h8300.c (expand_a_shift): Avoid invalid RTL sharing.

	* h8300.c (expand_a_shift): Avoid invalid RTL sharing.

From-SVN: r139953

gcc/ChangeLog

+2008-09-03  Jeff Law  <law@redhat.com>
+
+	* h8300.c (expand_a_shift): Avoid invalid RTL sharing.
+
 2008-09-03  Richard Henderson  <rth@redhat.com>
 
 	* config/alpha/alpha.c (alpha_split_lock_test_and_set): Move

gcc/config/h8300/h8300.c

@@ -3659,7 +3659,7 @@ expand_a_shift (enum machine_mode mode, int code, rtx operands[])
       break;
     }
 
-  emit_move_insn (operands[0], operands[1]);
+  emit_move_insn (copy_rtx (operands[0]), operands[1]);
 
   /* Need a loop to get all the bits we want  - we generate the
      code at emit time, but need to allocate a scratch reg now.  */
@@ -3667,9 +3667,9 @@ expand_a_shift (enum machine_mode mode, int code, rtx operands[])
   emit_insn (gen_rtx_PARALLEL
 	     (VOIDmode,
 	      gen_rtvec (2,
-			 gen_rtx_SET (VOIDmode, operands[0],
+			 gen_rtx_SET (VOIDmode, copy_rtx (operands[0]),
 				      gen_rtx_fmt_ee (code, mode,
-						      operands[0], operands[2])),
+						      copy_rtx (operands[0]), operands[2])),
 			 gen_rtx_CLOBBER (VOIDmode,
 					  gen_rtx_SCRATCH (QImode)))));
   return true;