[Bug c/50948] New: ICE on armhf with neon code

[Bug c/50948] New: ICE on armhf with neon code

[konstantinos.margaritis at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50948

             Bug #: 50948
           Summary: ICE on armhf with neon code
    Classification: Unclassified
           Product: gcc
           Version: 4.6.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: konstantinos.margaritis@linaro.org
              Host: arm-linux-gnueabihf
            Target: arm-linux-gnueabihf
             Build: arm-linux-gnueabihf


Created attachment 25679
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25679
minimal testcase produced using delta tool from source (propriatery driver
including NEON code)

When building neon code on armhf -which I cannot attach to its full,
due to licensing reason, unfortunately- I get an ICE. Using delta I
was able to get a minimal testcase that produces the exact ICE. The
testcase is attached. Here is the message and the cmd line used:

$ gcc -O -mfpu=neon matrix-min.i
matrix-min.i: In function ‘matrixTranspose’:
matrix-min.i:10:29: internal compiler error: in immed_double_const, at
emit-rtl.c:550
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
Preprocessed source stored into /tmp/cc3zlt4j.out file, please attach
this to your bugreport.

In fact, the same ICE I get on oneiric gcc with the same testcase.

The bug has also been filed on Debian BTS:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=646160

Konstantinos

[Bug target/50948] ICE on armhf with neon code

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50948

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011-11-01
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-11-01 20:44:04 UTC ---
arm-linux-gnueabihf isn't a configuration supported by FSF GCC; if this is
vendor distribution you need to contact your vendor.  Alternatively you need to
show how to produce this on the FSF sources.

[Bug target/50948] ICE on armhf with neon code

[konstantinos.margaritis at linaro dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50948

--- Comment #2 from Konstantinos Margaritis <konstantinos.margaritis at linaro dot org> 2011-11-01 21:07:59 UTC ---
This was the actual cmd line used:

gcc -O -mfpu=neon -mfloat-abi=hard -march=armv7-a -mthumb -fpermissive -c
matrix2-min.i

The Debian armhf package is based on SVN 20111028 (r180603) from the
gcc-4_6-branch.

[Bug target/50948] ICE on armhf with neon code

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50948

--- Comment #3 from ktkachov at gcc dot gnu.org ---
*** Bug 50949 has been marked as a duplicate of this bug. ***

[Bug target/50948] ICE on armhf with neon code

[jgreenhalgh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50948

James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
                 CC|                            |jgreenhalgh at gcc dot gnu.org
         Resolution|---                         |WONTFIX

--- Comment #4 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
GCC 4.6 is no longer maintained or supported. I can't reproduce this ICE on
arm-none-linux-gnueabihf or arm-none-eabi with any of GCC 4.8, GCC 4.9 or
trunk.