[libclc] Declare workitem built-ins in clc, move ptx-nvidiacl workitem built-ins into clc (llvm#144333)

Changes in this PR:
* Declare most of workitem functions in clc and opencl folders.
* Call clc workitem function in corresponding OpenCL workitem function.
* Move ptx-nvidiacl workitem built-in implementations into clc.
* Move a few amdgcn workitem built-in implementations into clc.
* Include only needed headers in OpenCL workitem functions.
* Implement get_local_linear_id, get_max_sub_group_size,
get_num_sub_groups,
get_sub_group_id, get_sub_group_local_id, get_sub_group_size for
ptx-nvidiacl.

llvm-diff shows this PR adds a few new symbols to nvptx64--nvidiacl.bc.
llvm-diff shows no change to amdgcn--amdhsa.bc, nvptx--.bc and
nvptx64--.bc.

Author: wenju-he

libclc/clc/include/clc/workitem/clc_get_global_id.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_GLOBAL_ID_H__
+#define __CLC_WORKITEM_CLC_GET_GLOBAL_ID_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_global_id(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_GLOBAL_ID_H__

libclc/clc/include/clc/workitem/clc_get_global_offset.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_GLOBAL_OFFSET_H__
+#define __CLC_WORKITEM_CLC_GET_GLOBAL_OFFSET_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_global_offset(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_GLOBAL_OFFSET_H__

libclc/clc/include/clc/workitem/clc_get_global_size.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_GLOBAL_SIZE_H__
+#define __CLC_WORKITEM_CLC_GET_GLOBAL_SIZE_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_global_size(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_GLOBAL_SIZE_H__

libclc/clc/include/clc/workitem/clc_get_group_id.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_GROUP_ID_H__
+#define __CLC_WORKITEM_CLC_GET_GROUP_ID_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_group_id(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_GROUP_ID_H__

libclc/clc/include/clc/workitem/clc_get_local_id.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_LOCAL_ID_H__
+#define __CLC_WORKITEM_CLC_GET_LOCAL_ID_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_local_id(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_LOCAL_ID_H__

libclc/clc/include/clc/workitem/clc_get_local_linear_id.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_LOCAL_LINEAR_ID_H__
+#define __CLC_WORKITEM_CLC_GET_LOCAL_LINEAR_ID_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_local_linear_id();
+
+#endif // __CLC_WORKITEM_CLC_GET_LOCAL_LINEAR_ID_H__

libclc/clc/include/clc/workitem/clc_get_local_size.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_LOCAL_SIZE_H__
+#define __CLC_WORKITEM_CLC_GET_LOCAL_SIZE_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_local_size(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_LOCAL_SIZE_H__

libclc/clc/include/clc/workitem/clc_get_max_sub_group_size.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_MAX_SUB_GROUP_SIZE_H__
+#define __CLC_WORKITEM_CLC_GET_MAX_SUB_GROUP_SIZE_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_DEF _CLC_OVERLOAD uint __clc_get_max_sub_group_size();
+
+#endif // __CLC_WORKITEM_CLC_GET_MAX_SUB_GROUP_SIZE_H__

libclc/clc/include/clc/workitem/clc_get_num_groups.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_NUM_GROUPS_H__
+#define __CLC_WORKITEM_CLC_GET_NUM_GROUPS_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_OVERLOAD _CLC_DECL size_t __clc_get_num_groups(uint dim);
+
+#endif // __CLC_WORKITEM_CLC_GET_NUM_GROUPS_H__

libclc/clc/include/clc/workitem/clc_get_num_sub_groups.h

@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __CLC_WORKITEM_CLC_GET_NUM_SUB_GROUPS_H__
+#define __CLC_WORKITEM_CLC_GET_NUM_SUB_GROUPS_H__
+
+#include <clc/internal/clc.h>
+
+_CLC_DEF _CLC_OVERLOAD uint __clc_get_num_sub_groups();
+
+#endif // __CLC_WORKITEM_CLC_GET_NUM_SUB_GROUPS_H__