trying a clang buildworld and get a bunch of
/usr/src/gnu/usr.bin/cc/cc_tools/../../../../contrib/gcc/config/i386/i386.md:4249:29: warning: self-comparison always evaluates to false [-Wtautological-compare]
&& (TARGET_64BIT || DImode != DImode))
^
12 warnings generated.
does not seem harmful, but cosmetically poor
randy