eliben added inline comments.
================
Comment at: include/clang/Basic/Builtins.h:85
@@ +84,3 @@
+ /// \brief Return true if this function is a target-specific builtin
+ bool isTSBuiltin(unsigned ID) const {
+ return ID >= Builtin::FirstTSBuiltin;
----------------
You can also use it in SemaChecking now
================
Comment at: lib/Sema/SemaDecl.cpp:11166
@@ +11165,3 @@
+ !FD->hasAttr<CUDADeviceAttr>() && !FD->hasAttr<CUDAHostAttr>()) {
+ if (getLangOpts().CUDAIsDevice)
+ FD->addAttr(CUDADeviceAttr::CreateImplicit(Context,
FD->getLocation()));
----------------
It is not immediately clear why you would mark target-specific builtins as
__host__ in host compilation mode. So for example __builtin_ptx_read_tid_x
would be callable from a host function when compiling in host mode? Can you
clarify this with a comment here, and also add a relevant test?
http://reviews.llvm.org/D12122
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