RenderScript support in the Frontend

Summary:

Create a new Frontend LangOpt to specify the renderscript language. It
is enabled by the "-x renderscript" option from the driver.

Add a "kernel" function attribute only for RenderScript (an "ignored
attribute" warning is generated otherwise).

Make the NativeHalfType and NativeHalfArgsAndReturns LangOpts be implied
by the RenderScript LangOpt.

Reviewers: rsmith

Subscribers: cfe-commits, srhines

Differential Revision: http://reviews.llvm.org/D21198

llvm-svn: 272342

1 files changed, 15 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index f4cce2febd9..e99876b10b7 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -4185,6 +4185,17 @@ static void handleTypeTagForDatatypeAttr(Sema &S, Decl *D,
                                     Attr.getAttributeSpellingListIndex()));
 }
 
+static void handleKernelAttr(Sema &S, Decl *D, const AttributeList &Attr) {
+  if (S.LangOpts.RenderScript) {
+    D->addAttr(::new (S.Context)
+               KernelAttr(Attr.getRange(), S.Context,
+                          Attr.getAttributeSpellingListIndex()));
+  } else {
+    S.Diag(Attr.getLoc(), diag::warn_attribute_ignored) << "kernel";
+  }
+}
+
+
 //===----------------------------------------------------------------------===//
 // Checker-specific attribute handlers.
 //===----------------------------------------------------------------------===//
@@ -5914,6 +5925,10 @@ static void ProcessDeclAttribute(Sema &S, Scope *scope, Decl *D,
   case AttributeList::AT_TypeTagForDatatype:
     handleTypeTagForDatatypeAttr(S, D, Attr);
     break;
+
+  case AttributeList::AT_Kernel:
+    handleKernelAttr(S, D, Attr);
+    break;
   }
 }