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19990223 trunk build runs around in circles in insn_first_p in rtlanal.c compiling 1500+ line Fortran source :-)



L.S.,

[ using options -O2 -funroll-loops on i686-pc-linux-gnu ]

Gdb sez:

(gdb) run  a.f -quiet -dumpbase a.f -O2 -version -fversion
-funroll-loops -o /tmp/ccH7haaa.s
Starting program:
/usr/snp/lib/gcc-lib/i686-pc-linux-gnu/egcs-2.93.09/f771 a.f -quiet
-dumpbase a.f -O2 -version -fversion -funroll-loops -o /tmp/ccH7haaa.s
GNU F77 version egcs-2.93.09 19990223 (gcc2 ss-980929 experimental)
(i686-pc-linux-gnu) compiled by GNU C version egcs-2.93.09 19990223
(gcc2 ss-980929 experimental).
GNU Fortran Front End version 0.5.24-19990219
^C
Program received signal SIGINT, Interrupt.
0x81050e4 in insn_first_p (insn=0x87b7ba0, reference=0x86b3278) at
../../egcs/gcc/rtlanal.c:2215
2215      for (p = insn, q = reference; ; p = NEXT_INSN (p), q =
NEXT_INSN (q))
(gdb) list
2210    insn_first_p (insn, reference)
2211         rtx insn, reference;
2212    {
2213      rtx p, q;
2214    
2215      for (p = insn, q = reference; ; p = NEXT_INSN (p), q =
NEXT_INSN (q))
2216        {
2217          /* Start with test for not first so that INSN == REFERENCE
yields not
2218             first.  */
2219          if (q == insn || ! p)

Gzip'd, uuencoded Fortran source follows; enjoy :-)

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`
end

-- 
Toon Moene (toon@moene.indiv.nluug.nl)
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands
Phone: +31 346 214290; Fax: +31 346 214286
g77 Support: fortran@gnu.org; egcs: egcs-bugs@cygnus.com