Internal compiler error in `extract_insn' (Solaris x86)

[James Macnicol <jamesm at ee dot adfa dot edu dot au>]

	I'm sorry for taking so long to report this but this has been a
bug that has existed in the egcs snapshots for quite some time :

------------------------------ cut here --------------------------------------
c++ -Wall -funroll-loops  -v --save-temps -D_REENTRANT -fPIC -DHAVE_IOSTREAM -DHAVE_FSTREAM -DHAVE_STRCASECMP -DHAVE_STRDUP -DNOGUI -O -DDEBUG -DDEBUG_GET -DDEBUG_EMIT -c h263lib.cpp
Reading specs from /usr/local/lib/gcc-lib/i386-pc-solaris2.8/2.96/specs
gcc version 2.96 20000410 (experimental)
 /usr/local/lib/gcc-lib/i386-pc-solaris2.8/2.96/cpp -lang-c++ -v -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__cplusplus -Dunix -D__svr4__ -D__SVR4 -Dsun -D__unix__ -D__svr4__ -D__SVR4 -D__sun__ -D__unix -D__sun -Asystem(svr4) -D__EXCEPTIONS -D__OPTIMIZE__ -Wall -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -D__tune_i386__ -D_REENTRANT -DHAVE_IOSTREAM -DHAVE_FSTREAM -DHAVE_STRCASECMP -DHAVE_STRDUP -DNOGUI -DDEBUG -DDEBUG_GET -DDEBUG_EMIT h263lib.cpp h263lib.ii
GNU CPP version 2.96 20000410 (experimental) (cpplib)
 (i386 System V Release 4)
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include/g++-3
 /usr/local/include
 /usr/local/lib/gcc-lib/i386-pc-solaris2.8/2.96/include
 /usr/local/i386-pc-solaris2.8/include
 /usr/include
End of search list.
 /usr/local/lib/gcc-lib/i386-pc-solaris2.8/2.96/cc1plus h263lib.ii -quiet -dumpbase h263lib.cc -O -Wall -version -funroll-loops -fPIC -o h263lib.s
GNU C++ version 2.96 20000410 (experimental) (i386-pc-solaris2.8) compiled by GNU C version 2.96 20000410 (experimental).
h263lib.cpp: In function `void DCTPlane (CPlane<short int> &,
h263lib.cpp: DCTMethod)':
h263lib.cpp:635: Unrecognizable insn:
(insn 1032 1031 1036 (parallel[ 
            (set (reg:SI 320)
                (const_int 0 [0x0]))
            (use (reg:SI 320))
            (set (reg:SI 318)
                (plus:SI (reg:SI 307)
                    (ashift:SI (reg:SI 320)
                        (const_int 2 [0x2]))))
            (set (reg:SI 319)
                (plus:SI (reg:SI 319)
                    (ashift:SI (reg:SI 320)
                        (const_int 2 [0x2]))))
            (set (mem:BLK (reg:SI 310) 0)
                (mem:BLK (reg:SI 319) 0))
            (use (reg:SI 19 dirflag))
        ] ) -1 (insn_list 1029 (insn_list 1030 (insn_list 1031 (nil))))
    (expr_list:REG_DEAD (reg:SI 19 dirflag)
        (expr_list:REG_UNUSED (reg:SI 320)
            (expr_list:REG_UNUSED (reg:SI 318)
                (expr_list:REG_UNUSED (reg:SI 319)
                    (nil))))))
h263lib.cpp:635: Internal compiler error in `extract_insn', at
h263lib.cpp:635: recog.c:2044
h263lib.cpp:635: Please submit a full bug report.
h263lib.cpp:635: See <URL:http://www.gnu.org/software/gcc/bugs.html>
h263lib.cpp:635: for instructions.
make: *** [h263lib.ii] Error 1
------------------------------ cut here --------------------------------------

miranda(0):~/video/u263% uname -a
SunOS miranda 5.8 Generic i86pc i386 i86pc

I've seen this with earlier snapshots on Solaris 7 too.  egcs is compiled
with "--with-dwarf2 --with-gnu-as".  This bug only appears with "-O", not
"-O2" or "-gdwarf-2".

See http://www.ozemail.com.au/~sigsegv/h263lib.ii.bz2



--
James Macnicol
j-macnicol@adfa.edu.au