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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) {
scope 6 {
let _6: *mut [bool; 0];
scope 7 {
debug ptr => _6;
scope 12 (inlined NonNull::<[bool; 0]>::new_unchecked) {
debug ptr => _6;
let mut _8: bool;
let _9: ();
let mut _10: *mut ();
let mut _11: *const [bool; 0];
scope 13 {
}
}
}
scope 8 (inlined dangling_mut::<[bool; 0]>) {
let mut _7: usize;
scope 9 (inlined align_of::<[bool; 0]>) {
}
scope 10 (inlined without_provenance_mut::<[bool; 0]>) {
debug addr => _7;
scope 11 {
}
}
}
}
}
}
}
bb0: {
StorageLive(_1);
StorageLive(_2);
StorageLive(_3);
StorageLive(_9);
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(_11);
StorageLive(_8);
_8 = UbCheck(LanguageUb);
switchInt(move _8) -> [0: bb5, otherwise: bb3];
}
bb1: {
StorageDead(_1);
return;
}
bb2 (cleanup): {
resume;
}
bb3: {
StorageLive(_10);
- _10 = _6 as *mut () (PtrToPtr);
- _9 = NonNull::<T>::new_unchecked::precondition_check(move _10) -> [return: bb4, unwind unreachable];
+ _10 = const {0x1 as *mut ()};
+ _9 = NonNull::<T>::new_unchecked::precondition_check(const {0x1 as *mut ()}) -> [return: bb4, unwind unreachable];
}
bb4: {
StorageDead(_10);
goto -> bb5;
}
bb5: {
StorageDead(_8);
- _11 = _6 as *const [bool; 0] (PointerCoercion(MutToConstPointer));
- _5 = NonNull::<[bool; 0]> { pointer: _11 };
+ _11 = const {0x1 as *const [bool; 0]};
+ _5 = const NonNull::<[bool; 0]> {{ pointer: {0x1 as *const [bool; 0]} }};
StorageDead(_11);
StorageDead(_6);
- _4 = Unique::<[bool; 0]> { pointer: move _5, _marker: const PhantomData::<[bool; 0]> };
+ _4 = const Unique::<[bool; 0]> {{ pointer: NonNull::<[bool; 0]> {{ pointer: {0x1 as *const [bool; 0]} }}, _marker: PhantomData::<[bool; 0]> }};
StorageDead(_5);
- _3 = move _4 as std::ptr::Unique<[bool]> (PointerCoercion(Unsize));
+ _3 = const Unique::<[bool]> {{ pointer: NonNull::<[bool]> {{ pointer: Indirect { alloc_id: ALLOC0, offset: Size(0 bytes) }: *const [bool] }}, _marker: PhantomData::<[bool]> }};
StorageDead(_4);
- _2 = Box::<[bool]>(_3, const std::alloc::Global);
+ _2 = const Box::<[bool]>(Unique::<[bool]> {{ pointer: NonNull::<[bool]> {{ pointer: Indirect { alloc_id: ALLOC1, offset: Size(0 bytes) }: *const [bool] }}, _marker: PhantomData::<[bool]> }}, std::alloc::Global);
StorageDead(_9);
StorageDead(_3);
- _1 = A { foo: move _2 };
+ _1 = const A {{ foo: Box::<[bool]>(Unique::<[bool]> {{ pointer: NonNull::<[bool]> {{ pointer: Indirect { alloc_id: ALLOC2, offset: Size(0 bytes) }: *const [bool] }}, _marker: PhantomData::<[bool]> }}, std::alloc::Global) }};
StorageDead(_2);
_0 = const ();
drop(_1) -> [return: bb1, unwind: bb2];
}
+ }
+
+ ALLOC2 (size: 8, align: 4) {
+ 01 00 00 00 00 00 00 00 │ ........
+ }
+
+ ALLOC1 (size: 8, align: 4) {
+ 01 00 00 00 00 00 00 00 │ ........
+ }
+
+ ALLOC0 (size: 8, align: 4) {
+ 01 00 00 00 00 00 00 00 │ ........
}
|
