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llvm-project/clang/test/CodeGenCXX/microsoft-abi-throw.cpp

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MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
// RUN: %clang_cc1 -emit-llvm -o - -triple=i386-pc-win32 -std=c++11 %s -fcxx-exceptions -fms-extensions | FileCheck %s
[MS Compat] Don't crash if __GetExceptionInfo is in global scope __GetExceptionInfo triggered Sema::LazilyCreateBuiltin which tries to create a non-templated function decl. This is unnecessary and ill-advised, there is no need for us to create a declaration for such a builtin. This fixes PR26298. llvm-svn: 258762
2016-01-26 09:12:17 +08:00
// RUN: %clang_cc1 -emit-llvm -o - -triple=i386-pc-win32 -std=c++11 %s -fcxx-exceptions -fms-extensions -DSTD | FileCheck %s
MS ABI: Implement support for throwing a C++ exception Throwing a C++ exception, under the MS ABI, is implemented using three components: - ThrowInfo structure which contains information like CV qualifiers, what destructor to call and a pointer to the CatchableTypeArray. - In a significant departure from the Itanium ABI, copying by-value occurs in the runtime and not at the catch site. This means we need to enumerate all possible types that this exception could be caught as and encode the necessary information to convert from the exception object's type to the catch handler's type. This includes complicated derived to base conversions and the execution of copy-constructors. N.B. This implementation doesn't support the execution of a copy-constructor from within the runtime for now. Adding support for that functionality is quite difficult due to things like default argument expressions which may evaluate arbitrary code hiding in the copy-constructor's parameters. Differential Revision: http://reviews.llvm.org/D8066 llvm-svn: 231328
2015-03-05 08:46:22 +08:00
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-DAG: @"??_R0?AUY@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUY@@\00" }, comdat
// 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
// CHECK-DAG: @"??_R0?AUZ@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUZ@@\00" }, comdat
// 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
// CHECK-DAG: @"??_R0?AUW@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUW@@\00" }, comdat
// 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
// CHECK-DAG: @"??_R0?AUM@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUM@@\00" }, comdat
// 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
// CHECK-DAG: @"??_R0?AUV@@@8" = linkonce_odr global %rtti.TypeDescriptor7 { i8** @"??_7type_info@@6B@", i8* null, [8 x i8] c".?AUV@@\00" }, comdat
// 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
MS ABI: Mangle the location of the catchable type into it's name Because the catchable type has a reference to its name, mangle the location to ensure that two catchable types with different locations are distinct. llvm-svn: 231819
2015-03-11 03:01:51 +08:00
// 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
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// 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
// 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
[MS] Don't reference deleted copy ctors from catchable types When throwing objects with deleted copy constructors, the copy ctor field of the catchable type should remain null and the mangle name changes. This already worked in simple cases, but in cases involving non-trivial subobjects, sometimes LookupCopyingConstructor could return a non-null but deleted constructor decl. Skip those and don't reference them. Fixes PR43680
2019-10-31 05:38:11 +08:00
// CHECK-DAG: @"_CT??_R0?AUDeletedCopy@@@81" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor17* @"??_R0?AUDeletedCopy@@@8" to i8*), i32 0, i32 -1, i32 0, i32 1, i8* null }, section ".xdata", comdat
// CHECk-DAG: @"_CT??_R0?AUMoveOnly@@@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 0, i8* bitcast (%rtti.TypeDescriptor14* @"??_R0?AUMoveOnly@@@8" to i8*), i32 0, i321-1, i32 0, i32 4, i8* null }, section ".xdata", comda
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// 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
// 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
MS ABI: Allow a nullptr_t exception to be caught by void * catch handler A nullptr exception object can be caught by any pointer type catch handler. However, it is not possible to express this in the exception info for the MS ABI. As a middle ground, allow such exception objects to be caught with pointer-to-void catch handlers. llvm-svn: 232069
2015-03-13 01:44:49 +08:00
// 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
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// 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
[MS ABI] A pointer-to-function cannot be caught as a pointer-to-void Don't assume that all pointers are convertible to void pointer. Instead correctly respect [conv.ptr]p2; only allow pointer types with an object pointee type to be caught as pointer-to-void. llvm-svn: 234090
2015-04-04 13:37:48 +08:00
// 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
// 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
[MS ABI] Support throwing/catching __unaligned types We need to mark the appropriate bits in ThrowInfo and HandlerType so that the personality routine can correctly handle qualification conversions. llvm-svn: 275154
2016-07-12 12:42:50 +08:00
// 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
// 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
[MS] Mangle a hash of the main file path into anonymous namespaces 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
2018-08-18 04:59:27 +08:00
// 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"
MS ABI: Implement support for throwing a C++ exception Throwing a C++ exception, under the MS ABI, is implemented using three components: - ThrowInfo structure which contains information like CV qualifiers, what destructor to call and a pointer to the CatchableTypeArray. - In a significant departure from the Itanium ABI, copying by-value occurs in the runtime and not at the catch site. This means we need to enumerate all possible types that this exception could be caught as and encode the necessary information to convert from the exception object's type to the catch handler's type. This includes complicated derived to base conversions and the execution of copy-constructors. N.B. This implementation doesn't support the execution of a copy-constructor from within the runtime for now. Adding support for that functionality is quite difficult due to things like default argument expressions which may evaluate arbitrary code hiding in the copy-constructor's parameters. Differential Revision: http://reviews.llvm.org/D8066 llvm-svn: 231328
2015-03-05 08:46:22 +08:00
struct N { ~N(); };
struct M : private N {};
struct X {};
struct Z {};
struct V : private X {};
struct W : M, virtual V {};
struct Y : Z, W, virtual V {};
void f(const Y &y) {
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"?f@@YAXABUY@@@Z"
Revert D105169 due to the two-stage failure in ASAN This reverts the following commits: 37ca7a795b277c20c02a218bf44052278c03344b 9aa6c72b92b6c89cc6d23b693257df9af7de2d15 705387c5074bcca36d626882462ebbc2bcc3bed4 8ca4b3ef19fe82d7ad6a6e1515317dcc01b41515 80dba72a669b5416e97a42fd2c2a7bc5a6d3f44a
2021-10-18 22:03:47 +08:00
// CHECK: call x86_thiscallcc %struct.Y* @"??0Y@@QAE@ABU0@@Z"(%struct.Y* {{[^,]*}} %[[mem:.*]], %struct.Y*
MS ABI: Implement support for throwing a C++ exception Throwing a C++ exception, under the MS ABI, is implemented using three components: - ThrowInfo structure which contains information like CV qualifiers, what destructor to call and a pointer to the CatchableTypeArray. - In a significant departure from the Itanium ABI, copying by-value occurs in the runtime and not at the catch site. This means we need to enumerate all possible types that this exception could be caught as and encode the necessary information to convert from the exception object's type to the catch handler's type. This includes complicated derived to base conversions and the execution of copy-constructors. N.B. This implementation doesn't support the execution of a copy-constructor from within the runtime for now. Adding support for that functionality is quite difficult due to things like default argument expressions which may evaluate arbitrary code hiding in the copy-constructor's parameters. Differential Revision: http://reviews.llvm.org/D8066 llvm-svn: 231328
2015-03-05 08:46:22 +08:00
// CHECK: %[[cast:.*]] = bitcast %struct.Y* %[[mem]] to i8*
MS ABI: Correctly generate throw-info for pointer to const qual types We didn't create type info based on the unqualified pointee type, causing RTTI mismatches. llvm-svn: 231533
2015-03-07 07:45:20 +08:00
// CHECK: call void @_CxxThrowException(i8* %[[cast]], %eh.ThrowInfo* @"_TI5?AUY@@")
throw y;
}
void g(const int *const *y) {
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"?g@@YAXPBQBH@Z"
MS ABI: Correctly generate throw-info for pointer to const qual types We didn't create type info based on the unqualified pointee type, causing RTTI mismatches. llvm-svn: 231533
2015-03-07 07:45:20 +08:00
// CHECK: call void @_CxxThrowException(i8* %{{.*}}, %eh.ThrowInfo* @_TIC2PAPBH)
MS ABI: Implement support for throwing a C++ exception Throwing a C++ exception, under the MS ABI, is implemented using three components: - ThrowInfo structure which contains information like CV qualifiers, what destructor to call and a pointer to the CatchableTypeArray. - In a significant departure from the Itanium ABI, copying by-value occurs in the runtime and not at the catch site. This means we need to enumerate all possible types that this exception could be caught as and encode the necessary information to convert from the exception object's type to the catch handler's type. This includes complicated derived to base conversions and the execution of copy-constructors. N.B. This implementation doesn't support the execution of a copy-constructor from within the runtime for now. Adding support for that functionality is quite difficult due to things like default argument expressions which may evaluate arbitrary code hiding in the copy-constructor's parameters. Differential Revision: http://reviews.llvm.org/D8066 llvm-svn: 231328
2015-03-05 08:46:22 +08:00
throw y;
}
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
[MS ABI] Support throwing/catching __unaligned types We need to mark the appropriate bits in ThrowInfo and HandlerType so that the personality routine can correctly handle qualification conversions. llvm-svn: 275154
2016-07-12 12:42:50 +08:00
void h(__unaligned int * __unaligned *y) {
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"?h@@YAXPFAPFAH@Z"
[MS ABI] Support throwing/catching __unaligned types We need to mark the appropriate bits in ThrowInfo and HandlerType so that the personality routine can correctly handle qualification conversions. llvm-svn: 275154
2016-07-12 12:42:50 +08:00
// CHECK: call void @_CxxThrowException(i8* %{{.*}}, %eh.ThrowInfo* @_TIU2PAPFAH)
throw y;
}
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
struct Default {
Default(Default &, int = 42);
};
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"??_ODefault@@QAEXAAU0@@Z"
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
// CHECK: %[[src_addr:.*]] = alloca
// CHECK: %[[this_addr:.*]] = alloca
// CHECK: store {{.*}} %src, {{.*}} %[[src_addr]], align 4
// CHECK: store {{.*}} %this, {{.*}} %[[this_addr]], align 4
// CHECK: %[[this:.*]] = load {{.*}} %[[this_addr]]
// CHECK: %[[src:.*]] = load {{.*}} %[[src_addr]]
Revert D105169 due to the two-stage failure in ASAN This reverts the following commits: 37ca7a795b277c20c02a218bf44052278c03344b 9aa6c72b92b6c89cc6d23b693257df9af7de2d15 705387c5074bcca36d626882462ebbc2bcc3bed4 8ca4b3ef19fe82d7ad6a6e1515317dcc01b41515 80dba72a669b5416e97a42fd2c2a7bc5a6d3f44a
2021-10-18 22:03:47 +08:00
// CHECK: call x86_thiscallcc {{.*}} @"??0Default@@QAE@AAU0@H@Z"({{.*}} %[[this]], {{.*}} %[[src]], i32 42)
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
// CHECK: ret void
void h(Default &d) {
throw d;
}
[MS] Don't reference deleted copy ctors from catchable types When throwing objects with deleted copy constructors, the copy ctor field of the catchable type should remain null and the mangle name changes. This already worked in simple cases, but in cases involving non-trivial subobjects, sometimes LookupCopyingConstructor could return a non-null but deleted constructor decl. Skip those and don't reference them. Fixes PR43680
2019-10-31 05:38:11 +08:00
struct DeletedCopy {
DeletedCopy();
DeletedCopy(DeletedCopy &&);
DeletedCopy(const DeletedCopy &) = delete;
};
void throwDeletedCopy() { throw DeletedCopy(); }
struct MoveOnly {
MoveOnly();
MoveOnly(MoveOnly &&);
~MoveOnly();
MoveOnly(const MoveOnly &) = delete;
// For some reason this subobject was important for reproducing PR43680
struct HasCopy {
HasCopy();
HasCopy(const HasCopy &o);
~HasCopy();
int x;
} sub;
};
void throwMoveOnly() { throw MoveOnly(); }
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
struct Variadic {
Variadic(Variadic &, ...);
};
void i(Variadic &v) {
throw v;
}
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"??_OVariadic@@QAEXAAU0@@Z"
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
// CHECK: %[[src_addr:.*]] = alloca
// CHECK: %[[this_addr:.*]] = alloca
// CHECK: store {{.*}} %src, {{.*}} %[[src_addr:.*]], align
// CHECK: store {{.*}} %this, {{.*}} %[[this_addr:.*]], align
// CHECK: %[[this:.*]] = load {{.*}} %[[this_addr]]
// CHECK: %[[src:.*]] = load {{.*}} %[[src_addr]]
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK: call {{.*}} @"??0Variadic@@QAA@AAU0@ZZ"({{.*}} %[[this]], {{.*}} %[[src]])
MS ABI: Implement copy-ctor closures, finish implementing throw This adds support for copy-constructor closures. These are generated when the C++ runtime has to call a copy-constructor with a particular calling convention or with default arguments substituted in to the call. Because the runtime has no mechanism to call the function with a different calling convention or know-how to evaluate the default arguments at run-time, we create a thunk which will do all the appropriate work and package it in a way the runtime can use. Differential Revision: http://reviews.llvm.org/D8225 llvm-svn: 231952
2015-03-12 02:36:39 +08:00
// CHECK: ret void
struct TemplateWithDefault {
template <typename T>
static int f() {
return 0;
}
template <typename T = int>
TemplateWithDefault(TemplateWithDefault &, T = f<T>());
};
void j(TemplateWithDefault &twd) {
throw twd;
}
MS ABI: Allow a nullptr_t exception to be caught by void * catch handler A nullptr exception object can be caught by any pointer type catch handler. However, it is not possible to express this in the exception info for the MS ABI. As a middle ground, allow such exception objects to be caught with pointer-to-void catch handlers. llvm-svn: 232069
2015-03-13 01:44:49 +08:00
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
MS ABI: Allow a nullptr_t exception to be caught by void * catch handler A nullptr exception object can be caught by any pointer type catch handler. However, it is not possible to express this in the exception info for the MS ABI. As a middle ground, allow such exception objects to be caught with pointer-to-void catch handlers. llvm-svn: 232069
2015-03-13 01:44:49 +08:00
void h() {
throw nullptr;
}
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
[MS Compat] Don't crash if __GetExceptionInfo is in global scope __GetExceptionInfo triggered Sema::LazilyCreateBuiltin which tries to create a non-templated function decl. This is unnecessary and ill-advised, there is no need for us to create a declaration for such a builtin. This fixes PR26298. llvm-svn: 258762
2016-01-26 09:12:17 +08:00
#ifdef STD
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
namespace std {
template <typename T>
void *__GetExceptionInfo(T);
}
[MS Compat] Don't crash if __GetExceptionInfo is in global scope __GetExceptionInfo triggered Sema::LazilyCreateBuiltin which tries to create a non-templated function decl. This is unnecessary and ill-advised, there is no need for us to create a declaration for such a builtin. This fixes PR26298. llvm-svn: 258762
2016-01-26 09:12:17 +08:00
#else
template <typename T>
void *__GetExceptionInfo(T);
#endif
using namespace std;
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
void *GetExceptionInfo_test0() {
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"?GetExceptionInfo_test0@@YAPAXXZ"
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
// CHECK: ret i8* bitcast (%eh.ThrowInfo* @_TI1H to i8*)
[MS Compat] Don't crash if __GetExceptionInfo is in global scope __GetExceptionInfo triggered Sema::LazilyCreateBuiltin which tries to create a non-templated function decl. This is unnecessary and ill-advised, there is no need for us to create a declaration for such a builtin. This fixes PR26298. llvm-svn: 258762
2016-01-26 09:12:17 +08:00
return __GetExceptionInfo(0);
MS ABI: Implement __GetExceptionInfo for std::make_exception_ptr std::make_exception_ptr calls std::__GetExceptionInfo in order to figure out how to properly copy the exception object. Differential Revision: http://reviews.llvm.org/D8280 llvm-svn: 232188
2015-03-14 02:26:17 +08:00
}
[MS ABI] A pointer-to-function cannot be caught as a pointer-to-void Don't assume that all pointers are convertible to void pointer. Instead correctly respect [conv.ptr]p2; only allow pointer types with an object pointee type to be caught as pointer-to-void. llvm-svn: 234090
2015-04-04 13:37:48 +08:00
void *GetExceptionInfo_test1() {
[MS] Don't escape MS C++ names with \01 It is not needed after LLVM r327734. Now it will be easier to copy-paste IR symbol names from Clang. llvm-svn: 327738
2018-03-17 04:36:49 +08:00
// CHECK-LABEL: @"?GetExceptionInfo_test1@@YAPAXXZ"
[MS ABI] A pointer-to-function cannot be caught as a pointer-to-void Don't assume that all pointers are convertible to void pointer. Instead correctly respect [conv.ptr]p2; only allow pointer types with an object pointee type to be caught as pointer-to-void. llvm-svn: 234090
2015-04-04 13:37:48 +08:00
// CHECK: ret i8* bitcast (%eh.ThrowInfo* @_TI1P6AXXZ to i8*)
[MS Compat] Don't crash if __GetExceptionInfo is in global scope __GetExceptionInfo triggered Sema::LazilyCreateBuiltin which tries to create a non-templated function decl. This is unnecessary and ill-advised, there is no need for us to create a declaration for such a builtin. This fixes PR26298. llvm-svn: 258762
2016-01-26 09:12:17 +08:00
return __GetExceptionInfo<void (*)()>(&h);
[MS ABI] A pointer-to-function cannot be caught as a pointer-to-void Don't assume that all pointers are convertible to void pointer. Instead correctly respect [conv.ptr]p2; only allow pointer types with an object pointee type to be caught as pointer-to-void. llvm-svn: 234090
2015-04-04 13:37:48 +08:00
}
[MS] Make sure __GetExceptionInfo works on types with no linkage Fixes PR36327 llvm-svn: 335175
2018-06-21 05:12:20 +08:00
// PR36327: Try an exception type with no linkage.
namespace { struct Foo { } foo_exc; }
void *GetExceptionInfo_test2() {
// CHECK-LABEL: @"?GetExceptionInfo_test2@@YAPAXXZ"
[MS] Mangle a hash of the main file path into anonymous namespaces 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
2018-08-18 04:59:27 +08:00
// CHECK: ret i8* bitcast (%eh.ThrowInfo* @"_TI1?AUFoo@?A0x{{[^@]*}}@@" to i8*)
[MS] Make sure __GetExceptionInfo works on types with no linkage Fixes PR36327 llvm-svn: 335175
2018-06-21 05:12:20 +08:00
return __GetExceptionInfo(foo_exc);
}