8e0c3f5c46
As opposed to using weirdness involving pretending the body block is the loop block. This does not pass tests This commit is [ci skip] because I know it doesn't pass tests yet. Somehow this commit introduces nondeterminism into the handling of loops.
79 lines
2.0 KiB
Rust
79 lines
2.0 KiB
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
// compile-flags: -Z identify_regions -Z emit-end-regions
|
|
// ignore-tidy-linelength
|
|
|
|
// We will EndRegion for borrows in a loop that occur before break but
|
|
// not those after break.
|
|
|
|
fn main() {
|
|
loop {
|
|
let a = true;
|
|
let b = &a;
|
|
if a { break; }
|
|
let c = &a;
|
|
}
|
|
}
|
|
|
|
// END RUST SOURCE
|
|
// START rustc.main.SimplifyCfg-qualify-consts.after.mir
|
|
// let mut _0: ();
|
|
// ...
|
|
// let _2: bool;
|
|
// ...
|
|
// let _3: &'23_1rs bool;
|
|
// ...
|
|
// let _7: &'23_3rs bool;
|
|
// ...
|
|
// let mut _4: ();
|
|
// let mut _5: bool;
|
|
// ...
|
|
// bb0: {
|
|
// goto -> bb1;
|
|
// }
|
|
// bb1: {
|
|
// falseUnwind -> [real: bb2, cleanup: bb3];
|
|
// }
|
|
// bb2: {
|
|
// StorageLive(_2);
|
|
// _2 = const true;
|
|
// StorageLive(_3);
|
|
// _3 = &'23_1rs _2;
|
|
// StorageLive(_5);
|
|
// _5 = _2;
|
|
// switchInt(move _5) -> [0u8: bb5, otherwise: bb4];
|
|
// }
|
|
// bb3: {
|
|
// ...
|
|
// }
|
|
// bb4: {
|
|
// _0 = ();
|
|
// StorageDead(_5);
|
|
// EndRegion('23_1rs);
|
|
// StorageDead(_3);
|
|
// StorageDead(_2);
|
|
// return;
|
|
// }
|
|
// bb5: {
|
|
// _4 = ();
|
|
// StorageDead(_5);
|
|
// StorageLive(_7);
|
|
// _7 = &'23_3rs _2;
|
|
// _1 = ();
|
|
// EndRegion('23_3rs);
|
|
// StorageDead(_7);
|
|
// EndRegion('23_1rs);
|
|
// StorageDead(_3);
|
|
// StorageDead(_2);
|
|
// goto -> bb1;
|
|
// }
|
|
// END rustc.main.SimplifyCfg-qualify-consts.after.mir
|