[CUDA] Add __declspec spellings for CUDA attributes.

Summary: CUDA attributes are spelled __declspec(__foo__) on Windows.

Reviewers: tra

Subscribers: cfe-commits, rnk

Differential Revision: https://reviews.llvm.org/D28321

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@291134 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 10 deletions

diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index 107a3bdffa..e3c2b0e45d 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -601,49 +601,53 @@ def Constructor : InheritableAttr {
   let Documentation = [Undocumented];
 }
 
+// CUDA attributes are spelled __attribute__((attr)) or __declspec(__attr__).
+
 def CUDAConstant : InheritableAttr {
-  let Spellings = [GNU<"constant">];
+  let Spellings = [GNU<"constant">, Declspec<"__constant__">];
   let Subjects = SubjectList<[Var]>;
   let LangOpts = [CUDA];
   let Documentation = [Undocumented];
 }
 
 def CUDACudartBuiltin : IgnoredAttr {
-  let Spellings = [GNU<"cudart_builtin">];
+  let Spellings = [GNU<"cudart_builtin">, Declspec<"__cudart_builtin__">];
   let LangOpts = [CUDA];
 }
 
 def CUDADevice : InheritableAttr {
-  let Spellings = [GNU<"device">];
+  let Spellings = [GNU<"device">, Declspec<"__device__">];
   let Subjects = SubjectList<[Function, Var]>;
   let LangOpts = [CUDA];
   let Documentation = [Undocumented];
 }
 
 def CUDADeviceBuiltin : IgnoredAttr {
-  let Spellings = [GNU<"device_builtin">];
+  let Spellings = [GNU<"device_builtin">, Declspec<"__device_builtin__">];
   let LangOpts = [CUDA];
 }
 
 def CUDADeviceBuiltinSurfaceType : IgnoredAttr {
-  let Spellings = [GNU<"device_builtin_surface_type">];
+  let Spellings = [GNU<"device_builtin_surface_type">,
+                   Declspec<"__device_builtin_surface_type__">];
   let LangOpts = [CUDA];
 }
 
 def CUDADeviceBuiltinTextureType : IgnoredAttr {
-  let Spellings = [GNU<"device_builtin_texture_type">];
+  let Spellings = [GNU<"device_builtin_texture_type">,
+                   Declspec<"__device_builtin_texture_type__">];
   let LangOpts = [CUDA];
 }
 
 def CUDAGlobal : InheritableAttr {
-  let Spellings = [GNU<"global">];
+  let Spellings = [GNU<"global">, Declspec<"__global__">];
   let Subjects = SubjectList<[Function]>;
   let LangOpts = [CUDA];
   let Documentation = [Undocumented];
 }
 
 def CUDAHost : InheritableAttr {
-  let Spellings = [GNU<"host">];
+  let Spellings = [GNU<"host">, Declspec<"__host__">];
   let Subjects = SubjectList<[Function]>;
   let LangOpts = [CUDA];
   let Documentation = [Undocumented];
@@ -657,7 +661,7 @@ def CUDAInvalidTarget : InheritableAttr {
 }
 
 def CUDALaunchBounds : InheritableAttr {
-  let Spellings = [GNU<"launch_bounds">];
+  let Spellings = [GNU<"launch_bounds">, Declspec<"__launch_bounds__">];
   let Args = [ExprArgument<"MaxThreads">, ExprArgument<"MinBlocks", 1>];
   let LangOpts = [CUDA];
   let Subjects = SubjectList<[ObjCMethod, FunctionLike], WarnDiag,
@@ -669,7 +673,7 @@ def CUDALaunchBounds : InheritableAttr {
 }
 
 def CUDAShared : InheritableAttr {
-  let Spellings = [GNU<"shared">];
+  let Spellings = [GNU<"shared">, Declspec<"__shared__">];
   let Subjects = SubjectList<[Var]>;
   let LangOpts = [CUDA];
   let Documentation = [Undocumented];
@@ -1195,6 +1199,8 @@ def NoThrow : InheritableAttr {
 }
 
 def NvWeak : IgnoredAttr {
+  // No Declspec spelling of this attribute; the CUDA headers use
+  // __attribute__((nv_weak)) unconditionally.
   let Spellings = [GNU<"nv_weak">];
   let LangOpts = [CUDA];
 }