llvmlite.ir
All values <ir-values>
used in an LLVM module are explicitly typed. All types derive from a common base class Type
. You can instantiate most of them directly. Once instantiated, a type should be considered immutable.
The base class for all types. Never instantiate it directly. Types have the following methods in common:
as_pointer(addrspace=0)
Return a
PointerType
pointing to this type. The optional addrspace integer allows you to choose a non-default address space---the meaning is platform dependent.get_abi_size(target_data)
Get the ABI size of this type, in bytes, according to the target_data---an
llvmlite.binding.TargetData
instance.get_abi_alignment(target_data)
Get the ABI alignment of this type, in bytes, according to the target_data---an
llvmlite.binding.TargetData
instance.NOTE:
get_abi_size
andget_abi_alignment
call into the LLVM C++ API to get the requested information.__call__(value)
A convenience method to create a
Constant
of this type with the given value:>>> int32 = ir.IntType(32) >>> c = int32(42) >>> c <ir.Constant type='i32' value=42> >>> print(c) i32 42
The type of pointers to another type.
Pointer types expose the following attributes:
addrspace
The pointer's address space number. This optional integer allows you to choose a non-default address space---the meaning is platform dependent.
pointee
The type pointed to.
The type of integers. The Python integer bits specifies the bitwidth of the integers having this type.
width
The width in bits.
The type of half-precision, floating-point, real numbers.
The type of single-precision, floating-point, real numbers.
The type of double-precision, floating-point, real numbers.
The class for void types. Used only as the return type of a function without a return value.
The base class for aggregate types. Never instantiate it directly. Aggregate types have the elements attribute in common.
elements
A tuple-like immutable sequence of element types for this aggregate type.
The class for array types.
- element is the type of every element.
- count is a Python integer representing the number of elements.
The class for vector types.
- element is the type of every element.
- count is a Python integer representing the number of elements.
The class for literal struct types.
- elements is a sequence of element types for each member of the structure.
- packed controls whether to use packed layout.
The class for identified struct types. Identified structs are compared by name. It can be used to make opaque types.
Users should not create new instance directly. Use the Context.get_identified_type
method instead.
An identified struct is created without a body (thus opaque). To define the struct body, use the .set_body
method.
set_body(*elems)
Define the structure body with a sequence of element types.
The type of a function.
- return_type is the return type of the function.
- args is a sequence describing the types of argument to the function.
If var_arg is
True
, the function takes a variable number of additional arguments of unknown types after the explicit args.EXAMPLE:
int32 = ir.IntType(32) fnty = ir.FunctionType(int32, (ir.DoubleType(), ir.PointerType(int32)))
An equivalent C declaration would be:
typedef int32_t (*fnty)(double, int32_t *);
The type for labels <label>
. You do not need to instantiate this type.
The type for metadata
. You do not need to instantiate this type.
NOTE: This class was previously called "MetaData," but it was renamed for clarity.