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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/* Common hooks for ARM.
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Copyright (C) 1991-2013 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm_p.h"
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#include "common/common-target.h"
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#include "common/common-target-def.h"
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#include "opts.h"
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#include "flags.h"
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/* Set default optimization options. */
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static const struct default_options arm_option_optimization_table[] =
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{
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/* Enable section anchors by default at -O1 or higher. */
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{ OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 },
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{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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{ OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
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{ OPT_LEVELS_NONE, 0, NULL, 0 }
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};
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/* Implement TARGET_EXCEPT_UNWIND_INFO. */
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enum unwind_info_type
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arm_except_unwind_info (struct gcc_options *opts)
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{
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/* Honor the --enable-sjlj-exceptions configure switch. */
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#ifdef CONFIG_SJLJ_EXCEPTIONS
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if (CONFIG_SJLJ_EXCEPTIONS)
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return UI_SJLJ;
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#endif
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if (ARM_DWARF_UNWIND_TABLES)
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return UI_DWARF2;
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/* If not using ARM EABI unwind tables... */
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if (ARM_UNWIND_INFO)
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{
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/* For simplicity elsewhere in this file, indicate that all unwind
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info is disabled if we're not emitting unwind tables. */
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if (!opts->x_flag_exceptions && !opts->x_flag_unwind_tables)
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return UI_NONE;
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else
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return UI_TARGET;
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}
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/* ... we use sjlj exceptions for backwards compatibility. */
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return UI_SJLJ;
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}
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#undef TARGET_DEFAULT_TARGET_FLAGS
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#define TARGET_DEFAULT_TARGET_FLAGS (TARGET_DEFAULT | MASK_SCHED_PROLOG)
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#undef TARGET_OPTION_OPTIMIZATION_TABLE
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#define TARGET_OPTION_OPTIMIZATION_TABLE arm_option_optimization_table
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#undef TARGET_EXCEPT_UNWIND_INFO
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#define TARGET_EXCEPT_UNWIND_INFO arm_except_unwind_info
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struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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