pa.c (emit_move_sequence): Don't copy 0.0 (double precision) directly to memory...

        * pa/pa.c (emit_move_sequence): Don't copy 0.0 (double precision)
        directly to memory, go through a reg if reload hasn't started.
        * pa/pa.md (main movdf pattern): Don't allow 0.0 (double precision)
        to be copied directly to memory.

From-SVN: r13669

gcc/config/pa/pa.c

@@ -1192,6 +1192,15 @@ emit_move_sequence (operands, mode, scratch_reg)
     }
   else if (GET_CODE (operand0) == MEM)
     {
+      if (mode == DFmode && operand1 == CONST0_RTX (mode)
+	  && !(reload_in_progress || reload_completed))
+	{
+	  rtx temp = gen_reg_rtx (DFmode);
+
+	  emit_insn (gen_rtx (SET, VOIDmode, temp, operand1));
+	  emit_insn (gen_rtx (SET, VOIDmode, operand0, temp));
+	  return 1;
+	}
       if (register_operand (operand1, mode) || operand1 == CONST0_RTX (mode))
 	{
 	  /* Run this case quickly.  */

gcc/config/pa/pa.md

@@ -2237,6 +2237,8 @@
 			  "fG,*rG,f,*r,*r,RQ,o,Q"))]
   "(register_operand (operands[0], DFmode)
     || reg_or_0_operand (operands[1], DFmode))
+   && ! (GET_CODE (operands[1]) == CONST_DOUBLE
+	 && GET_CODE (operands[0]) == MEM)
    && ! TARGET_SOFT_FLOAT"
   "*
 {