clang/test/CodeGen/mms-bitfields.c

   1 // RUN: %clang_cc1 -triple i386-apple-darwin10 -mms-bitfields -emit-llvm %s -o - | FileCheck %s
   2
   3 struct s1 {
   4   int       f32;
   5   long long f64;
   6 } s1;
   7
   8 // CHECK: %struct.s1 = type { i32, [4 x i8], i64 }
   9
  10 struct s2 {
  11   int       f32;
  12   long long f64[4];
  13 } s2;
  14
  15 // CHECK: %struct.s2 = type { i32, [4 x i8], [4 x i64] }
  16
  17 struct s3 {
  18   int       f32;
  19   struct s1 s;
  20 } s3;
  21
  22 // CHECK: %struct.s3 = type { i32, [4 x i8], %struct.s1 }
  23
  24 // PR32482:
  25
  26 #pragma pack (push,1)
  27
  28 typedef unsigned int UINT32;
  29
  30 struct Inner {
  31   UINT32    A    :  1;
  32   UINT32    B    :  1;
  33   UINT32    C    :  1;
  34   UINT32    D    : 30;
  35 } Inner;
  36
  37 #pragma pack (pop)
  38
  39 // CHECK: %struct.Inner = type { i32, i32 }
  40
  41 // CHECK: %struct.A = type { i32, i32, i32 }
  42
  43 #pragma pack(push, 1)
  44
  45 union HEADER {
  46   struct A {
  47     int                                         :  3;  // Bits 2:0
  48     int a                                       :  9;  // Bits 11:3
  49     int                                         :  12;  // Bits 23:12
  50     int b                                       :  17;  // Bits 40:24
  51     int                                         :  7;  // Bits 47:41
  52     int c                                       :  4;  // Bits 51:48
  53     int                                         :  4;  // Bits 55:52
  54     int d                                       :  3;  // Bits 58:56
  55     int                                         :  5;  // Bits 63:59
  56   } Bits;
  57 } HEADER;
  58
  59 #pragma pack(pop)
  60
  61 struct Inner variable = { 1,0,1, 21 };
  62 union HEADER hdr = {{1,2,3,4}};
  63
  64 // CHECK: @variable ={{.*}} global { i8, [3 x i8], i8, i8, i8, i8 } { i8 5, [3 x i8] zeroinitializer, i8 21, i8 0, i8 0, i8 0 }, align 1
  65 // CHECK: @hdr ={{.*}} global { { i8, i8, [2 x i8], i8, i8, i8, i8, i8, [3 x i8] } } { { i8, i8, [2 x i8], i8, i8, i8, i8, i8, [3 x i8] } { i8 8, i8 0, [2 x i8] zeroinitializer, i8 2, i8 0, i8 0, i8 3, i8 4, [3 x i8] zeroinitializer } }, align 1