Added Headers to wrapped around the mips builtins.

Author: ukalappa-mips

clang/lib/Headers/CMakeLists.txt

@@ -131,6 +131,7 @@ set(riscv_files
   riscv_ntlh.h
   sifive_vector.h
   andes_vector.h
+  riscv_mips.h
   )
 
 set(spirv_files

clang/lib/Headers/riscv_mips.h

@@ -0,0 +1,34 @@
+//===----- riscv_mips.h - RISC-V MIPS Intrinsic definitions
+//----------------------===//
+//
+// 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_MIPS_H
+#define __RISCV_MIPS_H
+
+#if !defined(__riscv)
+#error "This header is only meant to be used on riscv architecture"
+#endif
+
+#define __DEFAULT_FN_ATTRS                                                     \
+  __attribute__((__always_inline__, __nodebug__, __target__("xmipsexectl")))
+
+static __inline__ void __DEFAULT_FN_ATTRS __mips_pause() {
+  __builtin_riscv_mips_pause();
+}
+
+static __inline__ void __DEFAULT_FN_ATTRS __mips_ehb() {
+  __builtin_riscv_mips_ehb();
+}
+
+static __inline__ void __DEFAULT_FN_ATTRS __mips_ihb() {
+  __builtin_riscv_mips_ihb();
+}
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif

clang/test/CodeGen/builtins-riscv-mips.c renamed to clang/test/CodeGen/RISCV/builtins-riscv-mips.c

@@ -1,6 +1,8 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 6
 // RUN: %clang_cc1 -triple riscv32-linux-elf -O3  -target-feature +xmipsexectl -emit-llvm -o - %s  | FileCheck %s
 
+#include<riscv_mips.h>
+
 // CHECK-LABEL: define dso_local void @test_mips_pause(
 // CHECK-SAME: ) local_unnamed_addr #[[ATTR0:[0-9]+]] {
 // CHECK-NEXT:  [[ENTRY:.*:]]
@@ -9,7 +11,7 @@
 //
 void test_mips_pause()
 {
-	__builtin_riscv_mips_pause();
+	__mips_pause();
 }
 
 // CHECK-LABEL: define dso_local void @test_mips_ehb(
@@ -20,7 +22,7 @@ void test_mips_pause()
 //
 void test_mips_ehb()
 {
-	__builtin_riscv_mips_ehb();
+	__mips_ehb();
 }
 
 // CHECK-LABEL: define dso_local void @test_mips_ihb(
@@ -31,5 +33,5 @@ void test_mips_ehb()
 //
 void test_mips_ihb()
 {
-	__builtin_riscv_mips_ihb();
+	__mips_ihb();
 }