OpenCL: CL2.0 atomic types

OpenCL C Spec v2.0 Section 6.13.11

- Made c11 _Atomic being accepted only for c11 compilations

- Implemented CL2.0 atomics by aliasing them to the corresponding c11 atomic types using implicit typedef

- Added diagnostics for atomics Khronos extension enabling

llvm-svn: 231932

1 files changed, 56 insertions, 0 deletions

diff --git a/clang/test/Parser/opencl-atomics-cl20.cl b/clang/test/Parser/opencl-atomics-cl20.cl
new file mode 100644
index 00000000000..c62142b2aa6
--- /dev/null
+++ b/clang/test/Parser/opencl-atomics-cl20.cl
@@ -0,0 +1,56 @@
+// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only
+// RUN: %clang_cc1 %s -verify  -fsyntax-only -cl-std=CL2.0 -DCL20
+// RUN: %clang_cc1 %s -verify  -fsyntax-only -cl-std=CL2.0 -DCL20 -DEXT
+
+#ifdef EXT
+#pragma OPENCL EXTENSION cl_khr_int64_base_atomics:enable
+#pragma OPENCL EXTENSION cl_khr_int64_extended_atomics:enable
+#pragma OPENCL EXTENSION cl_khr_fp64:enable
+#endif
+
+void atomic_types_test() {
+// OpenCL v2.0 s6.13.11.6 defines supported atomic types.
+  atomic_int i;
+  atomic_uint ui;
+  atomic_long l;
+  atomic_ulong ul;
+  atomic_float f;
+  atomic_double d;
+  atomic_flag fl;
+  atomic_intptr_t ip;
+  atomic_uintptr_t uip;
+  atomic_size_t s;
+  atomic_ptrdiff_t pd;
+// OpenCL v2.0 s6.13.11.8, _Atomic type specifier and _Atomic type qualifier
+// are not supported by OpenCL.
+  _Atomic int i; // expected-error {{use of undeclared identifier '_Atomic'}}
+}
+#ifndef CL20
+// expected-error@-16 {{use of undeclared identifier 'atomic_int'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_uint'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_long'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_ulong'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_float'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_double'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_flag'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_intptr_t'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_uintptr_t'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_size_t'}}
+// expected-error@-16 {{use of undeclared identifier 'atomic_ptrdiff_t'}}
+#elif !EXT
+// expected-error@-26 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error@-27 {{use of type 'atomic_long' (aka '_Atomic(long)') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error@-27 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error@-28 {{use of type 'atomic_ulong' (aka '_Atomic(unsigned long)') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error@-27 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error@-28 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error@-29 {{use of type 'atomic_double' (aka '_Atomic(double)') requires cl_khr_fp64 extension to be enabled}}
+// expected-error-re@-28 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error-re@-29 {{use of type 'atomic_intptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error-re@-29 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error-re@-30 {{use of type 'atomic_uintptr_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error-re@-30 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error-re@-31 {{use of type 'atomic_size_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
+// expected-error-re@-31 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_base_atomics extension to be enabled}}
+// expected-error-re@-32 {{use of type 'atomic_ptrdiff_t' (aka '_Atomic({{.+}})') requires cl_khr_int64_extended_atomics extension to be enabled}}
+#endif