-O1 single optimization parameter

[Brian Dessent]

massimiliano cialdi wrote:

> I think that -O1 is an alias for a list of optimization parametr as
> reported in gcc manual, so if I want to anable only one parameter at

Your interpretation of the manual is incorrect.  Note in particular the
passage that says "Not all optimizations are controlled directly by a
flag. Only optimizations that have a flag are listed."  This is telling
you that -O is not equivalent to a set of -f options.

Brian