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AST: support SwiftCC on MS ABI 

Microsoft has reserved the identifier 'S' as the swift calling
convention.  Decorate the symbols appropriately.  This enables swift on
Windows.

llvm-svn: 324439
This commit is contained in:
Saleem Abdulrasool 2018-02-07 01:55:08 +00:00
parent fd4db5331e
commit 58340526d3
2 changed files with 31 additions and 3 deletions
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6
clang/lib/AST/MicrosoftMangle.cpp
View File

@ -950,11 +950,10 @@ void MicrosoftCXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
}
}
// <postfix> ::= <unqualified-name> [<postfix>]
// ::= <substitution> [<postfix>]
void MicrosoftCXXNameMangler::mangleNestedName(const NamedDecl *ND) {
// <postfix> ::= <unqualified-name> [<postfix>]
// ::= <substitution> [<postfix>]
const DeclContext *DC = getEffectiveDeclContext(ND);
while (!DC->isTranslationUnit()) {
if (isa<TagDecl>(ND) || isa<VarDecl>(ND)) {
unsigned Disc;
@ -2136,6 +2135,7 @@ void MicrosoftCXXNameMangler::mangleCallingConvention(CallingConv CC) {
case CC_X86StdCall: Out << 'G'; break;
case CC_X86FastCall: Out << 'I'; break;
case CC_X86VectorCall: Out << 'Q'; break;
case CC_Swift: Out << 'S'; break;
case CC_X86RegCall: Out << 'w'; break;
}
}

28
clang/test/CodeGenCXX/msabi-swiftcall-cc.cpp Normal file
View File

@ -0,0 +1,28 @@
// RUN: %clang_cc1 -triple i686-unknown-windows-msvc -fdeclspec -emit-llvm %s -o - | FileCheck %s
void __attribute__((__swiftcall__)) f() {}
// CHECK-DAG: @"\01?f@@YSXXZ"
void (__attribute__((__swiftcall__)) *p)();
// CHECK-DAG: @"\01?p@@3P6SXXZA"
namespace {
void __attribute__((__swiftcall__)) __attribute__((__used__)) f() { }
// CHECK-DAG: "\01?f@?A@@YSXXZ"
}
namespace n {
void __attribute__((__swiftcall__)) f() {}
// CHECK-DAG: "\01?f@n@@YSXXZ"
}
struct __declspec(dllexport) S {
S(const S &) = delete;
S & operator=(const S &) = delete;
void __attribute__((__swiftcall__)) m() { }
// CHECK-DAG: "\01?m@S@@QASXXZ"
};
void f(void (__attribute__((__swiftcall__))())) {}
// CHECK-DAG: "\01?f@@YAXP6SXXZ@Z"