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Re: Restricted addressing modes in ColdFire FPU for DFmode
>
>I'd have thought that check_v4e_legitimate_address() would have
>rejected double indexed addressing (addressing mode 6), but I'm
>confident I can figure out what's gone wrong...
I modified LEGITIMIZE_ADDRESS to be the following(change marked with
'v4e') to force reg+reg into a register, and everything seems to
work(modulo *extremely* limited testing).
#define COPY_ONCE(Y) if (!copied) { Y = copy_rtx (Y); copied = ch = 1; }
#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \
{ register int ch = (X) != (OLDX); \
if (GET_CODE (X) == PLUS) \
{ int copied = 0; \
if (GET_CODE (XEXP (X, 0)) == MULT) \
{ COPY_ONCE (X); XEXP (X, 0) = force_operand (XEXP (X, 0), 0);} \
if (GET_CODE (XEXP (X, 1)) == MULT) \
{ COPY_ONCE (X); XEXP (X, 1) = force_operand (XEXP (X, 1), 0);} \
/* v4e */ if (TARGET_FPU_V4E && GET_MODE_CLASS (MODE) == MODE_FLOAT) \
/* v4e */ { X = force_reg(Pmode, X); goto WIN; } \
if (ch && GET_CODE (XEXP (X, 1)) == REG \
&& GET_CODE (XEXP (X, 0)) == REG) \
goto WIN; \
if (ch) { GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); } \
if (GET_CODE (XEXP (X, 0)) == REG \
|| (GET_CODE (XEXP (X, 0)) == SIGN_EXTEND \
&& GET_CODE (XEXP (XEXP (X, 0), 0)) == REG \
&& GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode)) \
{ register rtx temp = gen_reg_rtx (Pmode); \
register rtx val = force_operand (XEXP (X, 1), 0); \
emit_move_insn (temp, val); \
COPY_ONCE (X); \
XEXP (X, 1) = temp; \
goto WIN; } \
else if (GET_CODE (XEXP (X, 1)) == REG \
|| (GET_CODE (XEXP (X, 1)) == SIGN_EXTEND \
&& GET_CODE (XEXP (XEXP (X, 1), 0)) == REG \
&& GET_MODE (XEXP (XEXP (X, 1), 0)) == HImode)) \
{ register rtx temp = gen_reg_rtx (Pmode); \
register rtx val = force_operand (XEXP (X, 0), 0); \
emit_move_insn (temp, val); \
COPY_ONCE (X); \
XEXP (X, 0) = temp; \
goto WIN; }}}
Once I write the rest of the code, I'll come back and see if I can
improve on the current solution.
Again, thanx to everyone for all your help!
--
Peter Barada Peter.Barada@motorola.com
Wizard 781-852-2768 (direct)
WaveMark Solutions(wholly owned by Motorola) 781-270-0193 (fax)