John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 2 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 3 | // CHECK: @_ZN5test11A1aE = constant i32 10, align 4 |
| 4 | // CHECK: @_ZN5test212_GLOBAL__N_11AIiE1xE = internal global i32 0, align 4 |
John McCall | 99ace16 | 2011-04-12 01:46:54 +0000 | [diff] [blame] | 5 | // CHECK: @_ZN5test31AIiE1xE = weak_odr global i32 0, align 4 |
| 6 | // CHECK: @_ZGVN5test31AIiE1xE = weak_odr global i64 0 |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 7 | |
| 8 | // PR5564. |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 9 | namespace test1 { |
| 10 | struct A { |
| 11 | static const int a = 10; |
| 12 | }; |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 13 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 14 | const int A::a; |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 15 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 16 | struct S { |
| 17 | static int i; |
| 18 | }; |
Anders Carlsson | a0d4b63 | 2009-09-02 21:01:21 +0000 | [diff] [blame] | 19 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 20 | void f() { |
| 21 | int a = S::i; |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | // Test that we don't use guards for initializing template static data |
| 26 | // members with internal linkage. |
| 27 | namespace test2 { |
| 28 | int foo(); |
| 29 | |
| 30 | namespace { |
| 31 | template <class T> struct A { |
| 32 | static int x; |
| 33 | }; |
| 34 | |
| 35 | template <class T> int A<T>::x = foo(); |
| 36 | template struct A<int>; |
| 37 | } |
| 38 | |
| 39 | // CHECK: define internal void @__cxx_global_var_init() |
| 40 | // CHECK: [[TMP:%.*]] = call i32 @_ZN5test23fooEv() |
| 41 | // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test212_GLOBAL__N_11AIiE1xE, align 4 |
| 42 | // CHECK-NEXT: ret void |
| 43 | } |
| 44 | |
| 45 | // Test that we don't use threadsafe statics when initializing |
| 46 | // template static data members. |
| 47 | namespace test3 { |
| 48 | int foo(); |
| 49 | |
| 50 | template <class T> struct A { |
| 51 | static int x; |
| 52 | }; |
| 53 | |
| 54 | template <class T> int A<T>::x = foo(); |
| 55 | template struct A<int>; |
| 56 | |
| 57 | // CHECK: define internal void @__cxx_global_var_init1() |
| 58 | // CHECK: [[GUARDBYTE:%.*]] = load i8* bitcast (i64* @_ZGVN5test31AIiE1xE to i8*) |
| 59 | // CHECK-NEXT: [[UNINITIALIZED:%.*]] = icmp eq i8 [[GUARDBYTE]], 0 |
| 60 | // CHECK-NEXT: br i1 [[UNINITIALIZED]] |
| 61 | // CHECK: [[TMP:%.*]] = call i32 @_ZN5test33fooEv() |
| 62 | // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test31AIiE1xE, align 4 |
| 63 | // CHECK-NEXT: store i64 1, i64* @_ZGVN5test31AIiE1xE |
| 64 | // CHECK-NEXT: br label |
| 65 | // CHECK: ret void |
Anders Carlsson | a0d4b63 | 2009-09-02 21:01:21 +0000 | [diff] [blame] | 66 | } |
Richard Smith | c49bd11 | 2011-10-28 17:51:58 +0000 | [diff] [blame^] | 67 | |
| 68 | // Test that we can fold member lookup expressions which resolve to static data |
| 69 | // members. |
| 70 | namespace test4 { |
| 71 | struct A { |
| 72 | static const int n = 76; |
| 73 | }; |
| 74 | |
| 75 | int f(A *a) { |
| 76 | // CHECK: define i32 @_ZN5test41fEPNS_1AE |
| 77 | // CHECK: ret i32 76 |
| 78 | return a->n; |
| 79 | } |
| 80 | } |