breakage with "[PATCH] combine: Disregard clobbers in another test for two SETs (PR65693)"

[Hans-Peter Nilsson]

On Wed, 8 Apr 2015, Segher Boessenkool wrote:
> 2015-04-08  Segher Boessenkool  <segher@kernel.crashing.org>
>
> 	* combine.c (is_parallel_of_n_reg_sets): Change first argument
> 	from an rtx_insn * to an rtx.
> 	(try_combine): Adjust both callers.  Use it once more.

That "once more" is outside of #ifndef HAVE_cc0 and
is_parallel_of_n_reg_sets is only defined inside of one.  Boom.
Full test on a cc0 target (such as cris-elf) is advised, and at
least "make all-gcc" would be a minimum after fixing.

cutnpaste:

g++ -c   -g -O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall
\
-Wwrite-strings -Wcast-qual -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long
-Wno-variadic-macr\
os -Wno-overlength-strings -fno-common  -DHAVE_CONFIG_H -I. -I.
-I/tmp/hpautotest-gcc1/gcc/gcc -I/tmp/hpautotest-gcc1/g\
cc/gcc/. -I/tmp/hpautotest-gcc1/gcc/gcc/../include
-I/tmp/hpautotest-gcc1/gcc/gcc/../libcpp/include
-I/tmp/hpautotest-g\
cc1/cris-elf/gccobj/./gmp -I/tmp/hpautotest-gcc1/gcc/gmp
-I/tmp/hpautotest-gcc1/cris-elf/gccobj/./mpfr -I/tmp/hpautotes\
t-gcc1/gcc/mpfr -I/tmp/hpautotest-gcc1/gcc/mpc/src
-I/tmp/hpautotest-gcc1/gcc/gcc/../libdecnumber
-I/tmp/hpautotest-gc\
c1/gcc/gcc/../libdecnumber/dpd -I../libdecnumber
-I/tmp/hpautotest-gcc1/gcc/gcc/../libbacktrace   -o combine.o
-MT comb\
ine.o -MMD -MP -MF ./.deps/combine.TPo
/tmp/hpautotest-gcc1/gcc/gcc/combine.c
/tmp/hpautotest-gcc1/gcc/gcc/combine.c: In function 'rtx_insn*
try_combine(rtx_insn*, rtx_insn*, rtx_insn*, rtx_insn*, \
int*, rtx_insn*)':
/tmp/hpautotest-gcc1/gcc/gcc/combine.c:3461: error:
'is_parallel_of_n_reg_sets' was not declared in this scope
make[2]: *** [combine.o] Error 1

brgds, H-P