3.1 bootstrap failure on alphaev6-unknown-linux-gnu

[Brad Lucier]

With a completely default configure, 3.1 bootstrap on
alphaev6-unknown-linux-gnu fails with

stage1/xgcc -Bstage1/ -B/export/u10/gcc-3.1/alphaev6-unknown-linux-gnu/bin/ -c  -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/config -I../../gcc/../include ../../gcc/ssa-dce.c -o ssa-dce.o
../../gcc/ssa-dce.c: In function `ssa_eliminate_dead_code':
../../gcc/ssa-dce.c:682: Internal compiler error in gen_add2_insn, at optabs.c:3762

Brad Lucier