zequanwu updated this revision to Diff 266339.
zequanwu added a comment.
Add `19.20` version. Only add mangled type for version 19. 20 or later to be
abi-compatible with https://godbolt.org/z/Bhc__A
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D80409/new/
https://reviews.llvm.org/D80409
Files:
clang/include/clang/Basic/LangOptions.h
clang/lib/AST/MicrosoftMangle.cpp
clang/test/CodeGenCXX/mangle-ms-auto-templates.cpp
Index: clang/test/CodeGenCXX/mangle-ms-auto-templates.cpp
===================================================================
--- /dev/null
+++ clang/test/CodeGenCXX/mangle-ms-auto-templates.cpp
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -std=c++17 -fms-compatibility-version=19.20 -emit-llvm %s -o - -fms-extensions -fdelayed-template-parsing -triple=x86_64-pc-windows-msvc | FileCheck %s
+
+template <auto a>
+class AutoParmTemplate {
+public:
+ AutoParmTemplate() {}
+};
+
+template <auto...>
+class AutoParmsTemplate {
+public:
+ AutoParmsTemplate() {}
+};
+
+void template_mangling() {
+ AutoParmTemplate<0> auto_int;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$MH0A@@@QEAA@XZ"
+ AutoParmTemplate<false> auto_bool;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$M_N0A@@@QEAA@XZ"
+ AutoParmTemplate<'a'> auto_char;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$MD0GB@@@QEAA@XZ"
+ AutoParmTemplate<9223372036854775807LL> int64_max;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$M_J0HPPPPPPPPPPPPPPP@@@QEAA@XZ"
+ AutoParmTemplate<-9223372036854775807LL - 1LL> int64_min;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$M_J0?IAAAAAAAAAAAAAAA@@@QEAA@XZ"
+ AutoParmTemplate<(unsigned long long)-1> uint64_neg_1;
+ // CHECK: call {{.*}} @"??0?$AutoParmTemplate@$M_K0?0@@QEAA@XZ"
+
+ AutoParmsTemplate<0, false, 'a'> c1;
+ // CHECK: call {{.*}} @"??0?$AutoParmsTemplate@$MH0A@$M_N0A@$MD0GB@@@QEAA@XZ"
+ AutoParmsTemplate<(unsigned long)1, 9223372036854775807LL> c2;
+ // CHECK: call {{.*}} @"??0?$AutoParmsTemplate@$MK00$M_J0HPPPPPPPPPPPPPPP@@@QEAA@XZ"
+}
Index: clang/lib/AST/MicrosoftMangle.cpp
===================================================================
--- clang/lib/AST/MicrosoftMangle.cpp
+++ clang/lib/AST/MicrosoftMangle.cpp
@@ -378,8 +378,10 @@
void mangleFunctionClass(const FunctionDecl *FD);
void mangleCallingConvention(CallingConv CC);
void mangleCallingConvention(const FunctionType *T);
- void mangleIntegerLiteral(const llvm::APSInt &Number, bool IsBoolean);
- void mangleExpression(const Expr *E);
+ void mangleIntegerLiteral(const llvm::APSInt &Number,
+ const NonTypeTemplateParmDecl *PD = nullptr,
+ QualType *TemplateArgType = nullptr);
+ void mangleExpression(const Expr *E, const NonTypeTemplateParmDecl *PD);
void mangleThrowSpecification(const FunctionProtoType *T);
void mangleTemplateArgs(const TemplateDecl *TD,
@@ -1357,24 +1359,35 @@
mangleUnqualifiedName(TD);
}
-void MicrosoftCXXNameMangler::mangleIntegerLiteral(const llvm::APSInt &Value,
- bool IsBoolean) {
- // <integer-literal> ::= $0 <number>
- Out << "$0";
- // Make sure booleans are encoded as 0/1.
- if (IsBoolean && Value.getBoolValue())
- mangleNumber(1);
- else if (Value.isSigned())
+void MicrosoftCXXNameMangler::mangleIntegerLiteral(
+ const llvm::APSInt &Value, const NonTypeTemplateParmDecl *PD,
+ QualType *TemplateArgType) {
+ // <integer-literal> ::= $ [<type>] 0 <number>
+ Out << "$";
+
+ // mangle argument type if parmeter is auto
+ if (getASTContext().getLangOpts().isCompatibleWithMSVC(
+ LangOptions::MSVC2019) &&
+ PD && PD->getType()->getTypeClass() == Type::Auto && TemplateArgType) {
+ Out << "M";
+ mangleType(*TemplateArgType, SourceRange(), QMM_Drop);
+ }
+
+ Out << "0";
+
+ if (Value.isSigned())
mangleNumber(Value.getSExtValue());
else
mangleNumber(Value.getZExtValue());
}
-void MicrosoftCXXNameMangler::mangleExpression(const Expr *E) {
+void MicrosoftCXXNameMangler::mangleExpression(
+ const Expr *E, const NonTypeTemplateParmDecl *PD) {
// See if this is a constant expression.
llvm::APSInt Value;
if (E->isIntegerConstantExpr(Value, Context.getASTContext())) {
- mangleIntegerLiteral(Value, E->getType()->isBooleanType());
+ QualType T = E->getType();
+ mangleIntegerLiteral(Value, PD, &T);
return;
}
@@ -1448,10 +1461,12 @@
}
break;
}
- case TemplateArgument::Integral:
+ case TemplateArgument::Integral: {
+ QualType T = TA.getIntegralType();
mangleIntegerLiteral(TA.getAsIntegral(),
- TA.getIntegralType()->isBooleanType());
+ cast<NonTypeTemplateParmDecl>(Parm), &T);
break;
+ }
case TemplateArgument::NullPtr: {
QualType T = TA.getNullPtrType();
if (const MemberPointerType *MPT = T->getAs<MemberPointerType>()) {
@@ -1473,16 +1488,18 @@
// However, we are free to use 0 *if* we would use multiple fields for
// non-nullptr member pointers.
if (!RD->nullFieldOffsetIsZero()) {
- mangleIntegerLiteral(llvm::APSInt::get(-1), /*IsBoolean=*/false);
+ mangleIntegerLiteral(llvm::APSInt::get(-1),
+ cast<NonTypeTemplateParmDecl>(Parm), &T);
return;
}
}
}
- mangleIntegerLiteral(llvm::APSInt::getUnsigned(0), /*IsBoolean=*/false);
+ mangleIntegerLiteral(llvm::APSInt::getUnsigned(0),
+ cast<NonTypeTemplateParmDecl>(Parm), &T);
break;
}
case TemplateArgument::Expression:
- mangleExpression(TA.getAsExpr());
+ mangleExpression(TA.getAsExpr(), cast<NonTypeTemplateParmDecl>(Parm));
break;
case TemplateArgument::Pack: {
ArrayRef<TemplateArgument> TemplateArgs = TA.getPackAsArray();
@@ -1814,8 +1831,7 @@
if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
Extra.mangleSourceName("_AS");
- Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(TargetAS),
- /*IsBoolean*/ false);
+ Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(TargetAS));
} else {
switch (AS) {
default:
@@ -2700,8 +2716,7 @@
Stream << "?$";
Extra.mangleSourceName("__vector");
Extra.mangleType(QualType(ET, 0), Range, QMM_Escape);
- Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumElements()),
- /*IsBoolean=*/false);
+ Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumElements()));
mangleArtificialTagType(TTK_Union, TemplateMangling, {"__clang"});
}
@@ -2940,7 +2955,7 @@
Stream << "?$";
Extra.mangleSourceName("ocl_pipe");
Extra.mangleType(ElementType, Range, QMM_Escape);
- Extra.mangleIntegerLiteral(llvm::APSInt::get(T->isReadOnly()), true);
+ Extra.mangleIntegerLiteral(llvm::APSInt::get(T->isReadOnly()));
mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
}
@@ -2980,8 +2995,7 @@
Extra.mangleSourceName("_UExtInt");
else
Extra.mangleSourceName("_ExtInt");
- Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumBits()),
- /*IsBoolean=*/false);
+ Extra.mangleIntegerLiteral(llvm::APSInt::getUnsigned(T->getNumBits()));
mangleArtificialTagType(TTK_Struct, TemplateMangling, {"__clang"});
}
Index: clang/include/clang/Basic/LangOptions.h
===================================================================
--- clang/include/clang/Basic/LangOptions.h
+++ clang/include/clang/Basic/LangOptions.h
@@ -119,6 +119,7 @@
MSVC2017 = 1910,
MSVC2017_5 = 1912,
MSVC2017_7 = 1914,
+ MSVC2019 = 1920,
};
/// Clang versions with different platform ABI conformance.
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