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

clang/lib/CodeGen/CodeGenModule.cpp

@@ -17,6 +17,7 @@
 #include "CGCall.h"
 #include "CGObjCRuntime.h"
 #include "Mangle.h"
+#include "TargetInfo.h"
 #include "clang/CodeGen/CodeGenOptions.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/DeclObjC.h"
@@ -42,8 +43,9 @@ CodeGenModule::CodeGenModule(ASTContext &C, const CodeGenOptions &CGO,
                              Diagnostic &diags)
   : BlockModule(C, M, TD, Types, *this), Context(C),
     Features(C.getLangOptions()), CodeGenOpts(CGO), TheModule(M),
-    TheTargetData(TD), Diags(diags), Types(C, M, TD), MangleCtx(C), 
-    VtableInfo(*this), Runtime(0),
+    TheTargetData(TD), TheTargetCodeGenInfo(0), Diags(diags),
+    Types(C, M, TD, getTargetCodeGenInfo().getABIInfo()),
+    MangleCtx(C), VtableInfo(*this), Runtime(0),
     MemCpyFn(0), MemMoveFn(0), MemSetFn(0), CFConstantStringClassRef(0),
     VMContext(M.getContext()) {
 
@@ -376,6 +378,8 @@ void CodeGenModule::SetCommonAttributes(const Decl *D,
 
   if (const SectionAttr *SA = D->getAttr<SectionAttr>())
     GV->setSection(SA->getName());
+
+  getTargetCodeGenInfo().SetTargetAttributes(D, GV, *this);
 }
 
 void CodeGenModule::SetInternalFunctionAttributes(const Decl *D,