47 lines
1.5 KiB
Rust
47 lines
1.5 KiB
Rust
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// compile-flags: -Z mir-opt-level=3
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// EMIT_MIR lower_array_len.array_bound.NormalizeArrayLen.diff
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// EMIT_MIR lower_array_len.array_bound.SimplifyLocals.diff
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// EMIT_MIR lower_array_len.array_bound.InstCombine.diff
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pub fn array_bound<const N: usize>(index: usize, slice: &[u8; N]) -> u8 {
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if index < slice.len() {
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slice[index]
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} else {
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42
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}
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}
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// EMIT_MIR lower_array_len.array_bound_mut.NormalizeArrayLen.diff
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// EMIT_MIR lower_array_len.array_bound_mut.SimplifyLocals.diff
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// EMIT_MIR lower_array_len.array_bound_mut.InstCombine.diff
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pub fn array_bound_mut<const N: usize>(index: usize, slice: &mut [u8; N]) -> u8 {
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if index < slice.len() {
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slice[index]
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} else {
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slice[0] = 42;
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42
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}
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}
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// EMIT_MIR lower_array_len.array_len.NormalizeArrayLen.diff
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// EMIT_MIR lower_array_len.array_len.SimplifyLocals.diff
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// EMIT_MIR lower_array_len.array_len.InstCombine.diff
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pub fn array_len<const N: usize>(arr: &[u8; N]) -> usize {
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arr.len()
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}
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// EMIT_MIR lower_array_len.array_len_by_value.NormalizeArrayLen.diff
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// EMIT_MIR lower_array_len.array_len_by_value.SimplifyLocals.diff
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// EMIT_MIR lower_array_len.array_len_by_value.InstCombine.diff
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pub fn array_len_by_value<const N: usize>(arr: [u8; N]) -> usize {
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arr.len()
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}
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fn main() {
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let _ = array_bound(3, &[0, 1, 2, 3]);
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let mut tmp = [0, 1, 2, 3, 4];
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let _ = array_bound_mut(3, &mut [0, 1, 2, 3]);
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let _ = array_len(&[0]);
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let _ = array_len_by_value([0, 2]);
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}
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