2015-10-01 11:55:52 +02:00
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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2016-03-10 21:20:09 +02:00
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#![feature(rustc_attrs)]
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2015-10-01 11:55:52 +02:00
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// Hack to get the correct size for the length part in slices
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// CHECK: @helper([[USIZE:i[0-9]+]])
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#[no_mangle]
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fn helper(_: usize) {
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}
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// CHECK-LABEL: @ref_dst
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#[no_mangle]
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2016-03-10 21:20:09 +02:00
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#[rustc_no_mir] // FIXME #27840 MIR has different codegen.
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2015-10-01 11:55:52 +02:00
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pub fn ref_dst(s: &[u8]) {
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// We used to generate an extra alloca and memcpy to ref the dst, so check that we copy
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// directly to the alloca for "x"
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// CHECK: [[SRC:%[0-9]+]] = bitcast { i8*, [[USIZE]] }* %s to i8*
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// CHECK: [[DST:%[0-9]+]] = bitcast { i8*, [[USIZE]] }* %x to i8*
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// CHECK: call void @llvm.memcpy.{{.*}}(i8* [[DST]], i8* [[SRC]],
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let x = &*s;
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}
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