rust/tests/codegen/alloc-optimisation.rs

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//
// no-system-llvm
// compile-flags: -O
#![crate_type="lib"]
#[no_mangle]
pub fn alloc_test(data: u32) {
// CHECK-LABEL: @alloc_test
// CHECK-NEXT: start:
// CHECK-NEXT: ret void
let x = Box::new(data);
drop(x);
}