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| author | Richard Biener <rguenther@suse.de> | 2018-04-19 13:53:06 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-04-19 13:53:06 +0000 |
| commit | ca98e4c5d0e87b5305ab30591509ffc64300abd4 (patch) | |
| tree | 543ad182909d71130092764c0c89346216eb9e68 /gcc/cfg.c | |
| parent | 19986382015e2aa8dc539bf31065af4bdff5ce84 (diff) | |
| download | gcc-ca98e4c5d0e87b5305ab30591509ffc64300abd4.zip gcc-ca98e4c5d0e87b5305ab30591509ffc64300abd4.tar.gz gcc-ca98e4c5d0e87b5305ab30591509ffc64300abd4.tar.bz2 | |
re PR rtl-optimization/85455 (ICE in verify_loop_structure, at cfgloop.c:1708 (error: basic block 3 should be marked irreducible))
2018-04-19 Richard Biener <rguenther@suse.de>
PR middle-end/85455
* cfg.c (clear_bb_flags): When loop state says we have
marked irreducible regions also preserve BB_IRREDUCIBLE_LOOP.
* gcc.dg/pr85455.c: New testcase.
From-SVN: r259494
Diffstat (limited to 'gcc/cfg.c')
| -rw-r--r-- | gcc/cfg.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -386,9 +386,13 @@ void clear_bb_flags (void) { basic_block bb; + int flags_to_preserve = BB_FLAGS_TO_PRESERVE; + if (current_loops + && loops_state_satisfies_p (cfun, LOOPS_HAVE_MARKED_IRREDUCIBLE_REGIONS)) + flags_to_preserve |= BB_IRREDUCIBLE_LOOP; FOR_ALL_BB_FN (bb, cfun) - bb->flags &= BB_FLAGS_TO_PRESERVE; + bb->flags &= flags_to_preserve; } /* Check the consistency of profile information. We can't do that |