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[AST] Mangle LambdaContextDecl for top level decl 

Summary:

Bug filed here: https://bugs.llvm.org/show_bug.cgi?id=45213

To resolve it, we let the checks for mangling LambdaContextDecl to be analogous to ItaniumMangle strategy: https://github.com/llvm/llvm-project/blob/master/clang/lib/AST/ItaniumMangle.cpp#L1829

Differential Revision: https://reviews.llvm.org/D80153
This commit is contained in:
Zequan Wu 2020-06-10 09:37:58 -07:00
parent d9a42ec98a
commit e408cba84f
2 changed files with 11 additions and 3 deletions
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6
clang/lib/AST/MicrosoftMangle.cpp
View File

@ -947,12 +947,12 @@ void MicrosoftCXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
mangleSourceName(Name);
// If the context of a closure type is an initializer for a class
// member (static or nonstatic), it is encoded in a qualified name.
// If the context is a variable or a class member and not a parameter,
// it is encoded in a qualified name.
if (LambdaManglingNumber && LambdaContextDecl) {
if ((isa<VarDecl>(LambdaContextDecl) ||
isa<FieldDecl>(LambdaContextDecl)) &&
LambdaContextDecl->getDeclContext()->isRecord()) {
!isa<ParmVarDecl>(LambdaContextDecl)) {
mangleUnqualifiedName(cast<NamedDecl>(LambdaContextDecl));
}
}

8
clang/test/CodeGenCXX/mangle-ms-cxx17.cpp
View File

@ -19,3 +19,11 @@ double b;
// CHECK-DAG: "?$S4@@3US@@B"
const auto [x2, y2] = f();
// CHECK-DAG: "?i1@@3V<lambda_1>@0@B"
inline const auto i1 = [](auto x) { return 0; };
// CHECK-DAG: "?i2@@3V<lambda_1>@0@B"
inline const auto i2 = [](auto x) { return 1; };
// CHECK-DAG: "??$?RH@<lambda_1>@i1@@QBE?A?<auto>@@H@Z"
// CHECK-DAG: "??$?RH@<lambda_1>@i2@@QBE?A?<auto>@@H@Z"
int g() {return i1(1) + i2(1); }