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Commit | Line | Data |
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62682a34 | 1 | // compile-flags: -C no-prepopulate-passes |
cdc7bbd5 | 2 | // |
62682a34 | 3 | |
b039eaaf SL |
4 | #![crate_type = "lib"] |
5 | ||
62682a34 SL |
6 | pub struct Bytes { |
7 | a: u8, | |
8 | b: u8, | |
9 | c: u8, | |
10 | d: u8, | |
11 | } | |
12 | ||
13 | // CHECK-LABEL: small_array_alignment | |
14 | // The array is stored as i32, but its alignment is lower, go with 1 byte to avoid target | |
15 | // dependent alignment | |
16 | #[no_mangle] | |
54a0048b | 17 | pub fn small_array_alignment(x: &mut [i8; 4], y: [i8; 4]) { |
a7813a04 | 18 | // CHECK: [[TMP:%.+]] = alloca i32 |
abe05a73 XL |
19 | // CHECK: %y = alloca [4 x i8] |
20 | // CHECK: store i32 %0, i32* [[TMP]] | |
21 | // CHECK: [[Y8:%[0-9]+]] = bitcast [4 x i8]* %y to i8* | |
a7813a04 | 22 | // CHECK: [[TMP8:%[0-9]+]] = bitcast i32* [[TMP]] to i8* |
a1dfa0c6 | 23 | // CHECK: call void @llvm.memcpy.{{.*}}(i8* align 1 [[Y8]], i8* align 4 [[TMP8]], i{{[0-9]+}} 4, i1 false) |
54a0048b | 24 | *x = y; |
62682a34 SL |
25 | } |
26 | ||
27 | // CHECK-LABEL: small_struct_alignment | |
28 | // The struct is stored as i32, but its alignment is lower, go with 1 byte to avoid target | |
29 | // dependent alignment | |
30 | #[no_mangle] | |
54a0048b | 31 | pub fn small_struct_alignment(x: &mut Bytes, y: Bytes) { |
a7813a04 | 32 | // CHECK: [[TMP:%.+]] = alloca i32 |
abe05a73 XL |
33 | // CHECK: %y = alloca %Bytes |
34 | // CHECK: store i32 %0, i32* [[TMP]] | |
35 | // CHECK: [[Y8:%[0-9]+]] = bitcast %Bytes* %y to i8* | |
a7813a04 | 36 | // CHECK: [[TMP8:%[0-9]+]] = bitcast i32* [[TMP]] to i8* |
a1dfa0c6 | 37 | // CHECK: call void @llvm.memcpy.{{.*}}(i8* align 1 [[Y8]], i8* align 4 [[TMP8]], i{{[0-9]+}} 4, i1 false) |
54a0048b | 38 | *x = y; |
62682a34 | 39 | } |