Add VC BiF support for rnde.

Add roundne function to CMCL math library and builtin translation support
for SPIR-V.

Author: kychendev

IGC/VectorCompiler/CMCL/lib/Headers/cm-cl/detail/builtins.h

@@ -85,6 +85,7 @@ template <typename T> T __cm_cl_abs_float(T src);
 template <typename T> T __cm_cl_ceil(T src);
 template <typename T> T __cm_cl_floor(T src);
 template <typename T> T __cm_cl_trunc(T src);
+template <typename T> T __cm_cl_roundne(T src);
 
 template <typename T> T __cm_cl_minnum(T src0, T src1);
 template <typename T> T __cm_cl_maxnum(T src0, T src1);
@@ -336,6 +337,12 @@ template <typename T> T trunc(T src) {
   return __cm_cl_trunc(src);
 }
 
+template <typename T> T roundne(T src) {
+  static_assert(cl::is_floating_point<T>::value,
+    "Roundne function expects floating poing type.");
+  return __cm_cl_roundne(src);
+}
+
 template <typename T> T min_float(T src0, T src1) {
   static_assert(cl::is_floating_point<T>::value,
                 "illegal type provided in min_float");

IGC/VectorCompiler/CMCL/lib/Headers/cm-cl/math.h

@@ -1,6 +1,6 @@
 /*========================== begin_copyright_notice ============================
 
-Copyright (C) 2021 Intel Corporation
+Copyright (C) 2021-2022 Intel Corporation
 
 SPDX-License-Identifier: MIT
 
@@ -234,6 +234,11 @@ vector<T, width> truncate(vector<T, width> src) {
   return detail::trunc(src.cl_vector());
 }
 
+template <typename T> T roundne(T src) { return detail::roundne(src); }
+template <typename T, int width> vector<T, width> roundne(vector<T, width> src) {
+  return detail::roundne(src.cl_vector());
+}
+
 /*================== Square root ===========================*/
 
 template <typename T> T square_root(T src) {

IGC/VectorCompiler/CMCL/lib/Support/TranslationDescription.json

@@ -2,7 +2,7 @@
   "copyright": [
     "============================ begin_copyright_notice ============================",
     "",
-    "Copyright (C) 2021 Intel Corporation",
+    "Copyright (C) 2021-2022 Intel Corporation",
     "",
     "SPDX-License-Identifier: MIT",
     "",
@@ -412,6 +412,19 @@
         ]
       }
     },
+    "Roundne": {
+      "Name": "roundne",
+      "Operands": [
+        {"Name": "Source", "Kind": "Input"}
+      ],
+      "TranslateInto": {
+        "VC-Intrinsic": "genx_rnde",
+        "ReturnType": {"GetBuiltinReturnType": []},
+        "Operands": [
+          {"GetBuiltinOperand": ["Source"]}
+        ]
+      }
+    },
     "Sqrt": {
       "Name": "sqrt",
       "Operands": [

IGC/VectorCompiler/lib/BiF/spirv_math_builtins_genx.cpp

@@ -1,6 +1,6 @@
 /*========================== begin_copyright_notice ============================
 
-Copyright (C) 2021 Intel Corporation
+Copyright (C) 2021-2022 Intel Corporation
 
 SPDX-License-Identifier: MIT
 
@@ -376,6 +376,7 @@ SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(popcount, ulong,
 SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(ceil, float, cm::math::ceil)
 SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(floor, float, cm::math::floor)
 SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(trunc, float, cm::math::truncate)
+SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(roundne, float, cm::math::roundne)
 
 SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(s_abs, char, cm::math::absolute)
 SPIRV_MATH_BUILTIN_DECL_1ARG_SCALAR_CUSTOM(s_abs, short, cm::math::absolute)
@@ -677,6 +678,12 @@ SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(trunc, float, 4, cm::math::truncate)
 SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(trunc, float, 8, cm::math::truncate)
 SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(trunc, float, 16, cm::math::truncate)
 
+SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(roundne, float, 2, cm::math::roundne)
+SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(roundne, float, 3, cm::math::roundne)
+SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(roundne, float, 4, cm::math::roundne)
+SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(roundne, float, 8, cm::math::roundne)
+SPIRV_MATH_BUILTIN_DECL_1ARG_VECTOR_CUSTOM(roundne, float, 16, cm::math::roundne)
+
 #define SPIRV_MATH_BUILTIN_DECL_2ARG_VECTOR_CUSTOM(FUNC_NAME, ELEMENT_TYPE, N, \
                                                    CUSTOM_NAME)                \
   CM_NODEBUG CM_INLINE cl_vector<ELEMENT_TYPE, N> __spirv_ocl_##FUNC_NAME(     \