+2010-01-02 Gerald Pfeifer <gerald@pfeifer.com>
+ Alexander Monakov <amonakov@ispras.ru>
+
+ * doc/invoke.texi (Optimize Options): Reword introduction a bit.
+
2010-01-02 Richard Guenther <rguenther@suse.de>
PR middle-end/42577
Not all optimizations are controlled directly by a flag. Only
optimizations that have a flag are listed in this section.
-Most of the optimizations are not enabled if a @option{-O} level is not set on
-the command line, even if individual optimization flags are specified.
+Most optimizations are only enabled if an @option{-O} level is set on
+the command line. Otherwise they are disabled, even if individual
+optimization flags are specified.
Depending on the target and how GCC was configured, a slightly different
set of optimizations may be enabled at each @option{-O} level than