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Struct `dmd.target.Target`

Describes a back-end target. At present it is incomplete, but in the future it should grow to contain most or all target machine and target O/S specific information.


						
				struct Target
				;

In many cases, calls to sizeof() can't be used directly for getting data type sizes since cross compiling is supported and would end up using the host sizes rather than the target sizes.

Fields

Name	Type	Description
`classinfosize`	`uint`	size of `ClassInfo`
`cppExceptions`	`bool`	set if catching C++ exceptions is supported
`c_longsize`	`uint`	size of a C `long` or `unsigned long` type
`c_long_doublesize`	`uint`	size of a C `long double`
`int64Mangle`	`char`	mangling character for C++ int64_t
`maxStaticDataSize`	`ulong`	maximum size of static data
`ptrsize`	`uint`	size of a pointer in bytes
`realalignsize`	`uint`	alignment for reals
`realpad`	`uint`	padding added to the CPU real size to bring it up to realsize
`realsize`	`uint`	size a real consumes in memory
`reverseCppOverloads`	`bool`	set if overloaded functions are grouped and in reverse order (such as in dmc and cl)
`twoDtorInVtable`	`bool`	target C++ ABI puts deleting and non-deleting destructor into vtable
`uint64Mangle`	`char`	mangling character for C++ uint64_t

Methods

Name	Description
`alignsize`	Requested target memory alignment size of the given type.
`cppParameterType`	Get the type that will really be used for passing the given argument to an `extern(C++)` function.
`cppTypeInfoMangle`	Get RTTI mangling of the given class declaration for C++ ABI.
`cppTypeMangle`	Gets vendor-specific type mangling for C++ ABI.
`critsecsize`	Size of the target OS critical section.
`fieldalign`	Requested target field alignment size of the given type.
`isReturnOnStack`	Determine return style of function - whether in registers or through a hidden pointer to the caller's stack.
`isVectorOpSupported`	Checks whether the target supports the given operation for vectors.
`isVectorTypeSupported`	Checks whether the target supports a vector type.
`loadModule`	Perform any post parsing analysis on the given module. Certain compiler backends (ie: GDC) have special placeholder modules whose source are empty, but code gets injected immediately after loading.
`paintAsType`	Encode the given expression, which is assumed to be an rvalue literal as another type for use in CTFE. This corresponds roughly to the idiom `cast(T)&e`.
`parameterSize`	Determine the size a value of type `t` will be when it is passed on the function parameter stack.
`systemLinkage`	Default system linkage for the target.
`toArgTypes`	Describes how an argument type is passed to a function on target.
`toCppMangle`	Mangle the given symbol for C++ ABI.
`va_listType`	Type for the `va_list` type for the target.
`_init`	Initialize the Target

Inner structs

Name	Description
`FPTypeProperties`	Values representing all properties for floating point types

Aliases

Name	Description
`DoubleProperties`
`FloatProperties`
`RealProperties`

Authors

Walter Bright

License

Boost License 1.0