11fa1764ee
All the implementations of the trait already are `Copy`, and this seems to be enough to simplify the implementations enough to make the MIR inliner willing to inline basics like `Range::next`.
69 lines
4.2 KiB
Rust
69 lines
4.2 KiB
Rust
// MIR for `range_iter_next` after PreCodegen
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fn range_iter_next(_1: &mut std::ops::Range<u32>) -> Option<u32> {
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debug it => _1; // in scope 0 at $DIR/range_iter.rs:+0:24: +0:26
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let mut _0: std::option::Option<u32>; // return place in scope 0 at $DIR/range_iter.rs:+0:48: +0:59
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scope 1 (inlined iter::range::<impl Iterator for std::ops::Range<u32>>::next) { // at $DIR/range_iter.rs:11:8: 11:14
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debug self => _1; // in scope 1 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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scope 2 (inlined <std::ops::Range<u32> as iter::range::RangeIteratorImpl>::spec_next) { // at $SRC_DIR/core/src/iter/range.rs:LL:COL
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debug self => _1; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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let mut _2: &u32; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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let mut _3: &u32; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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let mut _4: bool; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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let _5: u32; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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let mut _6: u32; // in scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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scope 3 {
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debug old => _5; // in scope 3 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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scope 4 {
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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(_5); // scope 1 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageLive(_4); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageLive(_2); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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_2 = &((*_1).0: u32); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageLive(_3); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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_3 = &((*_1).1: u32); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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_4 = <u32 as PartialOrd>::lt(move _2, move _3) -> bb1; // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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// mir::Constant
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// + span: $SRC_DIR/core/src/iter/range.rs:LL:COL
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// + literal: Const { ty: for<'a, 'b> fn(&'a u32, &'b u32) -> bool {<u32 as PartialOrd>::lt}, val: Value(<ZST>) }
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}
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bb1: {
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StorageDead(_3); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageDead(_2); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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switchInt(move _4) -> [0: bb2, otherwise: bb3]; // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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}
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bb2: {
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_0 = Option::<u32>::None; // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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goto -> bb5; // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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}
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bb3: {
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_5 = ((*_1).0: u32); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageLive(_6); // scope 3 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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_6 = <u32 as Step>::forward_unchecked(_5, const 1_usize) -> bb4; // scope 4 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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// mir::Constant
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// + span: $SRC_DIR/core/src/iter/range.rs:LL:COL
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// + literal: Const { ty: unsafe fn(u32, usize) -> u32 {<u32 as Step>::forward_unchecked}, val: Value(<ZST>) }
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}
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bb4: {
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((*_1).0: u32) = move _6; // scope 3 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageDead(_6); // scope 3 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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_0 = Option::<u32>::Some(_5); // scope 3 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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goto -> bb5; // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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}
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bb5: {
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StorageDead(_4); // scope 2 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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StorageDead(_5); // scope 1 at $SRC_DIR/core/src/iter/range.rs:LL:COL
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return; // scope 0 at $DIR/range_iter.rs:+2:2: +2:2
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}
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}
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