Hi,
In OpenCL2.x, I think it is not legal to declare/define “Other Data
Types” (The OpenCL™ C 2.0 Specification) ndrange_t / queue_t / … etc,
with global address space in program scope, for example:
test.cl
global ndrange_t nrt;
global queue_t qt;
kernel void test(global int *a) { a[0] = 0; }
Given the OpenCL2.x spec states:
https://www.khronos.org/registry/OpenCL/specs/2.2/html/OpenCL_C.html
In 6.5.1. __global (or global):
“Variables defined at program scope and static variables inside a
function can also be declared in the global address space. They can be
defined with any valid OpenCL C data type except for those in Other
Built-in Data Types. In particular, such program scope variables may
be of any user-defined type, or a pointer to a user-defined type.”
But I use clang-13 to compile the test case, it passes without any
warning or error:
clang-13 --target=amdgcn -cl-std=CL2.0 -S -O3 test.cl
Should we add more checks in:
https://clang.llvm.org/doxygen/SemaDecl_8cpp_source.html#l06825
/// Returns true if there hasn't been any invalid type diagnosed.
static bool diagnoseOpenCLTypes(Sema &Se, VarDecl *NewVD)
Thanks,
CY