[clang] [llvm] [X86][AVX10.2] Support AVX10.2-SATCVT-DS new instructions. (PR #102592)

[Phoebe Wang via cfe-commits]

================
@@ -0,0 +1,297 @@
+/*===----- avx10_2_512satcvtdsintrin.h - AVX10_2_512SATCVTDS intrinsics ----===
+ *
+ * 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 __IMMINTRIN_H
+#error                                                                         \
+    "Never use <avx10_2_512satcvtdsintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __AVX10_2_512SATCVTDSINTRIN_H
+#define __AVX10_2_512SATCVTDSINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS                                                     \
+  __attribute__((__always_inline__, __nodebug__, __target__("avx10.2-512"),    \
+                 __min_vector_width__(512)))
+
+// 512 bit : Double -> Int
+static __inline__ __m256i __DEFAULT_FN_ATTRS _mm512_cvttspd_epi32(__m512d A) {
+  return ((__m256i)__builtin_ia32_vcvttpd2dqs512_round_mask(
+      (__v8df)A, (__v8si)_mm256_undefined_si256(), (__mmask8)-1,
+      _MM_FROUND_CUR_DIRECTION));
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm512_mask_cvttspd_epi32(__m256i W, __mmask8 U, __m512d A) {
+  return ((__m256i)__builtin_ia32_vcvttpd2dqs512_round_mask(
+      (__v8df)A, (__v8si)W, U, _MM_FROUND_CUR_DIRECTION));
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm512_maskz_cvttspd_epi32(__mmask8 U, __m512d A) {
+  return ((__m256i)__builtin_ia32_vcvttpd2dqs512_round_mask(
+      (__v8df)A, (__v8si)_mm256_setzero_si256(), U, _MM_FROUND_CUR_DIRECTION));
+}
+
+#define _mm512_cvtts_roundpd_epi32(A, R)                                       \
----------------
phoebewang wrote:

Use `__A` etc. for variables, especially in macro.

https://github.com/llvm/llvm-project/pull/102592