diff options
Diffstat (limited to 'gcc/tree-stdarg.c')
| -rw-r--r-- | gcc/tree-stdarg.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c index ef898ee..9b7a126 100644 --- 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; |