projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| feeeff5c JR |
1 | /* Insert USEs in instructions that require mode switching. |
| 2 | This should probably be merged into mode-switching.c . | |
| d1e082c2 | 3 | Copyright (C) 2011-2013 Free Software Foundation, Inc. |
| feeeff5c JR |
4 | Contributed by Embecosm on behalf of Adapteva, Inc. |
| 5 | ||
| 6 | This file is part of GCC. | |
| 7 | ||
| 8 | GCC is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 3, or (at your option) | |
| 11 | any later version. | |
| 12 | ||
| 13 | GCC is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | GNU General Public License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License | |
| 19 | along with GCC; see the file COPYING3. If not see | |
| 20 | <http://www.gnu.org/licenses/>. */ | |
| 21 | ||
| 22 | #include "config.h" | |
| 23 | #include "system.h" | |
| 24 | #include "coretypes.h" | |
| 25 | #include "tm.h" | |
| 26 | #include "rtl.h" | |
| 27 | #include "function.h" | |
| 28 | #include "emit-rtl.h" | |
| 29 | #include "tree-pass.h" | |
| 30 | #include "insn-attr.h" | |
| 31 | #include "insn-config.h" | |
| 32 | #include "recog.h" | |
| 33 | #include "tm_p.h" | |
| 34 | #include "df.h" | |
| 35 | ||
| 36 | #ifndef TARGET_INSERT_MODE_SWITCH_USE | |
| 37 | #define TARGET_INSERT_MODE_SWITCH_USE NULL | |
| 38 | #endif | |
| 39 | ||
| 40 | static unsigned int | |
| 41 | insert_uses (void) | |
| 42 | { | |
| 43 | static const int num_modes[] = NUM_MODES_FOR_MODE_SWITCHING; | |
| 44 | #define N_ENTITIES ARRAY_SIZE (num_modes) | |
| 45 | int e; | |
| 46 | void (*target_insert_mode_switch_use) (rtx insn, int, int) | |
| 47 | = TARGET_INSERT_MODE_SWITCH_USE; | |
| 48 | ||
| 49 | for (e = N_ENTITIES - 1; e >= 0; e--) | |
| 50 | { | |
| 51 | int no_mode = num_modes[e]; | |
| 52 | rtx insn; | |
| 53 | int mode; | |
| 54 | ||
| 55 | if (!OPTIMIZE_MODE_SWITCHING (e)) | |
| 56 | continue; | |
| 57 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) | |
| 58 | { | |
| 59 | if (!INSN_P (insn)) | |
| 60 | continue; | |
| 61 | mode = MODE_NEEDED (e, insn); | |
| 62 | if (mode == no_mode) | |
| 63 | continue; | |
| 64 | if (target_insert_mode_switch_use) | |
| 65 | { | |
| 66 | target_insert_mode_switch_use (insn, e, mode); | |
| 67 | df_insn_rescan (insn); | |
| 68 | } | |
| 69 | } | |
| 70 | } | |
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 74 | struct rtl_opt_pass pass_mode_switch_use = | |
| 75 | { | |
| 76 | { | |
| 77 | RTL_PASS, | |
| 78 | "mode_switch_use", /* name */ | |
| 53750ab0 | 79 | OPTGROUP_NONE, /* optinfo_flags */ |
| feeeff5c JR |
80 | NULL, /* gate */ |
| 81 | insert_uses, /* execute */ | |
| 82 | NULL, /* sub */ | |
| 83 | NULL, /* next */ | |
| 84 | 0, /* static_pass_number */ | |
| 85 | TV_NONE, /* tv_id */ | |
| 86 | 0, /* properties_required */ | |
| 87 | 0, /* properties_provided */ | |
| 88 | 0, /* properties_destroyed */ | |
| 89 | 0, /* todo_flags_start */ | |
| 90 | 0, /* todo_flags_finish */ | |
| 91 | } | |
| 92 | }; |