//@ compile-flags: -O -C no-prepopulate-passes #![crate_type = "lib"] #![feature(dyn_star)] #![feature(allocator_api)] use std::marker::PhantomPinned; use std::mem::MaybeUninit; use std::num::NonZero; use std::ptr::NonNull; pub struct S { _field: [i32; 8], } pub struct UnsafeInner { _field: std::cell::UnsafeCell, } pub struct NotUnpin { _field: i32, _marker: PhantomPinned, } pub enum MyBool { True, False, } // CHECK: noundef zeroext i1 @boolean(i1 noundef zeroext %x) #[no_mangle] pub fn boolean(x: bool) -> bool { x } // CHECK: i8 @maybeuninit_boolean(i8 %x) #[no_mangle] pub fn maybeuninit_boolean(x: MaybeUninit) -> MaybeUninit { x } // CHECK: noundef zeroext i1 @enum_bool(i1 noundef zeroext %x) #[no_mangle] pub fn enum_bool(x: MyBool) -> MyBool { x } // CHECK: i8 @maybeuninit_enum_bool(i8 %x) #[no_mangle] pub fn maybeuninit_enum_bool(x: MaybeUninit) -> MaybeUninit { x } // CHECK: noundef{{( range\(i32 0, 1114112\))?}} i32 @char(i32 noundef{{( range\(i32 0, 1114112\))?}} %x) #[no_mangle] pub fn char(x: char) -> char { x } // CHECK: i32 @maybeuninit_char(i32 %x) #[no_mangle] pub fn maybeuninit_char(x: MaybeUninit) -> MaybeUninit { x } // CHECK: noundef i64 @int(i64 noundef %x) #[no_mangle] pub fn int(x: u64) -> u64 { x } // CHECK: noundef{{( range\(i64 1, 0\))?}} i64 @nonzero_int(i64 noundef{{( range\(i64 1, 0\))?}} %x) #[no_mangle] pub fn nonzero_int(x: NonZero) -> NonZero { x } // CHECK: noundef i64 @option_nonzero_int(i64 noundef %x) #[no_mangle] pub fn option_nonzero_int(x: Option>) -> Option> { x } // CHECK: @readonly_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn readonly_borrow(_: &i32) {} // CHECK: noundef align 4 dereferenceable(4) ptr @readonly_borrow_ret() #[no_mangle] pub fn readonly_borrow_ret() -> &'static i32 { loop {} } // CHECK: @static_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1) // static borrow may be captured #[no_mangle] pub fn static_borrow(_: &'static i32) {} // CHECK: @named_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1) // borrow with named lifetime may be captured #[no_mangle] pub fn named_borrow<'r>(_: &'r i32) {} // CHECK: @unsafe_borrow(ptr noundef nonnull align 2 %_1) // unsafe interior means this isn't actually readonly and there may be aliases ... #[no_mangle] pub fn unsafe_borrow(_: &UnsafeInner) {} // CHECK: @mutable_unsafe_borrow(ptr noalias noundef align 2 dereferenceable(2) %_1) // ... unless this is a mutable borrow, those never alias #[no_mangle] pub fn mutable_unsafe_borrow(_: &mut UnsafeInner) {} // CHECK: @mutable_borrow(ptr noalias noundef align 4 dereferenceable(4) %_1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn mutable_borrow(_: &mut i32) {} // CHECK: noundef align 4 dereferenceable(4) ptr @mutable_borrow_ret() #[no_mangle] pub fn mutable_borrow_ret() -> &'static mut i32 { loop {} } #[no_mangle] // CHECK: @mutable_notunpin_borrow(ptr noundef nonnull align 4 %_1) // This one is *not* `noalias` because it might be self-referential. // It is also not `dereferenceable` due to // . pub fn mutable_notunpin_borrow(_: &mut NotUnpin) {} // CHECK: @notunpin_borrow(ptr noalias noundef readonly align 4 dereferenceable(4) %_1) // But `&NotUnpin` behaves perfectly normal. #[no_mangle] pub fn notunpin_borrow(_: &NotUnpin) {} // CHECK: @indirect_struct(ptr noalias nocapture noundef readonly align 4 dereferenceable(32) %_1) #[no_mangle] pub fn indirect_struct(_: S) {} // CHECK: @borrowed_struct(ptr noalias noundef readonly align 4 dereferenceable(32) %_1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn borrowed_struct(_: &S) {} // CHECK: @option_borrow(ptr noalias noundef readonly align 4 dereferenceable_or_null(4) %x) #[no_mangle] pub fn option_borrow(x: Option<&i32>) {} // CHECK: @option_borrow_mut(ptr noalias noundef align 4 dereferenceable_or_null(4) %x) #[no_mangle] pub fn option_borrow_mut(x: Option<&mut i32>) {} // CHECK: @raw_struct(ptr noundef %_1) #[no_mangle] pub fn raw_struct(_: *const S) {} // CHECK: @raw_option_nonnull_struct(ptr noundef %_1) #[no_mangle] pub fn raw_option_nonnull_struct(_: Option>) {} // `Box` can get deallocated during execution of the function, so it should // not get `dereferenceable`. // CHECK: noundef nonnull align 4 ptr @_box(ptr noalias noundef nonnull align 4 %x) #[no_mangle] pub fn _box(x: Box) -> Box { x } // With a custom allocator, it should *not* have `noalias`. (See // for why.) The second argument is the allocator, // which is a reference here that still carries `noalias` as usual. // CHECK: @_box_custom(ptr noundef nonnull align 4 %x.0, ptr noalias noundef nonnull readonly align 1 %x.1) #[no_mangle] pub fn _box_custom(x: Box) { drop(x) } // CHECK: noundef nonnull align 4 ptr @notunpin_box(ptr noundef nonnull align 4 %x) #[no_mangle] pub fn notunpin_box(x: Box) -> Box { x } // CHECK: @struct_return(ptr{{( dead_on_unwind)?}} noalias nocapture noundef{{( writable)?}} sret([32 x i8]) align 4 dereferenceable(32){{( %_0)?}}) #[no_mangle] pub fn struct_return() -> S { S { _field: [0, 0, 0, 0, 0, 0, 0, 0] } } // Hack to get the correct size for the length part in slices // CHECK: @helper([[USIZE:i[0-9]+]] noundef %_1) #[no_mangle] pub fn helper(_: usize) {} // CHECK: @slice(ptr noalias noundef nonnull readonly align 1 %_1.0, [[USIZE]] noundef %_1.1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn slice(_: &[u8]) {} // CHECK: @mutable_slice(ptr noalias noundef nonnull align 1 %_1.0, [[USIZE]] noundef %_1.1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn mutable_slice(_: &mut [u8]) {} // CHECK: @unsafe_slice(ptr noundef nonnull align 2 %_1.0, [[USIZE]] noundef %_1.1) // unsafe interior means this isn't actually readonly and there may be aliases ... #[no_mangle] pub fn unsafe_slice(_: &[UnsafeInner]) {} // CHECK: @raw_slice(ptr noundef %_1.0, [[USIZE]] noundef %_1.1) #[no_mangle] pub fn raw_slice(_: *const [u8]) {} // CHECK: @str(ptr noalias noundef nonnull readonly align 1 %_1.0, [[USIZE]] noundef %_1.1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn str(_: &[u8]) {} // CHECK: @trait_borrow(ptr noundef nonnull align 1 %_1.0, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}) %_1.1) // FIXME #25759 This should also have `nocapture` #[no_mangle] pub fn trait_borrow(_: &dyn Drop) {} // CHECK: @option_trait_borrow(ptr noundef align 1 %x.0, ptr %x.1) #[no_mangle] pub fn option_trait_borrow(x: Option<&dyn Drop>) {} // CHECK: @option_trait_borrow_mut(ptr noundef align 1 %x.0, ptr %x.1) #[no_mangle] pub fn option_trait_borrow_mut(x: Option<&mut dyn Drop>) {} // CHECK: @trait_raw(ptr noundef %_1.0, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}) %_1.1) #[no_mangle] pub fn trait_raw(_: *const dyn Drop) {} // CHECK: @trait_box(ptr noalias noundef nonnull align 1{{( %0)?}}, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}){{( %1)?}}) #[no_mangle] pub fn trait_box(_: Box) {} // CHECK: { ptr, ptr } @trait_option(ptr noalias noundef align 1 %x.0, ptr %x.1) #[no_mangle] pub fn trait_option(x: Option>) -> Option> { x } // CHECK: { ptr, [[USIZE]] } @return_slice(ptr noalias noundef nonnull readonly align 2 %x.0, [[USIZE]] noundef %x.1) #[no_mangle] pub fn return_slice(x: &[u16]) -> &[u16] { x } // CHECK: { i16, i16 } @enum_id_1(i16 noundef{{( range\(i16 0, 3\))?}} %x.0, i16 %x.1) #[no_mangle] pub fn enum_id_1(x: Option>) -> Option> { x } // CHECK: { i1, i8 } @enum_id_2(i1 noundef zeroext %x.0, i8 %x.1) #[no_mangle] pub fn enum_id_2(x: Option) -> Option { x } // CHECK: { ptr, {{.+}} } @dyn_star(ptr noundef %x.0, {{.+}} noalias noundef readonly align {{.*}} dereferenceable({{.*}}) %x.1) // Expect an ABI something like `{ {}*, [3 x i64]* }`, but that's hard to match on generically, // so do like the `trait_box` test and just match on `{{.+}}` for the vtable. #[no_mangle] pub fn dyn_star(x: dyn* Drop) -> dyn* Drop { x }