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test improvements

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This commit is contained in:
DrMeepster 2023-04-11 16:38:00 -07:00
parent 61f23e0003
commit b95852b93c
7 changed files with 147 additions and 24 deletions
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6
compiler/rustc_middle/src/mir/mod.rs
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@ -2048,7 +2048,11 @@ impl<'tcx> Debug for Rvalue<'tcx> {
}
UnaryOp(ref op, ref a) => write!(fmt, "{:?}({:?})", op, a),
Discriminant(ref place) => write!(fmt, "discriminant({:?})", place),
NullaryOp(ref op, ref t) => write!(fmt, "{:?}({:?})", op, t),
NullaryOp(ref op, ref t) => match op {
NullOp::SizeOf => write!(fmt, "SizeOf({:?})", t),
NullOp::AlignOf => write!(fmt, "AlignOf({:?})", t),
NullOp::OffsetOf(fields) => write!(fmt, "OffsetOf({:?}, {:?})", t, fields),
},
ThreadLocalRef(did) => ty::tls::with(|tcx| {
let muta = tcx.static_mutability(did).unwrap().prefix_str();
write!(fmt, "&/*tls*/ {}{}", muta, tcx.def_path_str(did))

21
library/core/tests/mem.rs
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@ -438,3 +438,24 @@ fn offset_of_dst() {
assert_eq!(offset_of!(Foo, x), 0);
assert_eq!(offset_of!(Foo, y), 2);
}
#[test]
#[cfg(not(bootstrap))]
fn offset_of_addr() {
#[repr(C)]
struct Foo {
x: u8,
y: u16,
z: Bar,
}
#[repr(C)]
struct Bar(u8, u8);
let base = Foo { x: 0, y: 0, z: Bar(0, 0) };
assert_eq!(ptr::addr_of!(base).addr() + offset_of!(Foo, x), ptr::addr_of!(base.x).addr());
assert_eq!(ptr::addr_of!(base).addr() + offset_of!(Foo, y), ptr::addr_of!(base.y).addr());
assert_eq!(ptr::addr_of!(base).addr() + offset_of!(Foo, z.0), ptr::addr_of!(base.z.0).addr());
assert_eq!(ptr::addr_of!(base).addr() + offset_of!(Foo, z.1), ptr::addr_of!(base.z.1).addr());
}

24
tests/mir-opt/const_prop/offset_of.main.ConstProp.diff → tests/mir-opt/const_prop/offset_of.concrete.ConstProp.diff
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@ -1,8 +1,8 @@
- // MIR for `main` before ConstProp
+ // MIR for `main` after ConstProp
- // MIR for `concrete` before ConstProp
+ // MIR for `concrete` after ConstProp
fn main() -> () {
let mut _0: (); // return place in scope 0 at $DIR/offset_of.rs:+0:11: +0:11
fn concrete() -> () {
let mut _0: (); // return place in scope 0 at $DIR/offset_of.rs:+0:15: +0:15
let _1: usize; // in scope 0 at $DIR/offset_of.rs:+1:9: +1:10
scope 1 {
debug x => _1; // in scope 1 at $DIR/offset_of.rs:+1:9: +1:10
@ -22,17 +22,17 @@
bb0: {
StorageLive(_1); // scope 0 at $DIR/offset_of.rs:+1:9: +1:10
- _1 = OffsetOf([0])(Foo); // scope 0 at $DIR/offset_of.rs:+1:13: +1:31
+ _1 = const 0_usize; // scope 0 at $DIR/offset_of.rs:+1:13: +1:31
- _1 = OffsetOf(Alpha, [0]); // scope 0 at $DIR/offset_of.rs:+1:13: +1:33
+ _1 = const 4_usize; // scope 0 at $DIR/offset_of.rs:+1:13: +1:33
StorageLive(_2); // scope 1 at $DIR/offset_of.rs:+2:9: +2:10
- _2 = OffsetOf([1])(Foo); // scope 1 at $DIR/offset_of.rs:+2:13: +2:31
+ _2 = const 2_usize; // scope 1 at $DIR/offset_of.rs:+2:13: +2:31
- _2 = OffsetOf(Alpha, [1]); // scope 1 at $DIR/offset_of.rs:+2:13: +2:33
+ _2 = const 0_usize; // scope 1 at $DIR/offset_of.rs:+2:13: +2:33
StorageLive(_3); // scope 2 at $DIR/offset_of.rs:+3:9: +3:11
- _3 = OffsetOf([2, 0])(Foo); // scope 2 at $DIR/offset_of.rs:+3:14: +3:34
+ _3 = const 4_usize; // scope 2 at $DIR/offset_of.rs:+3:14: +3:34
- _3 = OffsetOf(Alpha, [2, 0]); // scope 2 at $DIR/offset_of.rs:+3:14: +3:36
+ _3 = const 2_usize; // scope 2 at $DIR/offset_of.rs:+3:14: +3:36
StorageLive(_4); // scope 3 at $DIR/offset_of.rs:+4:9: +4:11
- _4 = OffsetOf([2, 1])(Foo); // scope 3 at $DIR/offset_of.rs:+4:14: +4:34
+ _4 = const 5_usize; // scope 3 at $DIR/offset_of.rs:+4:14: +4:34
- _4 = OffsetOf(Alpha, [2, 1]); // scope 3 at $DIR/offset_of.rs:+4:14: +4:36
+ _4 = const 3_usize; // scope 3 at $DIR/offset_of.rs:+4:14: +4:36
StorageDead(_4); // scope 3 at $DIR/offset_of.rs:+5:1: +5:2
StorageDead(_3); // scope 2 at $DIR/offset_of.rs:+5:1: +5:2
StorageDead(_2); // scope 1 at $DIR/offset_of.rs:+5:1: +5:2

39
tests/mir-opt/const_prop/offset_of.generic.ConstProp.diff Normal file
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@ -0,0 +1,39 @@
- // MIR for `generic` before ConstProp
+ // MIR for `generic` after ConstProp
fn generic() -> () {
let mut _0: (); // return place in scope 0 at $DIR/offset_of.rs:+0:17: +0:17
let _1: usize; // in scope 0 at $DIR/offset_of.rs:+1:9: +1:11
scope 1 {
debug gx => _1; // in scope 1 at $DIR/offset_of.rs:+1:9: +1:11
let _2: usize; // in scope 1 at $DIR/offset_of.rs:+2:9: +2:11
scope 2 {
debug gy => _2; // in scope 2 at $DIR/offset_of.rs:+2:9: +2:11
let _3: usize; // in scope 2 at $DIR/offset_of.rs:+3:9: +3:11
scope 3 {
debug dx => _3; // in scope 3 at $DIR/offset_of.rs:+3:9: +3:11
let _4: usize; // in scope 3 at $DIR/offset_of.rs:+4:9: +4:11
scope 4 {
debug dy => _4; // in scope 4 at $DIR/offset_of.rs:+4:9: +4:11
}
}
}
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/offset_of.rs:+1:9: +1:11
_1 = OffsetOf(Gamma<T>, [0]); // scope 0 at $DIR/offset_of.rs:+1:14: +1:37
StorageLive(_2); // scope 1 at $DIR/offset_of.rs:+2:9: +2:11
_2 = OffsetOf(Gamma<T>, [1]); // scope 1 at $DIR/offset_of.rs:+2:14: +2:37
StorageLive(_3); // scope 2 at $DIR/offset_of.rs:+3:9: +3:11
_3 = OffsetOf(Delta<T>, [1]); // scope 2 at $DIR/offset_of.rs:+3:14: +3:37
StorageLive(_4); // scope 3 at $DIR/offset_of.rs:+4:9: +4:11
_4 = OffsetOf(Delta<T>, [2]); // scope 3 at $DIR/offset_of.rs:+4:14: +4:37
StorageDead(_4); // scope 3 at $DIR/offset_of.rs:+5:1: +5:2
StorageDead(_3); // scope 2 at $DIR/offset_of.rs:+5:1: +5:2
StorageDead(_2); // scope 1 at $DIR/offset_of.rs:+5:1: +5:2
StorageDead(_1); // scope 0 at $DIR/offset_of.rs:+5:1: +5:2
return; // scope 0 at $DIR/offset_of.rs:+5:2: +5:2
}
}

44
tests/mir-opt/const_prop/offset_of.rs
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@ -1,25 +1,49 @@
// unit-test
// compile-flags: -O
// EMIT_MIR offset_of.main.ConstProp.diff
#![feature(offset_of)]
use std::marker::PhantomData;
use std::mem::offset_of;
#[repr(C)]
struct Foo {
struct Alpha {
x: u8,
y: u16,
z: Bar,
z: Beta,
}
struct Beta(u8, u8);
struct Gamma<T> {
x: u8,
y: u16,
_t: T,
}
#[repr(C)]
struct Bar(u8, u8);
struct Delta<T> {
_phantom: PhantomData<T>,
x: u8,
y: u16,
}
// EMIT_MIR offset_of.concrete.ConstProp.diff
fn concrete() {
let x = offset_of!(Alpha, x);
let y = offset_of!(Alpha, y);
let z0 = offset_of!(Alpha, z.0);
let z1 = offset_of!(Alpha, z.1);
}
// EMIT_MIR offset_of.generic.ConstProp.diff
fn generic<T>() {
let gx = offset_of!(Gamma<T>, x);
let gy = offset_of!(Gamma<T>, y);
let dx = offset_of!(Delta<T>, x);
let dy = offset_of!(Delta<T>, y);
}
fn main() {
let x = offset_of!(Foo, x);
let y = offset_of!(Foo, y);
let z0 = offset_of!(Foo, z.0);
let z1 = offset_of!(Foo, z.1);
concrete();
generic::<()>();
}

18
tests/ui/liveness/liveness-offset-of.rs
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@ -19,8 +19,26 @@ struct Gamma {
b: (),
}
struct Delta {
a: (),
b: (), //~ ERROR field `b` is never read
}
trait Trait {
type Assoc;
}
impl Trait for () {
type Assoc = Delta;
}
struct Project<T: Trait> {
a: u8, //~ ERROR field `a` is never read
b: <T as Trait>::Assoc,
}
fn main() {
offset_of!(Alpha, a);
offset_of!(Alpha, c.b);
offset_of!((Gamma,), 0.b);
offset_of!(Project::<()>, b.a);
}

19
tests/ui/liveness/liveness-offset-of.stderr
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@ -29,5 +29,22 @@ LL | struct Gamma {
LL | a: (),
| ^
error: aborting due to 3 previous errors
error: field `b` is never read
--> $DIR/liveness-offset-of.rs:24:5
|
LL | struct Delta {
| ----- field in this struct
LL | a: (),
LL | b: (),
| ^
error: field `a` is never read
--> $DIR/liveness-offset-of.rs:35:5
|
LL | struct Project<T: Trait> {
| ------- field in this struct
LL | a: u8,
| ^
error: aborting due to 5 previous errors