[tree-ssa] i386 bootstrap failure

[Gerald Pfeifer]

The current tree-ssa branch fails to bootstrap on i386 (and by i386 I
really mean i386, for it seems to work on i586):

  echo timestamp > s-attr
  stage1/xgcc -Bstage1/ -B/suse/gp/gcc/i386-pc-linux-gnu/bin/ -c   -g -O2  -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wold-style-definition -Werror -fno-common   -DHAVE_CONFIG_H    -I. -I. -I/cvs/gcc-ts/gcc -I/cvs/gcc-ts/gcc/. -I/cvs/gcc-ts/gcc/../include -I/cvs/gcc-ts/gcc/../libbanshee/libcompat -I/cvs/gcc-ts/gcc/../libbanshee -I/cvs/gcc-ts/gcc/../libbanshee/points-to  /cvs/gcc-ts/gcc/combine.c -o combine.o
  /cvs/gcc-ts/gcc/combine.c: In function `simplify_comparison':
  /cvs/gcc-ts/gcc/combine.c:10294: warning: 'mask' might be used uninitialized in this function
  gmake[2]: *** [combine.o] Error 1
  gmake[2]: Leaving directory `/tmp/OBJ-1229-1851/gcc'
  gmake[1]: *** [stage2_build] Error 2
  gmake[1]: Leaving directory `/tmp/OBJ-1229-1851/gcc'
  gmake: *** [bootstrap-lean] Error 2

Seen on i386-pc-linux-gnu.

Gerald