x86: Add missing rtm tests for strcmp family

Add new tests for:
    strcasecmp
    strncasecmp
    strcmp
    wcscmp

These functions all have avx2_rtm implementations so should be tested.

1 files changed, 70 insertions, 0 deletions

diff --git a/sysdeps/x86/tst-strcmp-rtm.c b/sysdeps/x86/tst-strcmp-rtm.c
new file mode 100644
index 0000000000..371916a2f0
--- /dev/null
+++ b/sysdeps/x86/tst-strcmp-rtm.c
@@ -0,0 +1,70 @@
+/* Test case for strcmp inside a transactionally executing RTM
+   region.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdint.h>
+#include <tst-string-rtm.h>
+
+#ifdef WIDE
+# define CHAR wchar_t
+# define MEMSET wmemset
+# define STRCMP wcscmp
+# define TEST_NAME "wcscmp"
+#else /* !WIDE */
+# define CHAR char
+# define MEMSET memset
+
+# ifndef STRCMP
+#  define STRCMP strcmp
+#  define TEST_NAME "strcmp"
+# endif
+#endif
+
+#define LOOP 3000
+#define STRING_SIZE 1024
+CHAR string1[STRING_SIZE];
+CHAR string2[STRING_SIZE];
+
+__attribute__ ((noinline, noclone))
+static int
+prepare (void)
+{
+  MEMSET (string1, 'a', STRING_SIZE - 1);
+  MEMSET (string2, 'a', STRING_SIZE - 1);
+  if (STRCMP (string1, string2) == 0)
+    return EXIT_SUCCESS;
+  else
+    return EXIT_FAILURE;
+}
+
+__attribute__ ((noinline, noclone))
+static int
+function (void)
+{
+  if (STRCMP (string1, string2) == 0)
+    return 0;
+  else
+    return 1;
+}
+
+
+static int
+do_test (void)
+{
+  return do_test_1 (TEST_NAME, LOOP, prepare, function);
+}