src/test/codegen/repr-transparent-aggregates-1.rs

   1 // compile-flags: -C no-prepopulate-passes
   2 //
   3
   4 // min-system-llvm-version: 12.0
   5 // ignore-arm
   6 // ignore-aarch64
   7 // ignore-mips
   8 // ignore-mips64
   9 // ignore-powerpc
  10 // ignore-powerpc64
  11 // ignore-riscv64 see codegen/riscv-abi
  12 // ignore-windows
  13 // See repr-transparent.rs
  14
  15 #![feature(transparent_unions)]
  16
  17 #![crate_type="lib"]
  18
  19
  20 #[derive(Clone, Copy)]
  21 #[repr(C)]
  22 pub struct BigS([u32; 16]);
  23
  24 #[repr(transparent)]
  25 pub struct TsBigS(BigS);
  26
  27 #[repr(transparent)]
  28 pub union TuBigS {
  29     field: BigS,
  30 }
  31
  32 #[repr(transparent)]
  33 pub enum TeBigS {
  34     Variant(BigS),
  35 }
  36
  37 // CHECK: define{{.*}}void @test_BigS(%BigS* [[BIGS_RET_ATTRS1:.*]] sret(%BigS) [[BIGS_RET_ATTRS2:.*]], %BigS* [[BIGS_ARG_ATTRS1:.*]] byval(%BigS) [[BIGS_ARG_ATTRS2:.*]])
  38 #[no_mangle]
  39 pub extern "C" fn test_BigS(_: BigS) -> BigS { loop {} }
  40
  41 // CHECK: define{{.*}}void @test_TsBigS(%TsBigS* [[BIGS_RET_ATTRS1]] sret(%TsBigS) [[BIGS_RET_ATTRS2]], %TsBigS* [[BIGS_ARG_ATTRS1]] byval(%TsBigS) [[BIGS_ARG_ATTRS2:.*]])
  42 #[no_mangle]
  43 pub extern "C" fn test_TsBigS(_: TsBigS) -> TsBigS { loop {} }
  44
  45 // CHECK: define{{.*}}void @test_TuBigS(%TuBigS* [[BIGS_RET_ATTRS1]] sret(%TuBigS) [[BIGS_RET_ATTRS2]], %TuBigS* [[BIGS_ARG_ATTRS1]] byval(%TuBigS) [[BIGS_ARG_ATTRS2:.*]])
  46 #[no_mangle]
  47 pub extern "C" fn test_TuBigS(_: TuBigS) -> TuBigS { loop {} }
  48
  49 // CHECK: define{{.*}}void @test_TeBigS(%"TeBigS::Variant"* [[BIGS_RET_ATTRS1]] sret(%"TeBigS::Variant") [[BIGS_RET_ATTRS2]], %"TeBigS::Variant"* [[BIGS_ARG_ATTRS1]] byval(%"TeBigS::Variant") [[BIGS_ARG_ATTRS2]])
  50 #[no_mangle]
  51 pub extern "C" fn test_TeBigS(_: TeBigS) -> TeBigS { loop {} }
  52
  53
  54 #[derive(Clone, Copy)]
  55 #[repr(C)]
  56 pub union BigU {
  57     foo: [u32; 16],
  58 }
  59
  60 #[repr(transparent)]
  61 pub struct TsBigU(BigU);
  62
  63 #[repr(transparent)]
  64 pub union TuBigU {
  65     field: BigU,
  66 }
  67
  68 #[repr(transparent)]
  69 pub enum TeBigU {
  70     Variant(BigU),
  71 }
  72
  73 // CHECK: define{{.*}}void @test_BigU(%BigU* [[BIGU_RET_ATTRS1:.*]] sret(%BigU) [[BIGU_RET_ATTRS2:.*]], %BigU* [[BIGU_ARG_ATTRS1:.*]] byval(%BigU) [[BIGU_ARG_ATTRS2:.*]])
  74 #[no_mangle]
  75 pub extern "C" fn test_BigU(_: BigU) -> BigU { loop {} }
  76
  77 // CHECK: define{{.*}}void @test_TsBigU(%TsBigU* [[BIGU_RET_ATTRS1:.*]] sret(%TsBigU) [[BIGU_RET_ATTRS2:.*]], %TsBigU* [[BIGU_ARG_ATTRS1]] byval(%TsBigU) [[BIGU_ARG_ATTRS2]])
  78 #[no_mangle]
  79 pub extern "C" fn test_TsBigU(_: TsBigU) -> TsBigU { loop {} }
  80
  81 // CHECK: define{{.*}}void @test_TuBigU(%TuBigU* [[BIGU_RET_ATTRS1]] sret(%TuBigU) [[BIGU_RET_ATTRS2:.*]], %TuBigU* [[BIGU_ARG_ATTRS1]] byval(%TuBigU) [[BIGU_ARG_ATTRS2]])
  82 #[no_mangle]
  83 pub extern "C" fn test_TuBigU(_: TuBigU) -> TuBigU { loop {} }
  84
  85 // CHECK: define{{.*}}void @test_TeBigU(%"TeBigU::Variant"* [[BIGU_RET_ATTRS1]] sret(%"TeBigU::Variant") [[BIGU_RET_ATTRS2:.*]], %"TeBigU::Variant"* [[BIGU_ARG_ATTRS1]] byval(%"TeBigU::Variant") [[BIGU_ARG_ATTRS2]])
  86 #[no_mangle]
  87 pub extern "C" fn test_TeBigU(_: TeBigU) -> TeBigU { loop {} }