* tree-optimize.c (execute_fixup_cfg): Purge dead abnormal call edges

	if there is a call statement to pure or const function in the block.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165730 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/ChangeLog

+2010-10-20  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* tree-optimize.c (execute_fixup_cfg): Purge dead abnormal call edges
+	if there is a call statement to pure or const function in the block.
+
 2010-10-20  Paul Koning  <pkoning@equallogic.com>
 	Fix several build errors for pdp11 target.

gcc/tree-optimize.c

@@ -271,13 +271,16 @@ execute_fixup_cfg (void)
 	      int flags = gimple_call_flags (stmt);
 	      if (flags & (ECF_CONST | ECF_PURE | ECF_LOOPING_CONST_OR_PURE))
 		{
+		  if (gimple_purge_dead_abnormal_call_edges (bb))
+		    todo |= TODO_cleanup_cfg;
+
 		  if (gimple_in_ssa_p (cfun))
 		    {
 		      todo |= TODO_update_ssa | TODO_cleanup_cfg;
 		      update_stmt (stmt);
 		    }
 		}
-	      
+
 	      if (flags & ECF_NORETURN
 		  && fixup_noreturn_call (stmt))
 		todo |= TODO_cleanup_cfg;