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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 | |
| 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')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfg.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr85455.c | 22 |
4 files changed, 38 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 12c2ec1..3331e6d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 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. + +2018-04-19 Richard Biener <rguenther@suse.de> + PR tree-optimization/84737 * tree-vect-data-refs.c (vect_copy_ref_info): New function copying restrict info. @@ -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 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 018c6b5..63f2be9 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2018-04-19 Richard Biener <rguenther@suse.de> + + PR middle-end/85455 + * gcc.dg/pr85455.c: New testcase. + 2018-04-19 Christophe Lyon <christophe.lyon@linaro.org> * g++.dg/lto/pr85405_0.C: Require shared and fpic effective diff --git a/gcc/testsuite/gcc.dg/pr85455.c b/gcc/testsuite/gcc.dg/pr85455.c new file mode 100644 index 0000000..2028566 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr85455.c @@ -0,0 +1,22 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fthread-jumps -fno-tree-dominator-opts -fno-tree-reassoc -fno-tree-sink -fno-tree-slsr" } */ + +void +ty (void); + +void +um (void); + +void +au (int qj) +{ + if (qj < 1) + { +vq: + ty (); + } + + um (); + + goto vq; +} |