[libclc] libclc: Move get_global_id into clc (PR #185180)

[Matt Arsenault via cfe-commits]

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@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <clc/workitem/clc_get_global_offset.h>
+#include <clc/workitem/clc_get_group_id.h>
+#include <clc/workitem/clc_get_local_id.h>
+#include <clc/workitem/clc_get_local_size.h>
+
+_CLC_OVERLOAD _CLC_DEF size_t __clc_get_global_id(uint dim) {
+  return __clc_get_group_id(dim) * __clc_get_local_size(dim) +
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arsenm wrote:

Existing issue, that's fixed separately in the next up the stack 

https://github.com/llvm/llvm-project/pull/185180