mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
441fd22557
rust/src/test/mir-opt/const_prop_miscompile.bar.ConstProp.diff

76 lines
5.3 KiB
Diff
Raw Normal View History

The const propagator cannot trace references. Thus we avoid propagation of a local the moment we encounter references to it.
2020-06-22 07:03:18 -05:00
- // MIR for `bar` before ConstProp
+ // MIR for `bar` after ConstProp
fn bar() -> () {
let mut _0: (); // return place in scope 0 at $DIR/const_prop_miscompile.rs:11:10: 11:10
let mut _1: (i32,); // in scope 0 at $DIR/const_prop_miscompile.rs:12:9: 12:14
let _2: (); // in scope 0 at $DIR/const_prop_miscompile.rs:13:5: 15:6
let mut _3: *mut i32; // in scope 0 at $DIR/const_prop_miscompile.rs:14:10: 14:22
let mut _5: i32; // in scope 0 at $DIR/const_prop_miscompile.rs:16:13: 16:20
scope 1 {
debug v => _1; // in scope 1 at $DIR/const_prop_miscompile.rs:12:9: 12:14
let _4: bool; // in scope 1 at $DIR/const_prop_miscompile.rs:16:9: 16:10
scope 2 {
}
scope 3 {
debug y => _4; // in scope 3 at $DIR/const_prop_miscompile.rs:16:9: 16:10
}
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/const_prop_miscompile.rs:12:9: 12:14
Show the values and computation that would overflow a const evaluation or propagation
2020-06-19 11:57:15 -05:00
- _1 = (const 1_i32,); // scope 0 at $DIR/const_prop_miscompile.rs:12:17: 12:21
+ _1 = const (1_i32,); // scope 0 at $DIR/const_prop_miscompile.rs:12:17: 12:21
The const propagator cannot trace references. Thus we avoid propagation of a local the moment we encounter references to it.
2020-06-22 07:03:18 -05:00
// ty::Const
- // + ty: i32
+ // + ty: (i32,)
// + val: Value(Scalar(0x00000001))
// mir::Constant
- // + span: $DIR/const_prop_miscompile.rs:12:18: 12:19
- // + literal: Const { ty: i32, val: Value(Scalar(0x00000001)) }
+ // + span: $DIR/const_prop_miscompile.rs:12:17: 12:21
+ // + literal: Const { ty: (i32,), val: Value(Scalar(0x00000001)) }
StorageLive(_2); // scope 1 at $DIR/const_prop_miscompile.rs:13:5: 15:6
StorageLive(_3); // scope 2 at $DIR/const_prop_miscompile.rs:14:10: 14:22
_3 = &raw mut (_1.0: i32); // scope 2 at $DIR/const_prop_miscompile.rs:14:10: 14:22
Show the values and computation that would overflow a const evaluation or propagation
2020-06-19 11:57:15 -05:00
(*_3) = const 5_i32; // scope 2 at $DIR/const_prop_miscompile.rs:14:9: 14:26
The const propagator cannot trace references. Thus we avoid propagation of a local the moment we encounter references to it.
2020-06-22 07:03:18 -05:00
// ty::Const
// + ty: i32
// + val: Value(Scalar(0x00000005))
// mir::Constant
// + span: $DIR/const_prop_miscompile.rs:14:25: 14:26
// + literal: Const { ty: i32, val: Value(Scalar(0x00000005)) }
StorageDead(_3); // scope 2 at $DIR/const_prop_miscompile.rs:14:26: 14:27
_2 = const (); // scope 2 at $DIR/const_prop_miscompile.rs:13:5: 15:6
// ty::Const
// + ty: ()
// + val: Value(Scalar(<ZST>))
// mir::Constant
// + span: $DIR/const_prop_miscompile.rs:13:5: 15:6
// + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
StorageDead(_2); // scope 1 at $DIR/const_prop_miscompile.rs:15:5: 15:6
StorageLive(_4); // scope 1 at $DIR/const_prop_miscompile.rs:16:9: 16:10
StorageLive(_5); // scope 1 at $DIR/const_prop_miscompile.rs:16:13: 16:20
_5 = (_1.0: i32); // scope 1 at $DIR/const_prop_miscompile.rs:16:15: 16:18
Show the values and computation that would overflow a const evaluation or propagation
2020-06-19 11:57:15 -05:00
_4 = Eq(move _5, const 5_i32); // scope 1 at $DIR/const_prop_miscompile.rs:16:13: 16:25
The const propagator cannot trace references. Thus we avoid propagation of a local the moment we encounter references to it.
2020-06-22 07:03:18 -05:00
// ty::Const
// + ty: i32
// + val: Value(Scalar(0x00000005))
// mir::Constant
// + span: $DIR/const_prop_miscompile.rs:16:24: 16:25
// + literal: Const { ty: i32, val: Value(Scalar(0x00000005)) }
StorageDead(_5); // scope 1 at $DIR/const_prop_miscompile.rs:16:24: 16:25
_0 = const (); // scope 0 at $DIR/const_prop_miscompile.rs:11:10: 17:2
// ty::Const
// + ty: ()
// + val: Value(Scalar(<ZST>))
// mir::Constant
// + span: $DIR/const_prop_miscompile.rs:11:10: 17:2
// + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
StorageDead(_4); // scope 1 at $DIR/const_prop_miscompile.rs:17:1: 17:2
StorageDead(_1); // scope 0 at $DIR/const_prop_miscompile.rs:17:1: 17:2
return; // scope 0 at $DIR/const_prop_miscompile.rs:17:2: 17:2
}
}
Reference in New Issue Copy Permalink