re PR rtl-optimization/8613 (-O2 optimization generates wrong code)

	PR optimization/8613
	* builtins.c (expand_builtin): Emit postincrements before expanding
	builtin functions.

From-SVN: r63207

gcc/ChangeLog

+2003-02-21  Glen Nakamura  <glen@imodulo.com>
+
+	PR optimization/8613
+	* builtins.c (expand_builtin): Emit postincrements before expanding
+	builtin functions.
+
 2003-02-21  Ben Elliston  <bje@redhat.com>
 
 	PR other/5634

gcc/builtins.c

@@ -4012,6 +4012,9 @@ expand_builtin (exp, target, subtarget, mode, ignore)
   tree arglist = TREE_OPERAND (exp, 1);
   enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
 
+  /* Perform postincrements before expanding builtin functions. */
+  emit_queue ();
+
   if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
     return (*targetm.expand_builtin) (exp, target, subtarget, mode, ignore);
 

gcc/testsuite/ChangeLog

+2003-02-21  Glen Nakamura  <glen@imodulo.com>
+
+	* gcc.c-torture/execute/20030221-1.c: New test.
+
 2003-02-20  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/9729

gcc/testsuite/gcc.c-torture/execute/20030221-1.c

+/* PR optimization/8613 */
+/* Contributed by Glen Nakamura */
+
+extern void abort (void);
+ 
+int main (void)
+{
+  char buf[16] = "1234567890";
+  char *p = buf;
+
+  *p++ = (char) __builtin_strlen (buf);
+
+  if ((buf[0] != 10) || (p - buf != 1))
+    abort ();
+
+  return 0;
+}