df8dd61f23
Summary: This is needed to avoid conflicts in mangled names for codeview types in anonymous namespaces. In CodeView, types refer to each other typically through forward declarations, which contain mangled names. These names have to be unique, otherwise the debugger will look up the mangled name and find the wrong definition. Furthermore, ThinLTO will deduplicate the types, and debug info verification can fail when the types have the wrong sizes. This is PR38608. Fixes PR38609. Reviewers: majnemer, inglorion, hans Subscribers: mehdi_amini, aprantl, JDevlieghere, dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D50877 llvm-svn: 340079
141 lines
8.4 KiB
C++
141 lines
8.4 KiB
C++
// RUN: %clang_cc1 -emit-llvm -o - -triple=i386-pc-win32 -std=c++11 %s -fcxx-exceptions -fms-extensions | FileCheck %s
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// RUN: %clang_cc1 -emit-llvm -o - -triple=i386-pc-win32 -std=c++11 %s -fcxx-exceptions -fms-extensions -DSTD | FileCheck %s
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// CHECK-DAG: @"??_R0?AUY@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUY@@\00" }, comdat
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// CHECK-DAG: @"_CT??_R0?AUY@@@8??0Y@@QAE@ABU0@@Z8" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 4, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0?AUY@@@8" to i8*), i32 0, i32 -1, i32 0, i32 8, i8* bitcast (%struct.Y* (%struct.Y*, %struct.Y*, i32)* @"??0Y@@QAE@ABU0@@Z" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"??_R0?AUZ@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUZ@@\00" }, comdat
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// CHECK-DAG: @"_CT??_R0?AUZ@@@81" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0?AUZ@@@8" to i8*), i32 0, i32 -1, i32 0, i32 1, i8* null }, section ".xdata", comdat
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// CHECK-DAG: @"??_R0?AUW@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUW@@\00" }, comdat
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// CHECK-DAG: @"_CT??_R0?AUW@@@8??0W@@QAE@ABU0@@Z44" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 4, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0?AUW@@@8" to i8*), i32 4, i32 -1, i32 0, i32 4, i8* bitcast (%struct.W* (%struct.W*, %struct.W*, i32)* @"??0W@@QAE@ABU0@@Z" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"??_R0?AUM@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUM@@\00" }, comdat
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// CHECK-DAG: @"_CT??_R0?AUM@@@818" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0?AUM@@@8" to i8*), i32 8, i32 -1, i32 0, i32 1, i8* null }, section ".xdata", comdat
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// CHECK-DAG: @"??_R0?AUV@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUV@@\00" }, comdat
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// CHECK-DAG: @"_CT??_R0?AUV@@@81044" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0?AUV@@@8" to i8*), i32 0, i32 4, i32 4, i32 1, i8* null }, section ".xdata", comdat
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// CHECK-DAG: @"_CTA5?AUY@@" = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.5 { i32 5, [5 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0?AUY@@@8??0Y@@QAE@ABU0@@Z8", %eh.CatchableType* @"_CT??_R0?AUZ@@@81", %eh.CatchableType* @"_CT??_R0?AUW@@@8??0W@@QAE@ABU0@@Z44", %eh.CatchableType* @"_CT??_R0?AUM@@@818", %eh.CatchableType* @"_CT??_R0?AUV@@@81044"] }, section ".xdata", comdat
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// CHECK-DAG: @"_TI5?AUY@@" = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i8* bitcast (void (%struct.Y*)* @"??_DY@@QAEXXZ" to i8*), i8* null, i8* bitcast (%eh.CatchableTypeArray.5* @"_CTA5?AUY@@" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"_CT??_R0?AUDefault@@@8??_ODefault@@QAEXAAU0@@Z1" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor13* @"??_R0?AUDefault@@@8" to i8*), i32 0, i32 -1, i32 0, i32 1, i8* bitcast (void (%struct.Default*, %struct.Default*)* @"??_ODefault@@QAEXAAU0@@Z" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"_CT??_R0?AUVariadic@@@8??_OVariadic@@QAEXAAU0@@Z1" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor14* @"??_R0?AUVariadic@@@8" to i8*), i32 0, i32 -1, i32 0, i32 1, i8* bitcast (void (%struct.Variadic*, %struct.Variadic*)* @"??_OVariadic@@QAEXAAU0@@Z" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"_CT??_R0?AUTemplateWithDefault@@@8??$?_OH@TemplateWithDefault@@QAEXAAU0@@Z1" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor25* @"??_R0?AUTemplateWithDefault@@@8" to i8*), i32 0, i32 -1, i32 0, i32 1, i8* bitcast (void (%struct.TemplateWithDefault*, %struct.TemplateWithDefault*)* @"??$?_OH@TemplateWithDefault@@QAEXAAU0@@Z" to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @"_CTA2$$T" = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.2 { i32 2, [2 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0$$T@84", %eh.CatchableType* @"_CT??_R0PAX@84"] }, section ".xdata", comdat
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// CHECK-DAG: @"_CT??_R0P6AXXZ@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, i8* bitcast (%rtti.TypeDescriptor7* @"??_R0P6AXXZ@8" to i8*), i32 0, i32 -1, i32 0, i32 4, i8* null }, section ".xdata", comdat
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// CHECK-DAG: @_CTA1P6AXXZ = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0P6AXXZ@84"] }, section ".xdata", comdat
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// CHECK-DAG: @_TI1P6AXXZ = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @_CTA1P6AXXZ to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @_TIU2PAPFAH = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 4, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.2* @_CTA2PAPFAH to i8*) }, section ".xdata", comdat
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// CHECK-DAG: @_CTA2PAPFAH = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.2 { i32 2, [2 x %eh.CatchableType*] [%eh.CatchableType* @"_CT??_R0PAPFAH@84", %eh.CatchableType* @"_CT??_R0PAX@84"] }, section ".xdata", comdat
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// CHECK-DAG: @"_TI1?AUFoo@?A0x{{[^@]*}}@@" = internal unnamed_addr constant %eh.ThrowInfo { i32 0, i8* null, i8* null, i8* bitcast (%eh.CatchableTypeArray.1* @"_CTA1?AUFoo@?A0x{{[^@]*}}@@" to i8*) }, section ".xdata"
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struct N { ~N(); };
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struct M : private N {};
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struct X {};
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struct Z {};
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struct V : private X {};
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struct W : M, virtual V {};
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struct Y : Z, W, virtual V {};
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void f(const Y &y) {
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// CHECK-LABEL: @"?f@@YAXABUY@@@Z"
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// CHECK: call x86_thiscallcc %struct.Y* @"??0Y@@QAE@ABU0@@Z"(%struct.Y* %[[mem:.*]], %struct.Y*
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// CHECK: %[[cast:.*]] = bitcast %struct.Y* %[[mem]] to i8*
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// CHECK: call void @_CxxThrowException(i8* %[[cast]], %eh.ThrowInfo* @"_TI5?AUY@@")
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throw y;
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}
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void g(const int *const *y) {
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// CHECK-LABEL: @"?g@@YAXPBQBH@Z"
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// CHECK: call void @_CxxThrowException(i8* %{{.*}}, %eh.ThrowInfo* @_TIC2PAPBH)
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throw y;
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}
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void h(__unaligned int * __unaligned *y) {
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// CHECK-LABEL: @"?h@@YAXPFAPFAH@Z"
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// CHECK: call void @_CxxThrowException(i8* %{{.*}}, %eh.ThrowInfo* @_TIU2PAPFAH)
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throw y;
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}
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struct Default {
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Default(Default &, int = 42);
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};
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// CHECK-LABEL: @"??_ODefault@@QAEXAAU0@@Z"
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// CHECK: %[[src_addr:.*]] = alloca
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// CHECK: %[[this_addr:.*]] = alloca
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// CHECK: store {{.*}} %src, {{.*}} %[[src_addr]], align 4
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// CHECK: store {{.*}} %this, {{.*}} %[[this_addr]], align 4
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// CHECK: %[[this:.*]] = load {{.*}} %[[this_addr]]
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// CHECK: %[[src:.*]] = load {{.*}} %[[src_addr]]
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// CHECK: call x86_thiscallcc {{.*}} @"??0Default@@QAE@AAU0@H@Z"({{.*}} %[[this]], {{.*}} %[[src]], i32 42)
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// CHECK: ret void
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void h(Default &d) {
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throw d;
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}
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struct Variadic {
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Variadic(Variadic &, ...);
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};
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void i(Variadic &v) {
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throw v;
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}
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// CHECK-LABEL: @"??_OVariadic@@QAEXAAU0@@Z"
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// CHECK: %[[src_addr:.*]] = alloca
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// CHECK: %[[this_addr:.*]] = alloca
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// CHECK: store {{.*}} %src, {{.*}} %[[src_addr:.*]], align
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// CHECK: store {{.*}} %this, {{.*}} %[[this_addr:.*]], align
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// CHECK: %[[this:.*]] = load {{.*}} %[[this_addr]]
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// CHECK: %[[src:.*]] = load {{.*}} %[[src_addr]]
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// CHECK: call {{.*}} @"??0Variadic@@QAA@AAU0@ZZ"({{.*}} %[[this]], {{.*}} %[[src]])
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// CHECK: ret void
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struct TemplateWithDefault {
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template <typename T>
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static int f() {
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return 0;
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}
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template <typename T = int>
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TemplateWithDefault(TemplateWithDefault &, T = f<T>());
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};
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void j(TemplateWithDefault &twd) {
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throw twd;
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}
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void h() {
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throw nullptr;
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}
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#ifdef STD
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namespace std {
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template <typename T>
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void *__GetExceptionInfo(T);
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}
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#else
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template <typename T>
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void *__GetExceptionInfo(T);
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#endif
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using namespace std;
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void *GetExceptionInfo_test0() {
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// CHECK-LABEL: @"?GetExceptionInfo_test0@@YAPAXXZ"
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// CHECK: ret i8* bitcast (%eh.ThrowInfo* @_TI1H to i8*)
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return __GetExceptionInfo(0);
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}
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void *GetExceptionInfo_test1() {
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// CHECK-LABEL: @"?GetExceptionInfo_test1@@YAPAXXZ"
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// CHECK: ret i8* bitcast (%eh.ThrowInfo* @_TI1P6AXXZ to i8*)
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return __GetExceptionInfo<void (*)()>(&h);
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}
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// PR36327: Try an exception type with no linkage.
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namespace { struct Foo { } foo_exc; }
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void *GetExceptionInfo_test2() {
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// CHECK-LABEL: @"?GetExceptionInfo_test2@@YAPAXXZ"
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// CHECK: ret i8* bitcast (%eh.ThrowInfo* @"_TI1?AUFoo@?A0x{{[^@]*}}@@" to i8*)
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return __GetExceptionInfo(foo_exc);
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}
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