diff options
Diffstat (limited to 'gcc/tree-stdarg.c')
| -rw-r--r-- | gcc/tree-stdarg.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c index 5c3b81b..c0d16b1 100644 --- a/gcc/tree-stdarg.c +++ b/gcc/tree-stdarg.c @@ -660,16 +660,30 @@ execute_optimize_stdarg (void) si.va_start_count++; ap = TREE_VALUE (TREE_OPERAND (call, 1)); - if (TREE_CODE (ap) != ADDR_EXPR - || TYPE_MAIN_VARIANT (TREE_TYPE (TREE_OPERAND (ap, 0))) - != TYPE_MAIN_VARIANT (va_list_type_node) - || TREE_CODE (TREE_OPERAND (ap, 0)) != VAR_DECL) + + if (TREE_CODE (ap) != ADDR_EXPR) { va_list_escapes = true; break; } - ap = TREE_OPERAND (ap, 0); + if (TREE_CODE (ap) == ARRAY_REF) + { + if (! integer_zerop (TREE_OPERAND (ap, 1))) + { + va_list_escapes = true; + break; + } + ap = TREE_OPERAND (ap, 0); + } + if (TYPE_MAIN_VARIANT (TREE_TYPE (ap)) + != TYPE_MAIN_VARIANT (va_list_type_node) + || TREE_CODE (ap) != VAR_DECL) + { + va_list_escapes = true; + break; + } + if (is_global_var (ap)) { va_list_escapes = true; |