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#![feature(custom_mir, core_intrinsics)]
extern crate core;
use core::intrinsics::mir::*;
union U {
a: i32,
b: u32,
}
// EMIT_MIR projections.unions.built.after.mir
#[custom_mir(dialect = "built")]
fn unions(u: U) -> i32 {
mir!({
RET = u.a;
Return()
})
}
// EMIT_MIR projections.tuples.built.after.mir
#[custom_mir(dialect = "analysis", phase = "post-cleanup")]
fn tuples(i: (u32, i32)) -> (u32, i32) {
mir!(
type RET = (u32, i32);
{
RET.0 = i.0;
RET.1 = i.1;
Return()
}
)
}
// EMIT_MIR projections.unwrap.built.after.mir
#[custom_mir(dialect = "built")]
fn unwrap(opt: Option<i32>) -> i32 {
mir!({
RET = Field(Variant(opt, 1), 0);
Return()
})
}
// EMIT_MIR projections.unwrap_deref.built.after.mir
#[custom_mir(dialect = "built")]
fn unwrap_deref(opt: Option<&i32>) -> i32 {
mir!({
RET = *Field::<&i32>(Variant(opt, 1), 0);
Return()
})
}
// EMIT_MIR projections.set.built.after.mir
#[custom_mir(dialect = "built")]
fn set(opt: &mut Option<i32>) {
mir!({
place!(Field(Variant(*opt, 1), 0)) = 10;
Return()
})
}
// EMIT_MIR projections.simple_index.built.after.mir
#[custom_mir(dialect = "built")]
fn simple_index(a: [i32; 10], b: &[i32]) -> i32 {
mir!({
let temp = 3;
RET = a[temp];
RET = (*b)[temp];
Return()
})
}
// EMIT_MIR projections.copy_for_deref.built.after.mir
#[custom_mir(dialect = "runtime", phase = "initial")]
fn copy_for_deref(x: (&i32, i32)) -> i32 {
mir!(
let temp: &i32;
{
temp = CopyForDeref(x.0);
RET = *temp;
Return()
}
)
}
fn main() {
assert_eq!(unions(U { a: 5 }), 5);
assert_eq!(tuples((5, 6)), (5, 6));
assert_eq!(unwrap(Some(5)), 5);
assert_eq!(unwrap_deref(Some(&5)), 5);
let mut o = Some(5);
set(&mut o);
assert_eq!(o, Some(10));
assert_eq!(simple_index([0; 10], &[0; 10]), 0);
let one = 1;
assert_eq!(copy_for_deref((&one, one)), 1);
}
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