diff options
Diffstat (limited to 'gcc/cp/decl.c')
| -rw-r--r-- | gcc/cp/decl.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c index 43cf3df36ba..2f444656842 100644 --- a/gcc/cp/decl.c +++ b/gcc/cp/decl.c @@ -4132,6 +4132,17 @@ cxx_init_decl_processing (void) /* Now, C++. */ current_lang_name = lang_name_cplusplus; + if (aligned_new_threshhold > 1 + && !pow2p_hwi (aligned_new_threshhold)) + { + error ("-faligned-new=%d is not a power of two", aligned_new_threshhold); + aligned_new_threshhold = 1; + } + if (aligned_new_threshhold == -1) + aligned_new_threshhold = (cxx_dialect >= cxx1z) ? 1 : 0; + if (aligned_new_threshhold == 1) + aligned_new_threshhold = max_align_t_align () / BITS_PER_UNIT; + { tree newattrs, extvisattr; tree newtype, deltype; @@ -4199,6 +4210,47 @@ cxx_init_decl_processing (void) push_cp_library_fn (VEC_DELETE_EXPR, deltype, ECF_NOTHROW); } + if (aligned_new_threshhold) + { + push_namespace (std_identifier); + tree align_id = get_identifier ("align_val_t"); + align_type_node = start_enum (align_id, NULL_TREE, size_type_node, + NULL_TREE, /*scoped*/true, NULL); + pop_namespace (); + + /* operator new (size_t, align_val_t); */ + newtype = build_function_type_list (ptr_type_node, size_type_node, + align_type_node, NULL_TREE); + newtype = cp_build_type_attribute_variant (newtype, newattrs); + newtype = build_exception_variant (newtype, new_eh_spec); + opnew = push_cp_library_fn (NEW_EXPR, newtype, 0); + DECL_IS_MALLOC (opnew) = 1; + DECL_IS_OPERATOR_NEW (opnew) = 1; + opnew = push_cp_library_fn (VEC_NEW_EXPR, newtype, 0); + DECL_IS_MALLOC (opnew) = 1; + DECL_IS_OPERATOR_NEW (opnew) = 1; + + /* operator delete (void *, align_val_t); */ + deltype = build_function_type_list (void_type_node, ptr_type_node, + align_type_node, NULL_TREE); + deltype = cp_build_type_attribute_variant (deltype, extvisattr); + deltype = build_exception_variant (deltype, empty_except_spec); + push_cp_library_fn (DELETE_EXPR, deltype, ECF_NOTHROW); + push_cp_library_fn (VEC_DELETE_EXPR, deltype, ECF_NOTHROW); + + if (flag_sized_deallocation) + { + /* operator delete (void *, size_t, align_val_t); */ + deltype = build_function_type_list (void_type_node, ptr_type_node, + size_type_node, align_type_node, + NULL_TREE); + deltype = cp_build_type_attribute_variant (deltype, extvisattr); + deltype = build_exception_variant (deltype, empty_except_spec); + push_cp_library_fn (DELETE_EXPR, deltype, ECF_NOTHROW); + push_cp_library_fn (VEC_DELETE_EXPR, deltype, ECF_NOTHROW); + } + } + nullptr_type_node = make_node (NULLPTR_TYPE); TYPE_SIZE (nullptr_type_node) = bitsize_int (GET_MODE_BITSIZE (ptr_mode)); TYPE_SIZE_UNIT (nullptr_type_node) = size_int (GET_MODE_SIZE (ptr_mode)); |