[ASTPrinter] Print all SPI attributes, including the inherited ones

Author: xymus

lib/AST/ASTPrinter.cpp

@@ -990,6 +990,17 @@ void PrintAST::printAttributes(const Decl *D) {
       }
     }
 
+    // SPI groups
+    if (Options.PrintSPIs) {
+      interleave(D->getSPIGroups(),
+             [&](Identifier spiName) {
+               Printer.printAttrName("_spi", true);
+               Printer << "(" << spiName << ") ";
+             },
+             [&] { Printer << ""; });
+      Options.ExcludeAttrList.push_back(DAK_SPIAccessControl);
+    }
+
     // Don't print any contextual decl modifiers.
     // We will handle 'mutating' and 'nonmutating' separately.
     if (isa<AccessorDecl>(D)) {