LLVM: llvm::ObjectSizeOpts Struct Reference (original) (raw)

Various options to control the behavior of getObjectSize. More...

#include "[llvm/Analysis/MemoryBuiltins.h](MemoryBuiltins%5F8h%5Fsource.html)"

Public Types
enum class	Mode : uint8_t { ExactSizeFromOffset, ExactUnderlyingSizeAndOffset, Min, Max }
	Controls how we handle conditional statements with unknown conditions. More...

Public Attributes
Mode	EvalMode = Mode::ExactSizeFromOffset
	How we want to evaluate this object's size.
bool	RoundToAlign = false
	Whether to round the result up to the alignment of allocas, byval arguments, and global variables.
bool	NullIsUnknownSize = false
	If this is true, null pointers in address space 0 will be treated as though they can't be evaluated.
AAResults *	AA = nullptr
	If set, used for more accurate evaluation.

Various options to control the behavior of getObjectSize.

Definition at line 143 of file MemoryBuiltins.h.

◆ Mode

Controls how we handle conditional statements with unknown conditions.

Enumerator
ExactSizeFromOffset	All branches must be known and have the same size, starting from the offset, to be merged.
ExactUnderlyingSizeAndOffset	All branches must be known and have the same underlying size and offset to be merged.
Min	Evaluate all branches of an unknown condition. If all evaluations succeed, pick the minimum size.
Max	Same as Min, except we pick the maximum size of all of the branches.

Definition at line 145 of file MemoryBuiltins.h.

AAResults* llvm::ObjectSizeOpts::AA = nullptr

Mode llvm::ObjectSizeOpts::EvalMode = Mode::ExactSizeFromOffset

bool llvm::ObjectSizeOpts::NullIsUnknownSize = false

bool llvm::ObjectSizeOpts::RoundToAlign = false

The documentation for this struct was generated from the following file: