[Bug target/11699] New: internal compiler error, unrecognized instruction.

[Bug target/11699] New: internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699

           Summary: internal compiler error, unrecognized instruction.
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cgd at broadcom dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mipsisa64-unknown-elf

mipsisa64-elf tools compile from unified tree with sources
dated 2003-07-28 00:00 UTC.

55 [ldt-sj3-010] gccspin % mipsisa64-elf-gcc -G0 -mabicalls -c trimmed.c 
trimmed.c: In function `a':

trimmed.c:14: error: unrecognizable insn:
(insn 59 58 16 (set (reg:SI 28 gp)
        (unspec_volatile [
                (const_int 0 [0x0])
            ] 10)) -1 (nil)
    (nil))
trimmed.c:14: internal compiler error: in extract_insn, at recog.c:2064
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
56 [ldt-sj3-010] gccspin % mipsisa64-elf-gcc -v
Reading specs from
/projects/bbp_ext13/systems/users/cgd/proj/gcc-testing6/work/mipsisa64-elf.install/bin/../lib/gcc-lib/mipsisa64-elf/3.4/specs
Configured with: /home/cgd/proj/gcc-testing6/combined/configure
--target=mipsisa64-elf
--prefix=/home/cgd/proj/gcc-testing6/work/mipsisa64-elf.install
Thread model: single
gcc version 3.4 20030727 (experimental)
57 [ldt-sj3-010] gccspin % 


the source file will be attached shortly.
(i happened to trip over this, while looking
into another problem, hence the strange options.)

[Bug target/11699] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-07-28 22:11 -------
Created an attachment (id=4499)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4499&action=view)
source file to demonstrate problem.

compile as:

mipsisa64-elf-gcc -G0 -mabicalls -c trimmed.c

[Bug target/11699] internal compiler error, unrecognized instruction.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code

[Bug target/11699] internal compiler error, unrecognized instruction.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


pinskia at physics dot uc dot edu changed:

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


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-29 02:13 -------
On the mainline (Mon Jul 28 22:55:27 UTC 2003) with a cross from powerpc-apple-
darwin6.6, I do not get the ICE.
./xgcc -B. -G0 -mabicalls pr11699.c -S 
Can you try with a new gcc (sorry if this is the next day but who knows)?
Also do you use any patch in the version of gcc?

./xgcc -B. -v
Reading specs from ./specs
Configured with: ../configure --target=mipsisa64-unknown-elf --disable-nls --enable-
languages=c
Thread model: single
gcc version 3.4 20030728 (experimental)

[Bug target/11699] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-07-29 03:17 -------
Subject: Re:  internal compiler error, unrecognized
 instruction.

At 29 Jul 2003 02:13:22 -0000, pinskia at physics dot uc dot edu wrote:
> Can you try with a new gcc (sorry if this is the next day but who
> knows)?

checking out 2003-07-29 03:00 UTC (i.e., sources from about 15 minutes
ago 8-) now.  I'll report results when i have them.


> Also do you use any patch in the version of gcc?

no (not in this case).

[Bug target/11699] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-07-29 05:48 -------
yup, still there with sources dated 2003-07-29 00:00 UTC.

host is x86 linux Red Hat 7.2.  You'll note that the host compiler
is 3.2.3 with some local mods.  the only mods in that compiler for x86
hosts is that -fno-strict-alias is hard-wired.  (I ran into too many problems
w/ strict aliasing on RH 6.0 systems, on which i need to compile some
binaries.)

as noted previously, no mods to the gcc (or other tools) that i'm compiling.

(because i'm sure somebody will ask, i'll also try to build the tools 
w/ /usr/bin/gcc.  8-)


mipsisa64-elf-gcc -v -G0 -mabicalls -c trimmed.c

produces:

Reading specs from /projects/bbp_ext13/systems/users/cgd/proj/gcc-
testing6/work/mipsisa64-elf.install/bin/../lib/gcc-lib/mipsisa64-elf/3.4/specs
Configured with: /home/cgd/proj/gcc-testing6/combined/configure --
target=mipsisa64-elf --prefix=/home/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install
Thread model: single
gcc version 3.4 20030729 (experimental)
 /projects/bbp_ext13/systems/users/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/bin/../lib/gcc-lib/mipsisa64-elf/3.4/cc1 -quiet -v -
iprefix /projects/bbp_ext13/systems/users/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/bin/../lib/gcc-lib/mipsisa64-elf/3.4/ trimmed.c -G0 -quiet -
dumpbase trimmed.c -mabicalls -auxbase trimmed -version -o /tmp/ccjLQUYm.s
ignoring nonexistent directory "/projects/bbp_ext13/systems/users/cgd/proj/gcc-
testing6/work/mipsisa64-elf.install/mipsisa64-elf/sys-include"
ignoring duplicate directory "/home/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/lib/gcc-lib/mipsisa64-elf/3.4/include"
ignoring nonexistent directory "/home/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/mipsisa64-elf/sys-include"
ignoring duplicate directory "/home/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/mipsisa64-elf/include"
#include "..." search starts here:
#include <...> search starts here:
 /projects/bbp_ext13/systems/users/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/lib/gcc-lib/mipsisa64-elf/3.4/include
 /projects/bbp_ext13/systems/users/cgd/proj/gcc-testing6/work/mipsisa64-
elf.install/mipsisa64-elf/include
End of search list.
GNU C version 3.4 20030729 (experimental) (mipsisa64-elf)
        compiled by GNU C version 3.2.3 with SiByte modifications.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
trimmed.c: In function `a':

trimmed.c:14: error: unrecognizable insn:
(insn 59 58 16 (set (reg:SI 28 gp)
        (unspec_volatile [
                (const_int 0 [0x0])
            ] 10)) -1 (nil)
    (nil))
trimmed.c:14: internal compiler error: in extract_insn, at recog.c:2064
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

[Bug target/11699] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-07-29 17:39 -------
Subject: Re:  internal compiler error, unrecognized
 instruction.

At Tue, 29 Jul 2003 05:48:29 +0000 (UTC), "cgd at broadcom dot com" wrote:
> (because i'm sure somebody will ask, i'll also try to build the tools 
> w/ /usr/bin/gcc.  8-)

same behaviour, this time GCC reports as its version:

GNU C version 3.4 20030729 (experimental) (mipsisa64-elf)
        compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-98).

(Yes, that's the compiler on a RH 7.2 system.  "don't ask me."  8-)


Andrew, what assembler were you using?

In particular, were you using one for which GCC decided to use
-mexplicit-relocs.  (gcc does use explicit relocs with the the
assembler i'm using -- from cvs binutils as of the same date as gcc.)

I just tried to compile with:

    mipsisa64-elf-gcc -mno-explicit-relocs -v -G0 -mabicalls -c trimmed.c

and the compile went fine.



chris

[Bug target/11699] internal compiler error, unrecognized instruction.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-07-29 17:43:46
               date|                            |
   Target Milestone|3.4                         |---


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-29 17:43 -------
I was not using any as which gave by default the MIPS as which is wrong in this case.
I can confirm this with `./cc1 -G0 -mexplicit-relocs -mabicalls pr11699.c'.
Since the option -mexplicit-relocs did not exist before 3.4, this is not a regression.

[Bug target/11699] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-07-29 17:49 -------
Subject: Re:  internal compiler error, unrecognized
 instruction.

At 29 Jul 2003 17:43:46 -0000, pinskia at physics dot uc dot edu wrote:
> Since the option -mexplicit-relocs did not exist before 3.4, this is not a regression.

Let me try to spin this my way.  8-)


Consider the args:

        -G0 -mabicalls pr11699.c

gcc 3.3 + stock binutils of approximately same vintage:

        works fine as far as i know.  I've not tested it, but I've
        never seen problems like this before...

CVS gcc + CVS binutils of same vintage:

        crashes.

no "-mexplicit-relocs" options is needed in the latter case, because
-mexplicit-relocs is the *default*.


I.e., compiling this test program with "-G0 -mabicalls" on top of the
built-in defaults used to work, and now does not.

So, regression.


On simple solution to the regression would be to disable
-mexplicit-relocs by default, but that would seriously bite.  8-)


(I can provide you the scripts that i use to checkout and combine, if
that'd help you demonstrate to your satisfaction.)



chris

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
           Priority|P2                          |P1
            Summary|internal compiler error,    |[3.4 Regression] internal
                   |unrecognized instruction.   |compiler error, unrecognized
                   |                            |instruction.
   Target Milestone|---                         |3.4


------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-29 17:52 -------
You are right that it is an user visible regression so for not reading the previous comment right.

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[rsandifo at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


rsandifo at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2003-07-29 17:43:46         |2003-08-07 19:48:19
               date|                            |


------- Additional Comments From rsandifo at gcc dot gnu dot org  2003-08-07 19:48 -------
Looks like it's my fault.

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[rsandifo at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From rsandifo at gcc dot gnu dot org  2003-08-07 20:05 -------
Note that the problem is the combination of -mabicalls with the
configuration's default -mabi=eabi.  

I don't think anyone has defined an abicalls version of EABI.
Perhaps it would be best to just report an error in this case.
What do you think?

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[rsandifo at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


rsandifo at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|critical                    |normal
           Keywords|ice-on-valid-code           |diagnostic

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[cgd at broadcom dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cgd at broadcom dot com  2003-08-07 20:35 -------
Subject: Re:  [3.4 Regression] internal compiler
 error, unrecognized instruction.

At Thu, 7 Aug 2003 20:05:39 +0000 (UTC), "rsandifo at gcc dot gnu dot org" wrote:
> I don't think anyone has defined an abicalls version of EABI.
> Perhaps it would be best to just report an error in this case.
> What do you think?

that'd be reasonable.

now i'm wondering why it was "OK" with no explicit relocs...  i guess
the assembler was falling back to *something* which at least
compiled/assembled...


cgd

Re: [Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[cgd]

At Thu, 7 Aug 2003 20:05:39 +0000 (UTC), "rsandifo at gcc dot gnu dot org" wrote:
> I don't think anyone has defined an abicalls version of EABI.
> Perhaps it would be best to just report an error in this case.
> What do you think?

that'd be reasonable.

now i'm wondering why it was "OK" with no explicit relocs...  i guess
the assembler was falling back to *something* which at least
compiled/assembled...


cgd

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[cvs-commit at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-08-09 07:09 -------
Subject: Bug 11699

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rsandifo@gcc.gnu.org	2003-08-09 07:09:14

Modified files:
	gcc            : ChangeLog 
	gcc/config/mips: mips.c 

Log message:
	PR target/11699
	* config/mips/mips.c (override_options): Reject -mabi=eabi -mabicalls.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.746&r2=2.747
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/mips/mips.c.diff?cvsroot=gcc&r1=1.295&r2=1.296

[Bug target/11699] [3.4 Regression] internal compiler error, unrecognized instruction.

[rsandifo at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11699


rsandifo at gcc dot gnu dot org changed:

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


------- Additional Comments From rsandifo at gcc dot gnu dot org  2003-08-09 07:11 -------
Now produces an error as agreed.