Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
| 2 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | \ |
| 3 | // RUN: FileCheck --check-prefix=MACHO %s |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 4 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 5 | // CHECK: @_ZN5test11A1aE = constant i32 10, align 4 |
| 6 | // CHECK: @_ZN5test212_GLOBAL__N_11AIiE1xE = internal global i32 0, align 4 |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 7 | // CHECK: @_ZN5test31AIiE1xE = weak_odr global i32 0, comdat, align 4 |
| 8 | // CHECK: @_ZGVN5test31AIiE1xE = weak_odr global i64 0, comdat($_ZN5test31AIiE1xE) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 9 | // MACHO: @_ZGVN5test31AIiE1xE = weak_odr global i64 0 |
| 10 | // MACHO-NOT: comdat |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 11 | |
Richard Smith | b9c64d8 | 2012-02-16 20:41:22 +0000 | [diff] [blame] | 12 | // CHECK: _ZN5test51U2k0E = global i32 0 |
| 13 | // CHECK: _ZN5test51U2k1E = global i32 0 |
| 14 | // CHECK: _ZN5test51U2k2E = constant i32 76 |
| 15 | // CHECK-NOT: test51U2k3E |
| 16 | // CHECK-NOT: test51U2k4E |
| 17 | |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 18 | // PR5564. |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 19 | namespace test1 { |
| 20 | struct A { |
| 21 | static const int a = 10; |
| 22 | }; |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 23 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 24 | const int A::a; |
Anders Carlsson | 3bb9269 | 2010-01-26 17:43:42 +0000 | [diff] [blame] | 25 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 26 | struct S { |
| 27 | static int i; |
| 28 | }; |
Anders Carlsson | a0d4b63 | 2009-09-02 21:01:21 +0000 | [diff] [blame] | 29 | |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 30 | void f() { |
| 31 | int a = S::i; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | // Test that we don't use guards for initializing template static data |
| 36 | // members with internal linkage. |
| 37 | namespace test2 { |
| 38 | int foo(); |
| 39 | |
| 40 | namespace { |
| 41 | template <class T> struct A { |
| 42 | static int x; |
| 43 | }; |
| 44 | |
| 45 | template <class T> int A<T>::x = foo(); |
| 46 | template struct A<int>; |
| 47 | } |
| 48 | |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 49 | // CHECK-LABEL: define internal void @__cxx_global_var_init() |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 50 | // CHECK: [[TMP:%.*]] = call i32 @_ZN5test23fooEv() |
| 51 | // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test212_GLOBAL__N_11AIiE1xE, align 4 |
| 52 | // CHECK-NEXT: ret void |
| 53 | } |
| 54 | |
| 55 | // Test that we don't use threadsafe statics when initializing |
| 56 | // template static data members. |
| 57 | namespace test3 { |
| 58 | int foo(); |
| 59 | |
| 60 | template <class T> struct A { |
| 61 | static int x; |
| 62 | }; |
| 63 | |
| 64 | template <class T> int A<T>::x = foo(); |
| 65 | template struct A<int>; |
| 66 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame] | 67 | // CHECK-LABEL: define internal void @__cxx_global_var_init1() {{.*}} comdat($_ZN5test31AIiE1xE) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 68 | // MACHO-LABEL: define internal void @__cxx_global_var_init1() |
| 69 | // MACHO-NOT: comdat |
Pirama Arumuga Nainar | 3ea9e33 | 2015-04-08 08:57:32 -0700 | [diff] [blame] | 70 | // CHECK: [[GUARDBYTE:%.*]] = load i8, i8* bitcast (i64* @_ZGVN5test31AIiE1xE to i8*) |
John McCall | 3030eb8 | 2010-11-06 09:44:32 +0000 | [diff] [blame] | 71 | // CHECK-NEXT: [[UNINITIALIZED:%.*]] = icmp eq i8 [[GUARDBYTE]], 0 |
| 72 | // CHECK-NEXT: br i1 [[UNINITIALIZED]] |
| 73 | // CHECK: [[TMP:%.*]] = call i32 @_ZN5test33fooEv() |
| 74 | // CHECK-NEXT: store i32 [[TMP]], i32* @_ZN5test31AIiE1xE, align 4 |
| 75 | // CHECK-NEXT: store i64 1, i64* @_ZGVN5test31AIiE1xE |
| 76 | // CHECK-NEXT: br label |
| 77 | // CHECK: ret void |
Anders Carlsson | a0d4b63 | 2009-09-02 21:01:21 +0000 | [diff] [blame] | 78 | } |
Richard Smith | c49bd11 | 2011-10-28 17:51:58 +0000 | [diff] [blame] | 79 | |
| 80 | // Test that we can fold member lookup expressions which resolve to static data |
| 81 | // members. |
| 82 | namespace test4 { |
| 83 | struct A { |
| 84 | static const int n = 76; |
| 85 | }; |
| 86 | |
| 87 | int f(A *a) { |
Stephen Lin | 93ab6bf | 2013-08-15 06:47:53 +0000 | [diff] [blame] | 88 | // CHECK-LABEL: define i32 @_ZN5test41fEPNS_1AE |
Richard Smith | c49bd11 | 2011-10-28 17:51:58 +0000 | [diff] [blame] | 89 | // CHECK: ret i32 76 |
| 90 | return a->n; |
| 91 | } |
| 92 | } |
Richard Smith | b9c64d8 | 2012-02-16 20:41:22 +0000 | [diff] [blame] | 93 | |
| 94 | // Test that static data members in unions behave properly. |
| 95 | namespace test5 { |
| 96 | union U { |
| 97 | static int k0; |
| 98 | static const int k1; |
| 99 | static const int k2 = 76; |
| 100 | static const int k3; |
| 101 | static const int k4 = 81; |
| 102 | }; |
| 103 | int U::k0; |
| 104 | const int U::k1 = (k0 = 9, 42); |
| 105 | const int U::k2; |
| 106 | |
| 107 | // CHECK: store i32 9, i32* @_ZN5test51U2k0E |
| 108 | // CHECK: store i32 {{.*}}, i32* @_ZN5test51U2k1E |
| 109 | // CHECK-NOT: store {{.*}} i32* @_ZN5test51U2k2E |
| 110 | } |