| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // compile-flags: -C no-prepopulate-passes |
| |
| #![crate_type = "lib"] |
| |
| // Hack to get the correct size for the length part in slices |
| // CHECK: @helper([[USIZE:i[0-9]+]]) |
| #[no_mangle] |
| fn helper(_: usize) { |
| } |
| |
| // CHECK-LABEL: @ref_dst |
| #[no_mangle] |
| pub fn ref_dst(s: &[u8]) { |
| // We used to generate an extra alloca and memcpy to ref the dst, so check that we copy |
| // directly to the alloca for "x" |
| // CHECK: [[SRC:%[0-9]+]] = bitcast { i8*, [[USIZE]] }* %s to i8* |
| // CHECK: [[DST:%[0-9]+]] = bitcast { i8*, [[USIZE]] }* %x to i8* |
| // CHECK: call void @llvm.memcpy.{{.*}}(i8* [[DST]], i8* [[SRC]], |
| let x = &*s; |
| } |
