rust/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir
2023-06-23 18:36:25 +01:00

119 lines
2.9 KiB
Rust

// MIR for `int_range` after PreCodegen
fn int_range(_1: usize, _2: usize) -> () {
debug start => _1;
debug end => _2;
let mut _0: ();
let mut _3: std::ops::Range<usize>;
let mut _4: std::ops::Range<usize>;
let mut _5: &mut std::ops::Range<usize>;
let mut _11: std::option::Option<usize>;
let mut _14: isize;
let _16: ();
scope 1 {
debug iter => _4;
let _15: usize;
scope 2 {
debug i => _15;
}
scope 4 (inlined iter::range::<impl Iterator for std::ops::Range<usize>>::next) {
debug self => _5;
scope 5 (inlined <std::ops::Range<usize> as iter::range::RangeIteratorImpl>::spec_next) {
debug self => _5;
let mut _6: &usize;
let mut _7: &usize;
let mut _10: bool;
let _12: usize;
let mut _13: usize;
scope 6 {
debug old => _12;
scope 7 {
}
}
scope 8 (inlined cmp::impls::<impl PartialOrd for usize>::lt) {
debug self => _6;
debug other => _7;
let mut _8: usize;
let mut _9: usize;
}
}
}
}
scope 3 (inlined <std::ops::Range<usize> as IntoIterator>::into_iter) {
debug self => _3;
}
bb0: {
_3 = std::ops::Range::<usize> { start: _1, end: _2 };
StorageLive(_4);
_4 = move _3;
goto -> bb1;
}
bb1: {
StorageLive(_11);
_5 = &mut _4;
StorageLive(_12);
StorageLive(_10);
StorageLive(_6);
_6 = &((*_5).0: usize);
StorageLive(_7);
_7 = &((*_5).1: usize);
StorageLive(_8);
_8 = (*_6);
StorageLive(_9);
_9 = (*_7);
_10 = Lt(move _8, move _9);
StorageDead(_9);
StorageDead(_8);
StorageDead(_7);
StorageDead(_6);
switchInt(move _10) -> [0: bb2, otherwise: bb3];
}
bb2: {
_11 = Option::<usize>::None;
goto -> bb5;
}
bb3: {
_12 = ((*_5).0: usize);
StorageLive(_13);
_13 = <usize as Step>::forward_unchecked(_12, const 1_usize) -> [return: bb4, unwind continue];
}
bb4: {
((*_5).0: usize) = move _13;
StorageDead(_13);
_11 = Option::<usize>::Some(_12);
goto -> bb5;
}
bb5: {
StorageDead(_10);
StorageDead(_12);
_14 = discriminant(_11);
switchInt(move _14) -> [0: bb6, 1: bb7, otherwise: bb9];
}
bb6: {
StorageDead(_11);
StorageDead(_4);
return;
}
bb7: {
_15 = ((_11 as Some).0: usize);
_16 = opaque::<usize>(_15) -> [return: bb8, unwind continue];
}
bb8: {
StorageDead(_11);
goto -> bb1;
}
bb9: {
unreachable;
}
}