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, 38 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20040211-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20040211-1.c
new file mode 100644
index 000000000..34a592679
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/20040211-1.c
@@ -0,0 +1,38 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-cddce2" } */
+
+struct rtx_def;
+typedef struct rtx_def *rtx;
+extern const char rtx_class[];
+union rtunion_def
+{
+  rtx rtx;
+};
+typedef union rtunion_def rtunion;
+struct rtx_def
+{
+  int code;
+  rtunion fld[1];
+};
+static int
+can_move_up (rtx insn, int n_insns)
+{
+  while (n_insns > 0)
+    {
+      insn = (((insn)->fld[1]).rtx);
+      if (((rtx_class[(int) (((insn)->code))]) == 'i'))
+        n_insns--;
+    }
+  return n_insns <= 0;
+}
+int
+com (rtx insn, int blah)
+{
+  if (!can_move_up (insn, blah))
+    foo ();
+}
+
+/* Cddce cannot remove possibly infinite loops and there is no way how to
+   determine whether the loop in can_move_up ends.  */
+/* { dg-final { scan-tree-dump "if " "cddce2"} } */
+/* { dg-final { cleanup-tree-dump "cddce2" } } */