re PR middle-end/10060 (ICE (stack overflow) on huge file (300k lines) due to recursi...

re PR middle-end/10060 (ICE (stack overflow) on huge file (300k lines) due to recursive behaviour of copy_rtx_if_shared, in emit_rtl.c)

2003-12-08  Andrew Pinski  <pinskia@physics.uc.edu>

        PR middle-end/10060
        * emit-rtl.c (copy_rtx_if_shared): Split out into ...
        (copy_rtx_if_shared_1): here and optimize the last one
        in the sequence into tail-recursion.
        (reset_used_flags): Optimize the last one
        in the sequence into tail-recursion.

From-SVN: r74424