| // 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"] |
| |
| pub struct Bytes { |
| a: u8, |
| b: u8, |
| c: u8, |
| d: u8, |
| } |
| |
| // CHECK-LABEL: small_array_alignment |
| // The array is stored as i32, but its alignment is lower, go with 1 byte to avoid target |
| // dependent alignment |
| #[no_mangle] |
| pub fn small_array_alignment(x: &mut [i8; 4]) { |
| // CHECK: [[VAR:%[0-9]+]] = load {{(\[4 x i8\]\*, )?}}[4 x i8]** %x |
| // CHECK: [[VAR2:%[0-9]+]] = bitcast [4 x i8]* [[VAR]] to i32* |
| // CHECK: store i32 %{{.*}}, i32* [[VAR2]], align 1 |
| *x = [0; 4]; |
| } |
| |
| // CHECK-LABEL: small_struct_alignment |
| // The struct is stored as i32, but its alignment is lower, go with 1 byte to avoid target |
| // dependent alignment |
| #[no_mangle] |
| pub fn small_struct_alignment(x: &mut Bytes) { |
| // CHECK: [[VAR:%[0-9]+]] = load {{(%Bytes\*, )?}}%Bytes** %x |
| // CHECK: [[VAR2:%[0-9]+]] = bitcast %Bytes* [[VAR]] to i32* |
| // CHECK: store i32 %{{.*}}, i32* [[VAR2]], align 1 |
| *x = Bytes { |
| a: 0, |
| b: 0, |
| c: 0, |
| d: 0, |
| }; |
| } |