Generalize target weirdness handling having proper layering in mind:

 1. Add helper class for sema checks for target attributes
 2. Add helper class for codegen of target attributes

As a proof-of-concept - implement msp430's 'interrupt' attribute.

llvm-svn: 93118

1 files changed, 5 insertions, 1 deletions

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 094e5b56e55..ceab525db12 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Sema.h"
+#include "TargetAttributesSema.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/Expr.h"
@@ -1959,7 +1960,10 @@ static void ProcessDeclAttribute(Scope *scope, Decl *D,
     // Just ignore
     break;
   default:
-    S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
+    // Ask target about the attribute.
+    const TargetAttributesSema &TargetAttrs = S.getTargetAttributesSema();
+    if (!TargetAttrs.ProcessDeclAttribute(scope, D, Attr, S))
+      S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << Attr.getName();
     break;
   }
 }