[Bug bootstrap/45177] New: [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[Bug bootstrap/45177] New: [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[mikpe at it dot uu dot se]

Attempting to build gcc-4.6 r162856 (head as of a few minutes ago) on
i686-linux as a cross to armv5tel-linux-gnueabi fails with cc1 running out of
memory:

/tmp/objdir/./gcc/xgcc -B/tmp/objdir/./gcc/
-B/home/mikpe/pkgs/linux-x86/cross-armv5tel/armv5tel-unknown-linux-gnueabi/bin/
-B/home/mikpe/pkgs/linux-x86/cross-armv5tel/armv5tel-unknown-linux-gnueabi/lib/
-isystem
/home/mikpe/pkgs/linux-x86/cross-armv5tel/armv5tel-unknown-linux-gnueabi/include
-isystem
/home/mikpe/pkgs/linux-x86/cross-armv5tel/armv5tel-unknown-linux-gnueabi/sys-include
   -g -O2 -O2  -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -W -Wall
-Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include  -fPIC -Wno-missing-prototypes -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -I.
-I. -I../.././gcc -I/tmp/gcc-4.6-r162856/libgcc -I/tmp/gcc-4.6-r162856/libgcc/.
-I/tmp/gcc-4.6-r162856/libgcc/../gcc -I/tmp/gcc-4.6-r162856/libgcc/../include 
-DHAVE_CC_TLS  -o _udivmoddi4.o -MT _udivmoddi4.o -MD -MP -MF _udivmoddi4.dep
-DL_udivmoddi4 -c /tmp/gcc-4.6-r162856/libgcc/../gcc/libgcc2.c \
          -fexceptions -fnon-call-exceptions 

cc1: out of memory allocating 171803424 bytes after a total of 46485504 bytes
make[2]: *** [_udivmoddi4.o] Error 1
make[2]: Leaving directory `/tmp/objdir/armv5tel-unknown-linux-gnueabi/libgcc'
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory `/tmp/objdir'
make: *** [all] Error 2

This happend twice in a row now.  Repeating it a third time and watching the
process with 'top' I see that cc1 grows to somewhere over 2.5 GB virtual before
dying.  The machine has 6 GB of RAM and 4 GB of swap, but it didn't start
swapping before cc1 died.

4.6-20100731 (r162788) did not have this problem.

Full configuration line:
/tmp/gcc-4.6-r162856/configure --target=armv5tel-unknown-linux-gnueabi
--with-arch=armv5te --with-tune=xscale
--prefix=/home/mikpe/pkgs/linux-x86/cross-armv5tel
--with-gmp=/home/mikpe/pkgs/linux-x86/gmp-4.3.2
--with-mpfr=/home/mikpe/pkgs/linux-x86/mpfr-2.4.2
--with-mpc=/home/mikpe/pkgs/linux-x86/mpc-0.8.2 --disable-plugin --disable-lto
--disable-nls --disable-shared --disable-libmudflap --disable-multilib
--enable-threads=posix --enable-checking=release --enable-languages=c


-- 
           Summary: [4.6 regression] cc1 runs out of memory building libgcc
                    in ARM cross-compiler
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mikpe at it dot uu dot se
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: armv5tel-unknown-linux-gnueabi


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-08-04 09:19 -------
Can you check where it sits eating all emmory?


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[mikpe at it dot uu dot se]

------- Comment #2 from mikpe at it dot uu dot se  2010-08-04 10:01 -------
Attaching gdb after cc1 just passed 2.5 G virtual:

0x080c0c93 in pool_alloc (pool=0xa45d708) at
/tmp/gcc-4.6-r162856/gcc/alloc-pool.c:252
252     {
Missing separate debuginfos, use: debuginfo-install glibc-2.10.2-1.i686
(gdb) bt
#0  0x080c0c93 in pool_alloc (pool=0xa45d708) at
/tmp/gcc-4.6-r162856/gcc/alloc-pool.c:252
#1  0x0812091e in df_ref_create_structure (cl=DF_REF_REGULAR,
collection_rec=<value optimized out>, 
    reg=0xb757a1c0, loc=0xb734d814, bb=0xb7534400, info=0xa46b930,
ref_type=DF_REF_REG_MEM_STORE, 
    ref_flags=0, width=-1, offset=-1, mode=VOIDmode) at
/tmp/gcc-4.6-r162856/gcc/df-scan.c:2802
#2  0x08120a8c in df_ref_record (cl=<value optimized out>,
collection_rec=<value optimized out>, 
    reg=<value optimized out>, loc=0xb734d814, bb=0xb7534400,
insn_info=0xa46b930, 
    ref_type=DF_REF_REG_MEM_STORE, ref_flags=0, width=-1, offset=-1,
mode=VOIDmode)
    at /tmp/gcc-4.6-r162856/gcc/df-scan.c:2928
#3  0x081210d7 in df_uses_record (cl=<value optimized out>,
collection_rec=<value optimized out>, 
    loc=<value optimized out>, ref_type=DF_REF_REG_MEM_STORE, bb=0xb7534400,
insn_info=0xa46b930, 
    flags=0, width=-1, offset=-1, mode=VOIDmode) at
/tmp/gcc-4.6-r162856/gcc/df-scan.c:3159
#4  0x081219d7 in df_insn_refs_collect (collection_rec=<value optimized out>, 
    bb=<value optimized out>, insn_info=0x1f68fb8) at
/tmp/gcc-4.6-r162856/gcc/df-scan.c:3571
#5  0x08121f3a in df_insn_refs_verify (collection_rec=0xbfb95d50, bb=0x7,
insn=<value optimized out>, 
    abort_if_fail=0 '\0') at /tmp/gcc-4.6-r162856/gcc/df-scan.c:4466
#6  0x081222b6 in df_insn_rescan (insn=0x13e97828) at
/tmp/gcc-4.6-r162856/gcc/df-scan.c:1260
#7  0x0826d4f3 in peep2_update_life (prev=<value optimized out>, last=<value
optimized out>, 
    match_len=<value optimized out>, bb=<value optimized out>) at
/tmp/gcc-4.6-r162856/gcc/recog.c:3313
#8  peephole2_optimize (prev=<value optimized out>, last=<value optimized out>, 
    match_len=<value optimized out>, bb=<value optimized out>) at
/tmp/gcc-4.6-r162856/gcc/recog.c:3441
#9  rest_of_handle_peephole2 (prev=<value optimized out>, last=<value optimized
out>, 
    match_len=<value optimized out>, bb=<value optimized out>) at
/tmp/gcc-4.6-r162856/gcc/recog.c:3619
#10 0x082534cb in execute_one_pass (pass=0x8863640) at
/tmp/gcc-4.6-r162856/gcc/passes.c:1564
#11 0x0825374d in execute_pass_list (pass=0x8863640) at
/tmp/gcc-4.6-r162856/gcc/passes.c:1619
#12 0x08253760 in execute_pass_list (pass=0x88634e0) at
/tmp/gcc-4.6-r162856/gcc/passes.c:1620
#13 0x08253760 in execute_pass_list (pass=0x88634a0) at
/tmp/gcc-4.6-r162856/gcc/passes.c:1620
#14 0x0831f87a in tree_rest_of_compilation (fndecl=0xb74dc400)
    at /tmp/gcc-4.6-r162856/gcc/tree-optimize.c:452
#15 0x0844c02f in cgraph_expand_function (node=<value optimized out>)
    at /tmp/gcc-4.6-r162856/gcc/cgraphunit.c:1643
#16 0x0844d201 in cgraph_expand_all_functions () at
/tmp/gcc-4.6-r162856/gcc/cgraphunit.c:1722
#17 cgraph_optimize () at /tmp/gcc-4.6-r162856/gcc/cgraphunit.c:1978
#18 0x0844da15 in cgraph_finalize_compilation_unit () at
/tmp/gcc-4.6-r162856/gcc/cgraphunit.c:1185
#19 0x08056f9c in c_write_global_declarations () at
/tmp/gcc-4.6-r162856/gcc/c-decl.c:9698
#20 0x082e2324 in compile_file () at /tmp/gcc-4.6-r162856/gcc/toplev.c:957
#21 do_compile () at /tmp/gcc-4.6-r162856/gcc/toplev.c:2295
#22 toplev_main () at /tmp/gcc-4.6-r162856/gcc/toplev.c:2336
#23 0x080baeeb in main (argc=62, argv=0xbfb96134) at
/tmp/gcc-4.6-r162856/gcc/main.c:36


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[mikpe at it dot uu dot se]

------- Comment #3 from mikpe at it dot uu dot se  2010-08-04 20:06 -------
It's caused by r162815:
http://gcc.gnu.org/ml/gcc-cvs/2010-08/msg00026.html

The build failure still occurs with r162878.


-- 

mikpe at it dot uu dot se changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bernds at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[bernds at gcc dot gnu dot org]

------- Comment #4 from bernds at gcc dot gnu dot org  2010-08-04 21:16 -------
I'm not seeing this with my ARM cross-compilers.  Can you attach a .i file?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[mikpe at it dot uu dot se]

------- Comment #5 from mikpe at it dot uu dot se  2010-08-04 22:15 -------
Created an attachment (id=21398)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21398&action=view)
preprocessed source for _udivmoddi4

In non-parallel builds _udivmoddi4 is always the first module to make cc1 run
out of memory.  I get the error on both i686 and x86_64 hosts, and with both
gcc-4.4.4 and gcc-4.3.5 as bootstrap compilers (only tried 4.3.5 on i686
though).

I did use --with-arch=armv5te --with-tune=xscale when configuring my compiler,
which may be relevant as it changes instruction selection defaults.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[bernds at gcc dot gnu dot org]

------- Comment #6 from bernds at gcc dot gnu dot org  2010-08-10 18:45 -------
Subject: Bug 45177

Author: bernds
Date: Tue Aug 10 18:45:10 2010
New Revision: 163077

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163077
Log:
        PR bootstrap/45177
        * config/arm/arm.c (multiple_operation_profitable_p): Move xscale
        test here from arm_gen_load_multiple_1.
        (arm_gen_load_multiple_1, arm_gen_store_multiple_1): Use
        multiple_operation_profitable_p.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[ramana at gcc dot gnu dot org]

------- Comment #7 from ramana at gcc dot gnu dot org  2010-08-10 22:17 -------
Is this now fixed ? 


-- 

ramana at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177

[Bug bootstrap/45177] [4.6 regression] cc1 runs out of memory building libgcc in ARM cross-compiler

[bernds at gcc dot gnu dot org]

------- Comment #8 from bernds at gcc dot gnu dot org  2010-08-10 22:31 -------
Yes.


-- 

bernds at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45177