This fixes LTO bootstrap which, after the IRA changes to properly
use loop_optimizer_init () and friends, now detects that we may
in fact have invalidated dominator information (and formerly
used this invalid dominator information to build up loops
via flow_loops_find - oops).
LTO bootstrap in stage2, I'll commit it after some more cycles
as obvious.
Richard.
2013-02-08 Richard Biener <rguent...@suse.de>
* ira.c (ira): Free broken dominator information.
Index: gcc/ira.c
===================================================================
*** gcc/ira.c (revision 195878)
--- gcc/ira.c (working copy)
*************** ira (FILE *f)
*** 4520,4525 ****
--- 4520,4526 ----
change if new insns were generated? Can that be handled
by updating the loop tree incrementally? */
loop_optimizer_finalize ();
+ free_dominance_info (CDI_DOMINATORS);
loop_optimizer_init (AVOID_CFG_MODIFICATIONS
| LOOPS_HAVE_RECORDED_EXITS);
