MemoryBuiltins.cpp File Reference (original) (raw)

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Macros
#define	DEBUG_TYPE "memory-builtins"

Enumerations
enum	AllocType : uint8_t { OpNewLike = 1<<0 , MallocLike = 1<<1 , StrDupLike = 1<<2 , MallocOrOpNewLike = MallocLike \| OpNewLike , AllocLike = MallocOrOpNewLike	StrDupLike , AnyAlloc = AllocLike }
enum class	MallocFamily { Malloc, CPPNew, CPPNewAligned, CPPNewArray, CPPNewArrayAligned, MSVCNew, MSVCArrayNew, VecMalloc, KmpcAllocShared }

Functions
StringRef	mangledNameForMallocFamily (const MallocFamily &Family)
static const Function *	getCalledFunction (const Value *V)
static std::optional< AllocFnsTy >	getAllocationDataForFunction (const Function Callee, AllocType AllocTy, const TargetLibraryInfo TLI)
	Returns the allocation data for the given value if it's a call to a known allocation function.
static std::optional< AllocFnsTy >	getAllocationData (const Value V, AllocType AllocTy, const TargetLibraryInfo TLI)
static std::optional< AllocFnsTy >	getAllocationData (const Value *V, AllocType AllocTy, function_ref< const TargetLibraryInfo &(Function &)> GetTLI)
static std::optional< AllocFnsTy >	getAllocationSize (const CallBase CB, const TargetLibraryInfo TLI)
static AllocFnKind	getAllocFnKind (const Value *V)
static AllocFnKind	getAllocFnKind (const Function *F)
static bool	checkFnAllocKind (const Value *V, AllocFnKind Wanted)
static bool	checkFnAllocKind (const Function *F, AllocFnKind Wanted)
static bool	CheckedZextOrTrunc (APInt &I, unsigned IntTyBits)
	When we're compiling N-bit code, and the user uses parameters that are greater than N bits (e.g.
std::optional< FreeFnsTy >	getFreeFunctionDataForFunction (const Function *Callee, const LibFunc TLIFn)
static APInt	getSizeWithOverflow (const SizeOffsetAPInt &Data)
	STATISTIC (ObjectVisitorArgument, "Number of arguments with unsolved size and offset")
	STATISTIC (ObjectVisitorLoad, "Number of load instructions with unsolved size and offset")
static std::optional< APInt >	combinePossibleConstantValues (std::optional< APInt > LHS, std::optional< APInt > RHS, ObjectSizeOpts::Mode EvalMode)
static std::optional< APInt >	aggregatePossibleConstantValuesImpl (const Value *V, ObjectSizeOpts::Mode EvalMode, unsigned BitWidth, unsigned recursionDepth)
static std::optional< APInt >	aggregatePossibleConstantValues (const Value *V, ObjectSizeOpts::Mode EvalMode, unsigned BitWidth)

◆ DEBUG_TYPE

#define DEBUG_TYPE "memory-builtins"

◆ AllocType

Enumerator
OpNewLike
MallocLike
StrDupLike
MallocOrOpNewLike
AllocLike
AnyAlloc

Definition at line 59 of file MemoryBuiltins.cpp.

◆ MallocFamily

Enumerator
Malloc
CPPNew
CPPNewAligned
CPPNewArray
CPPNewArrayAligned
MSVCNew
MSVCArrayNew
VecMalloc
KmpcAllocShared

Definition at line 68 of file MemoryBuiltins.cpp.

◆ aggregatePossibleConstantValues()

◆ aggregatePossibleConstantValuesImpl()

◆ CheckedZextOrTrunc()

When we're compiling N-bit code, and the user uses parameters that are greater than N bits (e.g.

uint64_t on a 32-bit build), we can run into trouble with APInt size issues. This function handles resizing + overflow checks for us. Check and zext or trunc I depending on IntTyBits and I's value.

Definition at line 355 of file MemoryBuiltins.cpp.

References I.

Referenced by llvm::getAllocSize().

◆ checkFnAllocKind() [1/2]

◆ checkFnAllocKind() [2/2]

◆ combinePossibleConstantValues()

◆ getAllocationData() [1/2]

◆ getAllocationData() [2/2]

◆ getAllocationDataForFunction()

Returns the allocation data for the given value if it's a call to a known allocation function.

Definition at line 177 of file MemoryBuiltins.cpp.

References AllocationFnData, AllocFnsTy::AllocTy, llvm::find_if(), AllocFnsTy::FstParam, llvm::TargetLibraryInfo::getLibFunc(), llvm::TargetLibraryInfo::has(), AllocFnsTy::NumParams, P, and AllocFnsTy::SndParam.

Referenced by getAllocationData(), getAllocationData(), llvm::getAllocationFamily(), and getAllocationSize().

◆ getAllocationSize()

◆ getAllocFnKind() [1/2]

◆ getAllocFnKind() [2/2]

◆ getCalledFunction()

Definition at line 159 of file MemoryBuiltins.cpp.

References llvm::dyn_cast(), and llvm::isa().

Referenced by llvm::orc::SpeculateQuery::findCalles(), FindPreallocatedCall(), getAllocationData(), getAllocationData(), llvm::getAllocationFamily(), getAllocationSize(), llvm::getFreedOperand(), llvm::AArch64TTIImpl::getUnrollingPreferences(), llvm::ARMTTIImpl::getUnrollingPreferences(), llvm::BasicTTIImplBase< BasicTTIImpl >::getUnrollingPreferences(), llvm::RISCVTTIImpl::getUnrollingPreferences(), llvm::SystemZTTIImpl::getUnrollingPreferences(), llvm::WebAssemblyTTIImpl::getUnrollingPreferences(), llvm::InlineAdvice::InlineAdvice(), isNoReturnDef(), and llvm::InstCombinerImpl::visitCallInst().

◆ getFreeFunctionDataForFunction()

◆ getSizeWithOverflow()

◆ mangledNameForMallocFamily()

◆ STATISTIC() [1/2]

STATISTIC	(	ObjectVisitorArgument	,
"Number of arguments with unsolved size and offset"	)

◆ STATISTIC() [2/2]

STATISTIC	(	ObjectVisitorLoad	,
"Number of load instructions with unsolved size and offset"	)