64 lines
1.9 KiB
Diff
64 lines
1.9 KiB
Diff
- // MIR for `main` before GVN
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+ // MIR for `main` after GVN
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fn main() -> () {
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let mut _0: ();
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let _1: i32;
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let mut _2: i32;
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let mut _3: std::boxed::Box<i32>;
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let mut _4: *mut u8;
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let mut _5: std::boxed::Box<i32>;
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let mut _6: *const i32;
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let mut _7: std::ptr::NonNull<i32>;
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let mut _8: std::ptr::Unique<i32>;
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let mut _9: *const i32;
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let mut _10: *const i32;
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scope 1 {
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debug x => _1;
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}
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bb0: {
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StorageLive(_1);
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- StorageLive(_2);
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+ nop;
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StorageLive(_3);
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_4 = alloc::alloc::exchange_malloc(const <i32 as std::mem::SizedTypeProperties>::SIZE, const <i32 as std::mem::SizedTypeProperties>::ALIGN) -> [return: bb1, unwind continue];
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}
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bb1: {
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StorageLive(_5);
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- _6 = move _4 as *const i32 (Transmute);
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- _7 = NonNull::<i32> { pointer: move _6 };
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- _8 = Unique::<i32> { pointer: move _7, _marker: const PhantomData::<i32> };
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+ _6 = copy _4 as *const i32 (PtrToPtr);
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+ _7 = NonNull::<i32> { pointer: copy _6 };
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+ _8 = Unique::<i32> { pointer: copy _7, _marker: const PhantomData::<i32> };
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_5 = Box::<i32>(move _8, const std::alloc::Global);
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- _9 = copy ((_5.0: std::ptr::Unique<i32>).0: std::ptr::NonNull<i32>) as *const i32 (Transmute);
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- (*_9) = const 42_i32;
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+ _9 = copy _6;
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+ (*_6) = const 42_i32;
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_3 = move _5;
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StorageDead(_5);
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_10 = copy ((_3.0: std::ptr::Unique<i32>).0: std::ptr::NonNull<i32>) as *const i32 (Transmute);
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_2 = copy (*_10);
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- _1 = Add(move _2, const 0_i32);
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- StorageDead(_2);
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+ _1 = copy _2;
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+ nop;
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drop(_3) -> [return: bb2, unwind: bb3];
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}
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bb2: {
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StorageDead(_3);
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_0 = const ();
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StorageDead(_1);
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return;
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}
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bb3 (cleanup): {
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resume;
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}
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}
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