os-rust/tests/mir-opt/const_prop/slice_len.rs

//@ test-mir-pass: GVN
//@ compile-flags: -Zmir-enable-passes=+InstSimplify-after-simplifycfg -Zdump-mir-exclude-alloc-bytes
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
// EMIT_MIR_FOR_EACH_BIT_WIDTH

// EMIT_MIR slice_len.main.GVN.diff
fn main() {
    // CHECK-LABEL: fn main(
    // CHECK: debug a => [[a:_.*]];
    // CHECK: [[slice:_.*]] = copy {{.*}} as &[u32] (PointerCoercion(Unsize, AsCast));
    // CHECK: assert(const true,
    // CHECK: [[a]] = const 2_u32;
    let a = (&[1u32, 2, 3] as &[u32])[1];
}