rust/tests/mir-opt/dataflow-const-prop/default_boxed_slice.main.GVN.32bit.panic-abort.diff

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- // MIR for `main` before GVN
+ // MIR for `main` after GVN
fn main() -> () {
let mut _0: ();
let _1: A;
let mut _2: std::boxed::Box<[bool]>;
scope 1 {
debug a => _1;
}
scope 2 (inlined <Box<[bool]> as Default>::default) {
let _3: std::ptr::Unique<[bool]>;
let mut _4: std::ptr::Unique<[bool; 0]>;
scope 3 {
debug ptr => _3;
}
scope 4 (inlined Unique::<[bool; 0]>::dangling) {
let mut _5: std::ptr::NonNull<[bool; 0]>;
scope 5 (inlined NonNull::<[bool; 0]>::dangling) {
let mut _7: usize;
scope 6 {
let _6: *mut [bool; 0];
scope 7 {
debug ptr => _6;
scope 11 (inlined NonNull::<[bool; 0]>::new_unchecked) {
debug ptr => _6;
let mut _8: *const [bool; 0];
scope 12 {
scope 13 (inlined NonNull::<T>::new_unchecked::runtime::<[bool; 0]>) {
debug ptr => _6;
scope 14 (inlined std::ptr::mut_ptr::<impl *mut [bool; 0]>::is_null) {
debug self => _6;
let mut _9: *mut u8;
scope 15 {
scope 16 (inlined std::ptr::mut_ptr::<impl *mut T>::is_null::runtime_impl) {
debug ptr => _9;
scope 17 (inlined std::ptr::mut_ptr::<impl *mut u8>::addr) {
debug self => _9;
scope 18 {
scope 19 (inlined std::ptr::mut_ptr::<impl *mut u8>::cast::<()>) {
debug self => _9;
}
}
}
}
}
}
}
}
}
}
scope 8 (inlined align_of::<[bool; 0]>) {
}
scope 9 (inlined invalid_mut::<[bool; 0]>) {
debug addr => _7;
scope 10 {
}
}
}
}
}
}
bb0: {
StorageLive(_1);
StorageLive(_2);
StorageLive(_3);
StorageLive(_4);
StorageLive(_5);
StorageLive(_6);
StorageLive(_7);
- _7 = AlignOf([bool; 0]);
- _6 = _7 as *mut [bool; 0] (Transmute);
+ _7 = const 1_usize;
+ _6 = const {0x1 as *mut [bool; 0]};
StorageDead(_7);
StorageLive(_8);
StorageLive(_9);
- _8 = _6 as *const [bool; 0] (PointerCoercion(MutToConstPointer));
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+ _8 = const {0x1 as *mut [bool; 0]} as *const [bool; 0] (PointerCoercion(MutToConstPointer));
_5 = NonNull::<[bool; 0]> { pointer: _8 };
StorageDead(_9);
StorageDead(_8);
StorageDead(_6);
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_4 = Unique::<[bool; 0]> { pointer: move _5, _marker: const PhantomData::<[bool; 0]> };
StorageDead(_5);
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_3 = move _4 as std::ptr::Unique<[bool]> (PointerCoercion(Unsize));
StorageDead(_4);
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_2 = Box::<[bool]>(_3, const std::alloc::Global);
StorageDead(_3);
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_1 = A { foo: move _2 };
StorageDead(_2);
_0 = const ();
drop(_1) -> [return: bb1, unwind unreachable];
}
bb1: {
StorageDead(_1);
return;
}
}