rust/tests/mir-opt/pre-codegen/slice_index.rs

// skip-filecheck
// compile-flags: -O -C debuginfo=0 -Zmir-opt-level=2
// only-64bit
// ignore-debug the standard library debug assertions leak into this test
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY

#![crate_type = "lib"]

use std::ops::Range;

// EMIT_MIR slice_index.slice_index_usize.PreCodegen.after.mir
pub fn slice_index_usize(slice: &[u32], index: usize) -> u32 {
    slice[index]
}

// EMIT_MIR slice_index.slice_get_mut_usize.PreCodegen.after.mir
pub fn slice_get_mut_usize(slice: &mut [u32], index: usize) -> Option<&mut u32> {
    slice.get_mut(index)
}

// EMIT_MIR slice_index.slice_index_range.PreCodegen.after.mir
pub fn slice_index_range(slice: &[u32], index: Range<usize>) -> &[u32] {
    &slice[index]
}

// EMIT_MIR slice_index.slice_get_unchecked_mut_range.PreCodegen.after.mir
pub unsafe fn slice_get_unchecked_mut_range(slice: &mut [u32], index: Range<usize>) -> &mut [u32] {
    slice.get_unchecked_mut(index)
}