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* [Bug tree-optimization/37031]  New: ICE for h264ref in gather_interchange_stats with -ftree-loop-linear
@ 2008-08-05 17:39 janis at gcc dot gnu dot org
  2008-08-05 17:43 ` [Bug tree-optimization/37031] " janis at gcc dot gnu dot org
                   ` (13 more replies)
  0 siblings, 14 replies; 15+ messages in thread
From: janis at gcc dot gnu dot org @ 2008-08-05 17:39 UTC (permalink / raw)
  To: gcc-bugs

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Current mainline fails to compile h264ref from SPEC CPU2006 with some sets of
options.  It's somewhat intermittent but complaints from valgrind appear to be
consistent.  Here's the failure for -O3 -ftree-loop-linear using cc1 from
within a script; using the same command directly didn't result in the failure:

bug.c: In function ‘foo’:
bug.c:13: internal compiler error: vector VEC(lambda_vector,base) index domain
error, in gather_interchange_stats at tree-loop-linear.c:150
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

valgrind reports:

==13989== Invalid read of size 4
==13989==    at 0x106DBC34: gather_interchange_stats (lambda.h:31)
==13989==    by 0x106DC5B8: linear_transform_loops (tree-loop-linear.c:211)
==13989==    by 0x10432CC8: tree_linear_transform (tree-ssa-loop.c:259)
==13989==    by 0x1029D19C: execute_one_pass (passes.c:1282)
==13989==    by 0x1029D480: execute_pass_list (passes.c:1330)
==13989==    by 0x1029D498: execute_pass_list (passes.c:1331)
==13989==    by 0x1029D498: execute_pass_list (passes.c:1331)
==13989==    by 0x103999D0: tree_rest_of_compilation (tree-optimize.c:418)
==13989==    by 0x10547DBC: cgraph_expand_function (cgraphunit.c:1038)
==13989==    by 0x1054A2D0: cgraph_optimize (cgraphunit.c:1100)
==13989==    by 0x10017584: c_write_global_declarations (c-decl.c:8038)
==13989==    by 0x10338A2C: toplev_main (toplev.c:967)
==13989==  Address 0x76A1BD8 is 0 bytes inside a block of size 20 free'd
==13989==    at 0xFFBAE98: realloc (in
/usr/lib/valgrind/ppc32-linux/vgpreload_memcheck.so)
==13989==    by 0x10720DD8: xrealloc (xmalloc.c:179)
==13989==    by 0x105152DC: vec_heap_o_reserve_1 (vec.c:176)
==13989==    by 0x1069FC98: lambda_compute_access_matrices (lambda.h:32)
==13989==    by 0x106DC458: linear_transform_loops (tree-loop-linear.c:353)
==13989==    by 0x10432CC8: tree_linear_transform (tree-ssa-loop.c:259)
==13989==    by 0x1029D19C: execute_one_pass (passes.c:1282)
==13989==    by 0x1029D480: execute_pass_list (passes.c:1330)
==13989==    by 0x1029D498: execute_pass_list (passes.c:1331)
==13989==    by 0x1029D498: execute_pass_list (passes.c:1331)
==13989==    by 0x103999D0: tree_rest_of_compilation (tree-optimize.c:418)
==13989==    by 0x10547DBC: cgraph_expand_function (cgraphunit.c:1038)

I'll attach the testcase, the valgrind output, and the script I used with delta
to initially cut down the testcase.  I've seen the failure with GCC back to
20080429 but haven't yet tried a reghunt.


-- 
           Summary: ICE for h264ref in gather_interchange_stats with -ftree-
                    loop-linear
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37031


^ permalink raw reply	[flat|nested] 15+ messages in thread
end of thread, other threads:[~2009-01-08 16:03 UTC | newest]

Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-08-05 17:39 [Bug tree-optimization/37031] New: ICE for h264ref in gather_interchange_stats with -ftree-loop-linear janis at gcc dot gnu dot org
2008-08-05 17:43 ` [Bug tree-optimization/37031] " janis at gcc dot gnu dot org
2008-08-05 17:45 ` janis at gcc dot gnu dot org
2008-08-05 17:46 ` janis at gcc dot gnu dot org
2008-08-05 21:25 ` janis at gcc dot gnu dot org
2008-08-10 20:22 ` [Bug tree-optimization/37031] [4.4 Regression] " pinskia at gcc dot gnu dot org
2008-08-22 15:24 ` rguenth at gcc dot gnu dot org
2008-09-15 13:35 ` jakub at gcc dot gnu dot org
2008-09-16 17:23 ` janis at gcc dot gnu dot org
2009-01-08 11:04 ` jakub at gcc dot gnu dot org
2009-01-08 13:39 ` jakub at gcc dot gnu dot org
2009-01-08 13:52 ` jakub at gcc dot gnu dot org
2009-01-08 14:18 ` spop at gcc dot gnu dot org
2009-01-08 16:02 ` jakub at gcc dot gnu dot org
2009-01-08 16:03 ` jakub at gcc dot gnu dot org

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