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, 43 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr33673.c b/gcc/testsuite/gcc.dg/pr33673.c
new file mode 100644
index 000000000..d238d112c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr33673.c
@@ -0,0 +1,43 @@
+/* PR rtl-optimization/33673 */
+/* { dg-do compile } */
+/* { dg-options "-Os -fno-forward-propagate -fno-guess-branch-probability -fno-move-loop-invariants -fno-tree-dominator-opts -fno-tree-loop-optimize" } */
+
+extern int f1 (int);
+extern int f2 (int);
+
+extern int *a;
+
+static void
+find_reg (int n)
+{
+  int i, pass;
+  unsigned int used[2], used1[2];
+
+  int c = n ? f1 (a[1]) : f2 (a[1]);
+
+  for (i = 64, pass = 0; pass <= 1 && i >= 64; pass++)
+    {
+      if (pass == 1)
+	{
+	  unsigned int *scan_tp_ = used;
+	  unsigned int *scan_fp_ = used1;
+	  int j;
+	  for (j = 0; j < 2; j++)
+	    *scan_tp_++ = *scan_fp_++;
+	}
+      for (i = 0; i < 64; i++)
+	{
+	  int regno = i;
+	  if (n == 0)
+	    if (i == regno)
+	      break;
+	}
+    }
+}
+
+void
+global_alloc ()
+{
+  find_reg (0);
+  find_reg (1);
+}