Move support for "#pragma STDC FP_CONTRACT" to Parser; add Sema actions

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125474 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index eda8888..a1ad784 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -131,7 +131,7 @@
 Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
            bool CompleteTranslationUnit,
            CodeCompleteConsumer *CodeCompleter)
-  : TheTargetAttributesSema(0),
+  : TheTargetAttributesSema(0), FPFeatures(pp.getLangOptions()),
     LangOpts(pp.getLangOptions()), PP(pp), Context(ctxt), Consumer(consumer),
     Diags(PP.getDiagnostics()), SourceMgr(PP.getSourceManager()),
     ExternalSource(0), CodeCompleter(CodeCompleter), CurContext(0),