predicates.md (move_src_operand): Allow zero for mode.

	* pa/predicates.md (move_src_operand): Allow zero for mode.
	* pa/pa.md: Fix constraints for zero CONST_DOUBLE in 64-bit DFmode
	move pattern.

From-SVN: r122388

gcc/ChangeLog

+2007-02-27  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* pa/predicates.md (move_src_operand): Allow zero for mode.
+	* pa/pa.md: Fix constraints for zero CONST_DOUBLE in 64-bit DFmode
+	move pattern.
+
 2007-02-27  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/30970

gcc/config/pa/pa.md

@@ -4343,7 +4343,7 @@
   [(set (match_operand:DF 0 "move_dest_operand"
 			  "=!*r,*r,*r,*r,*r,Q,f,f,T")
 	(match_operand:DF 1 "move_src_operand"
-			  "!*r,J,N,K,RQ,*rM,fM,RT,f"))]
+			  "!*r,J,N,K,RQ,*rG,fG,RT,f"))]
   "(register_operand (operands[0], DFmode)
     || reg_or_0_operand (operands[1], DFmode))
    && !TARGET_SOFT_FLOAT && TARGET_64BIT"

gcc/config/pa/predicates.md

@@ -207,11 +207,14 @@
 ;; instruction.
 
 (define_predicate "move_src_operand"
-  (match_code "subreg,reg,const_int,mem")
+  (match_code "subreg,reg,const_int,const_double,mem")
 {
   if (register_operand (op, mode))
     return 1;
 
+  if (op == CONST0_RTX (mode))
+    return 1;
+
   if (GET_CODE (op) == CONST_INT)
     return cint_ok_for_move (INTVAL (op));