]>
Commit | Line | Data |
---|---|---|
f0efc7aa DN |
1 | /* Routines for emitting GIMPLE to a file stream. |
2 | ||
d1e082c2 | 3 | Copyright (C) 2011-2013 Free Software Foundation, Inc. |
f0efc7aa DN |
4 | Contributed by Diego Novillo <dnovillo@google.com> |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 3, or (at your option) any later | |
11 | version. | |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | 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 "tree.h" | |
7a300452 | 26 | #include "tree-ssa.h" |
f0efc7aa DN |
27 | #include "data-streamer.h" |
28 | #include "gimple-streamer.h" | |
29 | #include "lto-streamer.h" | |
b9393656 | 30 | #include "tree-streamer.h" |
89ab31c1 | 31 | #include "value-prof.h" |
f0efc7aa DN |
32 | |
33 | /* Output PHI function PHI to the main stream in OB. */ | |
34 | ||
35 | static void | |
36 | output_phi (struct output_block *ob, gimple phi) | |
37 | { | |
38 | unsigned i, len = gimple_phi_num_args (phi); | |
39 | ||
412288f1 DN |
40 | streamer_write_record_start (ob, lto_gimple_code_to_tag (GIMPLE_PHI)); |
41 | streamer_write_uhwi (ob, SSA_NAME_VERSION (PHI_RESULT (phi))); | |
f0efc7aa DN |
42 | |
43 | for (i = 0; i < len; i++) | |
44 | { | |
b9393656 | 45 | stream_write_tree (ob, gimple_phi_arg_def (phi, i), true); |
412288f1 | 46 | streamer_write_uhwi (ob, gimple_phi_arg_edge (phi, i)->src->index); |
7cb7d208 RB |
47 | bitpack_d bp = bitpack_create (ob->main_stream); |
48 | stream_output_location (ob, &bp, gimple_phi_arg_location (phi, i)); | |
49 | streamer_write_bitpack (&bp); | |
f0efc7aa DN |
50 | } |
51 | } | |
52 | ||
53 | ||
54 | /* Emit statement STMT on the main stream of output block OB. */ | |
55 | ||
56 | static void | |
57 | output_gimple_stmt (struct output_block *ob, gimple stmt) | |
58 | { | |
59 | unsigned i; | |
60 | enum gimple_code code; | |
61 | enum LTO_tags tag; | |
62 | struct bitpack_d bp; | |
89ab31c1 | 63 | histogram_value hist; |
f0efc7aa DN |
64 | |
65 | /* Emit identifying tag. */ | |
66 | code = gimple_code (stmt); | |
67 | tag = lto_gimple_code_to_tag (code); | |
412288f1 | 68 | streamer_write_record_start (ob, tag); |
f0efc7aa DN |
69 | |
70 | /* Emit the tuple header. */ | |
71 | bp = bitpack_create (ob->main_stream); | |
72 | bp_pack_var_len_unsigned (&bp, gimple_num_ops (stmt)); | |
73 | bp_pack_value (&bp, gimple_no_warning_p (stmt), 1); | |
74 | if (is_gimple_assign (stmt)) | |
75 | bp_pack_value (&bp, gimple_assign_nontemporal_move_p (stmt), 1); | |
76 | bp_pack_value (&bp, gimple_has_volatile_ops (stmt), 1); | |
89ab31c1 JH |
77 | hist = gimple_histogram_value (cfun, stmt); |
78 | bp_pack_value (&bp, hist != NULL, 1); | |
f0efc7aa | 79 | bp_pack_var_len_unsigned (&bp, stmt->gsbase.subcode); |
f0efc7aa DN |
80 | |
81 | /* Emit location information for the statement. */ | |
7cb7d208 RB |
82 | stream_output_location (ob, &bp, LOCATION_LOCUS (gimple_location (stmt))); |
83 | streamer_write_bitpack (&bp); | |
f0efc7aa DN |
84 | |
85 | /* Emit the lexical block holding STMT. */ | |
b9393656 | 86 | stream_write_tree (ob, gimple_block (stmt), true); |
f0efc7aa DN |
87 | |
88 | /* Emit the operands. */ | |
89 | switch (gimple_code (stmt)) | |
90 | { | |
91 | case GIMPLE_RESX: | |
412288f1 | 92 | streamer_write_hwi (ob, gimple_resx_region (stmt)); |
f0efc7aa DN |
93 | break; |
94 | ||
95 | case GIMPLE_EH_MUST_NOT_THROW: | |
b9393656 | 96 | stream_write_tree (ob, gimple_eh_must_not_throw_fndecl (stmt), true); |
f0efc7aa DN |
97 | break; |
98 | ||
99 | case GIMPLE_EH_DISPATCH: | |
412288f1 | 100 | streamer_write_hwi (ob, gimple_eh_dispatch_region (stmt)); |
f0efc7aa DN |
101 | break; |
102 | ||
103 | case GIMPLE_ASM: | |
412288f1 DN |
104 | streamer_write_uhwi (ob, gimple_asm_ninputs (stmt)); |
105 | streamer_write_uhwi (ob, gimple_asm_noutputs (stmt)); | |
106 | streamer_write_uhwi (ob, gimple_asm_nclobbers (stmt)); | |
107 | streamer_write_uhwi (ob, gimple_asm_nlabels (stmt)); | |
108 | streamer_write_string (ob, ob->main_stream, gimple_asm_string (stmt), | |
109 | true); | |
f0efc7aa DN |
110 | /* Fallthru */ |
111 | ||
112 | case GIMPLE_ASSIGN: | |
113 | case GIMPLE_CALL: | |
114 | case GIMPLE_RETURN: | |
115 | case GIMPLE_SWITCH: | |
116 | case GIMPLE_LABEL: | |
117 | case GIMPLE_COND: | |
118 | case GIMPLE_GOTO: | |
119 | case GIMPLE_DEBUG: | |
120 | for (i = 0; i < gimple_num_ops (stmt); i++) | |
121 | { | |
122 | tree op = gimple_op (stmt, i); | |
976a81ee | 123 | tree *basep = NULL; |
f0efc7aa DN |
124 | /* Wrap all uses of non-automatic variables inside MEM_REFs |
125 | so that we do not have to deal with type mismatches on | |
126 | merged symbols during IL read in. The first operand | |
127 | of GIMPLE_DEBUG must be a decl, not MEM_REF, though. */ | |
128 | if (op && (i || !is_gimple_debug (stmt))) | |
129 | { | |
976a81ee | 130 | basep = &op; |
f0efc7aa DN |
131 | while (handled_component_p (*basep)) |
132 | basep = &TREE_OPERAND (*basep, 0); | |
133 | if (TREE_CODE (*basep) == VAR_DECL | |
134 | && !auto_var_in_fn_p (*basep, current_function_decl) | |
135 | && !DECL_REGISTER (*basep)) | |
136 | { | |
137 | bool volatilep = TREE_THIS_VOLATILE (*basep); | |
138 | *basep = build2 (MEM_REF, TREE_TYPE (*basep), | |
139 | build_fold_addr_expr (*basep), | |
140 | build_int_cst (build_pointer_type | |
141 | (TREE_TYPE (*basep)), 0)); | |
142 | TREE_THIS_VOLATILE (*basep) = volatilep; | |
143 | } | |
976a81ee RB |
144 | else |
145 | basep = NULL; | |
f0efc7aa | 146 | } |
b9393656 | 147 | stream_write_tree (ob, op, true); |
976a81ee RB |
148 | /* Restore the original base if we wrapped it inside a MEM_REF. */ |
149 | if (basep) | |
150 | *basep = TREE_OPERAND (TREE_OPERAND (*basep, 0), 0); | |
f0efc7aa DN |
151 | } |
152 | if (is_gimple_call (stmt)) | |
153 | { | |
154 | if (gimple_call_internal_p (stmt)) | |
412288f1 DN |
155 | streamer_write_enum (ob->main_stream, internal_fn, |
156 | IFN_LAST, gimple_call_internal_fn (stmt)); | |
f0efc7aa | 157 | else |
b9393656 | 158 | stream_write_tree (ob, gimple_call_fntype (stmt), true); |
f0efc7aa DN |
159 | } |
160 | break; | |
161 | ||
162 | case GIMPLE_NOP: | |
163 | case GIMPLE_PREDICT: | |
164 | break; | |
165 | ||
57ac2606 AH |
166 | case GIMPLE_TRANSACTION: |
167 | gcc_assert (gimple_transaction_body (stmt) == NULL); | |
168 | stream_write_tree (ob, gimple_transaction_label (stmt), true); | |
169 | break; | |
170 | ||
f0efc7aa DN |
171 | default: |
172 | gcc_unreachable (); | |
173 | } | |
89ab31c1 JH |
174 | if (hist) |
175 | stream_out_histogram_value (ob, hist); | |
f0efc7aa DN |
176 | } |
177 | ||
178 | ||
179 | /* Output a basic block BB to the main stream in OB for this FN. */ | |
180 | ||
181 | void | |
182 | output_bb (struct output_block *ob, basic_block bb, struct function *fn) | |
183 | { | |
184 | gimple_stmt_iterator bsi = gsi_start_bb (bb); | |
185 | ||
412288f1 DN |
186 | streamer_write_record_start (ob, |
187 | (!gsi_end_p (bsi)) || phi_nodes (bb) | |
188 | ? LTO_bb1 | |
189 | : LTO_bb0); | |
f0efc7aa | 190 | |
412288f1 | 191 | streamer_write_uhwi (ob, bb->index); |
89ab31c1 | 192 | streamer_write_gcov_count (ob, bb->count); |
412288f1 DN |
193 | streamer_write_hwi (ob, bb->frequency); |
194 | streamer_write_hwi (ob, bb->flags); | |
f0efc7aa DN |
195 | |
196 | if (!gsi_end_p (bsi) || phi_nodes (bb)) | |
197 | { | |
198 | /* Output the statements. The list of statements is terminated | |
199 | with a zero. */ | |
200 | for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
201 | { | |
202 | int region; | |
203 | gimple stmt = gsi_stmt (bsi); | |
204 | ||
205 | output_gimple_stmt (ob, stmt); | |
206 | ||
207 | /* Emit the EH region holding STMT. */ | |
208 | region = lookup_stmt_eh_lp_fn (fn, stmt); | |
209 | if (region != 0) | |
210 | { | |
412288f1 DN |
211 | streamer_write_record_start (ob, LTO_eh_region); |
212 | streamer_write_hwi (ob, region); | |
f0efc7aa DN |
213 | } |
214 | else | |
412288f1 | 215 | streamer_write_record_start (ob, LTO_null); |
f0efc7aa DN |
216 | } |
217 | ||
412288f1 | 218 | streamer_write_record_start (ob, LTO_null); |
f0efc7aa DN |
219 | |
220 | for (bsi = gsi_start_phis (bb); !gsi_end_p (bsi); gsi_next (&bsi)) | |
221 | { | |
222 | gimple phi = gsi_stmt (bsi); | |
223 | ||
224 | /* Only emit PHIs for gimple registers. PHI nodes for .MEM | |
225 | will be filled in on reading when the SSA form is | |
226 | updated. */ | |
ea057359 | 227 | if (!virtual_operand_p (gimple_phi_result (phi))) |
f0efc7aa DN |
228 | output_phi (ob, phi); |
229 | } | |
230 | ||
412288f1 | 231 | streamer_write_record_start (ob, LTO_null); |
f0efc7aa DN |
232 | } |
233 | } |