llvm::CondBrInst Class Reference

Conditional Branch instruction. More...

#include "llvm/IR/Instructions.h"

Inheritance diagram for llvm::CondBrInst:

Public Member Functions
	DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value)
	Transparently provide more efficient getOperand methods.
Value *	getCondition () const
void	setCondition (Value *V)
unsigned	getNumSuccessors () const
BasicBlock *	getSuccessor (unsigned i) const
void	setSuccessor (unsigned idx, BasicBlock *NewSucc)
LLVM_ABI void	swapSuccessors ()
	Swap the successors of this branch instruction.
iterator_range< succ_iterator >	successors ()
iterator_range< const_succ_iterator >	successors () const

Static Public Member Functions
static CondBrInst *	Create (Value *Cond, BasicBlock *IfTrue, BasicBlock *IfFalse, InsertPosition InsertBefore=nullptr)
static bool	classof (const Instruction *I)
static bool	classof (const Value *V)

Protected Member Functions
LLVM_ABI CondBrInst *	cloneImpl () const

Friends
class	Instruction
	Iterator for Instructions in a `BasicBlock.

Detailed Description

Conditional Branch instruction.

Definition at line 3221 of file Instructions.h.

Member Function Documentation

classof() [1/2]

bool llvm::CondBrInst::classof ( const Instruction * I )

inlinestatic

Definition at line 3284 of file Instructions.h.

References I, and Instruction.

Referenced by classof().

classof() [2/2]

bool llvm::CondBrInst::classof ( const Value * V )

inlinestatic

Definition at line 3287 of file Instructions.h.

References llvm::cast(), classof(), and llvm::isa().

cloneImpl()

CondBrInst * CondBrInst::cloneImpl ( ) const

protected

Definition at line 4515 of file Instructions.cpp.

Referenced by Instruction.

Create()

CondBrInst * llvm::CondBrInst::Create ( Value * Cond, BasicBlock * IfTrue, BasicBlock * IfFalse, InsertPosition InsertBefore = nullptr )

inlinestatic

Definition at line 3242 of file Instructions.h.

References Cond.

Referenced by llvm::IRBuilderBase::CreateCondBr(), llvm::IRBuilderBase::CreateCondBr(), createMemMoveLoopUnknownSize(), llvm::emitAMDGPUPrintfCall(), handleNBranch(), insertBoundsCheck(), llvm::InsertCFGStrategy::mutate(), runImpl(), setupBranchForGuard(), simplifySwitchOfPowersOfTwo(), llvm::SplitBlockAndInsertIfThenElse(), llvm::fuzzerop::splitBlockDescriptor(), and llvm::JumpThreadingPass::unfoldSelectInstr().

DECLARE_TRANSPARENT_OPERAND_ACCESSORS()

llvm::CondBrInst::DECLARE_TRANSPARENT_OPERAND_ACCESSORS

(

Value

)

Transparently provide more efficient getOperand methods.

getCondition()

Value * llvm::CondBrInst::getCondition ( ) const

inline

Definition at line 3251 of file Instructions.h.

Referenced by BrPHIToSelect(), buildPartialInvariantUnswitchConditionalBranch(), canFoldTermCondOfLoop(), canSplitLoopBound(), createFoldedExitCond(), createInvariantCond(), DoFlattenLoopPair(), findBestNonTrivialUnswitchCandidate(), FlattenLoopPair(), llvm::foldBranchToCommonDest(), foldCondBranchOnValueKnownInPredecessorImpl(), foldTwoEntryPHINode(), getBranchCondString(), getBranchWeights(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getInnerLoopGuardCmp(), getKnownValueOnEdge(), getOuterLoopLatchCmp(), hoistConditionalLoadsStores(), llvm::InvertBranch(), llvm::ScalarEvolution::isBasicBlockEntryGuardedByCond(), llvm::ScalarEvolution::isLoopBackedgeGuardedByCond(), isLoopExitTestBasedOn(), matchCondition(), matchShiftULTCondition(), mergeConditionalStoreToAddress(), mergeNestedCondBranch(), needsLFTR(), optimizeLoopExitWithUnknownExitCount(), performBranchToCommonDestFolding(), llvm::DomConditionCache::registerBranch(), removeUndefIntroducingPredecessor(), replaceExitCond(), reuseTableCompare(), RunTermFold(), llvm::setWidenableBranchCond(), SimplifyCondBranchToCondBranch(), simplifyInstructionWithPHI(), simplifyOneLoop(), llvm::JumpThreadingPass::threadGuard(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), llvm::InstCombinerImpl::visitCondBrInst(), and llvm::widenWidenableBranch().

getNumSuccessors()

unsigned llvm::CondBrInst::getNumSuccessors ( ) const

inline

Definition at line 3254 of file Instructions.h.

Referenced by getSuccessor(), and setSuccessor().

getSuccessor()

BasicBlock * llvm::CondBrInst::getSuccessor ( unsigned i ) const

inline

Definition at line 3256 of file Instructions.h.

References assert(), llvm::cast_or_null(), llvm::get(), and getNumSuccessors().

Referenced by BrPHIToSelect(), llvm::PredicateInfoBuilder::buildPredicateInfo(), checkBiasedBranch(), llvm::JumpThreadingPass::duplicateCondBranchOnPHIIntoPred(), estimateLoopTripCount(), FindWidenableTerminatorAboveLoop(), foldCondBranchOnValueKnownInPredecessorImpl(), foldTwoEntryPHINode(), llvm::Loop::LoopBounds::getCanonicalPredicate(), getExpectedExitLoopLatchBranch(), llvm::GetIfCondition(), llvm::LoopVectorizationCostModel::getInstructionCost(), getKnownValueOnEdge(), llvm::getLoopEstimatedTripCount(), llvm::Loop::getLoopGuardBranch(), llvm::getLoopProbability(), handlePhiDef(), llvm::ScalarEvolution::isBasicBlockEntryGuardedByCond(), llvm::ScalarEvolution::isLoopBackedgeGuardedByCond(), isProfitableToTransform(), matchCondition(), matchShiftULTCondition(), llvm::JumpThreadingPass::maybethreadThroughTwoBasicBlocks(), llvm::MergeBlockIntoPredecessor(), mergeConditionalStores(), mergeNestedCondBranch(), optimizeLoopExitWithUnknownExitCount(), performBranchToCommonDestFolding(), profitableToRotateLoopExitingLatch(), removeUndefIntroducingPredecessor(), replaceConditionalBranchesOnConstant(), RunTermFold(), llvm::setLoopEstimatedTripCount(), llvm::setLoopProbability(), shouldFoldCondBranchesToCommonDestination(), shouldTryInjectBasingOnMetadata(), SimplifyCondBranchToCondBranch(), simplifyInstructionWithPHI(), simplifyOneLoop(), splitLoopBound(), llvm::JumpThreadingPass::threadGuard(), llvm::JumpThreadingPass::threadThroughTwoBasicBlocks(), tryWidenCondBranchToCondBranch(), turnGuardIntoBranch(), llvm::UnrollAndJamLoop(), llvm::UnrollRuntimeLoopRemainder(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), updatePredecessorProfileMetadata(), violatesLegacyMultiExitLoopCheck(), and llvm::InstCombinerImpl::visitCondBrInst().

setCondition()

void llvm::CondBrInst::setCondition ( Value * V )

inline

Definition at line 3252 of file Instructions.h.

Referenced by FlattenLoopPair(), llvm::InvertBranch(), mergeNestedCondBranch(), performBranchToCommonDestFolding(), replaceExitCond(), RunTermFold(), llvm::setWidenableBranchCond(), SimplifyCondBranchToCondBranch(), splitLoopBound(), llvm::UnrollRuntimeLoopRemainder(), unswitchNontrivialInvariants(), unswitchTrivialBranch(), and llvm::widenWidenableBranch().

setSuccessor()

void llvm::CondBrInst::setSuccessor ( unsigned idx, BasicBlock * NewSucc )

inline

Definition at line 3261 of file Instructions.h.

References assert(), and getNumSuccessors().

Referenced by insertLoopExpansion(), llvm::MergeBlockIntoPredecessor(), mergeNestedCondBranch(), performBranchToCommonDestFolding(), SimplifyCondBranchToCondBranch(), splitLoopBound(), tryWidenCondBranchToCondBranch(), llvm::UnrollAndJamLoop(), unswitchNontrivialInvariants(), and unswitchTrivialBranch().

successors() [1/2]

iterator_range< succ_iterator > llvm::CondBrInst::successors ( )

inline

Definition at line 3273 of file Instructions.h.

References llvm::make_range().

successors() [2/2]

iterator_range< const_succ_iterator > llvm::CondBrInst::successors ( ) const

inline

Definition at line 3278 of file Instructions.h.

References llvm::make_range().

swapSuccessors()

void CondBrInst::swapSuccessors

(

)

Swap the successors of this branch instruction.

Swaps the successors of the branch instruction. This also swaps any branch weight metadata associated with the instruction so that it continues to map correctly to each operand.

Definition at line 1240 of file Instructions.cpp.

Referenced by llvm::InstCombinerImpl::freelyInvertAllUsersOf(), llvm::InvertBranch(), RunTermFold(), turnGuardIntoBranch(), and llvm::InstCombinerImpl::visitCondBrInst().

Friends And Related Symbol Documentation

Instruction

friend class Instruction

friend

Iterator for Instructions in a `BasicBlock.

/ \Returns an sandboxir::Instruction & when derereferenced. class BBIterator { public: using difference_type = std::ptrdiff_t; using value_type = Instruction; using pointer = value_type *; using reference = value_type &; using iterator_category = std::bidirectional_iterator_tag;

private: llvm::BasicBlock *BB; llvm::BasicBlock::iterator It; Context *Ctx; LLVM_ABI pointer getInstr(llvm::BasicBlock::iterator It) const;

public: BBIterator() : BB(nullptr), Ctx(nullptr) {} BBIterator(llvm::BasicBlock <em>BB, llvm::BasicBlock::iterator It, Context *Ctx) : BB(BB), It(It), Ctx(Ctx) {} reference operator() const { return *getInstr(It); } LLVM_ABI BBIterator &operator++(); BBIterator operator++(int) { auto Copy = *this; ++*this; return Copy; } LLVM_ABI BBIterator &operator--(); BBIterator operator--(int) { auto Copy = *this; –*this; return Copy; } bool operator==(const BBIterator &Other) const { assert(Ctx == Other.Ctx && "BBIterators in different context!"); return It == Other.It; } bool operator!=(const BBIterator &Other) const { return !(*this == Other); } / \Returns the SBInstruction that corresponds to this iterator, or null if / the instruction is not found in the IR-to-SandboxIR tables. pointer get() const { return getInstr(It); } / \Returns the parent BB. LLVM_ABI BasicBlock *getNodeParent() const; };

/ Contains a list of sandboxir::Instruction's. class BasicBlock : public Value { / Builds a graph that contains all values in BB in their original form / i.e., no vectorization is taking place here. LLVM_ABI void buildBasicBlockFromLLVMIR(llvm::BasicBlock *LLVMBB); friend class Context; // For buildBasicBlockFromIR

Definition at line 3232 of file Instructions.h.

References cloneImpl(), Instruction, and LLVM_ABI.

Referenced by classof(), and Instruction.

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

• include/llvm/IR/Instructions.h
• lib/IR/Instructions.cpp