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-freorder-function is broken

From: Xinliang David Li <davidxl at google dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: Jan Hubicka <jh at suse dot cz>
Date: Fri, 29 Jul 2011 10:10:22 -0700
Subject: -freorder-function is broken

The attached patch fixed the problem. The root cause of the problem is
due to the ordering change of profile_estimation and tree_profile
pass. In trunk, the function/node frequency is not computed after
profile annotation is done leading to missing information. Another
side effect of this breakage is optimize_function_for_size query is
also broken leading to larger than necessary binary with FDO.

Bootstrapped on x86_64/linux. All FDO testing passed.

Ok after regression test?

David

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