src/test/codegen/align-struct.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // compile-flags: -C no-prepopulate-passes
  12 // ignore-tidy-linelength
  13
  14 #![crate_type = "lib"]
  15
  16 #[repr(align(64))]
  17 pub struct Align64(i32);
  18 // CHECK: %Align64 = type { [0 x i32], i32, [15 x i32] }
  19
  20 pub struct Nested64 {
  21     a: Align64,
  22     b: i32,
  23     c: i32,
  24     d: i8,
  25 }
  26 // CHECK: %Nested64 = type { [0 x i64], %Align64, [0 x i32], i32, [0 x i32], i32, [0 x i8], i8, [55 x i8] }
  27
  28 pub enum Enum4 {
  29     A(i32),
  30     B(i32),
  31 }
  32 // CHECK: %Enum4 = type { [0 x i32], i32, [1 x i32] }
  33 // CHECK: %"Enum4::A" = type { [1 x i32], i32, [0 x i32] }
  34
  35 pub enum Enum64 {
  36     A(Align64),
  37     B(i32),
  38 }
  39 // CHECK: %Enum64 = type { [0 x i32], i32, [31 x i32] }
  40 // CHECK: %"Enum64::A" = type { [8 x i64], %Align64, [0 x i64] }
  41
  42 // CHECK-LABEL: @align64
  43 #[no_mangle]
  44 pub fn align64(i : i32) -> Align64 {
  45 // CHECK: %a64 = alloca %Align64, align 64
  46 // CHECK: call void @llvm.memcpy.{{.*}}(i8* %{{.*}}, i8* %{{.*}}, i{{[0-9]+}} 64, i32 64, i1 false)
  47     let a64 = Align64(i);
  48     a64
  49 }
  50
  51 // CHECK-LABEL: @nested64
  52 #[no_mangle]
  53 pub fn nested64(a: Align64, b: i32, c: i32, d: i8) -> Nested64 {
  54 // CHECK: %n64 = alloca %Nested64, align 64
  55     let n64 = Nested64 { a, b, c, d };
  56     n64
  57 }
  58
  59 // CHECK-LABEL: @enum4
  60 #[no_mangle]
  61 pub fn enum4(a: i32) -> Enum4 {
  62 // CHECK: %e4 = alloca %Enum4, align 4
  63     let e4 = Enum4::A(a);
  64     e4
  65 }
  66
  67 // CHECK-LABEL: @enum64
  68 #[no_mangle]
  69 pub fn enum64(a: Align64) -> Enum64 {
  70 // CHECK: %e64 = alloca %Enum64, align 64
  71     let e64 = Enum64::A(a);
  72     e64
  73 }