[Bug middle-end/38125] New: [graphite] ICE :Segmentation fault

[mitul dot thakkar at amd dot com]

Using -fgraphite-identity, test case is terminating with Segmentation fault..

gcc -c -O3 -fgraphite-identity final_seg.c

final_seg.c: In function 'Perl_av_fill':
final_seg.c:23: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


gdb back trace is giving following message...

Program received signal SIGSEGV, Segmentation fault.
prepare_block_for_update (bb=0x2ae34bba1900, insert_phi_p=1 '\001') at
../../graphite/gcc/tree-into-ssa.c:2426
2426              tree sym = DECL_P (use) ? use : SSA_NAME_VAR (use);
(gdb) bt
#0  prepare_block_for_update (bb=0x2ae34bba1900, insert_phi_p=1 '\001') at
../../graphite/gcc/tree-into-ssa.c:2426
#1  0x000000000072554b in prepare_block_for_update (bb=0x2ae34bbad2a0,
insert_phi_p=1 '\001') at ../../graphite/gcc/tree-into-ssa.c:2444
#2  0x000000000072554b in prepare_block_for_update (bb=0x2ae34bba18a0,
insert_phi_p=1 '\001') at ../../graphite/gcc/tree-into-ssa.c:2444
#3  0x000000000072554b in prepare_block_for_update (bb=0x2ae34bba17e0,
insert_phi_p=128 '\200') at ../../graphite/gcc/tree-into-ssa.c:2444
#4  0x0000000000726817 in update_ssa (update_flags=2048) at
../../graphite/gcc/tree-into-ssa.c:3224
#5  0x00000000007ab930 in rewrite_into_loop_closed_ssa (changed_bbs=0x0,
update_flag=2048) at ../../graphite/gcc/tree-ssa-loop-manip.c:381
#6  0x0000000000abc162 in gloog (scop=<value optimized out>, stmt=<value
optimized out>) at ../../graphite/gcc/graphite.c:4443
#7  0x0000000000abd7d9 in graphite_transform_loops () at
../../graphite/gcc/graphite.c:5318
#8  0x00000000007b4d17 in graphite_transforms () at
../../graphite/gcc/tree-ssa-loop.c:298
#9  0x000000000063fb8b in execute_one_pass (pass=0xf24da0) at
../../graphite/gcc/passes.c:1279
#10 0x000000000063fdc5 in execute_pass_list (pass=0xf24da0) at
../../graphite/gcc/passes.c:1328
#11 0x000000000063fddd in execute_pass_list (pass=0xf24b00) at
../../graphite/gcc/passes.c:1329
#12 0x000000000063fddd in execute_pass_list (pass=0xf23fc0) at
../../graphite/gcc/passes.c:1329
#13 0x000000000073560c in tree_rest_of_compilation (fndecl=0x2ae34bb8be00) at
../../graphite/gcc/tree-optimize.c:418
#14 0x00000000008abcf4 in cgraph_expand_function (node=0x2ae34bb8bf00) at
../../graphite/gcc/cgraphunit.c:1038
#15 0x00000000008adac5 in cgraph_optimize () at
../../graphite/gcc/cgraphunit.c:1097
#16 0x0000000000417553 in c_write_global_declarations () at
../../graphite/gcc/c-decl.c:8074
#17 0x00000000006e65df in toplev_main (argc=<value optimized out>, argv=<value
optimized out>) at ../../graphite/gcc/toplev.c:979
#18 0x00002ae34b39b184 in __libc_start_main () from /lib64/libc.so.6
#19 0x0000000000405109 in _start ()

Reduced test case for the same is attached...

-Mitul Thakkar


-- 
           Summary: [graphite] ICE :Segmentation fault
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mitul dot thakkar at amd dot com
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38125