[Bug target/50751] SH Target: Displacement addressing does not work for QImode and HImode

[kkojima at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50751

--- Comment #12 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2011-10-27 
22:30:39 UTC ---
It seems that base_reg+index_reg addressing requires special
handling in RA and the move insn like

(define_insn "*movqi_m_reg_reg_store"
  [(set (mem:QI (plus:SI (match_operand:SI 0 "arith_reg_operand" "%z")
             (match_operand:SI 1 "arith_reg_operand" "r")))
    (match_operand:QI 2 "arith_reg_operand" "r"))]
  "TARGET_SH1"
  "mov.b    %2,@(%0,%1)"
  [(set_attr "type" "store")])

might be unexpected for RA.