mips-sgi-irix6.2 bootstrap fails with -g -O3 -funroll-all-loops

[Kaveh R. Ghazi]

 > From: "Kaveh R. Ghazi" <ghazi@caip.rutgers.edu>
 >  
 >         In testing bootstraps with various BOOT_CFLAGS, I found that
 > mips-sgi-irix6.2 worked at default flags (-g -O2), and also with "-g -O3".
 >  
 >  
 >         However, it failed building libgcc2.a in stage2 when using
 > "-g -O3 -funroll-all-loops".  Here is the error message:
 >  
 >  
 >  > for name in _muldi3 _divdi3 _moddi3 _udivdi3 _umoddi3 _negdi2 _lshrdi3
 >  >      _ashldi3 _ashrdi3 _ffsdi2 _udiv_w_sdiv _udivmoddi4 _cmpdi2 _ucmpdi2
 >  >      _floatdidf _floatdisf _fixunsdfsi _fixunssfsi _fixunsdfdi _fixdfdi
 >  >      _fixunssfdi _fixsfdi _fixxfdi _fixunsxfdi _floatdixf _fixunsxfsi
 >  >      _fixtfdi _fixunstfdi _floatditf __gcc_bcmp _varargs __dummy _eprintf
 >  >      _bb _shtab _clear_cache _trampoline __main _exit _ctors _pure; \
 >  > do \
 >  >   echo ${name}; \
 >  >   ./xgcc -B./ -B/usr/local/mips-sgi-irix6.2/bin/ -O2 -DIN_GCC -W -Wall
 >  >      -g -O3 -funroll-all-loops -I./include -g1 -DIN_LIBGCC2
 >  >      -D__GCC_FLOAT_NOT_NEEDED -I. -I. -I./config -I./../include -c
 >  >      -DL${name} \
 >  >       ./libgcc2.c -o ${name}.o; \
 >  >   if [ $? -eq 0 ] ; then true; else exit 1; fi; \
 >  >   ar rc tmplibgcc2.a ${name}.o; \
 >  >   rm -f ${name}.o; \
 >  > done
 >  > _muldi3
 >  > rtl.c:384: Internal compiler error in function copy_rtx
 >  
 >  
 >         If it matters, I used cc for stage1.
 >  
 >                 --Kaveh

	Grr, I forgot to say I was using egcs-2.92.33 19981227. 
Specifically my checkout was done after Jeff's gengenrtl.c bzero fix, so
that patch did not help this problem. 

	Ditto for http://www.cygnus.com/ml/egcs-bugs/1998-Dec/0669.html .

--
Kaveh R. Ghazi			Engagement Manager / Project Services
ghazi@caip.rutgers.edu		Icon CMT Corp.