1 // RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s
2 
3 template<typename T>
4 struct S {
5   static int n;
6 };
7 template<typename T> int S<T>::n = 5;
8 
9 int f() {
10   // Make sure that the reference here is enough to trigger the instantiation of
11   // the static data member.
12   // CHECK: @_ZN1SIiE1nE = linkonce_odr global i32 5
13   int a[S<int>::n];
14   return sizeof a;
15 }
16 
17 // rdar://problem/9506377
18 void test0(void *array, int n) {
19   // CHECK-LABEL: define void @_Z5test0Pvi(
20   // CHECK:      [[ARRAY:%.*]] = alloca i8*, align 8
21   // CHECK-NEXT: [[N:%.*]] = alloca i32, align 4
22   // CHECK-NEXT: [[REF:%.*]] = alloca i16*, align 8
23   // CHECK-NEXT: [[S:%.*]] = alloca i16, align 2
24   // CHECK-NEXT: store i8*
25   // CHECK-NEXT: store i32
26 
27   // Capture the bounds.
28   // CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[N]], align 4
29   // CHECK-NEXT: [[DIM0:%.*]] = zext i32 [[T0]] to i64
30   // CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[N]], align 4
31   // CHECK-NEXT: [[T1:%.*]] = add nsw i32 [[T0]], 1
32   // CHECK-NEXT: [[DIM1:%.*]] = zext i32 [[T1]] to i64
33   typedef short array_t[n][n+1];
34 
35   // CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[ARRAY]], align 8
36   // CHECK-NEXT: [[T1:%.*]] = bitcast i8* [[T0]] to i16*
37   // CHECK-NEXT: store i16* [[T1]], i16** [[REF]], align 8
38   array_t &ref = *(array_t*) array;
39 
40   // CHECK-NEXT: [[T0:%.*]] = load i16*, i16** [[REF]]
41   // CHECK-NEXT: [[T1:%.*]] = mul nsw i64 1, [[DIM1]]
42   // CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i16, i16* [[T0]], i64 [[T1]]
43   // CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i16, i16* [[T2]], i64 2
44   // CHECK-NEXT: store i16 3, i16* [[T3]]
45   ref[1][2] = 3;
46 
47   // CHECK-NEXT: [[T0:%.*]] = load i16*, i16** [[REF]]
48   // CHECK-NEXT: [[T1:%.*]] = mul nsw i64 4, [[DIM1]]
49   // CHECK-NEXT: [[T2:%.*]] = getelementptr inbounds i16, i16* [[T0]], i64 [[T1]]
50   // CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i16, i16* [[T2]], i64 5
51   // CHECK-NEXT: [[T4:%.*]] = load i16, i16* [[T3]]
52   // CHECK-NEXT: store i16 [[T4]], i16* [[S]], align 2
53   short s = ref[4][5];
54 
55   // CHECK-NEXT: ret void
56 }
57