1 /* brig-arg-block-handler.cc -- brig arg block start/end directive handling 2 Copyright (C) 2016-2020 Free Software Foundation, Inc. 3 Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com> 4 for General Processor Tech. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 3, or (at your option) any later 11 version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #include "brig-code-entry-handler.h" 23 #include "tree-iterator.h" 24 #include "system.h" 25 #include "errors.h" 26 27 #include "tree-pretty-print.h" 28 #include "print-tree.h" 29 30 size_t operator ()(const BrigBase * base)31brig_directive_arg_block_handler::operator () (const BrigBase *base) 32 { 33 if (base->kind == BRIG_KIND_DIRECTIVE_ARG_BLOCK_START) 34 { 35 /* Initiate a new code block for the call site. */ 36 tree stmt_list = alloc_stmt_list (); 37 tree bind_expr 38 = build3 (BIND_EXPR, void_type_node, NULL, stmt_list, NULL); 39 tree block = make_node (BLOCK); 40 BIND_EXPR_BLOCK (bind_expr) = block; 41 static int block_id = 0; 42 BLOCK_NUMBER (block) = block_id++; 43 TREE_USED (block) = 1; 44 tree m_parentblock = DECL_INITIAL (m_parent.m_cf->m_func_decl); 45 BLOCK_SUPERCONTEXT (block) = m_parentblock; 46 47 chainon (BLOCK_SUBBLOCKS (m_parentblock), block); 48 49 m_parent.m_cf->m_current_bind_expr = bind_expr; 50 m_parent.m_cf->m_generating_arg_block = true; 51 } 52 else if (base->kind == BRIG_KIND_DIRECTIVE_ARG_BLOCK_END) 53 { 54 /* Restore the used bind expression back to the function 55 scope. */ 56 tree new_bind_expr = m_parent.m_cf->m_current_bind_expr; 57 m_parent.m_cf->m_current_bind_expr 58 = DECL_SAVED_TREE (m_parent.m_cf->m_func_decl); 59 m_parent.m_cf->append_statement (new_bind_expr); 60 m_parent.m_cf->m_generating_arg_block = false; 61 } 62 else 63 gcc_unreachable (); 64 65 return base->byteCount; 66 } 67