src/test/mir-opt/validate_1.rs

   1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // ignore-tidy-linelength
  12 // compile-flags: -Z verbose -Z mir-emit-validate=1 -Z span_free_formats
  13
  14 struct Test(i32);
  15
  16 impl Test {
  17     // Make sure we run the pass on a method, not just on bare functions.
  18     fn foo(&self, _x: &mut i32) {}
  19 }
  20
  21 fn main() {
  22     let mut x = 0;
  23     Test(0).foo(&mut x); // just making sure we do not panic when there is a tuple struct ctor
  24
  25     // Also test closures
  26     let c = |x: &mut i32| { let y = &*x; *y };
  27     c(&mut x);
  28 }
  29
  30 // END RUST SOURCE
  31 // START rustc.{{impl}}-foo.EraseRegions.after.mir
  32 //     bb0: {
  33 //         Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(0:5) => validate_1[317d]::{{impl}}[0]::foo[0] }, BrAnon(0)) Test, _2: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(0:5) => validate_1[317d]::{{impl}}[0]::foo[0] }, BrAnon(1)) mut i32]);
  34 //         ...
  35 //         return;
  36 //     }
  37 // END rustc.{{impl}}-foo.EraseRegions.after.mir
  38 // START rustc.main.EraseRegions.after.mir
  39 // fn main() -> () {
  40 //     ...
  41 //     bb0: {
  42 //         ...
  43 //         Validate(Suspend(ReScope(Node(ItemLocalId(10)))), [_1: i32]);
  44 //         _6 = &ReErased mut _1;
  45 //         Validate(Acquire, [(*_6): i32/ReScope(Node(ItemLocalId(10)))]);
  46 //         Validate(Suspend(ReScope(Node(ItemLocalId(10)))), [(*_6): i32/ReScope(Node(ItemLocalId(10)))]);
  47 //         _5 = &ReErased mut (*_6);
  48 //         Validate(Acquire, [(*_5): i32/ReScope(Node(ItemLocalId(10)))]);
  49 //         Validate(Release, [_2: (), _3: &ReScope(Node(ItemLocalId(10))) Test, _5: &ReScope(Node(ItemLocalId(10))) mut i32]);
  50 //         _2 = const Test::foo(_3, _5) -> bb1;
  51 //     }
  52 //
  53 //     bb1: {
  54 //         Validate(Acquire, [_2: ()]);
  55 //         EndRegion(ReScope(Node(ItemLocalId(10))));
  56 //         ...
  57 //         return;
  58 //     }
  59 // }
  60 // END rustc.main.EraseRegions.after.mir
  61 // START rustc.main-{{closure}}.EraseRegions.after.mir
  62 // fn main::{{closure}}(_1: &ReErased [closure@NodeId(50)], _2: &ReErased mut i32) -> i32 {
  63 //     ...
  64 //     bb0: {
  65 //         Validate(Acquire, [_1: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(1:11) => validate_1[317d]::main[0]::{{closure}}[0] }, BrEnv) [closure@NodeId(50)], _2: &ReFree(DefId { krate: CrateNum(0), index: DefIndex(1:11) => validate_1[317d]::main[0]::{{closure}}[0] }, BrAnon(0)) mut i32]);
  66 //         StorageLive(_3);
  67 //         Validate(Suspend(ReScope(Remainder(BlockRemainder { block: ItemLocalId(22), first_statement_index: 0 }))), [(*_2): i32]);
  68 //         _3 = &ReErased (*_2);
  69 //         Validate(Acquire, [(*_3): i32/ReScope(Remainder(BlockRemainder { block: ItemLocalId(22), first_statement_index: 0 })) (imm)]);
  70 //         StorageLive(_4);
  71 //         _4 = (*_3);
  72 //         _0 = _4;
  73 //         StorageDead(_4);
  74 //         EndRegion(ReScope(Remainder(BlockRemainder { block: ItemLocalId(22), first_statement_index: 0 })));
  75 //         StorageDead(_3);
  76 //         return;
  77 //     }
  78 // }
  79 // END rustc.main-{{closure}}.EraseRegions.after.mir