[Bug c/62113] New: [graphite] ICE using -floop-parallelize-all

[Bug c/62113] New: [graphite] ICE using -floop-parallelize-all

[drfiemost at email dot it]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62113

            Bug ID: 62113
           Summary: [graphite] ICE using -floop-parallelize-all
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: drfiemost at email dot it

Created attachment 33304
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33304&action=edit
Preprocessed source

gcc -O2 -floop-parallelize-all -c rdft.i 

ends up eating all memory (8Gb) and then dies:

gcc: internal compiler error: Killed (program cc1)


Reproduced with both 4.8 and 4.9:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.8.4/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.8-20140807/configure --prefix=/usr --enable-shared
--disable-static --disable-dependency-tracking --enable-languages=c,c++
--disable-multilib --with-system-zlib --disable-bootstrap
Thread model: posix
gcc version 4.8.4 20140807 (prerelease) (GCC) 


Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.9.1/configure --prefix=/usr --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--enable-languages=c,c++ --disable-multilib --disable-bootstrap
--with-system-zlib --disable-static --disable-dependency-tracking
Thread model: posix
gcc version 4.9.1 (GCC)

[Bug tree-optimization/62113] [graphite] ICE using -floop-parallelize-all

[drfiemost at email dot it]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62113

--- Comment #1 from Leandro Nini <drfiemost at email dot it> ---
Created attachment 33322
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33322&action=edit
Reduced source

[Bug tree-optimization/62113] [graphite] ICE using -floop-parallelize-all

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62113

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |compile-time-hog,
                   |                            |memory-hog
             Target|                            |arm, aarch64, x86_64
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-08-14
                 CC|                            |ktkachov at gcc dot gnu.org
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.4, 4.9.1, 5.0

--- Comment #2 from ktkachov at gcc dot gnu.org ---
Confirmed on 4.9.1 and current trunk on arm and aarch64. Didn't try 4.8

[Bug tree-optimization/62113] [graphite] ICE using -floop-parallelize-all

[spop at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62113

Sebastian Pop <spop at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |spop at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #3 from Sebastian Pop <spop at gcc dot gnu.org> ---
Fixed on trunk with a recent ISL-0.15 that contains the compute time out
functions.

$ time gcc -O2 -floop-parallelize-all -c rdft.i
real 0m1.763s