1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/memcmp.c b/gcc/testsuite/gcc.c-torture/execute/builtins/memcmp.c
new file mode 100644
index 000000000..5489048f5
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/memcmp.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 2001  Free Software Foundation.
+
+   Ensure that short builtin memcmp are optimized and perform correctly.
+   On architectures with a cmpstrsi instruction, this test doesn't determine
+   which optimization is being performed, but it does check for correctness.
+
+   Written by Roger Sayle, 12/02/2001.
+   Additional tests by Roger Sayle after PR 3508, 12/26/2001.  */
+
+extern void abort (void);
+typedef __SIZE_TYPE__ size_t;
+extern int memcmp (const void *, const void *, size_t);
+extern char *strcpy (char *, const char *);
+extern void link_error (void);
+
+void
+main_test (void)
+{
+  char str[8];
+
+  strcpy (str, "3141");
+
+  if ( memcmp (str, str+2, 0) != 0 )
+    abort ();
+  if ( memcmp (str+1, str+3, 0) != 0 )
+    abort ();
+
+  if ( memcmp (str+1, str+3, 1) != 0 )
+    abort ();
+  if ( memcmp (str, str+2, 1) >= 0 )
+    abort ();
+  if ( memcmp (str+2, str, 1) <= 0 )
+    abort ();
+
+  if (memcmp ("abcd", "efgh", 4) >= 0)
+    link_error ();
+  if (memcmp ("abcd", "abcd", 4) != 0)
+    link_error ();
+  if (memcmp ("efgh", "abcd", 4) <= 0)
+    link_error ();
+}