r177035 - Add support for the 'endian' attribute for OpenCL.

[Joey Gouly]

Author: joey
Date: Thu Mar 14 04:54:43 2013
New Revision: 177035

URL: http://llvm.org/viewvc/llvm-project?rev=177035&view=rev
Log:
Add support for the 'endian' attribute for OpenCL.

Added:
    cfe/trunk/test/SemaOpenCL/endian-attr.cl
Modified:
    cfe/trunk/include/clang/Basic/Attr.td
    cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
    cfe/trunk/lib/Sema/SemaDeclAttr.cpp

Modified: cfe/trunk/include/clang/Basic/Attr.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/Attr.td?rev=177035&r1=177034&r2=177035&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/Attr.td (original)
+++ cfe/trunk/include/clang/Basic/Attr.td Thu Mar 14 04:54:43 2013
@@ -632,6 +632,11 @@ def ReqdWorkGroupSize : InheritableAttr
               UnsignedArgument<"ZDim">];
 }
 
+def Endian : InheritableAttr {
+  let Spellings = [GNU<"endian">];
+  let Args = [IdentifierArgument<"platform">];
+}
+
 def WorkGroupSizeHint :  InheritableAttr {
   let Spellings = [GNU<"work_group_size_hint">];
   let Args = [UnsignedArgument<"XDim">, 

Modified: cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td?rev=177035&r1=177034&r2=177035&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td (original)
+++ cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td Thu Mar 14 04:54:43 2013
@@ -2150,6 +2150,8 @@ def warn_attribute_protected_visibility
   Warning<"target does not support 'protected' visibility; using 'default'">,
   InGroup<DiagGroup<"unsupported-visibility">>;
 def err_mismatched_visibility: Error<"visibility does not match previous declaration">;
+def warn_attribute_unknown_endian : Warning<"unknown endian '%0'">,
+  InGroup<IgnoredAttributes>;
 def note_previous_attribute : Note<"previous attribute is here">;
 def err_unknown_machine_mode : Error<"unknown machine mode %0">;
 def err_unsupported_machine_mode : Error<"unsupported machine mode %0">;

Modified: cfe/trunk/lib/Sema/SemaDeclAttr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaDeclAttr.cpp?rev=177035&r1=177034&r2=177035&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaDeclAttr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaDeclAttr.cpp Thu Mar 14 04:54:43 2013
@@ -2799,6 +2799,15 @@ static void handleVecTypeHint(Sema &S, D
                                                ParmType, Attr.getLoc()));
 }
 
+static void handleEndianAttr(Sema &S, Decl *D, const AttributeList &Attr) {
+  if (!dyn_cast<VarDecl>(D))
+    S.Diag(Attr.getLoc(), diag::warn_attribute_wrong_decl_type) << "endian"
+                                                                << 9;
+  StringRef EndianType = Attr.getParameterName()->getName();
+  if (EndianType != "host" && EndianType != "device")
+    S.Diag(Attr.getLoc(), diag::warn_attribute_unknown_endian) << EndianType;
+}
+
 SectionAttr *Sema::mergeSectionAttr(Decl *D, SourceRange Range,
                                     StringRef Name,
                                     unsigned AttrSpellingListIndex) {
@@ -4783,6 +4792,10 @@ static void ProcessInheritableDeclAttr(S
   case AttributeList::AT_VecTypeHint:
     handleVecTypeHint(S, D, Attr); break;
 
+  case AttributeList::AT_Endian:
+    handleEndianAttr(S, D, Attr);
+    break;
+
   case AttributeList::AT_InitPriority: 
       handleInitPriorityAttr(S, D, Attr); break;
       

Added: cfe/trunk/test/SemaOpenCL/endian-attr.cl
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaOpenCL/endian-attr.cl?rev=177035&view=auto
==============================================================================
--- cfe/trunk/test/SemaOpenCL/endian-attr.cl (added)
+++ cfe/trunk/test/SemaOpenCL/endian-attr.cl Thu Mar 14 04:54:43 2013
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -verify %s
+
+constant long a __attribute__((endian(host))) = 100;
+
+constant long b __attribute__((endian(device))) = 100;
+
+constant long c __attribute__((endian(none))) = 100; // expected-warning {{unknown endian 'none'}}
+
+void func() __attribute__((endian(host))); // expected-warning {{endian attribute only applies to variables}}