Mainline bootstrap fails on powerpc-apple-darwin7.5.0 with --enable-checking=all

[Matt Austern]

The failure is:
./genattrtab ../../fsf.u/gcc/config/rs6000/rs6000.md > tmp-attrtab.c
genattrtab: Internal error: RTL check: expected elt 0 type 's' or 'S', 
have 'E' (rtx define_peephole) in write_attr_case, at genattrtab.c:3908
make[2]: *** [s-attrtab] Error 1
make[1]: *** [stage1_build] Error 2
make: *** [bootstrap] Error 2

Is this known and/or expected?

			--Matt