rl78-elf: Compilation broken due to missing constraint

[Jan-Benedict Glaw]

Hi!

I guess you forgot a small patch to constraints.md, because since this
commit which uses a new "U" constraint, the rl78-elf target won't
build:

2013-05-31  Kaushik Phatak  <kaushik.phatak@kpitcummins.com>

	* config/rl78/rl78.md (mulqi3,mulhi3): New define_expands.
	(*mulqi3_rl78,*mulhi3_rl78,*mulhi3_g13): New define_insns.


[...]
g++   -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common  -DHAVE_CONFIG_H -DGENERATOR_FILE -static-libstdc++ -static-libgcc  -o build/genoutput \
            build/genoutput.o build/rtl.o build/read-rtl.o build/ggc-none.o build/vec.o build/min-insn-modes.o build/gensupport.o build/print-rtl.o build/read-md.o build/errors.o ../build-x86_64-unknown-linux-gnu/libiberty/libiberty.a
build/genoutput ../../../../gcc/gcc/config/rl78/rl78.md \
          insn-conditions.md > tmp-output.c
../../../../gcc/gcc/config/rl78/rl78.md:265: error: undefined machine-specific constraint at this point: "U"
../../../../gcc/gcc/config/rl78/rl78.md:265: note:  in operand 1
../../../../gcc/gcc/config/rl78/rl78.md:282: error: undefined machine-specific constraint at this point: "U"
../../../../gcc/gcc/config/rl78/rl78.md:282: note:  in operand 1
../../../../gcc/gcc/config/rl78/rl78.md:297: error: undefined machine-specific constraint at this point: "U"
../../../../gcc/gcc/config/rl78/rl78.md:297: note:  in operand 1
make[2]: *** [s-output] Error 1


MfG, JBG

-- 
      Jan-Benedict Glaw      jbglaw@lug-owl.de              +49-172-7608481
  Signature of:                        Lauf nicht vor Deinem Glück davon:
  the second  :                             Es könnte hinter Dir stehen!
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