// RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux-gnu -emit-llvm -o - | FileCheck %s // RUN: %clang_cc1 -std=c++20 %s -triple x86_64-windows -emit-llvm -o - | FileCheck %s --check-prefix=MSABI #define fold(x) (__builtin_constant_p(x) ? (x) : (x)) struct A { int a; const int b; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1ALi1ELi2EEEEvv( // MSABI: define {{.*}} @"??$f@$2UA@@H00$$CBH01@@@YAXXZ" template void f(); struct B { const int *p; int k; }; template void f() {} int n = 0; // CHECK: define weak_odr void @_Z1fIXtl1BadL_Z1nEEEEvv( // MSABI: define {{.*}} @"??$f@$2UB@@PEBHE?n@@3HAH0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BLPKi0ELi1EEEEvv( // MSABI: define {{.*}} @"??$f@$2UB@@PEBH0A@H00@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BEEEvv( // MSABI: define {{.*}} @"??$f@$2UB@@PEBH0A@H0A@@@@YAXXZ" template void f(); // These are extensions, but they seem like the obvious manglings. // CHECK: define weak_odr void @_Z1fIXtl1BLPKi32EEEEvv( // MSABI: define {{.*}} @"??$f@$2UB@@PEBH0CA@H0A@@@@YAXXZ" template void f(); #ifndef _WIN32 // FIXME: On MS ABI, we mangle this the same as nullptr, despite considering a // null pointer and zero bitcast to a pointer to be distinct pointer values. // CHECK: define weak_odr void @_Z1fIXtl1BrcPKiLi0EEEEvv( template void f(0))}>(); #endif // Pointers to subobjects. struct Nested { union { int k; int arr[2]; }; } nested[2]; struct Derived : A, Nested { int z; A a_field; } extern derived; // CHECK: define weak_odr void @_Z1fIXtl1BadsoKiL_Z7derivedE16EEEEvv // MSABI: define {{.*}} void @"??$f@$2UB@@PEBH56E?derived@@3UDerived@@Az@@@H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BadsoKiL_Z7derivedE20EEEEvv // MSABI: define {{.*}} void @"??$f@$2UB@@PEBH566E?derived@@3UDerived@@Aa_field@@a@@@H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BadsoKiL_Z6nestedE_EEEEvv // MSABI: define {{.*}} void @"??$f@$2UB@@PEBH56CE?nested@@3PAUNested@@A0A@@k@@@H0A@@@@YAXXZ" template void f(); // Mangling of pointers to nested array elements and past-the-end pointers // is still incorrect in MSVC. #ifndef _WIN32 // CHECK: define weak_odr void @_Z1fIXtl1BadsoKiL_Z6nestedE16_0pEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BadsoKiL_Z7derivedE8pEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1BcvPKiplcvPcadL_Z7derivedELl16EEEEvv template void f(); #endif // References to subobjects. struct BR { const int &r; }; template
void f() {} // CHECK: define weak_odr void @_Z1fIXtl2BRsoKiL_Z7derivedE16EEEEvv // MSABI: define {{.*}} void @"??$f@$2UBR@@AEBH6E?derived@@3UDerived@@Az@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2BRsoKiL_Z6nestedE_EEEEvv // MSABI: define {{.*}} void @"??$f@$2UBR@@AEBH6CE?nested@@3PAUNested@@A0A@@k@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2BRsoKiL_Z6nestedE12_0EEEEvv // MSABI: define {{.*}} void @"??$f@$2UBR@@AEBHC6CE?nested@@3PAUNested@@A00@arr@@00@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2BRsoKiL_Z7derivedE4EEEEvv // MSABI: define {{.*}} void @"??$f@$2UBR@@AEBH66E?derived@@3UDerived@@AA@@b@@@@@YAXXZ" template void f(); #ifndef _WIN32 // CHECK: define weak_odr void @_Z1fIXtl2BRdecvPKiplcvPcadL_Z7derivedELl16EEEEvv template void f(); #endif // Qualification conversions. struct C { const int *p; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1CadsoKiL_Z7derivedE16EEEEvv // MSABI: define {{.*}} void @"??$f@$2UC@@PEBH56E?derived@@3UDerived@@Az@@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1CadsoKiL_Z7derivedE4EEEEvv // MSABI: define {{.*}} void @"??$f@$2UC@@PEBH566E?derived@@3UDerived@@AA@@b@@@@@@YAXXZ" template void f(); // Pointers to members. struct D { const int Derived::*p; int k; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1DLM7DerivedKi0ELi1EEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@HNH00@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1DEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@HNH0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1DadL_ZN7Derived1zEEEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@H82@z@@H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1DmcM7DerivedKiadL_ZN1A1aEEEEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@H8A@@a@@H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1DmcM7DerivedKiadL_ZN1A1bEEEEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@H8A@@b@@H0A@@@@YAXXZ" template void f(); // FIXME: Is the Ut_1 mangling here correct? // CHECK: define weak_odr void @_Z1fIXtl1DmcM7DerivedKiadL_ZN6NestedUt_1kEE8ELi2EEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@H8@Nested@@k@@H01@@@YAXXZ" template void f(); struct MoreDerived : A, Derived { int z; }; // CHECK: define weak_odr void @_Z1fIXtl1DmcM7DerivedKiadL_ZN11MoreDerived1zEEn8EEEEvv // MSABI: define {{.*}} @"??$f@$2UD@@PERDerived@@H8MoreDerived@@z@@H0A@@@@YAXXZ" template void f(); struct DerivedVirtually : virtual A, Nested { int z; }; struct D2 { const int DerivedVirtually::*p; int k; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl2D2LM16DerivedVirtuallyKi0ELi1EEEEvv // MSABI: define {{.*}} @"??$f@$2UD2@@PERDerivedVirtually@@HFA@?0H00@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2D2EEEvv // MSABI: define {{.*}} @"??$f@$2UD2@@PERDerivedVirtually@@HFA@?0H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2D2adL_ZN16DerivedVirtually1zEEEEEvv // MSABI: define {{.*}} @"??$f@$2UD2@@PERDerivedVirtually@@HFBA@A@H0A@@@@YAXXZ" template void f(); // Forward-decl without MS inheritance keyword means unspecified inheritance // which is different from e. g. single inheritance. struct UnspecInherStruct; struct D3 { const int UnspecInherStruct::*p; }; template void f() {} struct UnspecInherStruct { int i; }; // CHECK: define weak_odr void @_Z1fIXtl2D3adL_ZN17UnspecInherStruct1iEEEEEvv // MSABI: define {{.*}} @"??$f@$2UD3@@PERUnspecInherStruct@@HGA@A@A@@@@YAXXZ" template void f(); // Pointers to member functions. // Test struct templates instead of function templates so as to cover // the separate code which handles nullptr in their pointer-to-member arguments. struct Derived2 : A, Nested { void f(); virtual void g(); }; struct D4 { void (Derived2::*p)(); }; template struct S1 { static void fn() {} }; // CHECK: define weak_odr void @_ZN2S1IXtl2D4adL_ZN8Derived21fEvEEEE2fnEv // MSABI: define {{.*}} @"?fn@?$S1@$2UD4@@P8Derived2@@EAAXXZE?f@2@QEAAXXZ@@@SAXXZ" template void S1::fn(); // CHECK: define weak_odr void @_ZN2S1IXtl2D4adL_ZN8Derived21gEvEEEE2fnEv // MSABI: define {{.*}} @"?fn@?$S1@$2UD4@@P8Derived2@@EAAXXZE??_92@$BA@AA@@@SAXXZ" template void S1::fn(); // CHECK: define weak_odr void @_ZN2S1IXtl2D4EEE2fnEv // MSABI: define {{.*}} @"?fn@?$S1@$2UD4@@P8Derived2@@EAAXXZHA@@@@SAXXZ" template void S1::fn(); struct NoInheritance { void f(); }; struct D5 { void (NoInheritance::*p)(); }; template struct S2 { static void fn() {} }; // CHECK: define weak_odr void @_ZN2S2IXtl2D5adL_ZN13NoInheritance1fEvEEEE2fnEv // MSABI: define {{.*}} @"?fn@?$S2@$2UD5@@P8NoInheritance@@EAAXXZE?f@2@QEAAXXZ@@@SAXXZ" template void S2::fn(); // CHECK: define weak_odr void @_ZN2S2IXtl2D5EEE2fnEv // MSABI: define {{.*}} @"?fn@?$S2@$2UD5@@P8NoInheritance@@EAAXXZN@@@SAXXZ" template void S2::fn(); struct NoInheritanceButUnspecified; struct D6 { void (NoInheritanceButUnspecified::*p)(); }; template struct S3 { static void fn() {} }; // CHECK: define weak_odr void @_ZN2S3IXtl2D6EEE2fnEv // MSABI: define {{.*}} @"?fn@?$S3@$2UD6@@P8NoInheritanceButUnspecified@@EAAXXZJA@A@?0@@@SAXXZ" template void S3::fn(); union E { int n; float f; constexpr E() {} constexpr E(int n) : n(n) {} constexpr E(float f) : f(f) {} }; template void f() {} // Union members. // CHECK: define weak_odr void @_Z1fIL1EEEvv( // MSABI: define {{.*}} @"??$f@$7TE@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1EEEEvv( // MSABI: define {{.*}} @"??$f@$7TE@@n@0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1Edi1nLi42EEEEvv( // MSABI: define {{.*}} @"??$f@$7TE@@n@0CK@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1Edi1fLf00000000EEEEvv( // MSABI: define {{.*}} @"??$f@$7TE@@0AA@@@@YAXXZ" template void f(); // immintrin.h vector types. typedef float __m128 __attribute__((__vector_size__(16))); typedef double __m128d __attribute__((__vector_size__(16))); typedef long long __m128i __attribute__((__vector_size__(16))); struct M128 { __m128 a; }; struct M128D { __m128d b; }; struct M128I { __m128i c; }; template void f() {} template void f() {} template void f() {} // MSABI: define {{.*}} @"??$f@$2UM128@@2T__m128@@3MADPIAAAAA@@AEAAAAAAA@@AEAEAAAAA@@AEAIAAAAA@@@@@@@YAXXZ" template void f(); // MSABI: define {{.*}} @"??$f@$2UM128D@@2U__m128d@@3NBDPPAAAAAAAAAAAAA@@BEAAAAAAAAAAAAAAA@@@@@@@YAXXZ" template void f(); // FIXME: We define __m128i as a vector of long long, whereas MSVC appears to // mangle it as if it were a vector of char. // MSABI-FIXME: define {{.*}} @"??$f@$2UM128I@@2T__m128i@@3D00@01@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@0A@@@@@@@YAXXZ" // MSABI: define {{.*}} @"??$f@$2UM128I@@2T__m128i@@3_J00@01@@@@@@YAXXZ" template void f(); // Extensions, and dropping trailing zero-initialized elements of 'tl' // manglings. typedef int __attribute__((ext_vector_type(3))) VI3; struct F { VI3 v; _Complex int ci; _Complex float cf; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2ELi3EEtlCiLi4ELi5EEtlCfLf40c00000ELf40e00000EEEEEvv // MSABI: define {{.*}} @"??$f@$2UF@@2T?$__vector@H$02@__clang@@3H00@01@02@@@2U?$_Complex@H@3@0304@2U?$_Complex@M@3@AEAMAAAAA@AEAOAAAAA@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2ELi3EEtlCiLi4ELi5EEtlCfLf40c00000EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2ELi3EEtlCiLi4ELi5EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2ELi3EEtlCiLi4EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2ELi3EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1ELi2EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FtlDv3_iLi1EEEEEvv template void f(); // CHECK: define weak_odr void @_Z1fIXtl1FEEEvv // MSABI: define {{.*}} @"??$f@$2UF@@2T?$__vector@H$02@__clang@@3H0A@@0A@@0A@@@@2U?$_Complex@H@3@0A@0A@@2U?$_Complex@M@3@AA@AA@@@@@YAXXZ" template void f(); // Unnamed bit-fields. struct G { int : 3; int a : 4; int : 5; int b : 6; int : 7; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1GEEEvv // MSABI: define {{.*}} @"??$f@$2UG@@H0A@H0A@@@@YAXXZ" template void f<(G())>(); // CHECK: define weak_odr void @_Z1fIXtl1GLi1EEEEvv // MSABI: define {{.*}} @"??$f@$2UG@@H00H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1GLi1ELi2EEEEvv // MSABI: define {{.*}} @"??$f@$2UG@@H00H01@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1GLin8ELin32EEEEvv // MSABI: define {{.*}} @"??$f@$2UG@@H0?7H0?CA@@@@YAXXZ" template void f(); // Empty and nearly-empty unions. union H1 {}; union H2 { int : 1, : 2, : 3; }; union H3 { int : 1, a, : 2, b, : 3; }; struct H4 { H2 h2; }; template

void f() {} template

void f() {} template

void f() {} template

void f() {} // CHECK: define weak_odr void @_Z1fIL2H1EEvv // MSABI: define {{.*}} @"??$f@$7TH1@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIL2H2EEvv // MSABI: define {{.*}} @"??$f@$7TH2@@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2H3EEEvv // MSABI: define {{.*}} @"??$f@$7TH3@@a@0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2H3di1aLi1EEEEvv // MSABI: define {{.*}} @"??$f@$7TH3@@a@00@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2H3di1bLi0EEEEvv // MSABI: define {{.*}} @"??$f@$7TH3@@b@0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl2H4EEEvv // MSABI: define {{.*}} @"??$f@$2UH4@@7TH2@@@@@@YAXXZ" template void f(); // Floating-point. struct I { float f; double d; long double ld; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1IEEEvv // MSABI: define {{.*}} @"??$f@$2UI@@MAA@NBA@OBA@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1ILf80000000ELd8000000000000000ELe80000000000000000000EEEEvv // MSABI: define {{.*}} @"??$f@$2UI@@MAIAAAAAAA@NBIAAAAAAAAAAAAAAA@OBIAAAAAAAAAAAAAAA@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1ILf3f800000ELd4000000000000000ELec000c000000000000000EEEEvv // MSABI: define {{.*}} @"??$f@$2UI@@MADPIAAAAA@NBEAAAAAAAAAAAAAAA@OBMAAIAAAAAAAAAAAA@@@@YAXXZ" template void f(); // CHECK: define {{.*}} @_Z1fIXtl1ILf00000000ELd0000000000000000ELe3bcd8000000000000000EEEEvv // Note that "small integer" special-case manglings 'A@', '0', '1', ... are // used here and represent tiny denormal values! // MSABI: define {{.*}} @"??$f@$2UI@@MAA@NBA@OB0@@@YAXXZ" template void f(); // CHECK: define {{.*}} @_Z1fIXtl1ILf00000000ELd0000000000000002ELebbce8000000000000000EEEEvv // ... but the special-case '?' mangling for bit 63 being set is not used. // MSABI: define {{.*}} @"??$f@$2UI@@MAA@NB1OBIAAAAAAAAAAAAAAC@@@@YAXXZ" template void f(); // Base classes and members of class type. struct J1 { int a, b; }; struct JEmpty {}; struct J2 { int c, d; }; struct J : J1, JEmpty, J2 { int e; }; template void f() {} // CHECK: define weak_odr void @_Z1fIXtl1JEEEvv // MSABI: define {{.*}} @"??$f@$2UJ@@2UJ1@@H0A@H0A@@2UJEmpty@@@2UJ2@@H0A@H0A@@H0A@@@@YAXXZ" template void f(); // CHECK: define weak_odr void @_Z1fIXtl1Jtl2J1Li1ELi2EEtl6JEmptyEtl2J2Li3ELi4EELi5EEEEvv // MSABI: define {{.*}} @"??$f@$2UJ@@2UJ1@@H00H01@2UJEmpty@@@2UJ2@@H02H03@H04@@@YAXXZ" template void f(); struct J3 { J1 j1; }; template void f() {} // CHECK: define {{.*}} @_Z1fIXtl2J3tl2J1Li1ELi2EEEEEvv // MSABI: define {{.*}} @"??$f@$2UJ3@@2UJ1@@H00H01@@@@YAXXZ" template void f(); // Arrays. struct K { int n[2][3]; }; template void f() {} // CHECK: define {{.*}} @_Z1fIXtl1KtlA2_A3_itlS1_Li1ELi2EEEEEEvv // MSABI: define {{.*}} @"??$f@$2UK@@3$$BY02H3H00@01@0A@@@@3H0A@@0A@@0A@@@@@@@@YAXXZ" template void f(); // CHECK: define {{.*}} @_Z1fIXtl1KtlA2_A3_itlS1_Li1ELi2ELi3EEtlS1_Li4ELi5ELi6EEEEEEvv // MSABI: define {{.*}} @"??$f@$2UK@@3$$BY02H3H00@01@02@@@3H03@04@05@@@@@@@YAXXZ" template void f(); struct K1 { int a, b; }; struct K2 : K1 { int c; }; struct K3 { K2 k2[2]; }; template void f() {} // CHECK: define {{.*}} @_Z1fIXtl2K3tlA2_2K2tlS1_tl2K1Li1EEEEEEEvv // MSABI: define {{.*}} @"??$f@$2UK3@@3UK2@@2U2@2UK1@@H00H0A@@H0A@@@2U2@2U3@H0A@H0A@@H0A@@@@@@@YAXXZ" template void f(); template void f(); namespace CvQualifiers { struct A { const int a; int *const b; int c; }; template void f() {} // CHECK: define {{.*}} @_ZN12CvQualifiers1fIXtlNS_1AELi0ELPi0ELi1EEEEEvv // MSABI: define {{.*}} @"??$f@$2UA@CvQualifiers@@$$CBH0A@QEAH0A@H00@@CvQualifiers@@YAXXZ" template void f(); using T1 = const int; using T2 = T1[5]; using T3 = const T2; struct B { T3 arr; }; template void f() {} // CHECK: define {{.*}} @_ZN12CvQualifiers1fIXtlNS_1BEtlA5_iLi1ELi2ELi3ELi4ELi5EEEEEEvv // MSABI: define {{.*}} @"??$f@$2UB@CvQualifiers@@3$$CBH00@01@02@03@04@@@@CvQualifiers@@YAXXZ" template void f(); } struct L { signed char a = -1; unsigned char b = -1; short c = -1; unsigned short d = -1; int e = -1; unsigned int f = -1; long g = -1; unsigned long h = -1; long long i = -1; unsigned long long j = -1; }; template void f() {} // CHECK: define {{.*}} @_Z1fIXtl1LLan1ELh255ELsn1ELt65535ELin1ELj4294967295ELln1ELm18446744073709551615ELxn1ELy18446744073709551615EEEEvv // MSABI: define {{.*}} @"??$f@$2UL@@C0?0E0PP@F0?0G0PPPP@H0?0I0PPPPPPPP@J0?0K0PPPPPPPP@_J0?0_K0?0@@@YAXXZ" template void f(); // Template parameter objects. struct M { int n; }; template constexpr const M &f() { return a; } // CHECK: define {{.*}} @_Z1fIXtl1MLi42EEEERKS0_v // CHECK: ret {{.*}} @_ZTAXtl1MLi42EEE // MSABI: define {{.*}} @"??$f@$2UM@@H0CK@@@@YAAEBUM@@XZ" // MSABI: ret {{.*}} @"??__N2UM@@H0CK@@@" template const M &f(); template void g() {} // CHECK: define {{.*}} @_Z1gIXadL_ZTAXtl1MLi10EEEEEEvv // MSABI: define {{.*}} @"??$g@$1??__N2UM@@H09@@@@YAXXZ" template void g<&f()>();