[libspirv] Implement missing scalar __spirv_ocl_ldexp (#20528)

Fix a regression from 36578fe which deleted scalar implementation.

Additional changes:
* Don't scalarize __spirv_ocl_ldexp since __clc_ldexp could be
vectorized.
* fix build warning in clc/integer/clc_bitfield_insert.h.

Author: wenju-he

libclc/clc/include/clc/integer/clc_bitfield_insert.h

@@ -15,4 +15,6 @@
 #define __CLC_BODY <clc/integer/clc_bitfield_insert.inc>
 #include <clc/integer/gentype.inc>
 
+#undef __CLC_FUNCTION
+
 #endif // __CLC_INTEGER_CLC_BITFIELD_INSERT_H__

libclc/libspirv/lib/generic/math/binary_def_with_uint_second_arg.inc

@@ -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_IMPL_FUNCTION
+#define __CLC_IMPL_FUNCTION(x) __CLC_CONCAT(__clc_, x)
+#endif
+
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE __CLC_FUNCTION(__CLC_GENTYPE x,
+                                                    __CLC_UINTN y) {
+  return __CLC_IMPL_FUNCTION(__CLC_FUNCTION)(x, __CLC_AS_INTN(y));
+}

libclc/libspirv/lib/generic/math/ldexp.cl

@@ -6,21 +6,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include <libspirv/spirv.h>
-
-#include <clc/math/clc_subnormal_config.h>
-#include <clc/math/math.h>
+#include <clc/clc_as_type.h>
 #include <clc/math/clc_ldexp.h>
+#include <libspirv/spirv.h>
 
 #define __CLC_FUNCTION __spirv_ocl_ldexp
-#define __CLC_IMPL_FUNCTION __clc_ldexp
+#define __CLC_IMPL_FUNCTION(x) __clc_ldexp
 
-#define __CLC_ARG2_TYPE int
-#define __CLC_BODY <clc/shared/binary_def_scalarize.inc>
+#define __CLC_BODY <clc/shared/binary_def_with_int_second_arg.inc>
 #include <clc/math/gentype.inc>
-#undef __CLC_ARG2_TYPE
 
-#define __CLC_ARG2_TYPE uint
-#define __CLC_BODY <clc/shared/binary_def_scalarize.inc>
+#define __CLC_BODY <binary_def_with_uint_second_arg.inc>
 #include <clc/math/gentype.inc>
-#undef __CLC_ARG2_TYPE

sycl/test-e2e/Complex/sycl_complex_operator_test.cpp

@@ -1,8 +1,5 @@
 // RUN: %{build} -Wno-error=deprecated-declarations -fsycl-device-code-split=per_kernel -o %t.out
 // RUN: %{run} %t.out
-//
-// XFAIL: target-native_cpu
-// XFAIL-TRACKER: https://github.com/intel/llvm/issues/20142
 
 #include "sycl_complex_helper.hpp"
 #include "sycl_complex_operator_test_cases.hpp"

sycl/test-e2e/syclcompat/math/math_complex.cpp

@@ -33,9 +33,6 @@
 // RUN: %{build} -o %t.out
 // RUN: %{run} %t.out
 
-// XFAIL: target-native_cpu
-// XFAIL-TRACKER: https://github.com/intel/llvm/issues/20142
-
 #include <complex>
 #include <iostream>