[Bug tree-optimization/43472] New: gcc -O3: exhausts memory on whetstone.cbe.

[Bug tree-optimization/43472] New: gcc -O3: exhausts memory on whetstone.cbe.

[edwintorok at gmail dot com]

gcc -O2 works on this file:
gcc whetstone.cbe.c -lm -O2 -fno-strict-aliasing -fno-inline -m64
-fomit-frame-pointer

gcc -O3 exhausts memory:
gcc whetstone.cbe.c -lm -O3 -fno-strict-aliasing -fno-inline -m64
-fomit-frame-pointer
virtual memory exhausted: Cannot allocate memory  

$ gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.3-3'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc
--with-arch-32=i486 --with-tune=generic --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.3 (Debian 4.4.3-3)

$ uname -a
Linux debian 2.6.33-00175-g2d1299a0 #10 SMP PREEMPT Mon Mar 15 15:42:54 EET
2010 x86_64 GNU/Linux

The system has plenty of memory (4G of RAM + even more swap)
$ free
             total       used       free     shared    buffers     cached
Mem:       3980032    1392288    2587744          0      20492     569508
-/+ buffers/cache:     802288    3177744
Swap:      5863704     777788    5085916


-- 
           Summary: gcc -O3: exhausts memory on whetstone.cbe.
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: edwintorok at gmail dot com
 GCC build triplet: x86_64-linux-gnu
  GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43472

[Bug tree-optimization/43472] gcc -O3: exhausts memory on whetstone.cbe.

[edwintorok at gmail dot com]

------- Comment #1 from edwintorok at gmail dot com  2010-03-21 20:11 -------
Created an attachment (id=20155)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20155&action=view)
whetstone.cbe.c

testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43472

[Bug tree-optimization/43472] gcc -O3: exhausts memory on whetstone.cbe.

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2010-03-21 23:01 -------
Confirmed.  Looks like a dup of PR43415.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |43415
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|                            |4.4.3
      Known to work|                            |4.5.0
   Last reconfirmed|0000-00-00 00:00:00         |2010-03-21 23:01:48
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43472

[Bug tree-optimization/43472] gcc -O3: exhausts memory on whetstone.cbe.

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2010-03-22 15:47 -------
It is.

*** This bug has been marked as a duplicate of 43415 ***


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43472