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llvm-project/clang/test/CodeGenCXX/microsoft-abi-static-initia...

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// RUN: %clang_cc1 -fms-extensions -emit-llvm %s -o - -mconstructor-aliases -triple=i386-pc-win32 | FileCheck %s
// CHECK: @llvm.global_ctors = appending global [2 x { i32, void ()*, i8* }]
// CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @"\01??__Efoo@?$B@H@@2VA@@A@YAXXZ",
// CHECK: i8* bitcast (%class.A* @"\01?foo@?$B@H@@2VA@@A" to i8*) },
// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp, i8* null }]
struct S {
S();
~S();
};
S s;
// CHECK: define internal void @"\01??__Es@@YAXXZ"()
// CHECK: call x86_thiscallcc %struct.S* @"\01??0S@@QAE@XZ"
// CHECK: call i32 @atexit(void ()* @"\01??__Fs@@YAXXZ")
// CHECK: ret void
// CHECK: define internal void @"\01??__Fs@@YAXXZ"()
// CHECK: call x86_thiscallcc void @"\01??1S@@QAE@XZ"
// CHECK: ret void
// These globals should use distinct guard variables, and not different bits of
// the same global.
__declspec(selectany) S selectany1;
__declspec(selectany) S selectany2;
// CHECK: define linkonce_odr void @"\01??__Eselectany1@@YAXXZ"()
// CHECK-NOT: @"\01??_Bselectany1
// CHECK: call x86_thiscallcc %struct.S* @"\01??0S@@QAE@XZ"
// CHECK: ret void
// CHECK: define linkonce_odr void @"\01??__Eselectany2@@YAXXZ"()
// CHECK-NOT: @"\01??_Bselectany2
// CHECK: call x86_thiscallcc %struct.S* @"\01??0S@@QAE@XZ"
// CHECK: ret void
void StaticLocal() {
static S TheS;
}
// CHECK-LABEL: define void @"\01?StaticLocal@@YAXXZ"()
// CHECK: load i32* @"\01?$S1@?0??StaticLocal@@YAXXZ@4IA"
// CHECK: store i32 {{.*}}, i32* @"\01?$S1@?0??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 void @"\01?MultipleStatics@@YAXXZ"()
// CHECK: load i32* @"\01?$S1@?0??MultipleStatics@@YAXXZ@4IA"
// CHECK: and i32 {{.*}}, 1
// CHECK: and i32 {{.*}}, 2
// CHECK: and i32 {{.*}}, 4
// CHECK: and i32 {{.*}}, 8
// CHECK: and i32 {{.*}}, 16
// ...
// CHECK: and i32 {{.*}}, -2147483648
// CHECK: load i32* @"\01?$S1@?0??MultipleStatics@@YAXXZ@4IA1"
// 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 dereferenceable({{[0-9]+}}) %struct.S* @"\01?UnreachableStatic@@YAAAUS@@XZ"()
// CHECK: and i32 {{.*}}, 2
// CHECK: or i32 {{.*}}, 2
// CHECK: ret
inline S &getS() {
static S TheS;
return TheS;
}
// CHECK-LABEL: define linkonce_odr dereferenceable({{[0-9]+}}) %struct.S* @"\01?getS@@YAAAUS@@XZ"
// CHECK: load i32* @"\01??_B?1??getS@@YAAAUS@@XZ@51"
// CHECK: and i32 {{.*}}, 1
// CHECK: icmp ne i32 {{.*}}, 0
// CHECK: br i1
// init:
// CHECK: or i32 {{.*}}, 1
// CHECK: store i32 {{.*}}, i32* @"\01??_B?1??getS@@YAAAUS@@XZ@51"
// CHECK: call x86_thiscallcc %struct.S* @"\01??0S@@QAE@XZ"(%struct.S* @"\01?TheS@?1??getS@@YAAAUS@@XZ@4U2@A")
// CHECK: call i32 @atexit(void ()* @"\01??__FTheS@?1??getS@@YAAAUS@@XZ@YAXXZ")
// CHECK: br label
// init.end:
// CHECK: ret %struct.S* @"\01?TheS@?1??getS@@YAAAUS@@XZ@4U2@A"
inline int enum_in_function() {
// CHECK-LABEL: define linkonce_odr i32 @"\01?enum_in_function@@YAHXZ"()
static enum e { foo, bar, baz } x;
// CHECK: @"\01?x@?1??enum_in_function@@YAHXZ@4W4e@?1??1@YAHXZ@A"
static int y;
// CHECK: @"\01?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 x86_thiscallcc i32 @"\01?enum_in_struct@T@@QAEHXZ"
static int x;
// CHECK: @"\01?x@?1??enum_in_struct@T@@QAEHXZ@4HA"
return x++;
}
};
inline int switch_test(int x) {
// CHECK-LABEL: define linkonce_odr i32 @"\01?switch_test@@YAHH@Z"(i32 %x)
switch (x) {
static int a;
// CHECK: @"\01?a@?3??switch_test@@YAHH@Z@4HA"
case 0:
a++;
return 1;
case 1:
static int b;
// CHECK: @"\01?b@?3??switch_test@@YAHH@Z@4HA"
return b++;
case 2: {
static int c;
// CHECK: @"\01?c@?4??switch_test@@YAHH@Z@4HA"
return b + c++;
}
};
}
int f();
inline void switch_test2() {
// CHECK-LABEL: define linkonce_odr void @"\01?switch_test2@@YAXXZ"()
// CHECK: @"\01?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 i32 @"\01?switch_test3@DynamicDLLImportInitVSMangling@@YAHXZ"
static int local;
// CHECK: @"\01?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 void @"\01??__Efoo@?$B@H@@2VA@@A@YAXXZ"()
// CHECK-NOT: and
// CHECK-NOT: ?_Bfoo@
// CHECK: call x86_thiscallcc %class.A* @"\01??0A@@QAE@XZ"
// CHECK: call i32 @atexit(void ()* @"\01??__Ffoo@?$B@H@@2VA@@A@YAXXZ")
// CHECK: ret void
// CHECK: define linkonce_odr x86_thiscallcc %class.A* @"\01??0A@@QAE@XZ"
// CHECK: define linkonce_odr x86_thiscallcc void @"\01??1A@@QAE@XZ"
// CHECK: define internal void @"\01??__Ffoo@?$B@H@@2VA@@A@YAXXZ"
// CHECK: call x86_thiscallcc void @"\01??1A@@QAE@XZ"{{.*}}foo
// CHECK: ret void
// CHECK: define internal void @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp()
// CHECK: call void @"\01??__Es@@YAXXZ"()
// CHECK: ret void
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