re PR rtl-optimization/28011 ([SH] g++ generates wrong code, if '-fno-exceptions' and '-O' options are specified)
PR rtl-optimization/28011
* reload.c (push_reload): Set dont_share if IN appears in OUT
also when IN is a PLUS rtx.
(reg_overlap_mentioned_for_reload_p): Return true if X and IN
are same PLUS rtx.
From-SVN: r124557
