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| bool | llvm::ConstantFoldTerminator (BasicBlock *BB, bool DeleteDeadConditions=false, const TargetLibraryInfo *TLI=nullptr, DomTreeUpdater *DTU=nullptr) |
| | If a terminator instruction is predicated on a constant value, convert it into an unconditional branch to the constant destination.
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| bool | llvm::isInstructionTriviallyDead (Instruction *I, const TargetLibraryInfo *TLI=nullptr) |
| | Return true if the result produced by the instruction is not used, and the instruction will return.
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| bool | llvm::wouldInstructionBeTriviallyDead (const Instruction *I, const TargetLibraryInfo *TLI=nullptr) |
| | Return true if the result produced by the instruction would have no side effects if it was not used.
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| bool | llvm::wouldInstructionBeTriviallyDeadOnUnusedPaths (Instruction *I, const TargetLibraryInfo *TLI=nullptr) |
| | Return true if the result produced by the instruction has no side effects on any paths other than where it is used.
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| bool | llvm::RecursivelyDeleteTriviallyDeadInstructions (Value *V, const TargetLibraryInfo *TLI=nullptr, MemorySSAUpdater *MSSAU=nullptr, std::function< void(Value *)> AboutToDeleteCallback=std::function< void(Value *)>()) |
| | If the specified value is a trivially dead instruction, delete it.
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| void | llvm::RecursivelyDeleteTriviallyDeadInstructions (SmallVectorImpl< WeakTrackingVH > &DeadInsts, const TargetLibraryInfo *TLI=nullptr, MemorySSAUpdater *MSSAU=nullptr, std::function< void(Value *)> AboutToDeleteCallback=std::function< void(Value *)>()) |
| | Delete all of the instructions in DeadInsts, and all other instructions that deleting these in turn causes to be trivially dead.
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| bool | llvm::RecursivelyDeleteTriviallyDeadInstructionsPermissive (SmallVectorImpl< WeakTrackingVH > &DeadInsts, const TargetLibraryInfo *TLI=nullptr, MemorySSAUpdater *MSSAU=nullptr, std::function< void(Value *)> AboutToDeleteCallback=std::function< void(Value *)>()) |
| | Same functionality as RecursivelyDeleteTriviallyDeadInstructions, but allow instructions that are not trivially dead.
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| bool | llvm::RecursivelyDeleteDeadPHINode (PHINode *PN, const TargetLibraryInfo *TLI=nullptr, MemorySSAUpdater *MSSAU=nullptr) |
| | If the specified value is an effectively dead PHI node, due to being a def-use chain of single-use nodes that either forms a cycle or is terminated by a trivially dead instruction, delete it.
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| bool | llvm::SimplifyInstructionsInBlock (BasicBlock *BB, const TargetLibraryInfo *TLI=nullptr) |
| | Scan the specified basic block and try to simplify any instructions in it and recursively delete dead instructions.
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| bool | llvm::replaceDbgUsesWithUndef (Instruction *I) |
| | Replace all the uses of an SSA value in @llvm.dbg intrinsics with undef.
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| void | llvm::MergeBasicBlockIntoOnlyPred (BasicBlock *BB, DomTreeUpdater *DTU=nullptr) |
| | BB is a block with one predecessor and its predecessor is known to have one successor (BB!).
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| bool | llvm::TryToSimplifyUncondBranchFromEmptyBlock (BasicBlock *BB, DomTreeUpdater *DTU=nullptr) |
| | BB is known to contain an unconditional branch, and contains no instructions other than PHI nodes, potential debug intrinsics and the branch.
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| bool | llvm::EliminateDuplicatePHINodes (BasicBlock *BB) |
| | Check for and eliminate duplicate PHI nodes in this block.
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| bool | llvm::EliminateDuplicatePHINodes (BasicBlock *BB, SmallPtrSetImpl< PHINode * > &ToRemove) |
| | Check for and eliminate duplicate PHI nodes in this block.
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| bool | llvm::simplifyCFG (BasicBlock *BB, const TargetTransformInfo &TTI, DomTreeUpdater *DTU=nullptr, const SimplifyCFGOptions &Options={}, ArrayRef< WeakVH > LoopHeaders={}) |
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| bool | llvm::FlattenCFG (BasicBlock *BB, AAResults *AA=nullptr) |
| | This function is used to flatten a CFG.
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| bool | llvm::foldBranchToCommonDest (BranchInst *BI, llvm::DomTreeUpdater *DTU=nullptr, MemorySSAUpdater *MSSAU=nullptr, const TargetTransformInfo *TTI=nullptr, unsigned BonusInstThreshold=1) |
| | If this basic block is ONLY a setcc and a branch, and if a predecessor branches to us and one of our successors, fold the setcc into the predecessor and use logical operations to pick the right destination.
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| AllocaInst * | llvm::DemoteRegToStack (Instruction &X, bool VolatileLoads=false, std::optional< BasicBlock::iterator > AllocaPoint=std::nullopt) |
| | This function takes a virtual register computed by an Instruction and replaces it with a slot in the stack frame, allocated via alloca.
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| AllocaInst * | llvm::DemotePHIToStack (PHINode *P, std::optional< BasicBlock::iterator > AllocaPoint=std::nullopt) |
| | This function takes a virtual register computed by a phi node and replaces it with a slot in the stack frame, allocated via alloca.
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| Align | llvm::tryEnforceAlignment (Value *V, Align PrefAlign, const DataLayout &DL) |
| | If the specified pointer points to an object that we control, try to modify the object's alignment to PrefAlign.
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| Align | llvm::getOrEnforceKnownAlignment (Value *V, MaybeAlign PrefAlign, const DataLayout &DL, const Instruction *CxtI=nullptr, AssumptionCache *AC=nullptr, const DominatorTree *DT=nullptr) |
| | Try to ensure that the alignment of V is at least PrefAlign bytes.
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| Align | llvm::getKnownAlignment (Value *V, const DataLayout &DL, const Instruction *CxtI=nullptr, AssumptionCache *AC=nullptr, const DominatorTree *DT=nullptr) |
| | Try to infer an alignment for the specified pointer.
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| CallInst * | llvm::createCallMatchingInvoke (InvokeInst *II) |
| | Create a call that matches the invoke II in terms of arguments, attributes, debug information, etc.
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| CallInst * | llvm::changeToCall (InvokeInst *II, DomTreeUpdater *DTU=nullptr) |
| | This function converts the specified invoke into a normal call.
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| void | llvm::InsertDebugValueAtStoreLoc (DbgVariableRecord *DVR, StoreInst *SI, DIBuilder &Builder) |
| | ===------------------------------------------------------------------—===// Dbg Intrinsic utilities
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| void | llvm::InsertDebugValueAtStoreLoc (DbgVariableIntrinsic *DII, StoreInst *SI, DIBuilder &Builder) |
| | Creates and inserts an llvm.dbg.value intrinsic before a store that has an associated llvm.dbg.value intrinsic.
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableIntrinsic *DII, StoreInst *SI, DIBuilder &Builder) |
| | Inserts a llvm.dbg.value intrinsic before a store to an alloca'd value that has an associated llvm.dbg.declare intrinsic.
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableRecord *DVR, StoreInst *SI, DIBuilder &Builder) |
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableIntrinsic *DII, LoadInst *LI, DIBuilder &Builder) |
| | Inserts a llvm.dbg.value intrinsic before a load of an alloca'd value that has an associated llvm.dbg.declare intrinsic.
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableRecord *DVR, LoadInst *LI, DIBuilder &Builder) |
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableIntrinsic *DII, PHINode *LI, DIBuilder &Builder) |
| | Inserts a llvm.dbg.value intrinsic after a phi that has an associated llvm.dbg.declare intrinsic.
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| void | llvm::ConvertDebugDeclareToDebugValue (DbgVariableRecord *DVR, PHINode *LI, DIBuilder &Builder) |
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| bool | llvm::LowerDbgDeclare (Function &F) |
| | Lowers llvm.dbg.declare intrinsics into appropriate set of llvm.dbg.value intrinsics.
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| void | llvm::insertDebugValuesForPHIs (BasicBlock *BB, SmallVectorImpl< PHINode * > &InsertedPHIs) |
| | Propagate dbg.value intrinsics through the newly inserted PHIs.
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| bool | llvm::replaceDbgDeclare (Value *Address, Value *NewAddress, DIBuilder &Builder, uint8_t DIExprFlags, int Offset) |
| | Replaces llvm.dbg.declare instruction when the address it describes is replaced with a new value.
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| void | llvm::replaceDbgValueForAlloca (AllocaInst *AI, Value *NewAllocaAddress, DIBuilder &Builder, int Offset=0) |
| | Replaces multiple llvm.dbg.value instructions when the alloca it describes is replaced with a new value.
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| void | llvm::salvageDebugInfo (Instruction &I) |
| | Assuming the instruction I is going to be deleted, attempt to salvage debug users of I by writing the effect of I in a DIExpression.
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| void | llvm::salvageDebugInfoForDbgValues (Instruction &I, ArrayRef< DbgVariableIntrinsic * > Insns, ArrayRef< DbgVariableRecord * > DPInsns) |
| | Implementation of salvageDebugInfo, applying only to instructions in Insns, rather than all debug users from findDbgUsers( I).
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| Value * | llvm::salvageDebugInfoImpl (Instruction &I, uint64_t CurrentLocOps, SmallVectorImpl< uint64_t > &Ops, SmallVectorImpl< Value * > &AdditionalValues) |
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| bool | llvm::replaceAllDbgUsesWith (Instruction &From, Value &To, Instruction &DomPoint, DominatorTree &DT) |
| | Point debug users of From to To or salvage them.
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| bool | llvm::handleUnreachableTerminator (Instruction *I, SmallVectorImpl< Value * > &PoisonedValues) |
| | If a terminator in an unreachable basic block has an operand of type Instruction, transform it into poison.
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| std::pair< unsigned, unsigned > | llvm::removeAllNonTerminatorAndEHPadInstructions (BasicBlock *BB) |
| | Remove all instructions from a basic block other than its terminator and any present EH pad instructions.
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| unsigned | llvm::changeToUnreachable (Instruction *I, bool PreserveLCSSA=false, DomTreeUpdater *DTU=nullptr, MemorySSAUpdater *MSSAU=nullptr) |
| | Insert an unreachable instruction before the specified instruction, making it and the rest of the code in the block dead.
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| BasicBlock * | llvm::changeToInvokeAndSplitBasicBlock (CallInst *CI, BasicBlock *UnwindEdge, DomTreeUpdater *DTU=nullptr) |
| | Convert the CallInst to InvokeInst with the specified unwind edge basic block.
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| Instruction * | llvm::removeUnwindEdge (BasicBlock *BB, DomTreeUpdater *DTU=nullptr) |
| | Replace 'BB's terminator with one that does not have an unwind successor block.
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| bool | llvm::removeUnreachableBlocks (Function &F, DomTreeUpdater *DTU=nullptr, MemorySSAUpdater *MSSAU=nullptr) |
| | Remove all blocks that can not be reached from the function's entry.
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| void | llvm::combineMetadata (Instruction *K, const Instruction *J, ArrayRef< unsigned > KnownIDs, bool DoesKMove) |
| | Combine the metadata of two instructions so that K can replace J.
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| void | llvm::combineMetadataForCSE (Instruction *K, const Instruction *J, bool DoesKMove) |
| | Combine the metadata of two instructions so that K can replace J.
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| void | llvm::copyMetadataForLoad (LoadInst &Dest, const LoadInst &Source) |
| | Copy the metadata from the source instruction to the destination (the replacement for the source instruction).
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| void | llvm::patchReplacementInstruction (Instruction *I, Value *Repl) |
| | Patch the replacement so that it is not more restrictive than the value being replaced.
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| unsigned | llvm::replaceNonLocalUsesWith (Instruction *From, Value *To) |
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| unsigned | llvm::replaceDominatedUsesWith (Value *From, Value *To, DominatorTree &DT, const BasicBlockEdge &Edge) |
| | Replace each use of 'From' with 'To' if that use is dominated by the given edge.
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| unsigned | llvm::replaceDominatedUsesWith (Value *From, Value *To, DominatorTree &DT, const BasicBlock *BB) |
| | Replace each use of 'From' with 'To' if that use is dominated by the end of the given BasicBlock.
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| unsigned | llvm::replaceDominatedUsesWithIf (Value *From, Value *To, DominatorTree &DT, const BasicBlockEdge &Edge, function_ref< bool(const Use &U, const Value *To)> ShouldReplace) |
| | Replace each use of 'From' with 'To' if that use is dominated by the given edge and the callback ShouldReplace returns true.
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| unsigned | llvm::replaceDominatedUsesWithIf (Value *From, Value *To, DominatorTree &DT, const BasicBlock *BB, function_ref< bool(const Use &U, const Value *To)> ShouldReplace) |
| | Replace each use of 'From' with 'To' if that use is dominated by the end of the given BasicBlock and the callback ShouldReplace returns true.
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| bool | llvm::callsGCLeafFunction (const CallBase *Call, const TargetLibraryInfo &TLI) |
| | Return true if this call calls a gc leaf function.
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| void | llvm::copyNonnullMetadata (const LoadInst &OldLI, MDNode *N, LoadInst &NewLI) |
| | Copy a nonnull metadata node to a new load instruction.
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| void | llvm::copyRangeMetadata (const DataLayout &DL, const LoadInst &OldLI, MDNode *N, LoadInst &NewLI) |
| | Copy a range metadata node to a new load instruction.
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| void | llvm::dropDebugUsers (Instruction &I) |
| | Remove the debug intrinsic instructions for the given instruction.
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| void | llvm::hoistAllInstructionsInto (BasicBlock *DomBlock, Instruction *InsertPt, BasicBlock *BB) |
| | Hoist all of the instructions in the IfBlock to the dominant block DomBlock, by moving its instructions to the insertion point InsertPt.
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| DIExpression * | llvm::getExpressionForConstant (DIBuilder &DIB, const Constant &C, Type &Ty) |
| | Given a constant, create a debug information expression.
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| void | llvm::remapDebugVariable (ValueToValueMapTy &Mapping, Instruction *Inst) |
| | Remap the operands of the debug records attached to Inst, and the operands of Inst itself if it's a debug intrinsic.
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| bool | llvm::recognizeBSwapOrBitReverseIdiom (Instruction *I, bool MatchBSwaps, bool MatchBitReversals, SmallVectorImpl< Instruction * > &InsertedInsts) |
| | Try to match a bswap or bitreverse idiom.
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| void | llvm::maybeMarkSanitizerLibraryCallNoBuiltin (CallInst *CI, const TargetLibraryInfo *TLI) |
| | Given a CallInst, check if it calls a string function known to CodeGen, and mark it with NoBuiltin if so.
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| bool | llvm::canReplaceOperandWithVariable (const Instruction *I, unsigned OpIdx) |
| | Given an instruction, is it legal to set operand OpIdx to a non-constant value?
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| Value * | llvm::invertCondition (Value *Condition) |
| | Invert the given true/false value, possibly reusing an existing copy.
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| bool | llvm::inferAttributesFromOthers (Function &F) |
| | If we can infer one attribute from another on the declaration of a function, explicitly materialize the maximal set in the IR.
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