// RUN: %clang_cc1 -fms-extensions -fno-threadsafe-statics -emit-llvm %s -o - -mconstructor-aliases -triple=i386-pc-win32 | FileCheck %s
// CHECK: @llvm.global_ctors = appending global [5 x { i32, ptr, ptr }] [
// CHECK: { i32, ptr, ptr } { i32 65535, ptr @"??__Eselectany1@@YAXXZ", ptr @"?selectany1@@3US@@A" },
// CHECK: { i32, ptr, ptr } { i32 65535, ptr @"??__Eselectany2@@YAXXZ", ptr @"?selectany2@@3US@@A" },
// CHECK: { i32, ptr, ptr } { i32 65535, ptr @"??__E?s@?$ExportedTemplate@H@@2US@@A@@YAXXZ", ptr @"?s@?$ExportedTemplate@H@@2US@@A" },
// CHECK: { i32, ptr, ptr } { i32 65535, ptr @"??__E?foo@?$B@H@@2VA@@A@@YAXXZ", ptr @"?foo@?$B@H@@2VA@@A" },
// CHECK: { i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp, ptr null }
// CHECK: ]
struct S {
S();
~S();
};
S s;
// CHECK: define internal void @"??__Es@@YAXXZ"()
// CHECK: call x86_thiscallcc noundef ptr @"??0S@@QAE@XZ"
// CHECK: call i32 @atexit(ptr @"??__Fs@@YAXXZ")
// CHECK: ret void
// CHECK: define internal void @"??__Fs@@YAXXZ"()
// CHECK: call x86_thiscallcc void @"??1S@@QAE@XZ"
// CHECK: ret void
// These globals should have initializers comdat associative with the global.
// See @llvm.global_ctors above.
__declspec(selectany) S selectany1;
__declspec(selectany) S selectany2;
// CHECK: define linkonce_odr dso_local void @"??__Eselectany1@@YAXXZ"() {{.*}} comdat
// CHECK-NOT: @"??_Bselectany1
// CHECK: call x86_thiscallcc noundef ptr @"??0S@@QAE@XZ"
// CHECK: ret void
// CHECK: define linkonce_odr dso_local void @"??__Eselectany2@@YAXXZ"() {{.*}} comdat
// CHECK-NOT: @"??_Bselectany2
// CHECK: call x86_thiscallcc noundef ptr @"??0S@@QAE@XZ"
// CHECK: ret void
// The implicitly instantiated static data member should have initializer
// comdat associative with the global.
template <typename T> struct __declspec(dllexport) ExportedTemplate {
static S s;
};
template <typename T> S ExportedTemplate<T>::s;
void useExportedTemplate(ExportedTemplate<int> x) {
(void)x.s;
}
void StaticLocal() {
static S TheS;
}
// CHECK-LABEL: define dso_local void @"?StaticLocal@@YAXXZ"()
// CHECK: load i32, ptr @"?$S1@?1??StaticLocal@@YAXXZ@4IA"
// CHECK: store i32 {{.*}}, ptr @"?$S1@?1??StaticLocal@@YAXXZ@4IA"
// CHECK: ret
void MultipleStatics() {
static S S1;
static S S2;
static S S3;
static S S4;
static S S5;
static S S6;
static S S7;
static S S8;
static S S9;
static S S10;
static S S11;
static S S12;
static S S13;
static S S14;
static S S15;
static S S16;
static S S17;
static S S18;
static S S19;
static S S20;
static S S21;
static S S22;
static S S23;
static S S24;
static S S25;
static S S26;
static S S27;
static S S28;
static S S29;
static S S30;
static S S31;
static S S32;
static S S33;
static S S34;
static S S35;
}
// CHECK-LABEL: define dso_local void @"?MultipleStatics@@YAXXZ"()
// CHECK: load i32, ptr @"?$S1@?1??MultipleStatics@@YAXXZ@4IA"
// CHECK: and i32 {{.*}}, 1
// CHECK: and i32 {{.*}}, 2
// CHECK: and i32 {{.*}}, 4
// CHECK: and i32 {{.*}}, 8
// CHECK: and i32 {{.*}}, 16
// ...
// CHECK: and i32 {{.*}}, -2147483648
// CHECK: load i32, ptr @"?$S1@?1??MultipleStatics@@[email protected]"
// CHECK: and i32 {{.*}}, 1
// CHECK: and i32 {{.*}}, 2
// CHECK: and i32 {{.*}}, 4
// CHECK: ret
// Force WeakODRLinkage by using templates
class A {
public:
A() {}
~A() {}
int a;
};
template<typename T>
class B {
public:
static A foo;
};
template<typename T> A B<T>::foo;
inline S &UnreachableStatic() {
if (0) {
static S s; // bit 1
return s;
}
static S s; // bit 2
return s;
}
// CHECK-LABEL: define linkonce_odr dso_local noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"?UnreachableStatic@@YAAAUS@@XZ"() {{.*}} comdat
// CHECK: and i32 {{.*}}, 2
// CHECK: or i32 {{.*}}, 2
// CHECK: ret
inline S &getS() {
static S TheS;
return TheS;
}
// CHECK-LABEL: define linkonce_odr dso_local noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @"?getS@@YAAAUS@@XZ"() {{.*}} comdat
// CHECK: load i32, ptr @"??_B?1??getS@@YAAAUS@@XZ@51"
// CHECK: and i32 {{.*}}, 1
// CHECK: icmp eq i32 {{.*}}, 0
// CHECK: br i1
// init:
// CHECK: or i32 {{.*}}, 1
// CHECK: store i32 {{.*}}, ptr @"??_B?1??getS@@YAAAUS@@XZ@51"
// CHECK: call x86_thiscallcc noundef ptr @"??0S@@QAE@XZ"(ptr {{[^,]*}} @"?TheS@?1??getS@@YAAAUS@@XZ@4U2@A")
// CHECK: call i32 @atexit(ptr @"??__FTheS@?1??getS@@YAAAUS@@XZ@YAXXZ")
// CHECK: br label
// init.end:
// CHECK: ret ptr @"?TheS@?1??getS@@YAAAUS@@XZ@4U2@A"
inline int enum_in_function() {
// CHECK-LABEL: define linkonce_odr dso_local noundef i32 @"?enum_in_function@@YAHXZ"() {{.*}} comdat
static enum e { foo, bar, baz } x;
// CHECK: @"?x@?1??enum_in_function@@YAHXZ@4W4e@?1??1@YAHXZ@A"
static int y;
// CHECK: @"?y@?1??enum_in_function@@YAHXZ@4HA"
return x + y;
};
struct T {
enum e { foo, bar, baz };
int enum_in_struct() {
// CHECK-LABEL: define linkonce_odr dso_local x86_thiscallcc noundef i32 @"?enum_in_struct@T@@QAEHXZ"({{.*}}) {{.*}} comdat
static int x;
// CHECK: @"?x@?1??enum_in_struct@T@@QAEHXZ@4HA"
return x++;
}
};
inline int switch_test(int x) {
// CHECK-LABEL: define linkonce_odr dso_local noundef i32 @"?switch_test@@YAHH@Z"(i32 noundef %x) {{.*}} comdat
switch (x) {
static int a;
// CHECK: @"?a@?3??switch_test@@YAHH@Z@4HA"
case 0:
a++;
return 1;
case 1:
static int b;
// CHECK: @"?b@?3??switch_test@@YAHH@Z@4HA"
return b++;
case 2: {
static int c;
// CHECK: @"?c@?4??switch_test@@YAHH@Z@4HA"
return b + c++;
}
};
}
int f();
inline void switch_test2() {
// CHECK-LABEL: define linkonce_odr dso_local void @"?switch_test2@@YAXXZ"() {{.*}} comdat
// CHECK: @"?x@?2??switch_test2@@YAXXZ@4HA"
switch (1) default: static int x = f();
}
namespace DynamicDLLImportInitVSMangling {
// Failing to pop the ExprEvalContexts when instantiating a dllimport var with
// dynamic initializer would cause subsequent static local numberings to be
// incorrect.
struct NonPOD { NonPOD(); };
template <typename T> struct A { static NonPOD x; };
template <typename T> NonPOD A<T>::x;
template struct __declspec(dllimport) A<int>;
inline int switch_test3() {
// CHECK-LABEL: define linkonce_odr dso_local noundef i32 @"?switch_test3@DynamicDLLImportInitVSMangling@@YAHXZ"() {{.*}} comdat
static int local;
// CHECK: @"?local@?1??switch_test3@DynamicDLLImportInitVSMangling@@YAHXZ@4HA"
return local++;
}
}
void force_usage() {
UnreachableStatic();
getS();
(void)B<int>::foo; // (void) - force usage
enum_in_function();
(void)&T::enum_in_struct;
switch_test(1);
switch_test2();
DynamicDLLImportInitVSMangling::switch_test3();
}
// CHECK: define linkonce_odr dso_local void @"??__E?foo@?$B@H@@2VA@@A@@YAXXZ"() {{.*}} comdat
// CHECK-NOT: and
// CHECK-NOT: ?_Bfoo@
// CHECK: call x86_thiscallcc noundef ptr @"??0A@@QAE@XZ"
// CHECK: call i32 @atexit(ptr @"??__F?foo@?$B@H@@2VA@@A@@YAXXZ")
// CHECK: ret void
// CHECK: define linkonce_odr dso_local x86_thiscallcc noundef ptr @"??0A@@QAE@XZ"({{.*}}) {{.*}} comdat
// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}}) {{.*}} comdat
// CHECK: define internal void @"??__F?foo@?$B@H@@2VA@@A@@YAXXZ"
// CHECK: call x86_thiscallcc void @"??1A@@QAE@XZ"{{.*}}foo
// CHECK: ret void
// CHECK: define internal void @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp()
// CHECK: call void @"??__Es@@YAXXZ"()
// CHECK: ret void
Codebase Browser
llvm