clang/test/CodeGen/pragma-pack-1.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 -emit-llvm -o - %s | FileCheck %s
   2
   3 // PR4610
   4 #pragma pack(4)
   5 struct ref {
   6         struct ref *next;
   7 } refs;
   8
   9 // PR13580
  10 struct S
  11 {
  12   char a[3];
  13 #pragma pack(1)
  14   struct T
  15   {
  16     char b;
  17     int c;
  18   } d;
  19 #pragma pack()
  20   struct T2
  21   {
  22     char b;
  23     int c;
  24   } d2;
  25 } ss;
  26
  27 struct S3
  28 {
  29   char a[3];
  30 #pragma pack(push, 2)
  31   struct T3
  32   {
  33     char b;
  34     int c;
  35   } d;
  36 #pragma pack(pop)
  37   struct T32
  38   {
  39     char b;
  40     int c;
  41   } e;
  42 } s3;
  43
  44 struct S4
  45 {
  46   char a[3];
  47 #pragma align=packed
  48   struct T4
  49   {
  50     char b;
  51     int c;
  52   } d;
  53   int e;
  54 } s4;
  55
  56 // CHECK: [[struct_ref:%[a-zA-Z0-9_.]+]] = type { ptr }
  57 // CHECK: [[struct_S:%[a-zA-Z0-9_.]+]] = type { [3 x i8], [[struct_T:%[a-zA-Z0-9_.]+]], [[struct_T2:%[a-zA-Z0-9_.]+]] }
  58 // CHECK: [[struct_T]] = type <{ i8, i32 }>
  59 // CHECK: [[struct_T2]] = type { i8, i32 }
  60
  61 // CHECK: %struct.S3 = type { [3 x i8], i8, %struct.T3, %struct.T32 }
  62 // CHECK: %struct.T3 = type <{ i8, i8, i32 }>
  63 // CHECK: %struct.T32 = type { i8, i32 }
  64 // CHECK: %struct.S4 = type { [3 x i8], %struct.T4, i32 }
  65 // CHECK: %struct.T4 = type <{ i8, i32 }>
  66
  67 // CHECK: @refs ={{.*}} global [[struct_ref]]
  68 // CHECK: @ss ={{.*}} global [[struct_S]]