* doc/invoke.texi (-ftree-loop-distribution): Add an example.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@133076
138bc75d-0d04-0410-961f-
82ee72b054a4
+2008-03-10 Sebastian Pop <sebastian.pop@amd.com>
+
+ * doc/invoke.texi (-ftree-loop-distribution): Add an example.
+
2008-03-10 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (get_sccvn_value): Simplify.
@item -ftree-loop-distribution
Perform loop distribution. This flag can improve cache performance on
big loop bodies and allow further loop optimizations, like
-parallelization or vectorization, to take place.
+parallelization or vectorization, to take place. For example, the loop
+@smallexample
+DO I = 1, N
+ A(I) = B(I) + C
+ D(I) = E(I) * F
+ENDDO
+@end smallexample
+is transformed to
+@smallexample
+DO I = 1, N
+ A(I) = B(I) + C
+ENDDO
+DO I = 1, N
+ D(I) = E(I) * F
+ENDDO
+@end smallexample
@item -ftree-loop-im
@opindex ftree-loop-im