clang/test/CodeGen/partial-reinitialization1.c

   1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
   2
   3 struct P1 {
   4     struct Q1 {
   5       char a[6];
   6       char b[6];
   7     } q;
   8 };
   9
  10 // CHECK: { [6 x i8] c"foo\00\00\00", [6 x i8] c"\00x\00\00\00\00" }
  11 struct P1 l1 = {
  12     (struct Q1){ "foo", "bar" },
  13                .q.b = { "boo" },
  14                .q.b = { [1] = 'x' }
  15 };
  16
  17 // CHECK: { [6 x i8] c"foo\00\00\00", [6 x i8] c"bxo\00\00\00" }
  18 struct P1 l1a = {
  19     (struct Q1){ "foo", "bar" },
  20                .q.b = { "boo" },
  21                .q.b[1] = 'x'
  22 };
  23
  24
  25 struct P2 { char x[6]; };
  26
  27 // CHECK: { [6 x i8] c"n\00\00\00\00\00" }
  28 struct P2 l2 = {
  29   .x = { [1] = 'o' },
  30   .x = { [0] = 'n' }
  31 };
  32
  33 struct P3 {
  34     struct Q3 {
  35       struct R1 {
  36          int a, b, c;
  37       } r1;
  38
  39       struct R2 {
  40          int d, e, f;
  41       } r2;
  42     } q;
  43 };
  44
  45 // CHECK: @l3 ={{.*}} global %struct.P3 { %struct.Q3 { %struct.R1 { i32 1, i32 2, i32 3 }, %struct.R2 { i32 0, i32 10, i32 0 } } }
  46 struct P3 l3 = {
  47   (struct Q3){ { 1, 2, 3 }, { 4, 5, 6 } },
  48                     .q.r2 = { 7, 8, 9 },
  49                     .q.r2 = { .e = 10 }
  50 };
  51
  52 // This bit is taken from Sema/wchar.c so we can avoid the wchar.h include.
  53 typedef __WCHAR_TYPE__ wchar_t;
  54
  55 struct P4 {
  56     wchar_t x[6];
  57 };
  58
  59 // CHECK: { [6 x i32] [i32 102, i32 111, i32 120, i32 0, i32 0, i32 0] }
  60 struct P4 l4 = { { L"foo" }, .x[2] = L'x' };
  61
  62 struct P5 {
  63   int x;
  64   struct Q5 {
  65     int a, b, c;
  66   } q;
  67   int y;
  68 };
  69
  70 // A three-pass test
  71 // CHECK: @l5 ={{.*}} global %struct.P5 { i32 1, %struct.Q5 { i32 6, i32 9, i32 8 }, i32 5 }
  72 struct P5 l5 = { 1, { 2, 3, 4 }, 5,
  73                  .q = { 6, 7, 8 },
  74                  .q.b = 9 };