[Bug tree-optimization/14541] [tree-ssa] built-in math functions are not fully optimized at tree level

["rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>]

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14541

--- Comment #20 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 8 Dec 2014, ktkachov at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14541
> 
> ktkachov at gcc dot gnu.org changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |ktkachov at gcc dot gnu.org
> 
> --- Comment #19 from ktkachov at gcc dot gnu.org ---
> (In reply to Richard Biener from comment #18)
> > Author: rguenth
> > Date: Wed Dec  3 11:55:14 2014
> > New Revision: 218308
> > 
> > URL: https://gcc.gnu.org/viewcvs?rev=218308&root=gcc&view=rev
> > Log:
> > 2014-12-03  Richard Biener  <rguenther@suse.de>
> > 
> > 	PR middle-end/14541
> > 	* builtins.c (fold_builtin_logarithm): Implement simplifications ...
> > 	* match.pd: ... here as patterns.
> > 
> > Modified:
> >     trunk/gcc/ChangeLog
> >     trunk/gcc/builtins.c
> >     trunk/gcc/match.pd
> 
> With this commit the builtin-explog-1.c test stops folding the builtins on
> aarch64 (and consequently FAILs)

Which one exactly?  That is, what is the failing link output?
>From gcc-bugs-return-469705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 08 10:37:00 2014
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/14541] [tree-ssa] built-in math functions are not fully optimized at tree level
Date: Mon, 08 Dec 2014 10:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id\x14541

--- Comment #21 from ktkachov at gcc dot gnu.org ---
Created attachment 34215
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id4215&actioníit
Link errors output for aarch64

> Which one exactly?  That is, what is the failing link output?

All of them AFAICS. I'm attaching the link failures log.

The test PASSes at -O2 -flto and -O2 -flto -flto-partition=none

but FAILs on all other torture options