| // compile-flags: -C no-prepopulate-passes |
| // ignore-tidy-linelength |
| |
| #![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], y: [i8; 4]) { |
| // CHECK: [[TMP:%.+]] = alloca i32 |
| // CHECK: %y = alloca [4 x i8] |
| // CHECK: store i32 %0, i32* [[TMP]] |
| // CHECK: [[Y8:%[0-9]+]] = bitcast [4 x i8]* %y to i8* |
| // CHECK: [[TMP8:%[0-9]+]] = bitcast i32* [[TMP]] to i8* |
| // CHECK: call void @llvm.memcpy.{{.*}}(i8* align 1 [[Y8]], i8* align 4 [[TMP8]], i{{[0-9]+}} 4, i1 false) |
| *x = y; |
| } |
| |
| // 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, y: Bytes) { |
| // CHECK: [[TMP:%.+]] = alloca i32 |
| // CHECK: %y = alloca %Bytes |
| // CHECK: store i32 %0, i32* [[TMP]] |
| // CHECK: [[Y8:%[0-9]+]] = bitcast %Bytes* %y to i8* |
| // CHECK: [[TMP8:%[0-9]+]] = bitcast i32* [[TMP]] to i8* |
| // CHECK: call void @llvm.memcpy.{{.*}}(i8* align 1 [[Y8]], i8* align 4 [[TMP8]], i{{[0-9]+}} 4, i1 false) |
| *x = y; |
| } |
