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* [Bug tree-optimization/48443] New: ICE: verify_flow_info failed: control flow in the middle of basic block with -fprefetch-loop-arrays --param l2-cache-size=0 and setjmp()
@ 2011-04-05  0:15 zsojka at seznam dot cz
  2012-12-31 12:42 ` [Bug tree-optimization/48443] " antoine.balestrat at gmail dot com
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: zsojka at seznam dot cz @ 2011-04-05  0:15 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48443

           Summary: ICE: verify_flow_info failed: control flow in the
                    middle of basic block with -fprefetch-loop-arrays
                    --param l2-cache-size=0 and setjmp()
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 23875
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23875
reduced testcase

Compiler output:
$ gcc -O -fprefetch-loop-arrays -fstrict-overflow -ftree-vectorize --param
l2-cache-size=0 testcase.c
testcase.c: In function 'foo':
testcase.c:3:6: error: control flow in the middle of basic block 10
testcase.c:3:6: error: control flow in the middle of basic block 10
testcase.c:3:6: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

(gdb) bt
#0  error (gmsgid=0x1178ef8 "control flow in the middle of basic block %d") at
/mnt/svn/gcc-trunk/gcc/diagnostic.c:747
#1  0x00000000008e98d3 in gimple_verify_flow_info () at
/mnt/svn/gcc-trunk/gcc/tree-cfg.c:4464
#2  0x00000000005e6374 in verify_flow_info () at
/mnt/svn/gcc-trunk/gcc/cfghooks.c:257
#3  0x00000000009aee9a in tree_transform_and_unroll_loop (loop=0x7ffff7ed0a18,
factor=4, exit=0x7ffff59983c0, desc=Unhandled dwarf expression opcode 0xf3
)
    at /mnt/svn/gcc-trunk/gcc/tree-ssa-loop-manip.c:1098
#4  0x000000000105d709 in loop_prefetch_arrays () at
/mnt/svn/gcc-trunk/gcc/tree-ssa-loop-prefetch.c:1862
#5  tree_ssa_prefetch_arrays () at
/mnt/svn/gcc-trunk/gcc/tree-ssa-loop-prefetch.c:1933
#6  0x00000000007efd46 in execute_one_pass (pass=0x164b520) at
/mnt/svn/gcc-trunk/gcc/passes.c:1555
#7  0x00000000007f0035 in execute_pass_list (pass=0x164b520) at
/mnt/svn/gcc-trunk/gcc/passes.c:1610
#8  0x00000000007f0047 in execute_pass_list (pass=0x164bac0) at
/mnt/svn/gcc-trunk/gcc/passes.c:1611
#9  0x00000000007f0047 in execute_pass_list (pass=0x164ad40) at
/mnt/svn/gcc-trunk/gcc/passes.c:1611
#10 0x0000000000934d15 in tree_rest_of_compilation (fndecl=0x7ffff5977f00) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:422
#11 0x0000000000b01337 in cgraph_expand_function (node=0x7ffff5997000) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1580
#12 0x0000000000b03a8c in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1639
#13 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:1903
#14 0x0000000000b0401a in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1100
#15 0x0000000000509094 in c_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/c-decl.c:9879
#16 0x00000000008dd94d in compile_file (argc=18, argv=0x7fffffffdbf8) at
/mnt/svn/gcc-trunk/gcc/toplev.c:591

Tested revisions:
r171948 - crash
4.6 r171597 - crash
4.5 r171597 - OK
4.4 r171597 - crash


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-- links below jump to the message on this page --
2011-04-05  0:15 [Bug tree-optimization/48443] New: ICE: verify_flow_info failed: control flow in the middle of basic block with -fprefetch-loop-arrays --param l2-cache-size=0 and setjmp() zsojka at seznam dot cz
2012-12-31 12:42 ` [Bug tree-optimization/48443] " antoine.balestrat at gmail dot com
2012-12-31 13:01 ` zsojka at seznam dot cz
2012-12-31 13:51 ` antoine.balestrat at gmail dot com
2013-04-08  7:53 ` mpolacek at gcc dot gnu.org
2014-12-09 15:30 ` mpolacek at gcc dot gnu.org

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