[Bug fortran/69368] [6 Regression] spec2006 test case 416.gamess fails with the g++ 6.0 compiler starting with r232508

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69368

--- Comment #93 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 20 May 2016, mike at vermeulen dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69368
> 
> Mike Vermeulen <mike at vermeulen dot com> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |mike at vermeulen dot com
> 
> --- Comment #91 from Mike Vermeulen <mike at vermeulen dot com> ---
> This problem appears to have reappeared in GCC 7 trunk.
> 
> Looking at the performance results posted at:
> http://gcc.opensuse.org/SPEC/CFP/sb-megrez-head-64-2006/recent.html suggests
> the problem reappeared somewhere around May 4th.
> 
> 416.gamess also fails with latest gcc-7-20160515 snapshot despite adding the
> -funconstrained-commons flag.

I don't think it is the same problem as the tester you cite above has
the problem fixed in 416.gamess sources.

It looks like we're big into "stage1" with the last run showing

Error: 2x416.gamess 2x435.gromacs 2x436.cactusADM 1x437.leslie3d 
1x447.dealII 2x454.calculix 2x465.tonto 2x481.wrf

Note that gamess is a build error:

dftexc.fppized.f:137:0: internal compiler error: in zero_one_operation, at 
tree-ssa-reassoc.c:1230
       SUBROUTINE CALCEXC(ROA,ROB,FTOTWT,GRDAA,GRDBB,GRDAB,

zheev.fppized.f: In function 'zher2k.constprop':
zheev.fppized.f:7273:0: internal compiler error: in zero_one_operation, at 
tree-ssa-reassoc.c:1230
       SUBROUTINE ZHER2K( UPLO, TRANS, N, K, ALPHA, A, LDA, B, LDB,

0xaa3596 zero_one_operation
        /gcc/spec/sb-czerny-head-64-2006/gcc/gcc/tree-ssa-reassoc.c:1229
0xaab013 undistribute_ops_list