Add a new LangOpt NativeHalfType. This option allows for native half/fp16
operations (as opposed to storage only half/fp16).
Also add some semantic checks for OpenCL half types.
llvm-svn: 173254
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index f73ea98..2a18946 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -4359,6 +4359,17 @@
assert(SCSpec != DeclSpec::SCS_typedef &&
"Parser allowed 'typedef' as storage class VarDecl.");
VarDecl::StorageClass SC = StorageClassSpecToVarDeclStorageClass(SCSpec);
+
+ if (getLangOpts().OpenCL && !getOpenCLOptions().cl_khr_fp16)
+ {
+ // OpenCL v1.2 s6.1.1.1: reject declaring variables of the half and
+ // half array type (unless the cl_khr_fp16 extension is enabled).
+ if (Context.getBaseElementType(R)->isHalfType()) {
+ Diag(D.getIdentifierLoc(), diag::err_opencl_half_declaration) << R;
+ D.setInvalidType();
+ }
+ }
+
if (SCSpec == DeclSpec::SCS_mutable) {
// mutable can only appear on non-static class members, so it's always
// an error here