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Subject: [Bug middle-end/55263] New: [4.8 Regression] ICE: pre_and_rev_post_order_compute, at cfganal.c:875 with -O -fgcse-after-reload -fnon-call-exceptions
Date: Sat, 10 Nov 2012 09:38:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55263

             Bug #: 55263
           Summary: [4.8 Regression] ICE: pre_and_rev_post_order_compute,
                    at cfganal.c:875 with -O -fgcse-after-reload
                    -fnon-call-exceptions
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 28654
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28654
autoreduced testcase

The ICE at the same place as PR54385, but that one is FIXED now.

Compiler output:
$ gcc -O -fgcse-after-reload -fnon-call-exceptions testcase.C         
testcase.C: In function 'void foo()':
testcase.C:65:1: internal compiler error: in pre_and_rev_post_order_compute, at
cfganal.c:875
 }
 ^
0x827274 pre_and_rev_post_order_compute(int*, int*, bool)
        /mnt/svn/gcc-trunk/gcc/cfganal.c:875
0x7e19b9 init_alias_analysis()
        /mnt/svn/gcc-trunk/gcc/alias.c:2852
0xaddc9a gcse_after_reload_main
        /mnt/svn/gcc-trunk/gcc/postreload-gcse.c:1274
0xaddc9a rest_of_handle_gcse2
        /mnt/svn/gcc-trunk/gcc/postreload-gcse.c:1321
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.

Tested revisions:
r193368 - crash
4.7 r191640 - OK