From 680c60feb43035aa3b1ee6ac3bcc9055bf50fd5e Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Sat, 25 Feb 2017 09:18:24 +0100 Subject: re PR debug/77589 (fortran: Missing DW_AT_byte_stride for an array record field selection) PR debug/77589 include/ * dwarf2.def (DW_OP_GNU_variable_value): New opcode. gcc/ * dwarf2out.c (struct dw_loc_list_struct): Add noted_variable_value bitfield. (size_of_loc_descr): Handle DW_OP_GNU_variable_value. (output_loc_operands): Handle DW_OP_call_ref and DW_OP_GNU_variable_value. (struct variable_value_struct): New type. (struct variable_value_hasher): Likewise. (variable_value_hash): New variable. (string_types): Remove. (copy_loc_descr): New function. (add_loc_descr_to_each): Clarify comment. Use copy_loc_descr. (prepend_loc_descr_to_each): New function. (add_loc_list): Fix comment typo. Use prepend_loc_descr_to_each instead of add_loc_descr_to_each if the first argument is single location list and the second has multiple. (resolve_args_picking_1): Handle DW_OP_GNU_variable_value. (loc_list_from_tree_1): For early_dwarf, emit DW_OP_GNU_variable_value when looking for variable value which doesn't have other location info. (loc_list_from_tree): Formatting fix. (gen_array_type_die): Simplify DW_AT_string_length handling. (adjust_string_types): Remove. (gen_subprogram_die): Don't call adjust_string_types nor test/set string_types. Call resolve_variable_values. (prune_unused_types_walk_loc_descr): Handle DW_OP_GNU_variable_value. (resolve_addr_in_expr): Likewise. Add A argument. (copy_deref_exprloc): Remove deref argument. Adjust for the original expression being DW_OP_GNU_variable_value with optionally DW_OP_stack_value after it instead of DW_OP_call4 with DW_OP_deref optionally after it. (optimize_string_length): Rework for DW_OP_GNU_variable_value. (resolve_addr): Adjust optimize_string_length and resolve_addr_in_expr callers. Set remove_AT_byte_size if removing DW_AT_string_length. (variable_value_hasher::hash, variable_value_hasher::equal): New methods. (resolve_variable_value_in_expr, resolve_variable_value, resolve_variable_values, note_variable_value_in_expr, note_variable_value): New functions. (dwarf2out_early_finish): Call note_variable_value on all toplevel DIEs. From-SVN: r245733 --- include/ChangeLog | 5 +++++ include/dwarf2.def | 3 +++ 2 files changed, 8 insertions(+) (limited to 'include') diff --git a/include/ChangeLog b/include/ChangeLog index 43b2071..2e927cb 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,8 @@ +2017-02-25 Jakub Jelinek + + PR debug/77589 + * dwarf2.def (DW_OP_GNU_variable_value): New opcode. + 2017-01-30 Alexandre Oliva Introduce C++ support in libcc1. diff --git a/include/dwarf2.def b/include/dwarf2.def index ddadacc..ea6194e 100644 --- a/include/dwarf2.def +++ b/include/dwarf2.def @@ -675,6 +675,9 @@ DW_OP (DW_OP_GNU_parameter_ref, 0xfa) /* Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission. */ DW_OP (DW_OP_GNU_addr_index, 0xfb) DW_OP (DW_OP_GNU_const_index, 0xfc) +/* The GNU variable value extension. + See http://dwarfstd.org/ShowIssue.php?issue=161109.2 . */ +DW_OP (DW_OP_GNU_variable_value, 0xfd) /* HP extensions. */ DW_OP_DUP (DW_OP_HP_unknown, 0xe0) /* Ouch, the same as GNU_push_tls_address. */ DW_OP (DW_OP_HP_is_value, 0xe1) -- cgit v1.1