Enum rustc_target::abi::Primitive

pub enum Primitive {
    Int(Integer, bool),
    F32,
    F64,
    Pointer(AddressSpace),
}

Fundamental unit of memory access and layout.

Variants

Int(Integer, bool)

The bool is the signedness of the Integer type.

One would think we would not care about such details this low down, but some ABIs are described in terms of C types and ISAs where the integer arithmetic is done on {sign,zero}-extended registers, e.g. a negative integer passed by zero-extension will appear positive in the callee, and most operations on it will produce the wrong values.

F32

F64

Pointer(AddressSpace)

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes

Size for each variant:

• Int: 2 bytes
• F32: 0 bytes
• F64: 0 bytes
• Pointer: 7 bytes