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2beabbbf6f
It makes it sound like the `ExprKind` and `Rvalue` are supposed to represent all pointer related casts, when in reality their just used to share a some enum variants. Make it clear there these are only coercion to make it clear why only some pointer related "casts" are in the enum.
130 lines
3.5 KiB
Diff
130 lines
3.5 KiB
Diff
- // MIR for `main` before CopyProp
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+ // MIR for `main` after CopyProp
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fn main() -> () {
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let mut _0: ();
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let mut _1: i32;
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let mut _3: std::ops::Range<usize>;
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let mut _4: std::ops::Range<usize>;
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let mut _5: usize;
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let mut _6: &[i32];
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let mut _7: &[i32; 4];
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let mut _9: ();
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let _10: ();
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let mut _11: std::option::Option<usize>;
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let mut _12: &mut std::ops::Range<usize>;
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let mut _13: &mut std::ops::Range<usize>;
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let mut _14: isize;
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let mut _15: !;
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let mut _17: i32;
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let _18: usize;
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let mut _19: usize;
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let mut _20: bool;
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scope 1 {
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debug sum => _1;
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let _2: [i32; 4];
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scope 2 {
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debug a => _2;
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let mut _8: std::ops::Range<usize>;
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scope 3 {
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debug iter => _8;
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let _16: usize;
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scope 4 {
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debug i => _16;
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}
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}
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}
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}
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bb0: {
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StorageLive(_1);
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_1 = const 0_i32;
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StorageLive(_2);
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_2 = [const 0_i32, const 10_i32, const 20_i32, const 30_i32];
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StorageLive(_3);
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StorageLive(_4);
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StorageLive(_5);
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StorageLive(_6);
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StorageLive(_7);
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_7 = &_2;
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_6 = move _7 as &[i32] (PointerCoercion(Unsize));
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StorageDead(_7);
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_5 = core::slice::<impl [i32]>::len(move _6) -> [return: bb1, unwind unreachable];
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}
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bb1: {
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StorageDead(_6);
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_4 = std::ops::Range::<usize> { start: const 0_usize, end: move _5 };
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StorageDead(_5);
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_3 = <std::ops::Range<usize> as IntoIterator>::into_iter(move _4) -> [return: bb2, unwind unreachable];
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}
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bb2: {
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StorageDead(_4);
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StorageLive(_8);
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_8 = move _3;
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goto -> bb3;
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}
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bb3: {
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- StorageLive(_10);
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StorageLive(_11);
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StorageLive(_12);
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StorageLive(_13);
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_13 = &mut _8;
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_12 = &mut (*_13);
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_11 = <std::ops::Range<usize> as Iterator>::next(move _12) -> [return: bb4, unwind unreachable];
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}
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bb4: {
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StorageDead(_12);
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_14 = discriminant(_11);
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switchInt(move _14) -> [0: bb7, 1: bb5, otherwise: bb6];
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}
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bb5: {
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- StorageLive(_16);
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_16 = ((_11 as Some).0: usize);
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StorageLive(_17);
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- StorageLive(_18);
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- _18 = _16;
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_19 = Len(_2);
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- _20 = Lt(_18, _19);
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- assert(move _20, "index out of bounds: the length is {} but the index is {}", move _19, _18) -> [success: bb8, unwind unreachable];
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+ _20 = Lt(_16, _19);
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+ assert(move _20, "index out of bounds: the length is {} but the index is {}", move _19, _16) -> [success: bb8, unwind unreachable];
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}
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bb6: {
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unreachable;
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}
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bb7: {
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_0 = const ();
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StorageDead(_13);
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StorageDead(_11);
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- StorageDead(_10);
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StorageDead(_8);
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StorageDead(_3);
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StorageDead(_2);
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StorageDead(_1);
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return;
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}
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bb8: {
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- _17 = _2[_18];
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+ _17 = _2[_16];
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_1 = Add(_1, move _17);
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StorageDead(_17);
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- StorageDead(_18);
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- _10 = const ();
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- StorageDead(_16);
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StorageDead(_13);
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StorageDead(_11);
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- StorageDead(_10);
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- _9 = const ();
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goto -> bb3;
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}
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}
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