1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // compile-flags: -C no-prepopulate-passes
13 #![crate_type = "lib"]
15 // Hack to get the correct size for the length part in slices
16 // CHECK: @helper([[USIZE:i[0-9]+]])
21 // CHECK-LABEL: @ref_dst
23 pub fn ref_dst(s: &[u8]) {
24 // We used to generate an extra alloca and memcpy to ref the dst, so check that we copy
25 // directly to the alloca for "x"
26 // CHECK: [[X0:%[0-9]+]] = getelementptr {{.*}} { i8*, [[USIZE]] }* %x, i32 0, i32 0
27 // CHECK: store i8* %0, i8** [[X0]]
28 // CHECK: [[X1:%[0-9]+]] = getelementptr {{.*}} { i8*, [[USIZE]] }* %x, i32 0, i32 1
29 // CHECK: store [[USIZE]] %1, [[USIZE]]* [[X1]]
32 &x; // keep variable in an alloca