vfp.md (*thumb2_movdf_vfp): Require one of the operands to be a register.

2012-09-17  Ruben Buchatskiy  <ruben@ispras.ru>

        * config/arm/vfp.md (*thumb2_movdf_vfp): Require one of the operands
        to be a register.

From-SVN: r191375

gcc/ChangeLog

+2012-09-17  Ruben Buchatskiy  <ruben@ispras.ru>
+
+	* config/arm/vfp.md (*thumb2_movdf_vfp): Require one of the operands
+	to be a register.
+
 2012-09-16  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* calls.c (expand_call): Use emit_group_move for PARALLEL->PARALLEL

gcc/config/arm/vfp.md

@@ -471,7 +471,9 @@
 (define_insn "*thumb2_movdf_vfp"
   [(set (match_operand:DF 0 "nonimmediate_soft_df_operand" "=w,?r,w ,w  ,Uv,r ,m,w,r")
 	(match_operand:DF 1 "soft_df_operand"		   " ?r,w,Dy,UvF,w, mF,r, w,r"))]
-  "TARGET_THUMB2 && TARGET_HARD_FLOAT && TARGET_VFP"
+  "TARGET_THUMB2 && TARGET_HARD_FLOAT && TARGET_VFP
+   && (   register_operand (operands[0], DFmode)
+       || register_operand (operands[1], DFmode))"
   "*
   {
     switch (which_alternative)