39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
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// compile-flags: -O -C debuginfo=0 -Zmir-opt-level=2
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// only-64bit
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// ignore-debug
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#![crate_type = "lib"]
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// When this test was added, the MIR for `next` was 174 lines just for the basic
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// blocks -- far more if you counted the scopes. The goal of having this here
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// is to hopefully keep it a reasonable size, ideally eventually small enough
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// that the mir inliner would actually be willing to inline it, since it's an
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// important building block and usually very few *backend* instructions.
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// As such, feel free to `--bless` whatever changes you get here, so long as
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// doing so doesn't add substantially more MIR.
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// EMIT_MIR slice_iter.slice_iter_next.PreCodegen.after.mir
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pub fn slice_iter_next<'a, T>(it: &mut std::slice::Iter<'a, T>) -> Option<&'a T> {
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it.next()
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}
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// EMIT_MIR slice_iter.slice_iter_mut_next_back.PreCodegen.after.mir
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pub fn slice_iter_mut_next_back<'a, T>(it: &mut std::slice::IterMut<'a, T>) -> Option<&'a mut T> {
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it.next_back()
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}
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// EMIT_MIR slice_iter.forward_loop.PreCodegen.after.mir
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pub fn forward_loop<'a, T>(slice: &'a [T], f: impl Fn(&T)) {
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for x in slice.iter() {
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f(x)
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}
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}
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// EMIT_MIR slice_iter.reverse_loop.PreCodegen.after.mir
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pub fn reverse_loop<'a, T>(slice: &'a [T], f: impl Fn(&T)) {
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for x in slice.iter().rev() {
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f(x)
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}
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}
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