output_move_double (operands)
rtx *operands;
{
- enum anon1 { REGOP, OFFSOP, POPOP, CNSTOP, RNDOP } optype0, optype1;
+ enum anon1 { REGOP, OFFSOP, PUSHOP, CNSTOP, RNDOP } optype0, optype1;
rtx latehalf[2];
/* First classify both operands. */
else if (offsettable_memref_p (operands[0]))
optype0 = OFFSOP;
else if (GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
- optype0 = POPOP;
+ optype0 = PUSHOP;
else
optype0 = RNDOP;
else if (offsettable_memref_p (operands[1]))
optype1 = OFFSOP;
else if (GET_CODE (XEXP (operands[1], 0)) == PRE_DEC)
- optype1 = POPOP;
+ optype1 = PUSHOP;
else
optype1 = RNDOP;
else
latehalf[1] = operands[1];
+ /* If insn is effectively movd N(sp),tos then we will do the
+ high word first. We should use the adjusted operand 1 (which is N+4(sp))
+ for the low word as well, to compensate for the first decrement of sp.
+ Given this, it doesn't matter which half we do "first". */
+ if (optype0 == PUSHOP
+ && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
+ && reg_overlap_mentioned_p (stack_pointer_rtx, operands[1]))
+ operands[1] = latehalf[1];
+
/* If one or both operands autodecrementing,
do the two words, high-numbered first. */
-
- if (optype0 == POPOP || optype1 == POPOP)
+ else if (optype0 == PUSHOP || optype1 == PUSHOP)
{
output_asm_insn (singlemove_string (latehalf), latehalf);
return singlemove_string (operands);