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[Coroutines] Add proper mangling for operator co_await for MicrosoftABI 

Reviewers: rnk, rsmith

Subscribers: mehdi_amini, cfe-commits

Differential Revision: https://reviews.llvm.org/D25045

llvm-svn: 282645
This commit is contained in:
Gor Nishanov 2016-09-28 22:37:17 +00:00
parent 3888eb66b0
commit e2f51befb8
2 changed files with 27 additions and 8 deletions
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10
clang/lib/AST/MicrosoftMangle.cpp
View File

@ -1089,6 +1089,8 @@ void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
case OO_Array_New: Out << "?_U"; break;
// <operator-name> ::= ?_V # delete[]
case OO_Array_Delete: Out << "?_V"; break;
// <operator-name> ::= ?__L # co_await
case OO_Coawait: Out << "?__L"; break;
case OO_Conditional: {
DiagnosticsEngine &Diags = Context.getDiags();
@ -1098,14 +1100,6 @@ void MicrosoftCXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO,
break;
}
case OO_Coawait: {
DiagnosticsEngine &Diags = Context.getDiags();
unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
"cannot mangle this operator co_await yet");
Diags.Report(Loc, DiagID);
break;
}
case OO_None:
case NUM_OVERLOADED_OPERATORS:
llvm_unreachable("Not an overloaded operator");

25
clang/test/CodeGenCoroutines/microsoft-abi-operator-coawait.cpp Normal file
View File

@ -0,0 +1,25 @@
// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc18.0.0 -fcoroutines -emit-llvm %s -o - -std=c++14 -disable-llvm-passes | FileCheck %s
struct no_suspend {
bool await_ready() { return true; }
template <typename F> void await_suspend(F) {}
void await_resume() {}
};
struct A {
no_suspend operator co_await() { return {}; }
};
struct B {};
no_suspend operator co_await(B const&) { return {}; }
// CHECK-LABEL: f(
extern "C" void f() {
A a;
B b;
// CHECK: call void @"\01??__LA@@QEAA?AUno_suspend@@XZ"(
a.operator co_await();
// CHECK-NEXT: call i8 @"\01??__L@YA?AUno_suspend@@AEBUB@@@Z"(
operator co_await(b);
}