| /* Insert USEs in instructions that require mode switching. |
| This should probably be merged into mode-switching.c . |
| Copyright (C) 2011-2013 Free Software Foundation, Inc. |
| Contributed by Embecosm on behalf of Adapteva, 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 "rtl.h" |
| #include "function.h" |
| #include "emit-rtl.h" |
| #include "tree-pass.h" |
| #include "insn-attr.h" |
| #include "insn-config.h" |
| #include "recog.h" |
| #include "tm_p.h" |
| #include "df.h" |
| |
| #ifndef TARGET_INSERT_MODE_SWITCH_USE |
| #define TARGET_INSERT_MODE_SWITCH_USE NULL |
| #endif |
| |
| static unsigned int |
| insert_uses (void) |
| { |
| static const int num_modes[] = NUM_MODES_FOR_MODE_SWITCHING; |
| #define N_ENTITIES ARRAY_SIZE (num_modes) |
| int e; |
| void (*target_insert_mode_switch_use) (rtx insn, int, int) |
| = TARGET_INSERT_MODE_SWITCH_USE; |
| |
| for (e = N_ENTITIES - 1; e >= 0; e--) |
| { |
| int no_mode = num_modes[e]; |
| rtx insn; |
| int mode; |
| |
| if (!OPTIMIZE_MODE_SWITCHING (e)) |
| continue; |
| for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) |
| { |
| if (!INSN_P (insn)) |
| continue; |
| mode = MODE_NEEDED (e, insn); |
| if (mode == no_mode) |
| continue; |
| if (target_insert_mode_switch_use) |
| { |
| target_insert_mode_switch_use (insn, e, mode); |
| df_insn_rescan (insn); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| struct rtl_opt_pass pass_mode_switch_use = |
| { |
| { |
| RTL_PASS, |
| "mode_switch_use", /* name */ |
| OPTGROUP_NONE, /* optinfo_flags */ |
| NULL, /* gate */ |
| insert_uses, /* execute */ |
| NULL, /* sub */ |
| NULL, /* next */ |
| 0, /* static_pass_number */ |
| TV_NONE, /* tv_id */ |
| 0, /* properties_required */ |
| 0, /* properties_provided */ |
| 0, /* properties_destroyed */ |
| 0, /* todo_flags_start */ |
| 0, /* todo_flags_finish */ |
| } |
| }; |