re PR fortran/42169 (gfortran.dg/pr41928.f90:47: internal compiler error: in…

re PR fortran/42169 (gfortran.dg/pr41928.f90:47: internal compiler error: in store_can_be_removed_p, at ira-emit.c:371)

2010-10-20  Vladimir Makarov  <vmakarov@redhat.com>

	PR fortran/42169
	* ira-emit.c (store_can_be_removed_p): Return false instead of
	gcc_unreachable.

From-SVN: r165722

gcc/ChangeLog

+2010-10-20  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR fortran/42169
+	* ira-emit.c (store_can_be_removed_p): Return false instead of
+	gcc_unreachable.
+
 2010-10-20  Dmitry Melnik  <dm@ispras.ru>
 
 	* fold-const.c (fold_binary_loc): New transformation.

gcc/ira-emit.c

@@ -367,7 +367,8 @@ store_can_be_removed_p (ira_allocno_t src_allocno, ira_allocno_t dest_allocno)
 	   prohibit removal of the store in such complicated case.  */
 	return false;
     }
-  gcc_unreachable ();
+  /* It is actually a loop entry -- do not remove the store.  */
+  return false;
 }
 
 /* Generate and attach moves to the edge E.  This looks at the final