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Commit | Line | Data |
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feeeff5c JR |
1 | /* Insert USEs in instructions that require mode switching. |
2 | This should probably be merged into mode-switching.c . | |
5624e564 | 3 | Copyright (C) 2011-2015 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" | |
c7131fb2 | 25 | #include "backend.h" |
feeeff5c | 26 | #include "rtl.h" |
c7131fb2 | 27 | #include "df.h" |
e11c4407 | 28 | #include "tm_p.h" |
feeeff5c JR |
29 | #include "emit-rtl.h" |
30 | #include "tree-pass.h" | |
31 | #include "insn-attr.h" | |
feeeff5c JR |
32 | |
33 | #ifndef TARGET_INSERT_MODE_SWITCH_USE | |
34 | #define TARGET_INSERT_MODE_SWITCH_USE NULL | |
35 | #endif | |
36 | ||
37 | static unsigned int | |
38 | insert_uses (void) | |
39 | { | |
40 | static const int num_modes[] = NUM_MODES_FOR_MODE_SWITCHING; | |
41 | #define N_ENTITIES ARRAY_SIZE (num_modes) | |
42 | int e; | |
84034c69 | 43 | void (*target_insert_mode_switch_use) (rtx_insn *insn, int, int) |
feeeff5c JR |
44 | = TARGET_INSERT_MODE_SWITCH_USE; |
45 | ||
46 | for (e = N_ENTITIES - 1; e >= 0; e--) | |
47 | { | |
48 | int no_mode = num_modes[e]; | |
bcfba653 | 49 | rtx_insn *insn; |
feeeff5c JR |
50 | int mode; |
51 | ||
52 | if (!OPTIMIZE_MODE_SWITCHING (e)) | |
53 | continue; | |
54 | for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) | |
55 | { | |
56 | if (!INSN_P (insn)) | |
57 | continue; | |
06b90602 | 58 | mode = epiphany_mode_needed (e, insn); |
feeeff5c JR |
59 | if (mode == no_mode) |
60 | continue; | |
61 | if (target_insert_mode_switch_use) | |
62 | { | |
63 | target_insert_mode_switch_use (insn, e, mode); | |
64 | df_insn_rescan (insn); | |
65 | } | |
66 | } | |
67 | } | |
68 | return 0; | |
69 | } | |
70 | ||
27a4cd48 DM |
71 | namespace { |
72 | ||
73 | const pass_data pass_data_mode_switch_use = | |
feeeff5c | 74 | { |
27a4cd48 DM |
75 | RTL_PASS, /* type */ |
76 | "mode_switch_use", /* name */ | |
77 | OPTGROUP_NONE, /* optinfo_flags */ | |
27a4cd48 DM |
78 | TV_NONE, /* tv_id */ |
79 | 0, /* properties_required */ | |
80 | 0, /* properties_provided */ | |
81 | 0, /* properties_destroyed */ | |
82 | 0, /* todo_flags_start */ | |
83 | 0, /* todo_flags_finish */ | |
feeeff5c | 84 | }; |
27a4cd48 DM |
85 | |
86 | class pass_mode_switch_use : public rtl_opt_pass | |
87 | { | |
88 | public: | |
89 | pass_mode_switch_use(gcc::context *ctxt) | |
90 | : rtl_opt_pass(pass_data_mode_switch_use, ctxt) | |
91 | {} | |
92 | ||
93 | /* opt_pass methods: */ | |
be55bfe6 | 94 | virtual unsigned int execute (function *) { return insert_uses (); } |
27a4cd48 DM |
95 | |
96 | }; // class pass_mode_switch_use | |
97 | ||
98 | } // anon namespace | |
99 | ||
100 | rtl_opt_pass * | |
101 | make_pass_mode_switch_use (gcc::context *ctxt) | |
102 | { | |
103 | return new pass_mode_switch_use (ctxt); | |
104 | } |