

static Value * emitSetAndGetSwiftErrorValueAround ( Instruction *  Call, AllocaInst *  Alloca, coro::Shape &  Shape  )

static

Set the swifterror value from the given alloca before a call, then put in back in the alloca afterwards.

Returns an address that will stand in for the swifterror slot until splitting.

Definition at line 1641 of file CoroFrame.cpp.

References Addr, llvm::IRBuilderBase::CreateLoad(), llvm::IRBuilderBase::CreateStore(), emitGetSwiftErrorValue(), emitSetSwiftErrorValue(), llvm::AllocaInst::getAllocatedType(), and llvm::IRBuilderBase::SetInsertPoint().

Referenced by eliminateSwiftErrorAlloca(), and eliminateSwiftErrorArgument().

emitSetSwiftErrorValue()

static Value * emitSetSwiftErrorValue ( IRBuilder<> &  Builder, Value *  V, coro::Shape &  Shape  )

static

Set the given value as the current swifterror value.

Returns a slot that can be used as a swifterror slot.

Definition at line 1623 of file CoroFrame.cpp.

References llvm::IRBuilderBase::CreateCall(), llvm::ConstantPointerNull::get(), llvm::IRBuilderBase::getPtrTy(), and llvm::coro::Shape::SwiftErrorOps.

Referenced by eliminateSwiftErrorArgument(), and emitSetAndGetSwiftErrorValueAround().

insertSpills()

static void insertSpills ( const FrameDataInfo &  FrameData, coro::Shape &  Shape  )

static

Definition at line 1004 of file CoroFrame.cpp.

References A, llvm::coro::Shape::ABI, llvm::coro::Shape::AllocaSpillBlock, llvm::any_of(), assert(), llvm::BasicBlock::begin(), llvm::CallingConv::C, llvm::SmallVectorImpl< T >::clear(), llvm::coro::Shape::CoroBegin, llvm::IRBuilderBase::CreateAdd(), llvm::IRBuilderBase::CreateAddrSpaceCast(), llvm::IRBuilderBase::CreateAlignedLoad(), llvm::IRBuilderBase::CreateAlignedStore(), llvm::IRBuilderBase::CreateAnd(), llvm::IRBuilderBase::CreateConstInBoundsGEP2_32(), llvm::IRBuilderBase::CreateInBoundsGEP(), llvm::IRBuilderBase::CreateIntToPtr(), llvm::IRBuilderBase::CreateLoad(), llvm::IRBuilderBase::CreateNot(), llvm::IRBuilderBase::CreatePtrAdd(), llvm::IRBuilderBase::CreatePtrToInt(), llvm::IRBuilderBase::CreateStore(), llvm::DominatorTree::dominates(), llvm::SmallVectorBase< Size_T >::empty(), llvm::TinyPtrVector< EltTy >::empty(), llvm::Instruction::eraseFromParent(), F, llvm::filterDbgVars(), llvm::findDbgDeclares(), llvm::findDbgUsers(), llvm::findDVRDeclares(), llvm::for_each(), llvm::coro::Shape::FramePtr, FramePtr, llvm::coro::Shape::FrameTy, G, GEP, llvm::IntegerType::get(), llvm::ValueAsMetadata::get(), llvm::AllocaInst::getAlign(), llvm::AllocaInst::getAllocatedType(), llvm::AllocaInst::getArraySize(), llvm::Value::getContext(), llvm::StructType::getElementType(), llvm::BasicBlock::getFirstInsertionPt(), llvm::Instruction::getFunction(), llvm::IRBuilderBase::GetInsertPoint(), llvm::coro::Shape::getInsertPtAfterFramePtr(), llvm::Type::getInt32Ty(), llvm::Instruction::getModule(), llvm::Value::getName(), llvm::GlobalValue::getParent(), llvm::BasicBlock::getParent(), llvm::coro::getSpillInsertionPt(), llvm::AllocaInst::getType(), I, llvm::AllocaInst::isArrayAllocation(), P, llvm::coro::Shape::SwitchLoweringStorage::PromiseAlloca, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::Value::replaceAllUsesWith(), llvm::Value::replaceUsesWithIf(), llvm::report_fatal_error(), llvm::coro::salvageDebugInfo(), llvm::IRBuilderBase::SetInsertPoint(), llvm::BasicBlock::splitBasicBlock(), llvm::coro::Shape::SwitchLowering, UseNewDbgInfoFormat, llvm::Value::users(), llvm::Value::uses(), and llvm::Align::value().

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

localAllocaNeedsStackSave()

static bool localAllocaNeedsStackSave ( CoroAllocaAllocInst *  AI )

static

Definition at line 1552 of file CoroFrame.cpp.

References llvm::Value::users(), and willLeaveFunctionImmediatelyAfter().

Referenced by lowerLocalAllocas().

lowerLocalAllocas()

static void lowerLocalAllocas ( ArrayRef< CoroAllocaAllocInst * >  LocalAllocas, SmallVectorImpl< Instruction * > &  DeadInsts  )

static

Turn each of the given local allocas into a normal (dynamic) alloca instruction.

Definition at line 1570 of file CoroFrame.cpp.

References llvm::IRBuilderBase::CreateAlloca(), llvm::IRBuilderBase::CreateStackRestore(), llvm::IRBuilderBase::CreateStackSave(), llvm::IRBuilderBase::getInt8Ty(), localAllocaNeedsStackSave(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::AllocaInst::setAlignment(), llvm::IRBuilderBase::SetInsertPoint(), and llvm::Value::users().

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

movePHIValuesToInsertedBlock()

static void movePHIValuesToInsertedBlock ( BasicBlock *  SuccBB, BasicBlock *  InsertedBB, BasicBlock *  PredBB, PHINode *  UntilPHI = nullptr  )

static

Definition at line 1317 of file CoroFrame.cpp.

References llvm::PHINode::addIncoming(), llvm::BasicBlock::begin(), llvm::PHINode::Create(), llvm::BasicBlock::front(), llvm::Value::getName(), and llvm::Instruction::insertBefore().

Referenced by rewritePHIs(), and rewritePHIsForCleanupPad().

rewritePHIs() [1/2]

static void rewritePHIs ( BasicBlock &  BB )

static

Definition at line 1427 of file CoroFrame.cpp.

References assert(), llvm::PHINode::Create(), llvm::ehAwareSplitEdge(), llvm::Instruction::eraseFromParent(), llvm::BasicBlock::getFirstNonPHI(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::Value::getName(), llvm::Value::getType(), llvm::Instruction::insertBefore(), movePHIValuesToInsertedBlock(), llvm::predecessors(), llvm::Value::replaceAllUsesWith(), rewritePHIsForCleanupPad(), and llvm::Value::takeName().

Referenced by llvm::coro::normalizeCoroutine(), and rewritePHIs().

rewritePHIs() [2/2]

static void rewritePHIs ( Function &  F )

static

Definition at line 1498 of file CoroFrame.cpp.

References F, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and rewritePHIs().

rewritePHIsForCleanupPad()

static void rewritePHIsForCleanupPad ( BasicBlock *  CleanupPadBB, CleanupPadInst *  CleanupPad  )

static

Definition at line 1335 of file CoroFrame.cpp.

References llvm::BasicBlock::Create(), llvm::IRBuilderBase::CreateBr(), llvm::IRBuilderBase::CreatePHI(), llvm::IRBuilderBase::CreateSwitch(), llvm::IRBuilderBase::CreateUnreachable(), llvm::BasicBlock::getContext(), llvm::IRBuilderBase::getInt8Ty(), llvm::Value::getName(), llvm::BasicBlock::getParent(), llvm::Instruction::insertAfter(), movePHIValuesToInsertedBlock(), llvm::pred_size(), llvm::predecessors(), llvm::Instruction::removeFromParent(), llvm::IRBuilderBase::SetInsertPoint(), llvm::setUnwindEdgeTo(), and llvm::updatePhiNodes().

Referenced by rewritePHIs().

salvageDebugInfoImpl()

static std::optional< std::pair< Value &, DIExpression & > > salvageDebugInfoImpl ( SmallDenseMap< Argument *, AllocaInst *, 4 > &  ArgToAllocaMap, bool  UseEntryValue, Function *  F, Value *  Storage, DIExpression *  Expr, bool  SkipOutermostLoad  )

static

Definition at line 1849 of file CoroFrame.cpp.

References llvm::DIExpression::appendOpsToArg(), llvm::IRBuilderBase::CreateAlloca(), llvm::IRBuilderBase::CreateStore(), llvm::DIExpression::DerefBefore, llvm::SmallVectorBase< Size_T >::empty(), llvm::DIExpression::EntryValue, F, llvm::DIExpression::foldConstantMath(), llvm::Value::getName(), llvm::DIExpression::getNumLocationOperands(), llvm::Value::getType(), llvm::DIExpression::isEntryValue(), llvm::DIExpression::isSingleLocationExpression(), llvm::DIExpression::prepend(), llvm::salvageDebugInfoImpl(), and llvm::IRBuilderBase::SetInsertPoint().

Referenced by llvm::coro::salvageDebugInfo().

sinkLifetimeStartMarkers()

static void sinkLifetimeStartMarkers ( Function &  F, coro::Shape &  Shape, SuspendCrossingInfo &  Checker, const DominatorTree &  DT  )

static

For each local variable that all of its user are only used inside one of suspended region, we sink their lifetime.start markers to the place where after the suspend block.

Doing so minimizes the lifetime of each variable, hence minimizing the amount of data we end up putting on the frame.

Definition at line 1769 of file CoroFrame.cpp.

References assert(), llvm::coro::Shape::CoroSuspends, llvm::DominatorTree::dominates(), F, llvm::ilist_detail::node_parent_access< NodeTy, ParentTy >::getParent(), llvm::BasicBlock::getParent(), llvm::BasicBlock::getSingleSuccessor(), I, II, llvm::SmallPtrSetImpl< PtrType >::insert(), instructions, llvm::SuspendCrossingInfo::isDefinitionAcrossSuspend(), isLifetimeStart(), llvm::coro::isSuspendBlock(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and llvm::Value::users().

Referenced by llvm::coro::BaseABI::buildCoroutineFrame().

solveDIType()

static DIType * solveDIType ( DIBuilder &  Builder, Type *  Ty, const DataLayout &  Layout, DIScope *  Scope, unsigned  LineNum, DenseMap< Type *, DIType * > &  DITypeCache  )

static

Definition at line 602 of file CoroFrame.cpp.

References assert(), llvm::BitWidth, llvm::DIBuilder::createArrayType(), llvm::DIBuilder::createBasicType(), llvm::DIBuilder::createMemberType(), llvm::DIBuilder::createPointerType(), llvm::DIBuilder::createStructType(), llvm::dbgs(), llvm::DataLayout::getABITypeAlign(), llvm::DIType::getAlignInBits(), llvm::StructLayout::getElementOffsetInBits(), llvm::TypeSize::getFixed(), llvm::DIType::getName(), llvm::DIBuilder::getOrCreateArray(), llvm::DIBuilder::getOrCreateSubrange(), llvm::DataLayout::getPrefTypeAlign(), llvm::DIType::getSizeInBits(), llvm::DataLayout::getStructLayout(), llvm::DataLayout::getTypeSizeInBits(), I, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::Type::isFloatingPointTy(), llvm::Type::isIntegerTy(), llvm::Type::isPointerTy(), llvm::Type::isStructTy(), LLVM_DEBUG, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::lookup(), Name, llvm::DIBuilder::replaceArrays(), Size, solveDIType(), solveTypeName(), and llvm::Align::value().

Referenced by buildFrameDebugInfo(), and solveDIType().

solveTypeName()

static StringRef solveTypeName ( Type *  Ty )

static

Create name for Type.

It uses MDString to store new created string to avoid memory leak.

Definition at line 564 of file CoroFrame.cpp.

References llvm::MDString::get(), llvm::Type::getContext(), llvm::Type::getStructName(), llvm::Type::isDoubleTy(), llvm::Type::isFloatingPointTy(), llvm::Type::isFloatTy(), llvm::Type::isIntegerTy(), llvm::Type::isPointerTy(), llvm::Type::isStructTy(), Name, OS, and llvm::SmallString< InternalLen >::str().

Referenced by solveDIType().

splitAround()

static void splitAround ( Instruction *  I, const Twine &  Name  )

static

Definition at line 1525 of file CoroFrame.cpp.

References I, Name, and splitBlockIfNotFirst().

Referenced by llvm::coro::normalizeCoroutine().

splitBlockIfNotFirst()

static BasicBlock * splitBlockIfNotFirst ( Instruction *  I, const Twine &  Name  )

static

Definition at line 1512 of file CoroFrame.cpp.

References I, and Name.

Referenced by splitAround().

willLeaveFunctionImmediatelyAfter()

static bool willLeaveFunctionImmediatelyAfter ( BasicBlock *  BB, unsigned  depth = 3  )

static

After we split the coroutine, will the given basic block be along an obvious exit path for the resumption function?

Definition at line 1532 of file CoroFrame.cpp.

References llvm::coro::isSuspendBlock(), llvm::successors(), and willLeaveFunctionImmediatelyAfter().

Referenced by localAllocaNeedsStackSave(), and willLeaveFunctionImmediatelyAfter().

Variable Documentation

UseNewDbgInfoFormat

cl::opt<bool> UseNewDbgInfoFormat

extern

Referenced by buildFrameDebugInfo(), and insertSpills().