bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Merge commit 'ef07e8e60f' into sync_cg_clif-2023-04-29

Browse source
This commit is contained in:
bjorn3 2023-04-29 12:00:43 +00:00
commit a8697f9565
51 changed files with 1469 additions and 675 deletions
Download patch file Download diff file Expand all files Collapse all files

41
compiler/rustc_codegen_cranelift/example/dst-field-align.rs
View file

@ -2,7 +2,7 @@
#![allow(dead_code)]
struct Foo<T: ?Sized> {
a: u16,
b: T
b: T,
}
trait Bar {
@ -10,58 +10,57 @@ trait Bar {
}
impl Bar for usize {
fn get(&self) -> usize { *self }
fn get(&self) -> usize {
*self
}
}
struct Baz<T: ?Sized> {
a: T
a: T,
}
struct HasDrop<T: ?Sized> {
ptr: Box<usize>,
data: T
data: T,
}
fn main() {
// Test that zero-offset works properly
let b : Baz<usize> = Baz { a: 7 };
let b: Baz<usize> = Baz { a: 7 };
assert_eq!(b.a.get(), 7);
let b : &Baz<dyn Bar> = &b;
let b: &Baz<dyn Bar> = &b;
assert_eq!(b.a.get(), 7);
// Test that the field is aligned properly
let f : Foo<usize> = Foo { a: 0, b: 11 };
let f: Foo<usize> = Foo { a: 0, b: 11 };
assert_eq!(f.b.get(), 11);
let ptr1 : *const u8 = &f.b as *const _ as *const u8;
let ptr1: *const u8 = &f.b as *const _ as *const u8;
let f : &Foo<dyn Bar> = &f;
let ptr2 : *const u8 = &f.b as *const _ as *const u8;
let f: &Foo<dyn Bar> = &f;
let ptr2: *const u8 = &f.b as *const _ as *const u8;
assert_eq!(f.b.get(), 11);
// The pointers should be the same
assert_eq!(ptr1, ptr2);
// Test that nested DSTs work properly
let f : Foo<Foo<usize>> = Foo { a: 0, b: Foo { a: 1, b: 17 }};
let f: Foo<Foo<usize>> = Foo { a: 0, b: Foo { a: 1, b: 17 } };
assert_eq!(f.b.b.get(), 17);
let f : &Foo<Foo<dyn Bar>> = &f;
let f: &Foo<Foo<dyn Bar>> = &f;
assert_eq!(f.b.b.get(), 17);
// Test that get the pointer via destructuring works
let f : Foo<usize> = Foo { a: 0, b: 11 };
let f : &Foo<dyn Bar> = &f;
let f: Foo<usize> = Foo { a: 0, b: 11 };
let f: &Foo<dyn Bar> = &f;
let &Foo { a: _, b: ref bar } = f;
assert_eq!(bar.get(), 11);
// Make sure that drop flags don't screw things up
let d : HasDrop<Baz<[i32; 4]>> = HasDrop {
ptr: Box::new(0),
data: Baz { a: [1,2,3,4] }
};
assert_eq!([1,2,3,4], d.data.a);
let d: HasDrop<Baz<[i32; 4]>> = HasDrop { ptr: Box::new(0), data: Baz { a: [1, 2, 3, 4] } };
assert_eq!([1, 2, 3, 4], d.data.a);
let d : &HasDrop<Baz<[i32]>> = &d;
assert_eq!(&[1,2,3,4], &d.data.a);
let d: &HasDrop<Baz<[i32]>> = &d;
assert_eq!(&[1, 2, 3, 4], &d.data.a);
}