[libclc] Reduce OpenCL builtins diff with upstream (#18574)

This commit removes some unused files and otherwise reduces the diff
with upstream's libclc in the non-atomic and non-workitem categories.
Further work will be required to sort out those categories.

Author: frasercrmck

libclc/clc/include/clc/clcfunc.h

@@ -26,4 +26,20 @@
 #define _CLC_DEF __attribute__((always_inline))
 #endif
 
+#if __OPENCL_C_VERSION__ == CL_VERSION_2_0 ||                                  \
+    (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 &&                                 \
+     defined(__opencl_c_generic_address_space))
+#define _CLC_GENERIC_AS_SUPPORTED 1
+// Note that we hard-code the assumption that a non-distinct address space means
+// that the target maps the generic address space to the private address space.
+#ifdef __CLC_DISTINCT_GENERIC_ADDRSPACE__
+#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 1
+#else
+#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 0
+#endif
+#else
+#define _CLC_GENERIC_AS_SUPPORTED 0
+#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 0
+#endif
+
 #endif // __CLC_CLCFUNC_H_

libclc/clc/include/clc/math/clc_fract.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_MATH_CLC_FRACT_H__
 #define __CLC_MATH_CLC_FRACT_H__
 
+#include <clc/internal/clc.h>
+
 #define __CLC_FUNCTION __clc_fract
 #define __CLC_BODY <clc/math/unary_decl_with_ptr.inc>
 

libclc/clc/include/clc/math/clc_frexp.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_MATH_CLC_FREXP_H__
 #define __CLC_MATH_CLC_FREXP_H__
 
+#include <clc/internal/clc.h>
+
 #define __CLC_FUNCTION __clc_frexp
 #define __CLC_BODY <clc/math/unary_decl_with_int_ptr.inc>
 #include <clc/math/gentype.inc>

libclc/clc/include/clc/math/clc_lgamma_r.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_MATH_CLC_LGAMMA_R_H__
 #define __CLC_MATH_CLC_LGAMMA_R_H__
 
+#include <clc/internal/clc.h>
+
 #define __CLC_FUNCTION __clc_lgamma_r
 #define __CLC_BODY <clc/math/unary_decl_with_int_ptr.inc>
 

libclc/clc/include/clc/math/clc_modf.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_MATH_CLC_MODF_H__
 #define __CLC_MATH_CLC_MODF_H__
 
+#include <clc/internal/clc.h>
+
 #define __CLC_FUNCTION __clc_modf
 #define __CLC_BODY <clc/math/unary_decl_with_ptr.inc>
 #include <clc/math/gentype.inc>

libclc/clc/include/clc/math/clc_sincos.h

@@ -9,6 +9,8 @@
 #ifndef __CLC_MATH_CLC_SINCOS_H__
 #define __CLC_MATH_CLC_SINCOS_H__
 
+#include <clc/internal/clc.h>
+
 #define __CLC_BODY <clc/math/unary_decl_with_ptr.inc>
 #define __CLC_FUNCTION __clc_sincos