Revert 'Use actual_call_used_reg_set to find conflicting regs'

2015-03-16  Tom de Vries  <tom@codesourcery.com>

	PR middle-end/65414
	Revert:
	2015-03-12  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/64895
	* lra-lives.c (check_pseudos_live_through_calls): Use
	actual_call_used_reg_set instead of call_used_reg_set, if available.

From-SVN: r221448

gcc/ChangeLog

+2015-03-16  Tom de Vries  <tom@codesourcery.com>
+
+	PR middle-end/65414
+	Revert:
+	2015-03-12  Tom de Vries  <tom@codesourcery.com>
+
+	PR rtl-optimization/64895
+	* lra-lives.c (check_pseudos_live_through_calls): Use
+	actual_call_used_reg_set instead of call_used_reg_set, if available.
+
 2015-03-16  Alan Modra  <amodra@gmail.com>
 
 	PR target/63150

gcc/lra-lives.c

@@ -636,12 +636,8 @@ check_pseudos_live_through_calls (int regno)
   if (! sparseset_bit_p (pseudos_live_through_calls, regno))
     return;
   sparseset_clear_bit (pseudos_live_through_calls, regno);
-  bool actual_call_used_reg_set_available_p
-    = !hard_reg_set_empty_p (lra_reg_info[regno].actual_call_used_reg_set);
   IOR_HARD_REG_SET (lra_reg_info[regno].conflict_hard_regs,
-		    (actual_call_used_reg_set_available_p
-		     ? lra_reg_info[regno].actual_call_used_reg_set
-		     : call_used_reg_set));
+		    call_used_reg_set);
 
   for (hr = 0; hr < FIRST_PSEUDO_REGISTER; hr++)
     if (HARD_REGNO_CALL_PART_CLOBBERED (hr, PSEUDO_REGNO_MODE (regno)))