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(output_move_simode_const): New function.

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(singlemove_string): Call it.

From-SVN: r11619
This commit is contained in:
Richard Kenner 1996-03-26 09:49:56 -05:00
parent cab70741fe
commit 02ed0c07c5
1 changed files with 31 additions and 8 deletions
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39
gcc/config/m68k/m68k.c
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@ -1158,6 +1158,34 @@ output_move_const_into_data_reg (operands)
}
}
char *
output_move_simode_const (operands)
rtx *operands;
{
if (operands[1] == const0_rtx
&& (DATA_REG_P (operands[0])
|| GET_CODE (operands[0]) == MEM)
/* clr insns on 68000 read before writing.
This isn't so on the 68010, but we have no alternative for it. */
&& (TARGET_68020
|| !(GET_CODE (operands[0]) == MEM
&& MEM_VOLATILE_P (operands[0]))))
return "clr%.l %0";
else if (DATA_REG_P (operands[0]))
return output_move_const_into_data_reg (operands);
else if (ADDRESS_REG_P (operands[0])
&& INTVAL (operands[1]) < 0x8000
&& INTVAL (operands[1]) >= -0x8000)
return "move%.w %1,%0";
else if (GET_CODE (operands[0]) == MEM
&& GET_CODE (XEXP (operands[0], 0)) == PRE_DEC
&& REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
&& INTVAL (operands[1]) < 0x8000
&& INTVAL (operands[1]) >= -0x8000)
return "pea %a1";
return "move%.l %1,%0";
}
/* Return the best assembler insn template
for moving operands[1] into operands[0] as a fullword. */
@ -1169,14 +1197,9 @@ singlemove_string (operands)
if (FPA_REG_P (operands[0]) || FPA_REG_P (operands[1]))
return "fpmoves %1,%0";
#endif
if (DATA_REG_P (operands[0])
&& GET_CODE (operands[1]) == CONST_INT)
return output_move_const_into_data_reg (operands);
if (operands[1] != const0_rtx)
return "move%.l %1,%0";
if (! ADDRESS_REG_P (operands[0]))
return "clr%.l %0";
return "sub%.l %0,%0";
if (GET_CODE (operands[1]) == CONST_INT)
return output_move_simode_const (operands);
return "move%.l %1,%0";
}