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, 24 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c
new file mode 100644
index 000000000..193199fbf
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp08.c
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-tree-fre -fdump-tree-vrp1-details" } */
+
+/* Compile with -fno-tree-fre -O2 to prevent CSEing *p.  */
+foo (int a, int *p)
+{
+  int x = *p + 2;
+  int y = *p - 1;
+  int z = *p + 9;
+
+  /* This should be folded to if (1), but only one ASSERT_EXPR should
+     be inserted.  */
+  if (p)
+    a = x + y + z;
+  else
+    a = x - y;
+
+  return a;
+}
+/* Target with fno-delete-null-pointer-checks should not fold checks */
+/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
+/* { dg-final { scan-tree-dump-times "PREDICATE: p_.* ne_expr 0" 1 "vrp1" { target { ! keeps_null_pointer_checks } } } } */
+/* { dg-final { scan-tree-dump-times "Folding predicate p_.*to 1" 0 "vrp1" { target {   keeps_null_pointer_checks } } } } */
+/* { dg-final { cleanup-tree-dump "vrp1" } } */