3rd operand shift based load instruction.

[sumanth]

Hi,
Below are macro definitions for valid  memory operand.
My goal is to generate a 3rd operand shift based load instruction.
My load instruction has three operands. I want a shift on third operand .
First operand is destination , second operand is base , third operand is 
offset/index(reg).


with the below defined macros  , I am not able to generate the  
instruction i want .( ldw  rd, rm ,rn <<  #k)

Any help is highly appreciated .

#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)                 \
{ if (RTX_OK_FOR_BASE_P ((X)))                    \
    goto ADDR;                            \
  if((LEGITIMATE_OFFSET_ADDRESS_P (MODE, (X))))            \
    goto ADDR;                            \
  if (LEGITIMATE_AUTOINC_ADDRESS_P (MODE, (X)))                \
    goto ADDR;                            \
}





#define RTX_OK_FOR_BASE_P(X) \
 (GET_CODE(X) == REG && REG_OK_FOR_BASE_P ((X)))

#define RTX_OK_FOR_INDEX_P(X) \
(GET_CODE(X) == REG && REG_OK_FOR_INDEX_P ((X)))

#define RTX_OK_FOR_OFFSET_P(X) \
  (GET_CODE (X) == CONST_INT && (-4096 <=(INTVAL (X)) && (INTVAL (X))<= 
4095))

#define RTX_OK_FOR_SHIFT_P(X) \
  (((GET_CODE (X) == ASHIFT)) \
    && ((GET_CODE(XEXP(X,0)) == REG) && REG_OK_FOR_INDEX_P(XEXP(X,0))) 
&& (GET_CODE(XEXP(X,1)) == CONST_INT))



#define LEGITIMATE_OFFSET_ADDRESS_P(MODE, X)                    \
  (((GET_CODE (X) == PLUS))             \
   && RTX_OK_FOR_BASE_P (XEXP ((X), 0))                         \
   && (RTX_OK_FOR_OFFSET_P (XEXP ((X), 1)) || RTX_OK_FOR_INDEX_P(XEXP 
((X), 1) ) || RTX_OK_FOR_SHIFT_P(XEXP((X),1))))


#define LEGITIMATE_AUTOINC_ADDRESS_P(MODE, X)                   \
  (((GET_CODE (X) == POST_INC) || (GET_CODE (X) == POST_DEC)    \
    || (GET_CODE (X) == PRE_INC) || (GET_CODE (X) == PRE_DEC)   \
    || (GET_CODE (X) == POST_MODIFY) || (GET_CODE (X) == PRE_MODIFY))   \
   && RTX_OK_FOR_BASE_P (XEXP ((X), 0)))   


Thanks,
Sumanth  G