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* [Bug c++/40323]  New: compiling just takes forever and doesn't really process
@ 2009-06-01 18:31 ich at az2000 dot de
  2009-06-01 18:32 ` [Bug c++/40323] " ich at az2000 dot de
                   ` (10 more replies)
  0 siblings, 11 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-01 18:31 UTC (permalink / raw)
  To: gcc-bugs

This is with GCC trunk, rev 148041:

I have a cpp file where g++ just takes forever with 100% CPU usage and constant
(low) memory usage. I am waiting now for 20 minutes without any visible
progress.

I attached with GDB to the process and this is some of the details I am seeing:

az@gcomputer:~$ gdb
/opt/gcc4.4-trunk/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/cc1plus 32654
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...
Really redefine built-in command "frame"? (y or n) [answered Y; input not from
terminal]
Really redefine built-in command "thread"? (y or n) [answered Y; input not from
terminal]
Really redefine built-in command "start"? (y or n) [answered Y; input not from
terminal]
Attaching to program:
/opt/gcc4.4-trunk/libexec/gcc/x86_64-unknown-linux-gnu/4.5.0/cc1plus, process
32654
Reading symbols from /usr/lib/libmpfr.so.1...done.
Loaded symbols for /usr/lib/libmpfr.so.1
Reading symbols from /usr/lib/libgmp.so.3...done.
Loaded symbols for /usr/lib/libgmp.so.3
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
_______________________________________________________________________________
Error while running hook_stop:
Value can't be converted to integer.
0x0000000000a6ebd4 in ipa_compute_jump_functions (cs=<value optimized out>) at
../../gcc/ipa-prop.c:437
437       while (TREE_CODE (rhs) == SSA_NAME && !SSA_NAME_IS_DEFAULT_DEF (rhs))
gdb> bt ful
#0  0x0000000000a6ebd4 in ipa_compute_jump_functions (cs=<value optimized out>)
at ../../gcc/ipa-prop.c:437
        info = <value optimized out>
        __FUNCTION__ = "ipa_compute_jump_functions"
        call = <value optimized out>
#1  0x0000000000000002 in ?? ()
No symbol table info available.
#2  0x00007f11dcc99480 in ?? ()
No symbol table info available.
#3  0x0000000002394010 in ?? ()
No symbol table info available.
#4  0x0000000000000002 in ?? ()
No symbol table info available.
#5  0x00007f11df850360 in ?? ()
No symbol table info available.
#6  0x00007f11dd0b6c80 in ?? ()
No symbol table info available.
#7  0x00007f11dd0b6d20 in ?? ()
No symbol table info available.
#8  0x0000000002394040 in ?? ()
No symbol table info available.
#9  0x00007f11dc83b160 in ?? ()
No symbol table info available.
#10 0x00007f11ddb0f400 in ?? ()
No symbol table info available.
#11 0x00007f11dc8865a0 in ?? ()
No symbol table info available.
#12 0x000000000000003b in ?? ()
No symbol table info available.
#13 0x00007f11dd0b6d20 in ?? ()
No symbol table info available.
#14 0x00007f11dd0b6c80 in ?? ()
No symbol table info available.
#15 0x0000000000a6d0d0 in ?? ()
No locals.
#16 0x00007f11dc898600 in ?? ()
No symbol table info available.
#17 0x00007f11dc833600 in ?? ()
No symbol table info available.
#18 0x0000000000000000 in ?? ()
No symbol table info available.
gdb> c


^C
Program received signal SIGINT, Interrupt.
_______________________________________________________________________________
Error while running hook_stop:
Value can't be converted to integer.
gimple_assign_single_p (gs=0x7f11dc839be0) at ../../gcc/gimple.c:1831
1831    }
gdb> bt 
#0  gimple_assign_single_p (gs=0x7f11dc839be0) at ../../gcc/gimple.c:1831
#1  0x0000000000a6ebee in ipa_compute_jump_functions (cs=<value optimized out>)
at ../../gcc/ipa-prop.c:441
#2  0x0000000000000002 in ?? ()
#3  0x00007f11dcc99480 in ?? ()
#4  0x0000000002394010 in ?? ()
#5  0x0000000000000002 in ?? ()
#6  0x00007f11df850360 in ?? ()
#7  0x00007f11dd0b6c80 in ?? ()
#8  0x00007f11dd0b6d20 in ?? ()
#9  0x0000000002394040 in ?? ()
#10 0x00007f11dc83b160 in ?? ()
#11 0x00007f11ddb0f400 in ?? ()
#12 0x00007f11dc8865a0 in ?? ()
#13 0x000000000000003b in ?? ()
#14 0x00007f11dd0b6d20 in ?? ()
#15 0x00007f11dd0b6c80 in ?? ()
#16 0x0000000000a6d0d0 in ?? ()
#17 0x00007f11dc898600 in ?? ()
#18 0x00007f11dc833600 in ?? ()
#19 0x0000000000000000 in ?? ()
gdb> c
^C
Program received signal SIGINT, Interrupt.
_______________________________________________________________________________
Error while running hook_stop:
Value can't be converted to integer.
0x0000000000a6ebdf in ipa_compute_jump_functions (cs=<value optimized out>) at
../../gcc/ipa-prop.c:437
437       while (TREE_CODE (rhs) == SSA_NAME && !SSA_NAME_IS_DEFAULT_DEF (rhs))
gdb> list
432        return the rhs of its defining statement.  */
433     
434     static inline tree
435     get_ssa_def_if_simple_copy (tree rhs)
436     {
437       while (TREE_CODE (rhs) == SSA_NAME && !SSA_NAME_IS_DEFAULT_DEF (rhs))
438         {
439           gimple def_stmt = SSA_NAME_DEF_STMT (rhs);
440     
441           if (gimple_assign_single_p (def_stmt))
gdb> bt
#0  0x0000000000a6ebdf in ipa_compute_jump_functions (cs=<value optimized out>)
at ../../gcc/ipa-prop.c:437
#1  0x0000000000000002 in ?? ()
#2  0x00007f11dcc99480 in ?? ()
#3  0x0000000002394010 in ?? ()
#4  0x0000000000000002 in ?? ()
#5  0x00007f11df850360 in ?? ()
#6  0x00007f11dd0b6c80 in ?? ()
#7  0x00007f11dd0b6d20 in ?? ()
#8  0x0000000002394040 in ?? ()
#9  0x00007f11dc83b160 in ?? ()
#10 0x00007f11ddb0f400 in ?? ()
#11 0x00007f11dc8865a0 in ?? ()
#12 0x000000000000003b in ?? ()
#13 0x00007f11dd0b6d20 in ?? ()
#14 0x00007f11dd0b6c80 in ?? ()
#15 0x0000000000a6d0d0 in ?? ()
#16 0x00007f11dc898600 in ?? ()
#17 0x00007f11dc833600 in ?? ()
#18 0x0000000000000000 in ?? ()
gdb> c
^C
Program received signal SIGINT, Interrupt.
_______________________________________________________________________________
Error while running hook_stop:
Value can't be converted to integer.
gimple_assign_single_p (gs=0x7f11dc839be0) at ../../gcc/gimple.c:1827
1827    {
gdb> list
1822       any RHS operand, including those that perform an operation
1823       and do not have the semantics of a copy, such as COND_EXPR.  */
1824    
1825    bool
1826    gimple_assign_single_p (gimple gs)
1827    {
1828      return (gimple_code (gs) == GIMPLE_ASSIGN
1829              && get_gimple_rhs_class (gimple_assign_rhs_code (gs))
1830                 == GIMPLE_SINGLE_RHS);
1831    }
gdb> print gs
$1 = (gimple) 0x7f11dc839be0
gdb> print *gs
$2 = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, gsops = {opbase = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops = 0x0}, op = {0x0}}, gsmem =
{membase = {opbase = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited
= 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops =
0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2,
bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops
= 0x0}, vdef = 0x0, vuse = 0x0}, op = {0x7f11db7dccc0}}, omp = {gsbase = {code
= GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, gimple_bind = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, vars = 0x7f11db7df1d0, block = 0x0, body = 0x0}, gimple_catch
= {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, types = 0x7f11db7df1d0, handler =
0x0}, gimple_eh_filter = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, types =
0x7f11db7df1d0, failure = 0x0}, gimple_phi = {gsbase = {code = GIMPLE_ASSIGN,
no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified =
0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, capacity
= 0xdb7df1d0, nargs = 0x7f11, result = 0x0, args = {{imm_use = {prev = 0x0,
next = 0x0, loc = {stmt = 0x7f11db7dccc0, ssa_name = 0x7f11db7dccc0}, use =
0x7f11dcb59a80}, def = 0x202205}}}, gimple_resx = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, region = 0xdb7df1d0}, gimple_try = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, eval = 0x7f11db7df1d0, cleanup = 0x0}, gimple_wce = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, cleanup = 0x7f11db7df1d0}, gimple_asm = {membase = {opbase =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops =
0x0}, vdef = 0x0, vuse = 0x0}, string = 0x7f11db7dccc0 "\216", ni = 0x80, no =
0x9a, nc = 0xdcb5, op = {0x202205}}, gimple_omp_critical = {omp = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, name = 0x0}, gimple_omp_for = {omp =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0,
collapse = 0x0, iter = 0x0, pre_body = 0x7f11db7dccc0}, gimple_omp_parallel =
{omp = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0,
child_fn = 0x0, data_arg = 0x0}, gimple_omp_task = {par = {omp = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0, child_fn = 0x0,
data_arg = 0x0}, copy_fn = 0x7f11db7dccc0, arg_size = 0x7f11dcb59a80, arg_align
= 0x202205}, gimple_omp_sections = {omp = {gsbase = {code = GIMPLE_ASSIGN,
no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified =
0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, body =
0x7f11db7df1d0}, clauses = 0x0, control = 0x0}, gimple_omp_single = {omp =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses =
0x0}, gimple_omp_continue = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120},
control_def = 0x7f11db7df1d0, control_use = 0x0}, gimple_omp_atomic_load =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, rhs = 0x7f11db7df1d0, lhs = 0x0},
gimple_omp_atomic_store = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, val =
0x7f11db7df1d0}}
gdb>


-- 
           Summary: compiling just takes forever and doesn't really process
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ich at az2000 dot de
  GCC host triplet: amd64
GCC target triplet: amd64


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug c++/40323] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
@ 2009-06-01 18:32 ` ich at az2000 dot de
  2009-06-01 18:35 ` ich at az2000 dot de
                   ` (9 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-01 18:32 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #1 from ich at az2000 dot de  2009-06-01 18:32 -------
gdb> c
q
^C
Program received signal SIGINT, Interrupt.
_______________________________________________________________________________
Error while running hook_stop:
Value can't be converted to integer.
0x0000000000780a0f in gimple_assign_single_p (gs=0x7f11dc839be0) at
../../gcc/gimple.c:1831
1831    }
gdb> list
1826    gimple_assign_single_p (gimple gs)
1827    {
1828      return (gimple_code (gs) == GIMPLE_ASSIGN
1829              && get_gimple_rhs_class (gimple_assign_rhs_code (gs))
1830                 == GIMPLE_SINGLE_RHS);
1831    }
1832    
1833    /* Return true if GS is an assignment with a unary RHS, but the
1834       operator has no effect on the assigned value.  The logic is adapted
1835       from STRIP_NOPS.  This predicate is intended to be used in
tuplifying
gdb> print gs
$4 = (gimple) 0x7f11dc839be0
gdb> print *gs
$5 = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, gsops = {opbase = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops = 0x0}, op = {0x0}}, gsmem =
{membase = {opbase = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited
= 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops =
0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2,
bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops
= 0x0}, vdef = 0x0, vuse = 0x0}, op = {0x7f11db7dccc0}}, omp = {gsbase = {code
= GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, gimple_bind = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, vars = 0x7f11db7df1d0, block = 0x0, body = 0x0}, gimple_catch
= {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, types = 0x7f11db7df1d0, handler =
0x0}, gimple_eh_filter = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, types =
0x7f11db7df1d0, failure = 0x0}, gimple_phi = {gsbase = {code = GIMPLE_ASSIGN,
no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified =
0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, capacity
= 0xdb7df1d0, nargs = 0x7f11, result = 0x0, args = {{imm_use = {prev = 0x0,
next = 0x0, loc = {stmt = 0x7f11db7dccc0, ssa_name = 0x7f11db7dccc0}, use =
0x7f11dcb59a80}, def = 0x202205}}}, gimple_resx = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, region = 0xdb7df1d0}, gimple_try = {gsbase = {code =
GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf =
0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid =
0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, eval = 0x7f11db7df1d0, cleanup = 0x0}, gimple_wce = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, cleanup = 0x7f11db7df1d0}, gimple_asm = {membase = {opbase =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, def_ops = 0x7f11db7df1d0, use_ops =
0x0}, vdef = 0x0, vuse = 0x0}, string = 0x7f11db7dccc0 "\216", ni = 0x80, no =
0x9a, nc = 0xdcb5, op = {0x202205}}, gimple_omp_critical = {omp = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, name = 0x0}, gimple_omp_for = {omp =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0,
collapse = 0x0, iter = 0x0, pre_body = 0x7f11db7dccc0}, gimple_omp_parallel =
{omp = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0,
child_fn = 0x0, data_arg = 0x0}, gimple_omp_task = {par = {omp = {gsbase =
{code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0,
plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74,
uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block =
0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses = 0x0, child_fn = 0x0,
data_arg = 0x0}, copy_fn = 0x7f11db7dccc0, arg_size = 0x7f11dcb59a80, arg_align
= 0x202205}, gimple_omp_sections = {omp = {gsbase = {code = GIMPLE_ASSIGN,
no_warning = 0x0, visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified =
0x0, has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, body =
0x7f11db7df1d0}, clauses = 0x0, control = 0x0}, gimple_omp_single = {omp =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, body = 0x7f11db7df1d0}, clauses =
0x0}, gimple_omp_continue = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120},
control_def = 0x7f11db7df1d0, control_use = 0x0}, gimple_omp_atomic_load =
{gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0, visited = 0x0,
nontemporal_move = 0x0, plf = 0x0, modified = 0x0, has_volatile_ops = 0x0, pad
= 0x0, subcode = 0x74, uid = 0x0, location = 0x6480dd, num_ops = 0x2, bb =
0x7f11dc8865a0, block = 0x7f11dc83a120}, rhs = 0x7f11db7df1d0, lhs = 0x0},
gimple_omp_atomic_store = {gsbase = {code = GIMPLE_ASSIGN, no_warning = 0x0,
visited = 0x0, nontemporal_move = 0x0, plf = 0x0, modified = 0x0,
has_volatile_ops = 0x0, pad = 0x0, subcode = 0x74, uid = 0x0, location =
0x6480dd, num_ops = 0x2, bb = 0x7f11dc8865a0, block = 0x7f11dc83a120}, val =
0x7f11db7df1d0}}
gdb> q
az@gcomputer:~$ 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug c++/40323] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
  2009-06-01 18:32 ` [Bug c++/40323] " ich at az2000 dot de
@ 2009-06-01 18:35 ` ich at az2000 dot de
  2009-06-01 18:36 ` ich at az2000 dot de
                   ` (8 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-01 18:35 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #2 from ich at az2000 dot de  2009-06-01 18:35 -------
This only happens with -O3. Without specific optimisation, it compiles just
fine. With all other GCC versions I have tried so far (GCC 4.4, GCC 4.3, GCC
4.0 and a lot others) it works fine (with any possible optimisation).


-- 

ich at az2000 dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|tree-optimization           |c++


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug c++/40323] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
  2009-06-01 18:32 ` [Bug c++/40323] " ich at az2000 dot de
  2009-06-01 18:35 ` ich at az2000 dot de
@ 2009-06-01 18:36 ` ich at az2000 dot de
  2009-06-01 21:36 ` [Bug tree-optimization/40323] " ich at az2000 dot de
                   ` (7 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-01 18:36 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #3 from ich at az2000 dot de  2009-06-01 18:36 -------
Created an attachment (id=17943)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17943&action=view)
source file after preprocessor

This is the specific source after the preprocessor.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (2 preceding siblings ...)
  2009-06-01 18:36 ` ich at az2000 dot de
@ 2009-06-01 21:36 ` ich at az2000 dot de
  2009-06-02 10:14 ` [Bug tree-optimization/40323] [4.5 Regression] " rguenth at gcc dot gnu dot org
                   ` (6 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-01 21:36 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #4 from ich at az2000 dot de  2009-06-01 21:36 -------
It runs now for >200 minutes, so I really think this is not normal.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (3 preceding siblings ...)
  2009-06-01 21:36 ` [Bug tree-optimization/40323] " ich at az2000 dot de
@ 2009-06-02 10:14 ` rguenth at gcc dot gnu dot org
  2009-06-02 10:45 ` rguenth at gcc dot gnu dot org
                   ` (5 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-06-02 10:14 UTC (permalink / raw)
  To: gcc-bugs



-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |compile-time-hog
            Summary|compiling just takes forever|[4.5 Regression] compiling
                   |and doesn't really process  |just takes forever and
                   |                            |doesn't really process
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (4 preceding siblings ...)
  2009-06-02 10:14 ` [Bug tree-optimization/40323] [4.5 Regression] " rguenth at gcc dot gnu dot org
@ 2009-06-02 10:45 ` rguenth at gcc dot gnu dot org
  2009-06-02 10:51 ` jamborm at gcc dot gnu dot org
                   ` (4 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-06-02 10:45 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #5 from rguenth at gcc dot gnu dot org  2009-06-02 10:45 -------
Works fine with rev. 147285, fails with rev. 147953.

Martin - obviously

static inline tree
get_ssa_def_if_simple_copy (tree rhs)
{
  while (TREE_CODE (rhs) == SSA_NAME && !SSA_NAME_IS_DEFAULT_DEF (rhs))
    {
      gimple def_stmt = SSA_NAME_DEF_STMT (rhs);

      if (gimple_assign_single_p (def_stmt))
        rhs = gimple_assign_rhs1 (def_stmt);
    }
  return rhs;
}

doesn't terminate if the condition inside the loop is false.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mjambor at suse dot cz
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Priority|P3                          |P1
   Last reconfirmed|0000-00-00 00:00:00         |2009-06-02 10:45:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (5 preceding siblings ...)
  2009-06-02 10:45 ` rguenth at gcc dot gnu dot org
@ 2009-06-02 10:51 ` jamborm at gcc dot gnu dot org
  2009-06-02 17:06 ` jamborm at gcc dot gnu dot org
                   ` (3 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: jamborm at gcc dot gnu dot org @ 2009-06-02 10:51 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #6 from jamborm at gcc dot gnu dot org  2009-06-02 10:51 -------
Apparently I was not careful enough when turning an if branch to a while loop. 
I'll prepare and test a patch straight away.


-- 

jamborm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jamborm at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2009-06-02 10:45:24         |2009-06-02 10:51:47
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (6 preceding siblings ...)
  2009-06-02 10:51 ` jamborm at gcc dot gnu dot org
@ 2009-06-02 17:06 ` jamborm at gcc dot gnu dot org
  2009-06-03 11:56 ` jamborm at gcc dot gnu dot org
                   ` (2 subsequent siblings)
  10 siblings, 0 replies; 12+ messages in thread
From: jamborm at gcc dot gnu dot org @ 2009-06-02 17:06 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #7 from jamborm at gcc dot gnu dot org  2009-06-02 17:06 -------
Created an attachment (id=17946)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17946&action=view)
Fix

Ok, creating a simple testcase was not easy for me but here is a patch
that includes one (and fixes the original issue too).  It still needs
testing but I am quite confident it will pass.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (7 preceding siblings ...)
  2009-06-02 17:06 ` jamborm at gcc dot gnu dot org
@ 2009-06-03 11:56 ` jamborm at gcc dot gnu dot org
  2009-06-03 12:54 ` jamborm at gcc dot gnu dot org
  2009-06-03 15:00 ` ich at az2000 dot de
  10 siblings, 0 replies; 12+ messages in thread
From: jamborm at gcc dot gnu dot org @ 2009-06-03 11:56 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #8 from jamborm at gcc dot gnu dot org  2009-06-03 11:56 -------
Subject: Bug 40323

Author: jamborm
Date: Wed Jun  3 11:56:05 2009
New Revision: 148126

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=148126
Log:
2009-06-03  Martin Jambor  <mjambor@suse.cz>

        PR tree-optimization/40323
        * ipa-prop.c (get_ssa_def_if_simple_copy): Break if not single
        assignment.

        * testsuite/g++.dg/torture/pr40323.C: New file.


Added:
    trunk/gcc/testsuite/g++.dg/torture/pr40323.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-prop.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (8 preceding siblings ...)
  2009-06-03 11:56 ` jamborm at gcc dot gnu dot org
@ 2009-06-03 12:54 ` jamborm at gcc dot gnu dot org
  2009-06-03 15:00 ` ich at az2000 dot de
  10 siblings, 0 replies; 12+ messages in thread
From: jamborm at gcc dot gnu dot org @ 2009-06-03 12:54 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #9 from jamborm at gcc dot gnu dot org  2009-06-03 12:54 -------
I have just verified this is fixed on the current trunk.


-- 

jamborm at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
* [Bug tree-optimization/40323] [4.5 Regression] compiling just takes forever and doesn't really process
  2009-06-01 18:31 [Bug c++/40323] New: compiling just takes forever and doesn't really process ich at az2000 dot de
                   ` (9 preceding siblings ...)
  2009-06-03 12:54 ` jamborm at gcc dot gnu dot org
@ 2009-06-03 15:00 ` ich at az2000 dot de
  10 siblings, 0 replies; 12+ messages in thread
From: ich at az2000 dot de @ 2009-06-03 15:00 UTC (permalink / raw)
  To: gcc-bugs



------- Comment #10 from ich at az2000 dot de  2009-06-03 15:00 -------
Thanks a lot, works just fine. :)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40323


^ permalink raw reply	[flat|nested] 12+ messages in thread
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2009-06-01 18:35 ` ich at az2000 dot de
2009-06-01 18:36 ` ich at az2000 dot de
2009-06-01 21:36 ` [Bug tree-optimization/40323] " ich at az2000 dot de
2009-06-02 10:14 ` [Bug tree-optimization/40323] [4.5 Regression] " rguenth at gcc dot gnu dot org
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