56 lines
1.5 KiB
Diff
56 lines
1.5 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: usize;
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let mut _5: usize;
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let mut _6: *mut u8;
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let mut _7: std::boxed::Box<i32>;
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let mut _8: *const i32;
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let mut _9: *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 = SizeOf(i32);
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- _5 = AlignOf(i32);
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- _6 = alloc::alloc::exchange_malloc(move _4, move _5) -> [return: bb1, unwind unreachable];
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+ _4 = const 4_usize;
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+ _5 = const 4_usize;
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+ _6 = alloc::alloc::exchange_malloc(const 4_usize, const 4_usize) -> [return: bb1, unwind unreachable];
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}
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bb1: {
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StorageLive(_7);
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_7 = ShallowInitBox(move _6, i32);
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_8 = (((_7.0: std::ptr::Unique<i32>).0: std::ptr::NonNull<i32>).0: *const i32);
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(*_8) = const 42_i32;
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_3 = move _7;
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StorageDead(_7);
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_9 = (((_3.0: std::ptr::Unique<i32>).0: std::ptr::NonNull<i32>).0: *const i32);
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_2 = (*_9);
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- _1 = Add(move _2, const 0_i32);
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- StorageDead(_2);
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+ _1 = _2;
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+ nop;
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drop(_3) -> [return: bb2, unwind unreachable];
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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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}
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