GCC build failure, HEAD@166434 on native

[GCC regression tester]

With your recent patch, GCC HEAD revision 166434 had problems on:
native: build (about the same as the previous build)
Attached is build output for those targets.
The previous build was of revision 166433.

Log information for changes since the last build:
------------------------------------------------------------------------
r166434 | amylaar | 2010-11-08 07:07:32 -0800 (Mon, 08 Nov 2010) | 3 lines
Changed paths:
   M /trunk/gcc/ChangeLog
   M /trunk/gcc/caller-save.c

	* caller-save.c (reg_save_code): After HARD_REGNO_MODE_OK check fails,
	assert that REG is a hard register number before using it as an index.

------------------------------------------------------------------------

For more information, see <http://glutton.geoffk.org/HEAD/>.

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		/home/regress/tbox/svn-gcc/gcc/config/host-linux.c
/home/regress/tbox/native/build/./prev-gcc/xgcc -B/home/regress/tbox/native/build/./prev-gcc/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/lib/ -isystem /home/regress/tbox/objs/i686-pc-linux-gnu/include -isystem /home/regress/tbox/objs/i686-pc-linux-gnu/sys-include    -c   -g -O2 -fomit-frame-pointer -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I. -I/home/regress/tbox/svn-gcc/gcc -I/home/regress/tbox/svn-gcc/gcc/. -I/home/regress/tbox/svn-gcc/gcc/../include -I/home/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber/bid -I../libdecnumber    /home/regress/tbox/svn-gcc/!
 gcc/cgraph.c -o cgraph.o
/home/regress/tbox/native/build/./prev-gcc/xgcc -B/home/regress/tbox/native/build/./prev-gcc/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/bin/ -B/home/regress/tbox/objs/i686-pc-linux-gnu/lib/ -isystem /home/regress/tbox/objs/i686-pc-linux-gnu/include -isystem /home/regress/tbox/objs/i686-pc-linux-gnu/sys-include    -c   -g -O2 -fomit-frame-pointer -gtoggle -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I. -I/home/regress/tbox/svn-gcc/gcc -I/home/regress/tbox/svn-gcc/gcc/. -I/home/regress/tbox/svn-gcc/gcc/../include -I/home/regress/tbox/svn-gcc/gcc/../libcpp/include  -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber -I/home/regress/tbox/svn-gcc/gcc/../libdecnumber/bid -I../libdecnumber    /home/regress/tbox/svn-gcc/!
 gcc/cgraphbuild.c -o cgraphbuild.o
/home/regress/tbox/svn-gcc/gcc/config/i386/i386.c: In function 'ix86_expand_split_stack_prologue':
/home/regress/tbox/svn-gcc/gcc/config/i386/i386.c:11174:4: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
/home/regress/tbox/svn-gcc/gcc/config/i386/i386.c:11175:4: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
/home/regress/tbox/svn-gcc/gcc/config/i386/i386.c:11205:4: error: left shift count >= width of type [-Werror]
cc1: all warnings being treated as errors

make[3]: *** [i386.o] Error 1
make[3]: *** Waiting for unfinished jobs....
rm gcj-dbtool.pod jcf-dump.pod jv-convert.pod grmic.pod gcov.pod gcj.pod gc-analyze.pod gfdl.pod cpp.pod gij.pod gfortran.pod fsf-funding.pod gcc.pod
make[3]: Leaving directory `/home/regress/tbox/native/build/gcc'
make[2]: *** [all-stage2-gcc] Error 2
make[2]: Leaving directory `/home/regress/tbox/native/build'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/home/regress/tbox/native/build'
make: *** [bootstrap] Error 2
+ '[' -s .bad_compare ']'
+ exit 1
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-- 
Geoffrey Keating <geoffk@geoffk.org> 
(via an automated GCC regression-testing script.)