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93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/* Insert USEs in instructions that require mode switching.
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This should probably be merged into mode-switching.c .
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Copyright (C) 2011-2013 Free Software Foundation, Inc.
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Contributed by Embecosm on behalf of Adapteva, 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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public 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 "rtl.h"
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#include "function.h"
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#include "emit-rtl.h"
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#include "tree-pass.h"
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#include "insn-attr.h"
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#include "insn-config.h"
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#include "recog.h"
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#include "tm_p.h"
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#include "df.h"
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#ifndef TARGET_INSERT_MODE_SWITCH_USE
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#define TARGET_INSERT_MODE_SWITCH_USE NULL
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#endif
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static unsigned int
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insert_uses (void)
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{
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static const int num_modes[] = NUM_MODES_FOR_MODE_SWITCHING;
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#define N_ENTITIES ARRAY_SIZE (num_modes)
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int e;
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void (*target_insert_mode_switch_use) (rtx insn, int, int)
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= TARGET_INSERT_MODE_SWITCH_USE;
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for (e = N_ENTITIES - 1; e >= 0; e--)
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{
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int no_mode = num_modes[e];
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rtx insn;
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int mode;
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if (!OPTIMIZE_MODE_SWITCHING (e))
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continue;
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for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
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{
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if (!INSN_P (insn))
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continue;
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mode = MODE_NEEDED (e, insn);
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if (mode == no_mode)
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continue;
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if (target_insert_mode_switch_use)
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{
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target_insert_mode_switch_use (insn, e, mode);
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df_insn_rescan (insn);
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}
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}
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}
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return 0;
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}
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struct rtl_opt_pass pass_mode_switch_use =
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{
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{
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RTL_PASS,
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"mode_switch_use", /* name */
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OPTGROUP_NONE, /* optinfo_flags */
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NULL, /* gate */
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insert_uses, /* execute */
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NULL, /* sub */
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NULL, /* next */
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0, /* static_pass_number */
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TV_NONE, /* tv_id */
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0, /* properties_required */
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0, /* properties_provided */
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0, /* properties_destroyed */
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0, /* todo_flags_start */
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0, /* todo_flags_finish */
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}
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};
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