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-fopt-info handling

From: Ulrich Drepper <drepper at gmail dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Mon, 27 Jun 2016 13:31:09 -0400
Subject: -fopt-info handling
Authentication-results: sourceware.org; auth=none

The manual says about -fop-info:

       If OPTIONS is omitted, it defaults to 'all-all', which means
dump all available optimization info from all the passes.

The current implementation (at at least recent gcc 6.1) don't follow
that, though.  They just ignore the option in that case.

How about the attached patch?  It is simple and doesn't duplicate the
information what "all-all" means and instead let's the option parser
do the hard work.

Attachment: d-gcc-opt-info
Description: Binary data

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