MemoryBuiltins.h File Reference

#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/Analysis/TargetFolder.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InstVisitor.h"
#include "llvm/IR/ValueHandle.h"
#include <cstdint>
#include <optional>
#include <utility>

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Classes
struct	llvm::ObjectSizeOpts
	Various options to control the behavior of getObjectSize. More...
class	llvm::ObjectSizeOffsetVisitor
	Evaluate the size and offset of an object pointed to by a Value* statically. More...
class	llvm::ObjectSizeOffsetEvaluator
	Evaluate the size and offset of an object pointed to by a Value*. More...

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Typedefs
using	llvm::SizeOffsetType = std::pair< APInt, APInt >
using	llvm::SizeOffsetEvalType = std::pair< Value *, Value * >

Functions
bool	llvm::isAllocationFn (const Value *V, const TargetLibraryInfo *TLI)
	Tests if a value is a call or invoke to a library function that allocates or reallocates memory (either malloc, calloc, realloc, or strdup like).
bool	llvm::isAllocationFn (const Value *V, function_ref< const TargetLibraryInfo &(Function &)> GetTLI)
bool	llvm::isNewLikeFn (const Value *V, const TargetLibraryInfo *TLI)
	Tests if a value is a call or invoke to a library function that allocates memory via new.
bool	llvm::isMallocOrCallocLikeFn (const Value *V, const TargetLibraryInfo *TLI)
	Tests if a value is a call or invoke to a library function that allocates memory similar to malloc or calloc.
bool	llvm::isAllocLikeFn (const Value *V, const TargetLibraryInfo *TLI)
	Tests if a value is a call or invoke to a library function that allocates memory (either malloc, calloc, or strdup like).
bool	llvm::isReallocLikeFn (const Function *F)
	Tests if a function is a call or invoke to a library function that reallocates memory (e.g., realloc).
Value *	llvm::getReallocatedOperand (const CallBase *CB)
	If this is a call to a realloc function, return the reallocated operand.
bool	llvm::isLibFreeFunction (const Function *F, const LibFunc TLIFn)
	isLibFreeFunction - Returns true if the function is a builtin free()
Value *	llvm::getFreedOperand (const CallBase *CB, const TargetLibraryInfo *TLI)
	If this if a call to a free function, return the freed operand.
bool	llvm::isRemovableAlloc (const CallBase *V, const TargetLibraryInfo *TLI)
	Return true if this is a call to an allocation function that does not have side effects that we are required to preserve beyond the effect of allocating a new object.
Value *	llvm::getAllocAlignment (const CallBase *V, const TargetLibraryInfo *TLI)
	Gets the alignment argument for an aligned_alloc-like function, using either built-in knowledge based on fuction names/signatures or allocalign attributes.
std::optional< APInt >	llvm::getAllocSize (const CallBase *CB, const TargetLibraryInfo *TLI, function_ref< const Value *(const Value *)> Mapper=[](const Value *V) { return V;})
	Return the size of the requested allocation.
Constant *	llvm::getInitialValueOfAllocation (const Value *V, const TargetLibraryInfo *TLI, Type *Ty)
	If this is a call to an allocation function that initializes memory to a fixed value, return said value in the requested type.
std::optional< StringRef >	llvm::getAllocationFamily (const Value *I, const TargetLibraryInfo *TLI)
	If a function is part of an allocation family (e.g.
bool	llvm::getObjectSize (const Value *Ptr, uint64_t &Size, const DataLayout &DL, const TargetLibraryInfo *TLI, ObjectSizeOpts Opts={})
	Compute the size of the object pointed by Ptr.
Value *	llvm::lowerObjectSizeCall (IntrinsicInst *ObjectSize, const DataLayout &DL, const TargetLibraryInfo *TLI, bool MustSucceed)
	Try to turn a call to @llvm.objectsize into an integer value of the given Type.
Value *	llvm::lowerObjectSizeCall (IntrinsicInst *ObjectSize, const DataLayout &DL, const TargetLibraryInfo *TLI, AAResults *AA, bool MustSucceed, SmallVectorImpl< Instruction * > *InsertedInstructions=nullptr)