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, 52 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp25.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp25.c
new file mode 100644
index 000000000..fa8bbfd4c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp25.c
@@ -0,0 +1,52 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-vrp1-details" } */
+
+extern void abort ();
+int tree_code_length[100];
+
+blah (int code1)
+{
+  unsigned char D18670;
+
+  if (code1 != 53) goto L0; else goto L1;
+
+L0:
+  abort ();
+
+L1:
+  D18670 = tree_code_length[53];
+  if (D18670 <= 1) goto L2; else goto L3;
+
+L2:
+  abort ();
+
+L3:
+  if (D18670 == 2) goto L4; else goto L5;
+
+L4:
+  abort ();
+
+L5:
+  arf ();
+  if (code1 != 53) goto L6; else goto L7;
+
+L6:
+  abort ();
+
+L7:
+  if (D18670 <= 2) goto L8; else goto L9;
+
+L8:
+  abort ();
+
+L9:
+  return;
+
+}
+
+/* The second test of (code1 != 53) and the test (D18670 <= 2) are
+   both totally subsumed by earlier tests and thus should be folded
+   away using VRP.  */
+/* { dg-final { scan-tree-dump-times "Folding predicate" 2 "vrp1" } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */
+