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[pf3gnuchains/gcc-fork.git] / gcc / tree-stdarg.c

diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index ef898ee..9b7a126 100644 (file)
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -1,5 +1,5 @@
 /* Pass computing data for optimizing stdarg functions.
-   Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010
+   Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
    Contributed by Jakub Jelinek <jakub@redhat.com>
 
@@ -847,8 +847,12 @@ execute_optimize_stdarg (void)
                  if (get_gimple_rhs_class (gimple_assign_rhs_code (stmt))
                      == GIMPLE_SINGLE_RHS)
                    {
+                     /* Check for ap ={v} {}.  */
+                     if (TREE_CLOBBER_P (rhs))
+                       continue;
+
                      /* Check for tem = ap.  */
-                     if (va_list_ptr_read (&si, rhs, lhs))
+                     else if (va_list_ptr_read (&si, rhs, lhs))
                        continue;
 
                      /* Check for the last insn in:
@@ -875,6 +879,7 @@ execute_optimize_stdarg (void)
                      /* Check for ap ={v} {}.  */
                      if (TREE_CLOBBER_P (rhs))
                        continue;
+
                      /* Check for ap[0].field = temp.  */
                      else if (va_list_counter_struct_op (&si, lhs, rhs, true))
                        continue;