public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug middle-end/59285] New: gcc.dg/builtin-unreachable-6.c:17:1: internal compiler error: in rtl_verify_fallthru, at cfgrtl.c:2862
@ 2013-11-25 11:44 ktkachov at gcc dot gnu.org
  2013-11-25 15:29 ` [Bug middle-end/59285] [4.9 Regression] " rguenth at gcc dot gnu.org
                   ` (13 more replies)
  0 siblings, 14 replies; 15+ messages in thread
From: ktkachov at gcc dot gnu.org @ 2013-11-25 11:44 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59285

            Bug ID: 59285
           Summary: gcc.dg/builtin-unreachable-6.c:17:1: internal compiler
                    error: in rtl_verify_fallthru, at cfgrtl.c:2862
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org

The gcc.dg/builtin-unreachable-6.c testcase fails on arm-none-eabi with:

$SRC/gcc/gcc/testsuite/gcc.dg/builtin-unreachable-6.c: In function 'foo':
$SRC/gcc/gcc/testsuite/gcc.dg/builtin-unreachable-6.c:17:1: error:
verify_flow_info: Incorrect fallthru 2->5
$SRC/gcc/gcc/testsuite/gcc.dg/builtin-unreachable-6.c:17:1: error: wrong insn
in the fallthru edge
(barrier 21 20 27)
$SRC/gcc/gcc/testsuite/gcc.dg/builtin-unreachable-6.c:17:1: internal compiler
error: in rtl_verify_fallthru, at cfgrtl.c:2862
0x95d645 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        $SRC/gcc/gcc/rtl-error.c:109
0x69254a rtl_verify_fallthru
        $SRC/gcc/gcc/cfgrtl.c:2862
0x69254a rtl_verify_flow_info
        $SRC/gcc/gcc/cfgrtl.c:2962
0x681af7 verify_flow_info()
        $SRC/gcc/gcc/cfghooks.c:258
0xe5c24f if_convert
        $SRC/gcc/gcc/ifcvt.c:4460
0xe5d95d rest_of_handle_if_after_reload
        $SRC/gcc/gcc/ifcvt.c:4594
0xe5d95d execute
        $SRC/gcc/gcc/ifcvt.c:4625
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Bisection shows it started with r205074:

        * tree-ssa-threadedge.c (thread_across_edge): After threading
        through a joiner, allow threading a normal block requiring
        duplication.

        * tree-ssa-threadupdate.c (thread_block_1): Improve code to detect
        jump threading requests that would muck up the loop structures.


^ permalink raw reply	[flat|nested] 15+ messages in thread
end of thread, other threads:[~2014-01-08  5:57 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-11-25 11:44 [Bug middle-end/59285] New: gcc.dg/builtin-unreachable-6.c:17:1: internal compiler error: in rtl_verify_fallthru, at cfgrtl.c:2862 ktkachov at gcc dot gnu.org
2013-11-25 15:29 ` [Bug middle-end/59285] [4.9 Regression] " rguenth at gcc dot gnu.org
2013-11-25 16:20 ` law at redhat dot com
2013-11-25 20:13 ` law at redhat dot com
2013-11-26 18:51 ` law at redhat dot com
2013-12-05 17:17 ` law at redhat dot com
2013-12-05 17:21 ` ktkachov at gcc dot gnu.org
2013-12-05 17:27 ` law at redhat dot com
2013-12-05 17:33 ` ktkachov at gcc dot gnu.org
2013-12-19 14:17 ` yufeng at gcc dot gnu.org
2013-12-19 15:35 ` rguenth at gcc dot gnu.org
2013-12-19 15:54 ` law at redhat dot com
2013-12-24 20:22 ` steven at gcc dot gnu.org
2014-01-08  5:56 ` law at gcc dot gnu.org
2014-01-08  5:57 ` law at redhat dot com

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).