[clang] [RISCV] Implement Clang Builtins for XCVmac Extension in CV32E40P (PR #110623)

[Craig Topper via cfe-commits]

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@@ -0,0 +1,111 @@
+/*===---- riscv_corev_mac.h - CORE-V multiply accumulate 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 __RISCV_COREV_MAC_H
+#define __RISCV_COREV_MAC_H
+
+#include <stdint.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#if defined(__riscv_xcvmac)
+
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__))
+
+static __inline__ long __DEFAULT_FN_ATTRS __riscv_cv_mac_mac(long a, long b,
+                                                             long c) {
+  return __builtin_riscv_cv_mac_mac(a, b, c);
+}
+
+static __inline__ long __DEFAULT_FN_ATTRS __riscv_cv_mac_msu(long a, long b,
+                                                             long c) {
+  return __builtin_riscv_cv_mac_msu(a, b, c);
+}
+
+#define __riscv_cv_mac_muluN(rs1, rs2, SHIFT)                                  \
+  (unsigned long)__builtin_riscv_cv_mac_muluN(                                 \
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topperc wrote:

Range of the immediate need to be checked in `SemaRISCV::CheckBuiltinFunctionCall`

https://github.com/llvm/llvm-project/pull/110623