forked from OSchip/llvm-project
252 lines
7.6 KiB
C++
252 lines
7.6 KiB
C++
// RUN: %clang_cc1 -fms-extensions -fno-threadsafe-statics -emit-llvm %s -o - -mconstructor-aliases -triple=i386-pc-win32 | FileCheck %s
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// CHECK: @llvm.global_ctors = appending global [5 x { i32, void ()*, i8* }] [
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// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @"??__Eselectany1@@YAXXZ", i8* getelementptr inbounds (%struct.S, %struct.S* @"?selectany1@@3US@@A", i32 0, i32 0) },
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// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @"??__Eselectany2@@YAXXZ", i8* getelementptr inbounds (%struct.S, %struct.S* @"?selectany2@@3US@@A", i32 0, i32 0) },
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// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?s@?$ExportedTemplate@H@@2US@@A@@YAXXZ", i8* getelementptr inbounds (%struct.S, %struct.S* @"?s@?$ExportedTemplate@H@@2US@@A", i32 0, i32 0) },
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// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @"??__E?foo@?$B@H@@2VA@@A@@YAXXZ", i8* bitcast (%class.A* @"?foo@?$B@H@@2VA@@A" to i8*) },
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// CHECK: { i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp, i8* null }
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// CHECK: ]
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struct S {
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S();
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~S();
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};
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S s;
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// CHECK: define internal void @"??__Es@@YAXXZ"()
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// CHECK: call x86_thiscallcc %struct.S* @"??0S@@QAE@XZ"
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// CHECK: call i32 @atexit(void ()* @"??__Fs@@YAXXZ")
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// CHECK: ret void
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// CHECK: define internal void @"??__Fs@@YAXXZ"()
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// CHECK: call x86_thiscallcc void @"??1S@@QAE@XZ"
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// CHECK: ret void
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// These globals should have initializers comdat associative with the global.
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// See @llvm.global_ctors above.
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__declspec(selectany) S selectany1;
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__declspec(selectany) S selectany2;
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// CHECK: define linkonce_odr dso_local void @"??__Eselectany1@@YAXXZ"() {{.*}} comdat
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// CHECK-NOT: @"??_Bselectany1
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// CHECK: call x86_thiscallcc %struct.S* @"??0S@@QAE@XZ"
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// CHECK: ret void
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// CHECK: define linkonce_odr dso_local void @"??__Eselectany2@@YAXXZ"() {{.*}} comdat
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// CHECK-NOT: @"??_Bselectany2
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// CHECK: call x86_thiscallcc %struct.S* @"??0S@@QAE@XZ"
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// CHECK: ret void
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// The implicitly instantiated static data member should have initializer
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// comdat associative with the global.
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template <typename T> struct __declspec(dllexport) ExportedTemplate {
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static S s;
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};
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template <typename T> S ExportedTemplate<T>::s;
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void useExportedTemplate(ExportedTemplate<int> x) {
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(void)x.s;
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}
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void StaticLocal() {
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static S TheS;
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}
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// CHECK-LABEL: define dso_local void @"?StaticLocal@@YAXXZ"()
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// CHECK: load i32, i32* @"?$S1@?1??StaticLocal@@YAXXZ@4IA"
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// CHECK: store i32 {{.*}}, i32* @"?$S1@?1??StaticLocal@@YAXXZ@4IA"
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// CHECK: ret
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void MultipleStatics() {
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static S S1;
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static S S2;
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static S S3;
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static S S4;
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static S S5;
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static S S6;
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static S S7;
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static S S8;
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static S S9;
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static S S10;
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static S S11;
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static S S12;
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static S S13;
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static S S14;
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static S S15;
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static S S16;
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static S S17;
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static S S18;
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static S S19;
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static S S20;
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static S S21;
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static S S22;
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static S S23;
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static S S24;
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static S S25;
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static S S26;
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static S S27;
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static S S28;
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static S S29;
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static S S30;
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static S S31;
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static S S32;
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static S S33;
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static S S34;
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static S S35;
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}
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// CHECK-LABEL: define dso_local void @"?MultipleStatics@@YAXXZ"()
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// CHECK: load i32, i32* @"?$S1@?1??MultipleStatics@@YAXXZ@4IA"
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// CHECK: and i32 {{.*}}, 1
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// CHECK: and i32 {{.*}}, 2
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// CHECK: and i32 {{.*}}, 4
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// CHECK: and i32 {{.*}}, 8
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// CHECK: and i32 {{.*}}, 16
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// ...
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// CHECK: and i32 {{.*}}, -2147483648
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// CHECK: load i32, i32* @"?$S1@?1??MultipleStatics@@YAXXZ@4IA.1"
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// CHECK: and i32 {{.*}}, 1
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// CHECK: and i32 {{.*}}, 2
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// CHECK: and i32 {{.*}}, 4
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// CHECK: ret
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// Force WeakODRLinkage by using templates
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class A {
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public:
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A() {}
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~A() {}
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int a;
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};
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template<typename T>
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class B {
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public:
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static A foo;
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};
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template<typename T> A B<T>::foo;
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inline S &UnreachableStatic() {
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if (0) {
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static S s; // bit 1
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return s;
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}
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static S s; // bit 2
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return s;
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}
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// CHECK-LABEL: define linkonce_odr dso_local nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %struct.S* @"?UnreachableStatic@@YAAAUS@@XZ"() {{.*}} comdat
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// CHECK: and i32 {{.*}}, 2
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// CHECK: or i32 {{.*}}, 2
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// CHECK: ret
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inline S &getS() {
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static S TheS;
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return TheS;
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}
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// CHECK-LABEL: define linkonce_odr dso_local nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) %struct.S* @"?getS@@YAAAUS@@XZ"() {{.*}} comdat
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// CHECK: load i32, i32* @"??_B?1??getS@@YAAAUS@@XZ@51"
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// CHECK: and i32 {{.*}}, 1
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// CHECK: icmp eq i32 {{.*}}, 0
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// CHECK: br i1
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// init:
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// CHECK: or i32 {{.*}}, 1
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// CHECK: store i32 {{.*}}, i32* @"??_B?1??getS@@YAAAUS@@XZ@51"
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// CHECK: call x86_thiscallcc %struct.S* @"??0S@@QAE@XZ"(%struct.S* {{[^,]*}} @"?TheS@?1??getS@@YAAAUS@@XZ@4U2@A")
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// CHECK: call i32 @atexit(void ()* @"??__FTheS@?1??getS@@YAAAUS@@XZ@YAXXZ")
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// CHECK: br label
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// init.end:
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// CHECK: ret %struct.S* @"?TheS@?1??getS@@YAAAUS@@XZ@4U2@A"
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inline int enum_in_function() {
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// CHECK-LABEL: define linkonce_odr dso_local i32 @"?enum_in_function@@YAHXZ"() {{.*}} comdat
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static enum e { foo, bar, baz } x;
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// CHECK: @"?x@?1??enum_in_function@@YAHXZ@4W4e@?1??1@YAHXZ@A"
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static int y;
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// CHECK: @"?y@?1??enum_in_function@@YAHXZ@4HA"
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return x + y;
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};
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struct T {
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enum e { foo, bar, baz };
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int enum_in_struct() {
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// CHECK-LABEL: define linkonce_odr dso_local x86_thiscallcc i32 @"?enum_in_struct@T@@QAEHXZ"({{.*}}) {{.*}} comdat
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static int x;
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// CHECK: @"?x@?1??enum_in_struct@T@@QAEHXZ@4HA"
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return x++;
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}
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};
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inline int switch_test(int x) {
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// CHECK-LABEL: define linkonce_odr dso_local i32 @"?switch_test@@YAHH@Z"(i32 %x) {{.*}} comdat
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switch (x) {
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static int a;
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// CHECK: @"?a@?3??switch_test@@YAHH@Z@4HA"
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case 0:
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a++;
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return 1;
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case 1:
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static int b;
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// CHECK: @"?b@?3??switch_test@@YAHH@Z@4HA"
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return b++;
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case 2: {
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static int c;
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// CHECK: @"?c@?4??switch_test@@YAHH@Z@4HA"
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return b + c++;
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}
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};
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}
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int f();
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inline void switch_test2() {
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// CHECK-LABEL: define linkonce_odr dso_local void @"?switch_test2@@YAXXZ"() {{.*}} comdat
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// CHECK: @"?x@?2??switch_test2@@YAXXZ@4HA"
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switch (1) default: static int x = f();
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}
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namespace DynamicDLLImportInitVSMangling {
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// Failing to pop the ExprEvalContexts when instantiating a dllimport var with
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// dynamic initializer would cause subsequent static local numberings to be
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// incorrect.
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struct NonPOD { NonPOD(); };
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template <typename T> struct A { static NonPOD x; };
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template <typename T> NonPOD A<T>::x;
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template struct __declspec(dllimport) A<int>;
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inline int switch_test3() {
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// CHECK-LABEL: define linkonce_odr dso_local i32 @"?switch_test3@DynamicDLLImportInitVSMangling@@YAHXZ"() {{.*}} comdat
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static int local;
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// CHECK: @"?local@?1??switch_test3@DynamicDLLImportInitVSMangling@@YAHXZ@4HA"
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return local++;
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}
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}
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void force_usage() {
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UnreachableStatic();
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getS();
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(void)B<int>::foo; // (void) - force usage
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enum_in_function();
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(void)&T::enum_in_struct;
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switch_test(1);
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switch_test2();
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DynamicDLLImportInitVSMangling::switch_test3();
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}
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// CHECK: define linkonce_odr dso_local void @"??__E?foo@?$B@H@@2VA@@A@@YAXXZ"() {{.*}} comdat
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// CHECK-NOT: and
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// CHECK-NOT: ?_Bfoo@
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// CHECK: call x86_thiscallcc %class.A* @"??0A@@QAE@XZ"
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// CHECK: call i32 @atexit(void ()* @"??__F?foo@?$B@H@@2VA@@A@@YAXXZ")
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// CHECK: ret void
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// CHECK: define linkonce_odr dso_local x86_thiscallcc %class.A* @"??0A@@QAE@XZ"({{.*}}) {{.*}} comdat
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// CHECK: define linkonce_odr dso_local x86_thiscallcc void @"??1A@@QAE@XZ"({{.*}}) {{.*}} comdat
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// CHECK: define internal void @"??__F?foo@?$B@H@@2VA@@A@@YAXXZ"
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// CHECK: call x86_thiscallcc void @"??1A@@QAE@XZ"{{.*}}foo
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// CHECK: ret void
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// CHECK: define internal void @_GLOBAL__sub_I_microsoft_abi_static_initializers.cpp()
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// CHECK: call void @"??__Es@@YAXXZ"()
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// CHECK: ret void
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