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, 32 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/recip-5.c b/gcc/testsuite/gcc.dg/tree-ssa/recip-5.c
new file mode 100644
index 000000000..aafa98f16
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/recip-5.c
@@ -0,0 +1,32 @@
+/* { dg-options "-O1 -funsafe-math-optimizations -ftrapping-math -fdump-tree-recip -fdump-tree-optimized" } */
+/* { dg-do compile } */
+/* { dg-warning "-fassociative-math disabled" "" { target *-*-* } 1 } */
+
+/* Test the reciprocal optimizations together with trapping math.  */
+
+extern int f2();
+
+double f1(double y, double z, double w, double j, double k)
+{
+  double b, c, d, e, f, g;
+
+  if (f2 ())
+    /* inserts one division here */
+    b = 1 / y, c = z / y, d = j / y;
+  else
+    /* one division here */
+    b = 3 / y, c = w / y, d = k / y;
+
+  /* and one here, that should be removed afterwards but is not right now */
+  e = b / y;
+  f = c / y;
+  g = d / y;
+
+  return e + f + g;
+}
+
+/* { dg-final { scan-tree-dump-times " / " 3 "recip" } } */
+/* { dg-final { scan-tree-dump-times " / " 2 "optimized" { xfail *-*-* } } } */
+/* { dg-final { cleanup-tree-dump "recip" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+