[PATCH] D42768: AST: add an extension to support SwiftCC on MS ABI
Saleem Abdulrasool via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Tue Feb 6 14:56:47 PST 2018
compnerd updated this revision to Diff 133087.
compnerd added a comment.
address design changes
Repository:
rC Clang
https://reviews.llvm.org/D42768
Files:
lib/AST/MicrosoftMangle.cpp
test/CodeGenCXX/msabi-swiftcall-cc.cpp
Index: test/CodeGenCXX/msabi-swiftcall-cc.cpp
===================================================================
--- /dev/null
+++ test/CodeGenCXX/msabi-swiftcall-cc.cpp
@@ -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@@YAU?$__swiftcall__ at X@@XZ"
+
+void (__attribute__((__swiftcall__)) *p)();
+// CHECK-DAG: @"\01?p@@3P6AU?$__swiftcall__ at X@@XZA"
+
+namespace {
+void __attribute__((__swiftcall__)) __attribute__((__used__)) f() { }
+// CHECK-DAG: "\01?f@?A@@YAU?$__swiftcall__ at X@@XZ"
+}
+
+namespace n {
+void __attribute__((__swiftcall__)) f() {}
+// CHECK-DAG: "\01?f at n@@YAU?$__swiftcall__ at X@@XZ"
+}
+
+struct __declspec(dllexport) S {
+ S(const S &) = delete;
+ S & operator=(const S &) = delete;
+ void __attribute__((__swiftcall__)) m() { }
+ // CHECK-DAG: "\01?m at S@@QAAU?$__swiftcall__ at X@@XZ"
+};
+
+void f(void (__attribute__((__swiftcall__))())) {}
+// CHECK-DAG: "\01?f@@YAXP6AU?$__swiftcall__ at X@@XZ at Z"
+
Index: lib/AST/MicrosoftMangle.cpp
===================================================================
--- lib/AST/MicrosoftMangle.cpp
+++ lib/AST/MicrosoftMangle.cpp
@@ -316,6 +316,17 @@
return ND == Structor || getStructor(ND) == Structor;
}
+ void mangleSwiftCall(QualType T, SourceRange R, QualifierMangleMode QMM) {
+ llvm::SmallString<64> TemplateMangling;
+ llvm::raw_svector_ostream Stream(TemplateMangling);
+ MicrosoftCXXNameMangler Extra(Context, Stream);
+
+ Stream << "?$";
+ Extra.mangleSourceName("__swiftcall__");
+ Extra.mangleType(T, R, QMM);
+ mangleArtificalTagType(TTK_Struct, TemplateMangling);
+ }
+
void mangleUnqualifiedName(const NamedDecl *ND) {
mangleUnqualifiedName(ND, ND->getDeclName());
}
@@ -950,11 +961,10 @@
}
}
+// <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;
@@ -1959,7 +1969,7 @@
mangleQualifiers(Quals, /*IsMember=*/false);
}
- mangleCallingConvention(CC);
+ mangleCallingConvention(CC == CC_Swift ? CC_C : CC);
// <return-type> ::= <type>
// ::= @ # structors (they have no declared return type)
@@ -2017,7 +2027,10 @@
} else {
if (ResultType->isVoidType())
ResultType = ResultType.getUnqualifiedType();
- mangleType(ResultType, Range, QMM_Result);
+ if (CC == CC_Swift)
+ mangleSwiftCall(ResultType, Range, QMM_Result);
+ else
+ mangleType(ResultType, Range, QMM_Result);
}
}
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