#![feature(custom_mir, core_intrinsics)] extern crate core; use core::intrinsics::mir::*; // EMIT_MIR as_cast.int_to_int.built.after.mir #[custom_mir(dialect = "built")] fn int_to_int(x: u32) -> i32 { mir!( { RET = x as i32; Return() } ) } // EMIT_MIR as_cast.float_to_int.built.after.mir #[custom_mir(dialect = "built")] fn float_to_int(x: f32) -> i32 { mir!( { RET = x as i32; Return() } ) } // EMIT_MIR as_cast.int_to_ptr.built.after.mir #[custom_mir(dialect = "built")] fn int_to_ptr(x: usize) -> *const i32 { mir!( { RET = x as *const i32; Return() } ) } fn main() { assert_eq!(int_to_int(5), 5); assert_eq!(float_to_int(5.), 5); assert_eq!(int_to_ptr(0), std::ptr::null()); }