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, 45 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp23.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp23.c
new file mode 100644
index 000000000..77899a65f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp23.c
@@ -0,0 +1,45 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1-details" } */
+
+blah (int code1, int code2)
+{
+  int i;
+  int n_sets;
+
+  n_sets = (int) (code1 == 32);
+  if (code2 == 64) goto L2; else goto L3;
+
+L2:
+  aa ();
+
+L3:
+  if (n_sets > 1) goto L4; else goto L10;
+
+L4:
+  aos ();
+  i = 0;
+  goto L24;
+
+L10:
+  if (n_sets > 0) goto L25; else goto L8;
+
+L25:
+  i = 0;
+
+L24:
+  aob ();
+  i = i + 1;
+  if (i < n_sets) goto L24; else goto L8;
+
+L8:
+  return;
+}
+
+
+
+/* The n_sets > 0 test can be simplified into n_sets == 1 since the
+   only way to reach the test is when n_sets <= 1, and the only value
+   which satisfies both conditions is n_sets == 1.  */
+/* { dg-final { scan-tree-dump-times "Simplified relational" 1 "vrp1" } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */
+