obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 36 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/memmove-2.c b/gcc/testsuite/gcc.c-torture/execute/builtins/memmove-2.c
new file mode 100644
index 000000000..3afe34313
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/memmove-2.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2004  Free Software Foundation.
+
+   Check builtin memmove and bcopy optimization when length is 1.
+
+   Written by Jakub Jelinek, 9/14/2004.  */
+
+extern void abort (void);
+typedef __SIZE_TYPE__ size_t;
+extern void *memmove (void *, const void *, size_t);
+extern void bcopy (const void *, void *, size_t);
+extern int memcmp (const void *, const void *, size_t);
+
+char p[32] = "abcdefg";
+char *q = p + 4;
+
+void
+main_test (void)
+{
+  /* memmove with length 1 can be optimized into memcpy if it can be
+     expanded inline.  */
+  if (memmove (p + 2, p + 3, 1) != p + 2 || memcmp (p, "abddefg", 8))
+    abort ();
+  if (memmove (p + 1, p + 1, 1) != p + 1 || memcmp (p, "abddefg", 8))
+    abort ();
+  if (memmove (q, p + 4, 1) != p + 4 || memcmp (p, "abddefg", 8))
+    abort ();
+  bcopy (p + 5, p + 6, 1);
+  if (memcmp (p, "abddeff", 8))
+    abort ();
+  bcopy (p + 1, p + 1, 1);
+  if (memcmp (p, "abddeff", 8))
+    abort ();
+  bcopy (q, p + 4, 1);
+  if (memcmp (p, "abddeff", 8))
+    abort ();
+}