https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83390
--- Comment #8 from Vladimir Makarov <vmakarov at gcc dot gnu.org> --- (In reply to David Binderman from comment #0) > A build of today's gcc trunk with valgrind produces this: > > ==8995== Conditional jump or move depends on uninitialised value(s) > ==8995== at 0xA39BBE: lra_eliminate_regs_1 (lra-eliminations.c:403) > ==8995== by 0xA39BBE: eliminate_regs_in_insn(rtx_insn*, bool, bool, long) > (lra-eliminations.c:1114) > ==8995== by 0xA3A147: process_insn_for_elimination > (lra-eliminations.c:1396) > ==8995== by 0xA3A147: lra_eliminate(bool, bool) (lra-eliminations.c:1459) > > svn blame gives us > > 222223 vmakarov if (CONST_INT_P (XEXP (x, 1)) && INTVAL (XEXP (x, > 1)) == -offset) > > I suspect local variable offset isn't correct. > > Configure lines are > > ../trunk/configure --prefix=/home/dcb/gcc/results.255572.valgrind \ > --disable-bootstrap \ > --disable-multilib \ > --disable-werror \ > --enable-checking=valgrind \ > --enable-languages=c,c++,fortran > > sed 's/-O2/-O3 -funroll-loops -Wtautological-compare/' < Makefile > > Makefile.tmp > mv Makefile.tmp Makefile > > svn info tells us current revision number is 255572. Sorry, I tried to reproduce it according to these instructions (without and with editing the Makefile) but I've failed. Could you confirm that it is still the problem in your environment.
