1 /* Common hooks for Tensilica's Xtensa architecture. 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #include "config.h" 21 #include "system.h" 22 #include "coretypes.h" 23 #include "tm.h" 24 #include "common/common-target.h" 25 #include "common/common-target-def.h" 26 27 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ 28 29 static const struct default_options xtensa_option_optimization_table[] = 30 { 31 /* Reordering blocks for Xtensa is not a good idea unless the 32 compiler understands the range of conditional branches. 33 Currently all branch relaxation for Xtensa is handled in the 34 assembler, so GCC cannot do a good job of reordering blocks. 35 Do not enable reordering unless it is explicitly requested. */ 36 { OPT_LEVELS_ALL, OPT_freorder_blocks, NULL, 0 }, 37 { OPT_LEVELS_NONE, 0, NULL, 0 } 38 }; 39 40 #undef TARGET_DEFAULT_TARGET_FLAGS 41 #define TARGET_DEFAULT_TARGET_FLAGS (TARGET_DEFAULT) 42 #undef TARGET_OPTION_OPTIMIZATION_TABLE 43 #define TARGET_OPTION_OPTIMIZATION_TABLE xtensa_option_optimization_table 44 45 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 46