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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93118 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index b32ddfd209..fefe924bc4 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Sema.h"
+#include "TargetAttributesSema.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/APFloat.h"
 #include "clang/AST/ASTConsumer.h"
@@ -347,7 +348,8 @@ void Sema::ActOnTranslationUnitScope(SourceLocation Loc, Scope *S) {
 Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
            bool CompleteTranslationUnit,
            CodeCompleteConsumer *CodeCompleter)
-  : LangOpts(pp.getLangOptions()), PP(pp), Context(ctxt), Consumer(consumer),
+  : TheTargetAttributesSema(0),
+    LangOpts(pp.getLangOptions()), PP(pp), Context(ctxt), Consumer(consumer),
     Diags(PP.getDiagnostics()), SourceMgr(PP.getSourceManager()),
     ExternalSource(0), CodeCompleter(CodeCompleter), CurContext(0), 
     CurBlock(0), PackContext(0), ParsingDeclDepth(0),
@@ -368,6 +370,11 @@ Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
                   ExpressionEvaluationContextRecord(PotentiallyEvaluated, 0));
 }
 
+Sema::~Sema() {
+  if (PackContext) FreePackedContext();
+  delete TheTargetAttributesSema;
+}
+
 /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit cast.
 /// If there is already an implicit cast, merge into the existing one.
 /// If isLvalue, the result of the cast is an lvalue.