[libclc] Add missing _CLC_OVERLOAD declarations OpenCL files (#2429)

Author: krasznaa

libclc/generic/lib/workitem/get_global_offset.cl

@@ -9,7 +9,7 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF size_t get_global_offset(uint dim) {
+_CLC_DEF _CLC_OVERLOAD size_t get_global_offset(uint dim) {
   switch (dim) {
     case 0:  return __spirv_GlobalOffset_x();
     case 1:  return __spirv_GlobalOffset_y();

libclc/generic/lib/workitem/get_group_id.cl

@@ -9,7 +9,7 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF size_t get_group_id(uint dim) {
+_CLC_DEF _CLC_OVERLOAD size_t get_group_id(uint dim) {
   switch (dim) {
     case 0:  return __spirv_WorkgroupId_x();
     case 1:  return __spirv_WorkgroupId_y();

libclc/generic/lib/workitem/get_local_id.cl

@@ -9,7 +9,7 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF size_t get_local_id(uint dim) {
+_CLC_DEF _CLC_OVERLOAD size_t get_local_id(uint dim) {
   switch (dim) {
     case 0:  return __spirv_LocalInvocationId_x();
     case 1:  return __spirv_LocalInvocationId_y();

libclc/generic/lib/workitem/get_local_size.cl

@@ -9,7 +9,7 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF size_t get_local_size(uint dim) {
+_CLC_DEF _CLC_OVERLOAD size_t get_local_size(uint dim) {
   switch (dim) {
     case 0:  return __spirv_WorkgroupSize_x();
     case 1:  return __spirv_WorkgroupSize_y();

libclc/generic/lib/workitem/get_num_groups.cl

@@ -9,7 +9,7 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF size_t get_num_groups(uint dim) {
+_CLC_DEF _CLC_OVERLOAD size_t get_num_groups(uint dim) {
   switch (dim) {
     case 0:  return __spirv_NumWorkgroups_x();
     case 1:  return __spirv_NumWorkgroups_y();

libclc/generic/lib/workitem/get_work_dim.cl

@@ -9,6 +9,4 @@
 #include <clc/clc.h>
 #include <spirv/spirv.h>
 
-_CLC_DEF uint get_work_dim(void) {
-  return __spirv_WorkDim();
-}
+_CLC_DEF _CLC_OVERLOAD uint get_work_dim(void) { return __spirv_WorkDim(); }