1 files changed, 119 insertions, 0 deletions
diff --git a/test/builtins/Unit/riscv/mulsi3_test.c b/test/builtins/Unit/riscv/mulsi3_test.c
new file mode 100644
index 000000000000..9033004f11dd
--- /dev/null
+++ b/test/builtins/Unit/riscv/mulsi3_test.c
@@ -0,0 +1,119 @@
+// REQUIRES-ANY: riscv32-target-arch
+// RUN: %clang_builtins %s %librt -o %t && %run %t
+//===-- mulsi3_test.c - Test __mulsi3 -------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __mulsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+#include <limits.h>
+
+#if !defined(__riscv_mul) && __riscv_xlen == 32
+// Based on mulsi3_test.c
+
+COMPILER_RT_ABI si_int __mulsi3(si_int a, si_int b);
+
+int test__mulsi3(si_int a, si_int b, si_int expected)
+{
+    si_int x = __mulsi3(a, b);
+    if (x != expected)
+        printf("error in __mulsi3: %d * %d = %d, expected %d\n",
+               a, b, __mulsi3(a, b), expected);
+    return x != expected;
+}
+#endif
+
+int main()
+{
+#if !defined(__riscv_mul) && __riscv_xlen == 32
+    if (test__mulsi3(0, 0, 0))
+        return 1;
+    if (test__mulsi3(0, 1, 0))
+        return 1;
+    if (test__mulsi3(1, 0, 0))
+        return 1;
+    if (test__mulsi3(0, 10, 0))
+        return 1;
+    if (test__mulsi3(10, 0, 0))
+        return 1;
+    if (test__mulsi3(0, INT_MAX, 0))
+        return 1;
+    if (test__mulsi3(INT_MAX, 0, 0))
+        return 1;
+
+    if (test__mulsi3(0, -1, 0))
+        return 1;
+    if (test__mulsi3(-1, 0, 0))
+        return 1;
+    if (test__mulsi3(0, -10, 0))
+        return 1;
+    if (test__mulsi3(-10, 0, 0))
+        return 1;
+    if (test__mulsi3(0, INT_MIN, 0))
+        return 1;
+    if (test__mulsi3(INT_MIN, 0, 0))
+        return 1;
+
+    if (test__mulsi3(1, 1, 1))
+        return 1;
+    if (test__mulsi3(1, 10, 10))
+        return 1;
+    if (test__mulsi3(10, 1, 10))
+        return 1;
+    if (test__mulsi3(1, INT_MAX, INT_MAX))
+        return 1;
+    if (test__mulsi3(INT_MAX, 1, INT_MAX))
+        return 1;
+
+    if (test__mulsi3(1, -1, -1))
+        return 1;
+    if (test__mulsi3(1, -10, -10))
+        return 1;
+    if (test__mulsi3(-10, 1, -10))
+        return 1;
+    if (test__mulsi3(1, INT_MIN, INT_MIN))
+        return 1;
+    if (test__mulsi3(INT_MIN, 1, INT_MIN))
+        return 1;
+
+    if (test__mulsi3(46340, 46340, 2147395600))
+        return 1;
+    if (test__mulsi3(-46340, 46340, -2147395600))
+        return 1;
+    if (test__mulsi3(46340, -46340, -2147395600))
+        return 1;
+    if (test__mulsi3(-46340, -46340, 2147395600))
+        return 1;
+
+    if (test__mulsi3(4194303, 8192, 34359730176))
+        return 1;
+    if (test__mulsi3(-4194303, 8192, -34359730176))
+        return 1;
+    if (test__mulsi3(4194303, -8192, -34359730176))
+        return 1;
+    if (test__mulsi3(-4194303, -8192, 34359730176))
+        return 1;
+
+    if (test__mulsi3(8192, 4194303, 34359730176))
+        return 1;
+    if (test__mulsi3(-8192, 4194303, -34359730176))
+        return 1;
+    if (test__mulsi3(8192, -4194303, -34359730176))
+        return 1;
+    if (test__mulsi3(-8192, -4194303, 34359730176))
+        return 1;
+#else
+    printf("skipped\n");
+#endif
+
+    return 0;
+}