[Bug bootstrap/42775] New: sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[Bug bootstrap/42775] New: sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[laurent at guerby dot net]

../gcc-4.4.2/configure --enable-languages=c --disable-werror
--enable-__cxa_atexit --disable-nls --enable-threads=posix --disable-multilib
--prefix=/opt/cfarm/release/4.4.2 --with-cpu=v8
make bootstrap && make install
PATH=/opt/cfarm/release/4.4.2/bin:$PATH
../gcc-4.4.2/configure --enable-languages=c --disable-werror
--enable-__cxa_atexit --disable-nls --enable-threads=posix --disable-multilib
--prefix=/opt/cfarm/release/4.4.2-v2 --with-cpu=v8
make bootstrap STAGE1_CFLAGS=-O1

fails with

/home/guerby/build442/./gcc/xgcc -B/home/guerby/build442/./gcc/
-B/opt/cfarm/release/4.4.2-v3/sparc64-unknown-linux-gnu/bin/
-B/opt/cfarm/release/4.4.2-v3/sparc64-unknown-linux-gnu/lib/ -isystem
/opt/cfarm/release/4.4.2-v3/sparc64-unknown-linux-gnu/include -isystem
/opt/cfarm/release/4.4.2-v3/sparc64-unknown-linux-gnu/sys-include -g -O2 -O2 
-g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wcast-qual -Wold-style-definition  -isystem ./include 
-fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED   -I. -I.
-I../.././gcc -I../../../gcc-4.4.2/libgcc -I../../../gcc-4.4.2/libgcc/.
-I../../../gcc-4.4.2/libgcc/../gcc -I../../../gcc-4.4.2/libgcc/../include 
-DHAVE_CC_TLS -o _popcountsi2.o -MT _popcountsi2.o -MD -MP -MF _popcountsi2.dep
-DL_popcountsi2 -c ../../../gcc-4.4.2/libgcc/../gcc/libgcc2.c \
          -fvisibility=hidden -DHIDE_EXPORTS
../../../gcc-4.4.2/libgcc/../gcc/libgcc2.c: In function '__popcountsi2':
../../../gcc-4.4.2/libgcc/../gcc/libgcc2.c:787: internal compiler error: Bus
error
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [_popcountsi2.o] Error 1
make[3]: Leaving directory
`/home/guerby/build442/sparc64-unknown-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/home/guerby/build442'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/guerby/build442'
make: *** [bootstrap] Error 2


Without STAGE1_CFLAGS=-O1 bootstrap works.

Note: this is gentoo bug https://bugs.gentoo.org/show_bug.cgi?id=283041


-- 
           Summary: sparc-linux 4.4.2 fails to rebuild itself when using
                    STAGE1_CFLAGS=-O1
           Product: gcc
           Version: 4.4.2
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: laurent at guerby dot net
 GCC build triplet: sparc-linux
  GCC host triplet: sparc-linux
GCC target triplet: sparc-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-01-17 16:05 -------
Please try to reproduce with the 4.4.3 release candidate.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
          Component|bootstrap                   |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[armin76 at gentoo dot org]

------- Comment #2 from armin76 at gentoo dot org  2010-01-17 19:07 -------
(In reply to comment #1)
> Please try to reproduce with the 4.4.3 release candidate.
> 

gcc-4.4.3-RC-20100116 fails the same way.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[laurent at guerby dot net]

------- Comment #3 from laurent at guerby dot net  2010-01-18 08:41 -------
Same result for me with 4.4.3 RC1. backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x004ca580 in copy_virtual_operands ()
Current language:  auto; currently asm
(gdb) bt
#0  0x004ca580 in copy_virtual_operands ()
#1  0x003d58a0 in gimple_duplicate_bb ()
#2  0x0010be80 in duplicate_block ()
#3  0x0010f5e8 in copy_bbs ()
#4  0x00118650 in duplicate_loop_to_header_edge ()
#5  0x004b9350 in gimple_duplicate_loop_to_header_edge ()
#6  0x004a5458 in canonicalize_loop_induction_variables ()
#7  0x004a62e8 in tree_unroll_loops_completely ()
#8  0x004c4d80 in tree_complete_unroll ()
#9  0x003052b8 in execute_one_pass ()
#10 0x00305494 in execute_pass_list ()
#11 0x003054b8 in execute_pass_list ()
#12 0x003054b8 in execute_pass_list ()
#13 0x0042ba74 in tree_rest_of_compilation ()
#14 0x005d05b0 in cgraph_expand_function ()
#15 0x005d2ab8 in cgraph_optimize ()
#16 0x00028308 in c_write_global_declarations ()
#17 0x003cbbb0 in toplev_main ()
#18 0x000adaf4 in main ()


-- 

laurent at guerby dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-01-18 08:41:23
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[laurent at guerby dot net]

------- Comment #4 from laurent at guerby dot net  2010-03-21 19:56 -------
Summary work/fail.


-- 

laurent at guerby dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |laurent at guerby dot net
      Known to fail|                            |4.4.0 4.4.1 4.4.2 4.4.3
      Known to work|                            |4.3.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] sparc-linux 4.4.2 fails to rebuild itself when using STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #5 from ebotcazou at gcc dot gnu dot org  2010-09-19 12:19 -------
Investigating.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|ebotcazou at gcc dot gnu dot|
                   |org                         |
         AssignedTo|unassigned at gcc dot gnu   |ebotcazou at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2010-01-18 08:41:23         |2010-09-19 12:19:49
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug target/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2010-09-19 21:58 -------
tree-ssa-operands.c:copy_virtual_operands is miscompiled by delay slot
scheduling so the workaround is to use STAGE1_CFLAGS="-O1 -fno-delayed-branch".
 Another way out is probably to configure with --disable-stage1-checking.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug rtl-optimization/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #7 from ebotcazou at gcc dot gnu dot org  2010-09-20 10:31 -------
Created an attachment (id=21847)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21847&action=view)
Semi-reduced testcase

To be compiled at -O -mcpu=v8.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug rtl-optimization/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #8 from ebotcazou at gcc dot gnu dot org  2010-09-20 21:30 -------
Subject: Bug 42775

Author: ebotcazou
Date: Mon Sep 20 21:29:48 2010
New Revision: 164458

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164458
Log:
        PR rtl-optimization/42775
        * cfgrtl.c (rest_of_pass_free_cfg): Recompute notes if delay slot
        scheduling is enabled.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgrtl.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug rtl-optimization/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #9 from ebotcazou at gcc dot gnu dot org  2010-09-20 21:31 -------
Subject: Bug 42775

Author: ebotcazou
Date: Mon Sep 20 21:30:35 2010
New Revision: 164460

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164460
Log:
        PR rtl-optimization/42775
        * cfgrtl.c (rest_of_pass_free_cfg): Recompute notes if delay slot
        scheduling is enabled.

Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/cfgrtl.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug rtl-optimization/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #10 from ebotcazou at gcc dot gnu dot org  2010-09-20 21:31 -------
Subject: Bug 42775

Author: ebotcazou
Date: Mon Sep 20 21:31:14 2010
New Revision: 164461

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164461
Log:
        PR rtl-optimization/42775
        * cfgrtl.c (rest_of_pass_free_cfg): Recompute notes if delay slot
        scheduling is enabled.

Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/cfgrtl.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775

[Bug rtl-optimization/42775] [4.4 regression] GCC fails to rebuild itself with STAGE1_CFLAGS=-O1

[ebotcazou at gcc dot gnu dot org]

------- Comment #11 from ebotcazou at gcc dot gnu dot org  2010-09-20 21:35 -------
At last.


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2010-
                   |                            |09/msg01614.html
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42775