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5518a9d767
Previously committed as 9e08e51a20d0d2b1c5724bb17e969d036fced4cd, and reverted because a dependency commit was reverted, then committed again as 4b574008aef5a7235c1f894ab065fe300d26e786 and reverted again because "dependency commit" 5a391d38ac6c561ba908334d427f26124ed9132e was reverted. But it doesn't seem that 5a391d38ac6c was a real dependency for this. This commit incorporates 4b574008aef5a7235c1f894ab065fe300d26e786 and 18e093faf726d15f210ab4917142beec51848258 by Richard Smith (@zygoloid), with some minor fixes, most notably: - `UncommonValue` renamed to `StructuralValue` - `VK_PRValue` instead of `VK_RValue` as default kind in lvalue and member pointer handling branch in `BuildExpressionFromNonTypeTemplateArgumentValue`; - handling of `StructuralValue` in `IsTypeDeclaredInsideVisitor`; - filling in `SugaredConverted` along with `CanonicalConverted` parameter in `Sema::CheckTemplateArgument`; - minor cleanup in `TemplateInstantiator::transformNonTypeTemplateParmRef`; - `TemplateArgument` constructors refactored; - `ODRHash` calculation for `UncommonValue`; - USR generation for `UncommonValue`; - more correct MS compatibility mangling algorithm (tested on MSVC ver. 19.35; toolset ver. 143); - IR emitting fixed on using a subobject as a template argument when the corresponding template parameter is used in an lvalue context; - `noundef` attribute and opaque pointers in `template-arguments` test; - analysis for C++17 mode is turned off for templates in `warn-bool-conversion` test; in C++17 and C++20 mode, array reference used as a template argument of pointer type produces template argument of UncommonValue type, and `BuildExpressionFromNonTypeTemplateArgumentValue` makes `OpaqueValueExpr` for it, and `DiagnoseAlwaysNonNullPointer` cannot see through it; despite of "These cases should not warn" comment, I'm not sure about correct behavior; I'd expect a suggestion to replace `if` by `if constexpr`; - `temp.arg.nontype/p1.cpp` and `dr18xx.cpp` tests fixed.
378 lines
13 KiB
C++
378 lines
13 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fms-compatibility-version=19 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=i386-pc-win32 | FileCheck %s
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// RUN: %clang_cc1 -std=c++11 -fms-compatibility-version=19 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=x86_64-pc-win32 | FileCheck -check-prefix X64 %s
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// RUN: %clang_cc1 -std=c++17 -fms-compatibility-version=19 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=i386-pc-win32 | FileCheck %s
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// RUN: %clang_cc1 -std=c++17 -fms-compatibility-version=19 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=x86_64-pc-win32 | FileCheck -check-prefix X64 %s
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// RUN: %clang_cc1 -std=c++20 -fms-compatibility-version=19 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=x86_64-pc-win32 | FileCheck -check-prefix CXX20-X64 %s
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// Check that array-to-pointer decay is mangled as the underlying declaration.
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extern const char arr[4] = "foo";
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template<const char*> struct Decay1 {};
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// CHECK: "?decay1@@3U?$Decay1@$1?arr@@3QBDB@@A"
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Decay1<arr> decay1;
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#if __cplusplus >= 201702L
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// Note that this mangling approach can lead to collisions.
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template<const void*> struct Decay2 {};
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// CXX20-X64: "?decay2a@@3U?$Decay2@$1?arr@@3QBDB@@A"
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Decay2<(const void*)arr> decay2a;
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// CXX20-X64: "?decay2b@@3U?$Decay2@$1?arr@@3QBDB@@A"
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Decay2<(const void*)&arr> decay2b;
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#endif
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template<typename T>
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class Class {
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public:
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Class() {}
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};
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class Typename { };
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template<typename T>
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class Nested { };
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template<bool flag>
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class BoolTemplate {
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public:
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BoolTemplate() {}
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};
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template<int param>
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class IntTemplate {
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public:
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IntTemplate() {}
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};
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template<unsigned param>
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class UnsignedIntTemplate {
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public:
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UnsignedIntTemplate() {}
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};
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template<long long param>
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class LongLongTemplate {
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public:
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LongLongTemplate() {}
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};
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template<unsigned long long param>
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class UnsignedLongLongTemplate {
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public:
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UnsignedLongLongTemplate() {}
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};
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template<>
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class BoolTemplate<true> {
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public:
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BoolTemplate() {}
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template<class T> void Foo(T arg) {}
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};
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void template_mangling() {
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Class<Typename> c1;
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// CHECK: call {{.*}} @"??0?$Class@VTypename@@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@VTypename@@@@QEAA@XZ"
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Class<const Typename> c1_const;
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// CHECK: call {{.*}} @"??0?$Class@$$CBVTypename@@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$CBVTypename@@@@QEAA@XZ"
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Class<volatile Typename> c1_volatile;
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// CHECK: call {{.*}} @"??0?$Class@$$CCVTypename@@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$CCVTypename@@@@QEAA@XZ"
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Class<const volatile Typename> c1_cv;
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// CHECK: call {{.*}} @"??0?$Class@$$CDVTypename@@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$CDVTypename@@@@QEAA@XZ"
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Class<Nested<Typename> > c2;
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// CHECK: call {{.*}} @"??0?$Class@V?$Nested@VTypename@@@@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@V?$Nested@VTypename@@@@@@QEAA@XZ"
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Class<int * const> c_intpc;
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// CHECK: call {{.*}} @"??0?$Class@QAH@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@QEAH@@QEAA@XZ"
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Class<int()> c_ft;
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// CHECK: call {{.*}} @"??0?$Class@$$A6AHXZ@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$A6AHXZ@@QEAA@XZ"
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Class<int[]> c_inti;
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// CHECK: call {{.*}} @"??0?$Class@$$BY0A@H@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$BY0A@H@@QEAA@XZ"
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Class<int[5]> c_int5;
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// CHECK: call {{.*}} @"??0?$Class@$$BY04H@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$BY04H@@QEAA@XZ"
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Class<const int[5]> c_intc5;
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// CHECK: call {{.*}} @"??0?$Class@$$BY04$$CBH@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$BY04$$CBH@@QEAA@XZ"
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Class<int * const[5]> c_intpc5;
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// CHECK: call {{.*}} @"??0?$Class@$$BY04QAH@@QAE@XZ"
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// X64: call {{.*}} @"??0?$Class@$$BY04QEAH@@QEAA@XZ"
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BoolTemplate<false> _false;
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// CHECK: call {{.*}} @"??0?$BoolTemplate@$0A@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$BoolTemplate@$0A@@@QEAA@XZ"
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BoolTemplate<true> _true;
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// PR13158
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_true.Foo(1);
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// CHECK: call {{.*}} @"??0?$BoolTemplate@$00@@QAE@XZ"
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// X64: call {{.*}} @"??0?$BoolTemplate@$00@@QEAA@XZ"
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// CHECK: call {{.*}} @"??$Foo@H@?$BoolTemplate@$00@@QAEXH@Z"
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// X64: call {{.*}} @"??$Foo@H@?$BoolTemplate@$00@@QEAAXH@Z"
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IntTemplate<0> zero;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0A@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0A@@@QEAA@XZ"
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IntTemplate<5> five;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$04@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$04@@QEAA@XZ"
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IntTemplate<11> eleven;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0L@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0L@@@QEAA@XZ"
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IntTemplate<256> _256;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0BAA@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0BAA@@@QEAA@XZ"
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IntTemplate<513> _513;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0CAB@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0CAB@@@QEAA@XZ"
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IntTemplate<1026> _1026;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0EAC@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0EAC@@@QEAA@XZ"
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IntTemplate<65535> ffff;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0PPPP@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0PPPP@@@QEAA@XZ"
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IntTemplate<-1> neg_1;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0?0@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0?0@@QEAA@XZ"
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IntTemplate<-9> neg_9;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0?8@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0?8@@QEAA@XZ"
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IntTemplate<-10> neg_10;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0?9@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0?9@@QEAA@XZ"
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IntTemplate<-11> neg_11;
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// CHECK: call {{.*}} @"??0?$IntTemplate@$0?L@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$IntTemplate@$0?L@@@QEAA@XZ"
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UnsignedIntTemplate<4294967295> ffffffff;
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// CHECK: call {{.*}} @"??0?$UnsignedIntTemplate@$0PPPPPPPP@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$UnsignedIntTemplate@$0PPPPPPPP@@@QEAA@XZ"
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LongLongTemplate<-9223372036854775807LL-1LL> int64_min;
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// CHECK: call {{.*}} @"??0?$LongLongTemplate@$0?IAAAAAAAAAAAAAAA@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$LongLongTemplate@$0?IAAAAAAAAAAAAAAA@@@QEAA@XZ"
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LongLongTemplate<9223372036854775807LL> int64_max;
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// CHECK: call {{.*}} @"??0?$LongLongTemplate@$0HPPPPPPPPPPPPPPP@@@QAE@XZ"
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// X64: call {{.*}} @"??0?$LongLongTemplate@$0HPPPPPPPPPPPPPPP@@@QEAA@XZ"
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UnsignedLongLongTemplate<18446744073709551615ULL> uint64_max;
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// CHECK: call {{.*}} @"??0?$UnsignedLongLongTemplate@$0?0@@QAE@XZ"
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// X64: call {{.*}} @"??0?$UnsignedLongLongTemplate@$0?0@@QEAA@XZ"
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UnsignedLongLongTemplate<(unsigned long long)-1> uint64_neg_1;
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// CHECK: call {{.*}} @"??0?$UnsignedLongLongTemplate@$0?0@@QAE@XZ"
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// X64: call {{.*}} @"??0?$UnsignedLongLongTemplate@$0?0@@QEAA@XZ"
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}
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namespace space {
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template<class T> const T& foo(const T& l) { return l; }
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}
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// CHECK: "??$foo@H@space@@YAABHABH@Z"
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// X64: "??$foo@H@space@@YAAEBHAEBH@Z"
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void use() {
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space::foo(42);
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}
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// PR13455
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typedef void (*FunctionPointer)(void);
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template <FunctionPointer function>
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void FunctionPointerTemplate() {
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function();
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}
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void spam() {
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FunctionPointerTemplate<spam>();
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// CHECK: "??$FunctionPointerTemplate@$1?spam@@YAXXZ@@YAXXZ"
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// X64: "??$FunctionPointerTemplate@$1?spam@@YAXXZ@@YAXXZ"
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}
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// Unlike Itanium, there is no character code to indicate an argument pack.
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// Tested with MSVC 2013, the first version which supports variadic templates.
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template <typename ...Ts> void variadic_fn_template(const Ts &...args);
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template <typename... Ts, typename... Us>
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void multi_variadic_fn(Ts... ts, Us... us);
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template <typename... Ts, typename C, typename... Us>
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void multi_variadic_mixed(Ts... ts, C c, Us... us);
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void variadic_fn_instantiate() {
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variadic_fn_template(0, 1, 3, 4);
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variadic_fn_template(0, 1, 'a', "b");
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// Directlly consecutive packs are separated by $$Z...
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multi_variadic_fn<int, int>(1, 2, 3, 4, 5);
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multi_variadic_fn<int, int, int>(1, 2, 3, 4, 5);
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// ...but not if another template parameter is between them.
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multi_variadic_mixed<int, int>(1, 2, 3);
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multi_variadic_mixed<int, int>(1, 2, 3, 4);
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}
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// CHECK: "??$variadic_fn_template@HHHH@@YAXABH000@Z"
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// X64: "??$variadic_fn_template@HHHH@@YAXAEBH000@Z"
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// CHECK: "??$variadic_fn_template@HHD$$BY01D@@YAXABH0ABDAAY01$$CBD@Z"
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// X64: "??$variadic_fn_template@HHD$$BY01D@@YAXAEBH0AEBDAEAY01$$CBD@Z"
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// CHECK: "??$multi_variadic_fn@HH$$ZHHH@@YAXHHHHH@Z"
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// X64: "??$multi_variadic_fn@HH$$ZHHH@@YAXHHHHH@Z"
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// CHECK: "??$multi_variadic_fn@HHH$$ZHH@@YAXHHHHH@Z"
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// X64: "??$multi_variadic_fn@HHH$$ZHH@@YAXHHHHH@Z"
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// CHECK: "??$multi_variadic_mixed@HHH$$V@@YAXHHH@Z"
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// X64: "??$multi_variadic_mixed@HHH$$V@@YAXHHH@Z"
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// CHECK: "??$multi_variadic_mixed@HHHH@@YAXHHHH@Z"
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// X64: "??$multi_variadic_mixed@HHHH@@YAXHHHH@Z"
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template <typename ...Ts>
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struct VariadicClass {
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VariadicClass() { }
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int x;
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};
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void variadic_class_instantiate() {
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VariadicClass<int, char, bool> a;
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VariadicClass<bool, char, int> b;
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}
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// CHECK: call {{.*}} @"??0?$VariadicClass@HD_N@@QAE@XZ"
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// CHECK: call {{.*}} @"??0?$VariadicClass@_NDH@@QAE@XZ"
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template <typename T>
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struct Second {};
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template <typename T, template <class> class>
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struct Type {};
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template <template <class> class T>
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struct Type2 {};
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template <template <class> class T, bool B>
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struct Thing;
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template <template <class> class T>
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struct Thing<T, false> { };
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template <template <class> class T>
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struct Thing<T, true> { };
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void template_template_fun(Type<Thing<Second, true>, Second>) { }
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// CHECK: "?template_template_fun@@YAXU?$Type@U?$Thing@USecond@@$00@@USecond@@@@@Z"
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template <typename T>
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void template_template_specialization();
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template <>
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void template_template_specialization<void (Type<Thing<Second, true>, Second>)>() {
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}
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// CHECK: "??$template_template_specialization@$$A6AXU?$Type@U?$Thing@USecond@@$00@@USecond@@@@@Z@@YAXXZ"
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// PR16788
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template <decltype(nullptr)> struct S1 {};
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void f(S1<nullptr>) {}
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// CHECK: "?f@@YAXU?$S1@$0A@@@@Z"
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struct record {
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int first;
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int second;
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};
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template <const record &>
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struct type1 {
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};
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extern const record inst;
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void recref(type1<inst>) {}
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// CHECK: "?recref@@YAXU?$type1@$1?inst@@3Urecord@@B@@@Z"
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struct _GUID {};
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struct __declspec(uuid("{12345678-1234-1234-1234-1234567890aB}")) uuid;
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template <typename T, const _GUID *G = &__uuidof(T)>
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struct UUIDType1 {};
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template <typename T, const _GUID &G = __uuidof(T)>
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struct UUIDType2 {};
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void fun(UUIDType1<uuid> a) {}
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// CHECK: "?fun@@YAXU?$UUIDType1@Uuuid@@$1?_GUID_12345678_1234_1234_1234_1234567890ab@@3U__s_GUID@@B@@@Z"
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void fun(UUIDType2<uuid> b) {}
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// CHECK: "?fun@@YAXU?$UUIDType2@Uuuid@@$1?_GUID_12345678_1234_1234_1234_1234567890ab@@3U__s_GUID@@B@@@Z"
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template <typename T> struct TypeWithFriendDefinition {
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friend void FunctionDefinedWithInjectedName(TypeWithFriendDefinition<T>) {}
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};
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// CHECK: call {{.*}} @"?FunctionDefinedWithInjectedName@@YAXU?$TypeWithFriendDefinition@H@@@Z"
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void CallFunctionDefinedWithInjectedName() {
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FunctionDefinedWithInjectedName(TypeWithFriendDefinition<int>());
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}
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// CHECK: @"?FunctionDefinedWithInjectedName@@YAXU?$TypeWithFriendDefinition@H@@@Z"
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// We need to be able to feed GUIDs through a couple rounds of template
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// substitution.
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template <const _GUID *G>
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struct UUIDType3 {
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void foo() {}
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};
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template <const _GUID *G>
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struct UUIDType4 : UUIDType3<G> {
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void bar() { UUIDType4::foo(); }
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};
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template struct UUIDType4<&__uuidof(uuid)>;
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// CHECK: "?bar@?$UUIDType4@$1?_GUID_12345678_1234_1234_1234_1234567890ab@@3U__s_GUID@@B@@QAEXXZ"
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// CHECK: "?foo@?$UUIDType3@$1?_GUID_12345678_1234_1234_1234_1234567890ab@@3U__s_GUID@@B@@QAEXXZ"
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#ifdef _WIN64
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template<__int128 N> struct Int128 {};
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template<unsigned __int128 N> struct UInt128 {};
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// X64: define {{.*}} @"?fun_int128@@YAXU?$Int128@$0A@@@@Z"(
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void fun_int128(Int128<0>) {}
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// X64: define {{.*}} @"?fun_int128@@YAXU?$Int128@$0?0@@@Z"(
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void fun_int128(Int128<-1>) {}
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// X64: define {{.*}} @"?fun_int128@@YAXU?$Int128@$0DPPPPPPPPPPPPPPPAAAAAAAAAAAAAAAB@@@@Z"(
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void fun_int128(Int128<(__int128)9223372036854775807 * (__int128)9223372036854775807>) {}
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// X64: define {{.*}} @"?fun_uint128@@YAXU?$UInt128@$0A@@@@Z"(
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void fun_uint128(UInt128<0>) {}
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// X64: define {{.*}} @"?fun_uint128@@YAXU?$UInt128@$0?0@@@Z"(
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void fun_uint128(UInt128<(unsigned __int128)-1>) {}
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// X64: define {{.*}} @"?fun_uint128@@YAXU?$UInt128@$0DPPPPPPPPPPPPPPPAAAAAAAAAAAAAAAB@@@@Z"(
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void fun_uint128(UInt128<(unsigned __int128)9223372036854775807 * (unsigned __int128)9223372036854775807>) {}
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#endif
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#if __cplusplus >= 202002L
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template<float> struct Float {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$Float@$ADPIAAAAA@@@@Z"(
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void f(Float<1.0f>) {}
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template<auto> struct Auto {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$Auto@$MMADPIAAAAA@@@@Z"(
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void f(Auto<1.0f>) {}
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struct S2 {
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int arr[2][3];
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int i;
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void fn();
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} s2;
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template<int&> struct TplSubobjectRef {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$TplSubobjectRef@$CC61?s2@@3US2@@Aarr@@00@01@@@@Z"(
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void f(TplSubobjectRef<s2.arr[1][2]>) {}
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template<int*> struct TplSubobjectPtr {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$TplSubobjectPtr@$CC61?s2@@3US2@@Aarr@@00@01@@@@Z"(
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void f(TplSubobjectPtr<&s2.arr[1][2]>) {}
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struct Derived : S2 {};
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template <int Derived::*> struct TplMemberPtr {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$TplMemberPtr@$0BI@@@@Z"(
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void f(TplMemberPtr<(int Derived::*)&S2::i>) {}
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template <void (Derived::*)()> struct TplMemberFnPtr {};
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// CXX20-X64: define {{.*}} @"?f@@YAXU?$TplMemberFnPtr@$1?fn@S2@@QEAAXXZ@@@Z"(
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void f(TplMemberFnPtr<(void (Derived::*)())&S2::fn>) {}
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#endif
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