diff options
Diffstat (limited to 'gcc-4.9/gcc/common/config/xtensa/xtensa-common.c')
-rw-r--r-- | gcc-4.9/gcc/common/config/xtensa/xtensa-common.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/common/config/xtensa/xtensa-common.c b/gcc-4.9/gcc/common/config/xtensa/xtensa-common.c new file mode 100644 index 000000000..f5f200a66 --- /dev/null +++ b/gcc-4.9/gcc/common/config/xtensa/xtensa-common.c @@ -0,0 +1,46 @@ +/* Common hooks for Tensilica's Xtensa architecture. + Copyright (C) 2001-2014 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tm.h" +#include "common/common-target.h" +#include "common/common-target-def.h" + +/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ + +static const struct default_options xtensa_option_optimization_table[] = + { + { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, + /* Reordering blocks for Xtensa is not a good idea unless the + compiler understands the range of conditional branches. + Currently all branch relaxation for Xtensa is handled in the + assembler, so GCC cannot do a good job of reordering blocks. + Do not enable reordering unless it is explicitly requested. */ + { OPT_LEVELS_ALL, OPT_freorder_blocks, NULL, 0 }, + { OPT_LEVELS_NONE, 0, NULL, 0 } + }; + +#undef TARGET_DEFAULT_TARGET_FLAGS +#define TARGET_DEFAULT_TARGET_FLAGS (TARGET_DEFAULT) +#undef TARGET_OPTION_OPTIMIZATION_TABLE +#define TARGET_OPTION_OPTIMIZATION_TABLE xtensa_option_optimization_table + +struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; |