sel-sched-ir.c (init_global_and_expr_for_insn): Forbid copying of recognized by…

sel-sched-ir.c (init_global_and_expr_for_insn): Forbid copying of recognized by cannot_copy_insn_p hook and volatile instructions.

2011-08-11  Dmitry Melnik  <dm@ispras.ru>

	* sel-sched-ir.c (init_global_and_expr_for_insn): Forbid copying of
	recognized by cannot_copy_insn_p hook and volatile instructions.

From-SVN: r177652

gcc/ChangeLog

 2011-08-11  Dmitry Melnik  <dm@ispras.ru>
 
+	* sel-sched-ir.c (init_global_and_expr_for_insn): Forbid copying of
+	recognized by cannot_copy_insn_p hook and volatile instructions.
+
+2011-08-11  Dmitry Melnik  <dm@ispras.ru>
+
 	* sel-sched-ir.c (merge_expr_data): Take maximum spec.
 
 2011-08-11  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/sel-sched-ir.c

@@ -2956,7 +2956,10 @@ init_global_and_expr_for_insn (insn_t insn)
           /* Exception handling insns are always unique.  */
           || (cfun->can_throw_non_call_exceptions && can_throw_internal (insn))
           /* TRAP_IF though have an INSN code is control_flow_insn_p ().  */
-          || control_flow_insn_p (insn))
+          || control_flow_insn_p (insn)
+          || volatile_insn_p (PATTERN (insn))
+          || (targetm.cannot_copy_insn_p
+              && targetm.cannot_copy_insn_p (insn)))
         force_unique_p = true;
       else
         force_unique_p = false;