[Clang] Define Fuchsia C++ABI
Currently, it is a modified version of the Itanium ABI, with the only
change being that constructors and destructors return 'this'.
Differential Revision: https://reviews.llvm.org/D70575
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 8f9b164..515eb3f 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -487,6 +487,19 @@
bool shouldRTTIBeUnique() const override { return false; }
};
+class FuchsiaCXXABI final : public ItaniumCXXABI {
+public:
+ explicit FuchsiaCXXABI(CodeGen::CodeGenModule &CGM)
+ : ItaniumCXXABI(CGM) {}
+
+private:
+ bool HasThisReturn(GlobalDecl GD) const override {
+ return isa<CXXConstructorDecl>(GD.getDecl()) ||
+ (isa<CXXDestructorDecl>(GD.getDecl()) &&
+ GD.getDtorType() != Dtor_Deleting);
+ }
+};
+
class WebAssemblyCXXABI final : public ItaniumCXXABI {
public:
explicit WebAssemblyCXXABI(CodeGen::CodeGenModule &CGM)
@@ -516,6 +529,9 @@
case TargetCXXABI::iOS64:
return new iOS64CXXABI(CGM);
+ case TargetCXXABI::Fuchsia:
+ return new FuchsiaCXXABI(CGM);
+
// Note that AArch64 uses the generic ItaniumCXXABI class since it doesn't
// include the other 32-bit ARM oddities: constructor/destructor return values
// and array cookies.