re PR rtl-optimization/46002 (ICE: in update_copy_costs, at ira-color.c:319 with…

re PR rtl-optimization/46002 (ICE: in update_copy_costs, at ira-color.c:319 with -fira-algorithm=priority)

2011-02-21  Chung-Lin Tang  <cltang@codesourcery.com>

	PR rtl-optimization/46002
	* ira-color.c (update_copy_costs): Change class intersection
	test to reg_class_contents[] test of 'hard_regno'.

From-SVN: r170388

gcc/ChangeLog

+2011-02-21  Chung-Lin Tang  <cltang@codesourcery.com>
+
+	PR rtl-optimization/46002
+	* ira-color.c (update_copy_costs): Change class intersection
+	test to reg_class_contents[] test of 'hard_regno'.
+
 2011-02-21  Joseph Myers  <joseph@codesourcery.com>
 
 	* config/alpha/osf5.opt (mno-mips-tfile): Mark as Target rather

gcc/ira-color.c

@@ -292,7 +292,8 @@ update_copy_costs (ira_allocno_t allocno, bool decr_p)
 	    gcc_unreachable ();
 
 	  cover_class = ALLOCNO_COVER_CLASS (another_allocno);
-	  if (! ira_reg_classes_intersect_p[rclass][cover_class]
+	  if (! TEST_HARD_REG_BIT (reg_class_contents[cover_class],
+				   hard_regno)
 	      || ALLOCNO_ASSIGNED_P (another_allocno))
 	    continue;