rust/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir

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2023-02-05 13:10:33 -06:00
// MIR for `int_range` after PreCodegen
fn int_range(_1: usize, _2: usize) -> () {
debug start => _1; // in scope 0 at $DIR/loops.rs:+0:18: +0:23
debug end => _2; // in scope 0 at $DIR/loops.rs:+0:32: +0:35
let mut _0: (); // return place in scope 0 at $DIR/loops.rs:+0:44: +0:44
let mut _3: std::ops::Range<usize>; // in scope 0 at $DIR/loops.rs:+1:14: +1:24
let mut _4: std::ops::Range<usize>; // in scope 0 at $DIR/loops.rs:+1:14: +1:24
let mut _5: &mut std::ops::Range<usize>; // in scope 0 at $DIR/loops.rs:+1:14: +1:24
let mut _6: std::option::Option<usize>; // in scope 0 at $DIR/loops.rs:+1:14: +1:24
let mut _7: isize; // in scope 0 at $DIR/loops.rs:+1:5: +3:6
let _9: (); // in scope 0 at $DIR/loops.rs:+1:14: +1:24
scope 1 {
debug iter => _4; // in scope 1 at $DIR/loops.rs:+1:14: +1:24
let _8: usize; // in scope 1 at $DIR/loops.rs:+1:9: +1:10
scope 2 {
debug i => _8; // in scope 2 at $DIR/loops.rs:+1:9: +1:10
}
scope 4 (inlined iter::range::<impl Iterator for std::ops::Range<usize>>::next) { // at $DIR/loops.rs:7:14: 7:24
debug self => _5; // in scope 4 at $SRC_DIR/core/src/iter/range.rs:LL:COL
}
}
scope 3 (inlined <std::ops::Range<usize> as IntoIterator>::into_iter) { // at $DIR/loops.rs:7:14: 7:24
debug self => _3; // in scope 3 at $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
}
bb0: {
_3 = std::ops::Range::<usize> { start: _1, end: _2 }; // scope 0 at $DIR/loops.rs:+1:14: +1:24
StorageLive(_4); // scope 0 at $DIR/loops.rs:+1:14: +1:24
_4 = move _3; // scope 0 at $DIR/loops.rs:+1:14: +1:24
goto -> bb1; // scope 1 at $DIR/loops.rs:+1:5: +3:6
}
bb1: {
StorageLive(_6); // scope 1 at $DIR/loops.rs:+1:14: +1:24
_5 = &mut _4; // scope 1 at $DIR/loops.rs:+1:14: +1:24
_6 = <std::ops::Range<usize> as iter::range::RangeIteratorImpl>::spec_next(_5) -> bb2; // scope 4 at $SRC_DIR/core/src/iter/range.rs:LL:COL
// mir::Constant
// + span: $SRC_DIR/core/src/iter/range.rs:LL:COL
// + literal: Const { ty: for<'a> fn(&'a mut std::ops::Range<usize>) -> Option<<std::ops::Range<usize> as iter::range::RangeIteratorImpl>::Item> {<std::ops::Range<usize> as iter::range::RangeIteratorImpl>::spec_next}, val: Value(<ZST>) }
}
bb2: {
_7 = discriminant(_6); // scope 1 at $DIR/loops.rs:+1:14: +1:24
switchInt(move _7) -> [0: bb3, 1: bb4, otherwise: bb6]; // scope 1 at $DIR/loops.rs:+1:14: +1:24
}
bb3: {
StorageDead(_6); // scope 1 at $DIR/loops.rs:+3:5: +3:6
StorageDead(_4); // scope 0 at $DIR/loops.rs:+3:5: +3:6
return; // scope 0 at $DIR/loops.rs:+4:2: +4:2
}
bb4: {
_8 = ((_6 as Some).0: usize); // scope 1 at $DIR/loops.rs:+1:9: +1:10
_9 = opaque::<usize>(_8) -> bb5; // scope 2 at $DIR/loops.rs:+2:9: +2:18
// mir::Constant
// + span: $DIR/loops.rs:8:9: 8:15
// + literal: Const { ty: fn(usize) {opaque::<usize>}, val: Value(<ZST>) }
}
bb5: {
StorageDead(_6); // scope 1 at $DIR/loops.rs:+3:5: +3:6
goto -> bb1; // scope 1 at $DIR/loops.rs:+1:5: +3:6
}
bb6: {
unreachable; // scope 1 at $DIR/loops.rs:+1:14: +1:24
}
}