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//@ compile-flags: -O
//@ min-llvm-version: 17
#![crate_type = "lib"]
#[no_mangle]
// CHECK-LABEL: @foo
// CHECK: getelementptr inbounds
// CHECK-NEXT: load i64
// CHECK-NEXT: icmp eq i64
// CHECK-NEXT: br i1
#[no_mangle]
pub fn foo(input: &mut &[u64]) -> Option<u64> {
let (first, rest) = input.split_first()?;
*input = rest;
Some(*first)
}
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