Mercurial > hg > CbC > CbC_gcc
annotate gcc/ipa-inline.c @ 88:f214c1d5b862
merge 89
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 20 Dec 2011 18:53:46 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Inlining decision heuristics. |
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2 Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011 |
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3 Free Software Foundation, Inc. |
| 0 | 4 Contributed by Jan Hubicka |
| 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 /* Inlining decision heuristics | |
| 23 | |
| 24 We separate inlining decisions from the inliner itself and store it | |
| 25 inside callgraph as so called inline plan. Refer to cgraph.c | |
| 26 documentation about particular representation of inline plans in the | |
| 27 callgraph. | |
| 28 | |
| 29 There are three major parts of this file: | |
| 30 | |
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31 cgraph_mark_inline_edge implementation |
| 0 | 32 |
| 33 This function allows to mark given call inline and performs necessary | |
| 34 modifications of cgraph (production of the clones and updating overall | |
| 35 statistics) | |
| 36 | |
| 37 inlining heuristics limits | |
| 38 | |
| 39 These functions allow to check that particular inlining is allowed | |
| 40 by the limits specified by user (allowed function growth, overall unit | |
| 41 growth and so on). | |
| 42 | |
| 43 inlining heuristics | |
| 44 | |
| 45 This is implementation of IPA pass aiming to get as much of benefit | |
| 46 from inlining obeying the limits checked above. | |
| 47 | |
| 48 The implementation of particular heuristics is separated from | |
| 49 the rest of code to make it easier to replace it with more complicated | |
| 50 implementation in the future. The rest of inlining code acts as a | |
| 51 library aimed to modify the callgraph and verify that the parameters | |
| 52 on code size growth fits. | |
| 53 | |
| 54 To mark given call inline, use cgraph_mark_inline function, the | |
| 55 verification is performed by cgraph_default_inline_p and | |
| 56 cgraph_check_inline_limits. | |
| 57 | |
| 58 The heuristics implements simple knapsack style algorithm ordering | |
| 59 all functions by their "profitability" (estimated by code size growth) | |
| 60 and inlining them in priority order. | |
| 61 | |
| 62 cgraph_decide_inlining implements heuristics taking whole callgraph | |
| 63 into account, while cgraph_decide_inlining_incrementally considers | |
| 64 only one function at a time and is used by early inliner. | |
| 65 | |
| 66 The inliner itself is split into several passes: | |
| 67 | |
| 68 pass_inline_parameters | |
| 69 | |
| 70 This pass computes local properties of functions that are used by inliner: | |
| 71 estimated function body size, whether function is inlinable at all and | |
| 72 stack frame consumption. | |
| 73 | |
| 74 Before executing any of inliner passes, this local pass has to be applied | |
| 75 to each function in the callgraph (ie run as subpass of some earlier | |
| 76 IPA pass). The results are made out of date by any optimization applied | |
| 77 on the function body. | |
| 78 | |
| 79 pass_early_inlining | |
| 80 | |
| 81 Simple local inlining pass inlining callees into current function. This | |
| 82 pass makes no global whole compilation unit analysis and this when allowed | |
| 83 to do inlining expanding code size it might result in unbounded growth of | |
| 84 whole unit. | |
| 85 | |
| 86 The pass is run during conversion into SSA form. Only functions already | |
| 87 converted into SSA form are inlined, so the conversion must happen in | |
| 88 topological order on the callgraph (that is maintained by pass manager). | |
| 89 The functions after inlining are early optimized so the early inliner sees | |
| 90 unoptimized function itself, but all considered callees are already | |
| 91 optimized allowing it to unfold abstraction penalty on C++ effectively and | |
| 92 cheaply. | |
| 93 | |
| 94 pass_ipa_inline | |
| 95 | |
| 96 This is the main pass implementing simple greedy algorithm to do inlining | |
| 97 of small functions that results in overall growth of compilation unit and | |
| 98 inlining of functions called once. The pass compute just so called inline | |
| 99 plan (representation of inlining to be done in callgraph) and unlike early | |
| 100 inlining it is not performing the inlining itself. | |
| 101 */ | |
| 102 | |
| 103 #include "config.h" | |
| 104 #include "system.h" | |
| 105 #include "coretypes.h" | |
| 106 #include "tm.h" | |
| 107 #include "tree.h" | |
| 108 #include "tree-inline.h" | |
| 109 #include "langhooks.h" | |
| 110 #include "flags.h" | |
| 111 #include "cgraph.h" | |
| 112 #include "diagnostic.h" | |
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113 #include "gimple-pretty-print.h" |
| 0 | 114 #include "timevar.h" |
| 115 #include "params.h" | |
| 116 #include "fibheap.h" | |
| 117 #include "intl.h" | |
| 118 #include "tree-pass.h" | |
| 119 #include "hashtab.h" | |
| 120 #include "coverage.h" | |
| 121 #include "ggc.h" | |
| 122 #include "tree-flow.h" | |
| 123 #include "rtl.h" | |
| 124 #include "ipa-prop.h" | |
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125 #include "except.h" |
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126 |
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127 #define MAX_TIME 1000000000 |
| 0 | 128 |
| 129 /* Mode incremental inliner operate on: | |
| 130 | |
| 131 In ALWAYS_INLINE only functions marked | |
| 132 always_inline are inlined. This mode is used after detecting cycle during | |
| 133 flattening. | |
| 134 | |
| 135 In SIZE mode, only functions that reduce function body size after inlining | |
| 136 are inlined, this is used during early inlining. | |
| 137 | |
| 138 in ALL mode, everything is inlined. This is used during flattening. */ | |
| 139 enum inlining_mode { | |
| 140 INLINE_NONE = 0, | |
| 141 INLINE_ALWAYS_INLINE, | |
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142 INLINE_SIZE_NORECURSIVE, |
| 0 | 143 INLINE_SIZE, |
| 144 INLINE_ALL | |
| 145 }; | |
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146 |
| 0 | 147 static bool |
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148 cgraph_decide_inlining_incrementally (struct cgraph_node *, enum inlining_mode); |
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149 static void cgraph_flatten (struct cgraph_node *node); |
| 0 | 150 |
| 151 | |
| 152 /* Statistics we collect about inlining algorithm. */ | |
| 153 static int ncalls_inlined; | |
| 154 static int nfunctions_inlined; | |
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155 static int overall_size; |
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156 static gcov_type max_count, max_benefit; |
| 0 | 157 |
| 158 /* Holders of ipa cgraph hooks: */ | |
| 159 static struct cgraph_node_hook_list *function_insertion_hook_holder; | |
| 160 | |
| 161 static inline struct inline_summary * | |
| 162 inline_summary (struct cgraph_node *node) | |
| 163 { | |
| 164 return &node->local.inline_summary; | |
| 165 } | |
| 166 | |
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167 /* Estimate self time of the function after inlining WHAT into TO. */ |
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168 |
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169 static int |
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170 cgraph_estimate_time_after_inlining (int frequency, struct cgraph_node *to, |
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171 struct cgraph_node *what) |
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172 { |
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173 gcov_type time = (((gcov_type)what->global.time |
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174 - inline_summary (what)->time_inlining_benefit) |
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175 * frequency + CGRAPH_FREQ_BASE / 2) / CGRAPH_FREQ_BASE |
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176 + to->global.time; |
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177 if (time < 0) |
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178 time = 0; |
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179 if (time > MAX_TIME) |
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180 time = MAX_TIME; |
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181 return time; |
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182 } |
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183 |
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184 /* Estimate self size of the function after inlining WHAT into TO. */ |
| 0 | 185 |
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186 static inline int |
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187 cgraph_estimate_size_after_inlining (struct cgraph_node *to, |
| 0 | 188 struct cgraph_node *what) |
| 189 { | |
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190 int size = ((what->global.size - inline_summary (what)->size_inlining_benefit) |
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191 + to->global.size); |
| 0 | 192 gcc_assert (size >= 0); |
| 193 return size; | |
| 194 } | |
| 195 | |
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196 /* Scale frequency of NODE edges by FREQ_SCALE and increase loop nest |
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197 by NEST. */ |
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198 |
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199 static void |
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200 update_noncloned_frequencies (struct cgraph_node *node, |
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201 int freq_scale, int nest) |
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202 { |
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203 struct cgraph_edge *e; |
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204 |
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205 /* We do not want to ignore high loop nest after freq drops to 0. */ |
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206 if (!freq_scale) |
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207 freq_scale = 1; |
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208 for (e = node->callees; e; e = e->next_callee) |
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209 { |
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210 e->loop_nest += nest; |
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211 e->frequency = e->frequency * (gcov_type) freq_scale / CGRAPH_FREQ_BASE; |
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212 if (e->frequency > CGRAPH_FREQ_MAX) |
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213 e->frequency = CGRAPH_FREQ_MAX; |
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214 if (!e->inline_failed) |
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215 update_noncloned_frequencies (e->callee, freq_scale, nest); |
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216 } |
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217 } |
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218 |
| 0 | 219 /* E is expected to be an edge being inlined. Clone destination node of |
| 220 the edge and redirect it to the new clone. | |
| 221 DUPLICATE is used for bookkeeping on whether we are actually creating new | |
| 222 clones or re-using node originally representing out-of-line function call. | |
| 223 */ | |
| 224 void | |
| 225 cgraph_clone_inlined_nodes (struct cgraph_edge *e, bool duplicate, | |
| 226 bool update_original) | |
| 227 { | |
| 228 HOST_WIDE_INT peak; | |
| 229 | |
| 230 if (duplicate) | |
| 231 { | |
| 232 /* We may eliminate the need for out-of-line copy to be output. | |
| 233 In that case just go ahead and re-use it. */ | |
| 234 if (!e->callee->callers->next_caller | |
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235 /* Recursive inlining never wants the master clone to be overwritten. */ |
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236 && update_original |
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237 /* FIXME: When address is taken of DECL_EXTERNAL function we still can remove its |
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238 offline copy, but we would need to keep unanalyzed node in the callgraph so |
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239 references can point to it. */ |
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240 && !e->callee->address_taken |
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241 && cgraph_can_remove_if_no_direct_calls_p (e->callee) |
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242 /* Inlining might enable more devirtualizing, so we want to remove |
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243 those only after all devirtualizable virtual calls are processed. |
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244 Lacking may edges in callgraph we just preserve them post |
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245 inlining. */ |
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246 && (!DECL_VIRTUAL_P (e->callee->decl) |
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247 || (!DECL_COMDAT (e->callee->decl) && !DECL_EXTERNAL (e->callee->decl))) |
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248 /* Don't reuse if more than one function shares a comdat group. |
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249 If the other function(s) are needed, we need to emit even |
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250 this function out of line. */ |
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251 && !e->callee->same_comdat_group |
| 0 | 252 && !cgraph_new_nodes) |
| 253 { | |
| 254 gcc_assert (!e->callee->global.inlined_to); | |
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255 if (e->callee->analyzed && !DECL_EXTERNAL (e->callee->decl)) |
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256 { |
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257 overall_size -= e->callee->global.size; |
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258 nfunctions_inlined++; |
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259 } |
| 0 | 260 duplicate = false; |
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261 e->callee->local.externally_visible = false; |
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262 update_noncloned_frequencies (e->callee, e->frequency, e->loop_nest); |
| 0 | 263 } |
| 264 else | |
| 265 { | |
| 266 struct cgraph_node *n; | |
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267 n = cgraph_clone_node (e->callee, e->callee->decl, |
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268 e->count, e->frequency, e->loop_nest, |
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269 update_original, NULL); |
| 0 | 270 cgraph_redirect_edge_callee (e, n); |
| 271 } | |
| 272 } | |
| 273 | |
| 274 if (e->caller->global.inlined_to) | |
| 275 e->callee->global.inlined_to = e->caller->global.inlined_to; | |
| 276 else | |
| 277 e->callee->global.inlined_to = e->caller; | |
| 278 e->callee->global.stack_frame_offset | |
| 279 = e->caller->global.stack_frame_offset | |
| 280 + inline_summary (e->caller)->estimated_self_stack_size; | |
| 281 peak = e->callee->global.stack_frame_offset | |
| 282 + inline_summary (e->callee)->estimated_self_stack_size; | |
| 283 if (e->callee->global.inlined_to->global.estimated_stack_size < peak) | |
| 284 e->callee->global.inlined_to->global.estimated_stack_size = peak; | |
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285 cgraph_propagate_frequency (e->callee); |
| 0 | 286 |
| 287 /* Recursively clone all bodies. */ | |
| 288 for (e = e->callee->callees; e; e = e->next_callee) | |
| 289 if (!e->inline_failed) | |
| 290 cgraph_clone_inlined_nodes (e, duplicate, update_original); | |
| 291 } | |
| 292 | |
| 293 /* Mark edge E as inlined and update callgraph accordingly. UPDATE_ORIGINAL | |
| 294 specify whether profile of original function should be updated. If any new | |
| 295 indirect edges are discovered in the process, add them to NEW_EDGES, unless | |
| 296 it is NULL. Return true iff any new callgraph edges were discovered as a | |
| 297 result of inlining. */ | |
| 298 | |
| 299 static bool | |
| 300 cgraph_mark_inline_edge (struct cgraph_edge *e, bool update_original, | |
| 301 VEC (cgraph_edge_p, heap) **new_edges) | |
| 302 { | |
|
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303 int old_size = 0, new_size = 0; |
| 0 | 304 struct cgraph_node *to = NULL, *what; |
| 305 struct cgraph_edge *curr = e; | |
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306 int freq; |
| 0 | 307 |
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308 /* Don't inline inlined edges. */ |
| 0 | 309 gcc_assert (e->inline_failed); |
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310 /* Don't even think of inlining inline clone. */ |
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311 gcc_assert (!e->callee->global.inlined_to); |
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312 |
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313 e->inline_failed = CIF_OK; |
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314 DECL_POSSIBLY_INLINED (e->callee->decl) = true; |
| 0 | 315 |
| 316 cgraph_clone_inlined_nodes (e, true, update_original); | |
| 317 | |
| 318 what = e->callee; | |
| 319 | |
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320 freq = e->frequency; |
| 0 | 321 /* Now update size of caller and all functions caller is inlined into. */ |
| 322 for (;e && !e->inline_failed; e = e->caller->callers) | |
| 323 { | |
| 324 to = e->caller; | |
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325 old_size = e->caller->global.size; |
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326 new_size = cgraph_estimate_size_after_inlining (to, what); |
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327 to->global.size = new_size; |
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328 to->global.time = cgraph_estimate_time_after_inlining (freq, to, what); |
| 0 | 329 } |
| 330 gcc_assert (what->global.inlined_to == to); | |
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331 if (new_size > old_size) |
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332 overall_size += new_size - old_size; |
| 0 | 333 ncalls_inlined++; |
| 334 | |
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335 /* FIXME: We should remove the optimize check after we ensure we never run |
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336 IPA passes when not optimizing. */ |
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337 if (flag_indirect_inlining && optimize) |
| 0 | 338 return ipa_propagate_indirect_call_infos (curr, new_edges); |
| 339 else | |
| 340 return false; | |
| 341 } | |
| 342 | |
| 343 /* Estimate the growth caused by inlining NODE into all callees. */ | |
| 344 | |
| 345 static int | |
| 346 cgraph_estimate_growth (struct cgraph_node *node) | |
| 347 { | |
| 348 int growth = 0; | |
| 349 struct cgraph_edge *e; | |
| 350 bool self_recursive = false; | |
| 351 | |
| 352 if (node->global.estimated_growth != INT_MIN) | |
| 353 return node->global.estimated_growth; | |
| 354 | |
| 355 for (e = node->callers; e; e = e->next_caller) | |
| 356 { | |
| 357 if (e->caller == node) | |
| 358 self_recursive = true; | |
| 359 if (e->inline_failed) | |
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360 growth += (cgraph_estimate_size_after_inlining (e->caller, node) |
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361 - e->caller->global.size); |
| 0 | 362 } |
| 363 | |
| 364 /* ??? Wrong for non-trivially self recursive functions or cases where | |
| 365 we decide to not inline for different reasons, but it is not big deal | |
| 366 as in that case we will keep the body around, but we will also avoid | |
| 367 some inlining. */ | |
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368 if (cgraph_will_be_removed_from_program_if_no_direct_calls (node) |
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369 && !DECL_EXTERNAL (node->decl) && !self_recursive) |
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370 growth -= node->global.size; |
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371 /* COMDAT functions are very often not shared across multiple units since they |
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372 come from various template instantiations. Take this into account. */ |
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373 else if (DECL_COMDAT (node->decl) && !self_recursive |
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374 && cgraph_can_remove_if_no_direct_calls_p (node)) |
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375 growth -= (node->global.size |
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376 * (100 - PARAM_VALUE (PARAM_COMDAT_SHARING_PROBABILITY)) + 50) / 100; |
| 0 | 377 |
| 378 node->global.estimated_growth = growth; | |
| 379 return growth; | |
| 380 } | |
| 381 | |
| 382 /* Return false when inlining WHAT into TO is not good idea | |
|
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383 as it would cause too large growth of function bodies. |
| 0 | 384 When ONE_ONLY is true, assume that only one call site is going |
| 385 to be inlined, otherwise figure out how many call sites in | |
| 386 TO calls WHAT and verify that all can be inlined. | |
| 387 */ | |
| 388 | |
| 389 static bool | |
| 390 cgraph_check_inline_limits (struct cgraph_node *to, struct cgraph_node *what, | |
|
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391 cgraph_inline_failed_t *reason) |
| 0 | 392 { |
| 393 int newsize; | |
| 394 int limit; | |
| 395 HOST_WIDE_INT stack_size_limit, inlined_stack; | |
| 396 | |
| 397 if (to->global.inlined_to) | |
| 398 to = to->global.inlined_to; | |
| 399 | |
| 400 /* When inlining large function body called once into small function, | |
| 401 take the inlined function as base for limiting the growth. */ | |
|
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402 if (inline_summary (to)->self_size > inline_summary(what)->self_size) |
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403 limit = inline_summary (to)->self_size; |
| 0 | 404 else |
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405 limit = inline_summary (what)->self_size; |
| 0 | 406 |
| 407 limit += limit * PARAM_VALUE (PARAM_LARGE_FUNCTION_GROWTH) / 100; | |
| 408 | |
| 409 /* Check the size after inlining against the function limits. But allow | |
| 410 the function to shrink if it went over the limits by forced inlining. */ | |
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411 newsize = cgraph_estimate_size_after_inlining (to, what); |
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412 if (newsize >= to->global.size |
| 0 | 413 && newsize > PARAM_VALUE (PARAM_LARGE_FUNCTION_INSNS) |
| 414 && newsize > limit) | |
| 415 { | |
| 416 if (reason) | |
|
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417 *reason = CIF_LARGE_FUNCTION_GROWTH_LIMIT; |
| 0 | 418 return false; |
| 419 } | |
| 420 | |
| 421 stack_size_limit = inline_summary (to)->estimated_self_stack_size; | |
| 422 | |
| 423 stack_size_limit += stack_size_limit * PARAM_VALUE (PARAM_STACK_FRAME_GROWTH) / 100; | |
| 424 | |
| 425 inlined_stack = (to->global.stack_frame_offset | |
| 426 + inline_summary (to)->estimated_self_stack_size | |
| 427 + what->global.estimated_stack_size); | |
| 428 if (inlined_stack > stack_size_limit | |
| 429 && inlined_stack > PARAM_VALUE (PARAM_LARGE_STACK_FRAME)) | |
| 430 { | |
| 431 if (reason) | |
|
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432 *reason = CIF_LARGE_STACK_FRAME_GROWTH_LIMIT; |
| 0 | 433 return false; |
| 434 } | |
| 435 return true; | |
| 436 } | |
| 437 | |
| 438 /* Return true when function N is small enough to be inlined. */ | |
| 439 | |
|
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440 static bool |
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441 cgraph_default_inline_p (struct cgraph_node *n, cgraph_inline_failed_t *reason) |
| 0 | 442 { |
| 443 tree decl = n->decl; | |
| 444 | |
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445 if (n->local.disregard_inline_limits) |
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446 return true; |
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447 |
| 0 | 448 if (!flag_inline_small_functions && !DECL_DECLARED_INLINE_P (decl)) |
| 449 { | |
| 450 if (reason) | |
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451 *reason = CIF_FUNCTION_NOT_INLINE_CANDIDATE; |
| 0 | 452 return false; |
| 453 } | |
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454 if (!n->analyzed) |
| 0 | 455 { |
| 456 if (reason) | |
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457 *reason = CIF_BODY_NOT_AVAILABLE; |
| 0 | 458 return false; |
| 459 } | |
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460 if (cgraph_function_body_availability (n) <= AVAIL_OVERWRITABLE) |
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461 { |
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462 if (reason) |
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463 *reason = CIF_OVERWRITABLE; |
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464 return false; |
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465 } |
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466 |
| 0 | 467 |
| 468 if (DECL_DECLARED_INLINE_P (decl)) | |
| 469 { | |
|
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470 if (n->global.size >= MAX_INLINE_INSNS_SINGLE) |
| 0 | 471 { |
| 472 if (reason) | |
|
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473 *reason = CIF_MAX_INLINE_INSNS_SINGLE_LIMIT; |
| 0 | 474 return false; |
| 475 } | |
| 476 } | |
| 477 else | |
| 478 { | |
|
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479 if (n->global.size >= MAX_INLINE_INSNS_AUTO) |
| 0 | 480 { |
| 481 if (reason) | |
|
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482 *reason = CIF_MAX_INLINE_INSNS_AUTO_LIMIT; |
| 0 | 483 return false; |
| 484 } | |
| 485 } | |
| 486 | |
| 487 return true; | |
| 488 } | |
| 489 | |
| 490 /* Return true when inlining WHAT would create recursive inlining. | |
| 491 We call recursive inlining all cases where same function appears more than | |
| 492 once in the single recursion nest path in the inline graph. */ | |
| 493 | |
|
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494 static inline bool |
| 0 | 495 cgraph_recursive_inlining_p (struct cgraph_node *to, |
| 496 struct cgraph_node *what, | |
|
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497 cgraph_inline_failed_t *reason) |
| 0 | 498 { |
| 499 bool recursive; | |
| 500 if (to->global.inlined_to) | |
| 501 recursive = what->decl == to->global.inlined_to->decl; | |
| 502 else | |
| 503 recursive = what->decl == to->decl; | |
| 504 /* Marking recursive function inline has sane semantic and thus we should | |
| 505 not warn on it. */ | |
| 506 if (recursive && reason) | |
| 507 *reason = (what->local.disregard_inline_limits | |
|
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508 ? CIF_RECURSIVE_INLINING : CIF_UNSPECIFIED); |
| 0 | 509 return recursive; |
| 510 } | |
| 511 | |
| 512 /* A cost model driving the inlining heuristics in a way so the edges with | |
| 513 smallest badness are inlined first. After each inlining is performed | |
| 514 the costs of all caller edges of nodes affected are recomputed so the | |
| 515 metrics may accurately depend on values such as number of inlinable callers | |
| 516 of the function or function body size. */ | |
| 517 | |
| 518 static int | |
|
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519 cgraph_edge_badness (struct cgraph_edge *edge, bool dump) |
| 0 | 520 { |
|
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521 gcov_type badness; |
| 0 | 522 int growth = |
|
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523 (cgraph_estimate_size_after_inlining (edge->caller, edge->callee) |
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524 - edge->caller->global.size); |
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525 |
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526 if (edge->callee->local.disregard_inline_limits) |
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527 return INT_MIN; |
| 0 | 528 |
|
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529 if (dump) |
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530 { |
|
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531 fprintf (dump_file, " Badness calculation for %s -> %s\n", |
|
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532 cgraph_node_name (edge->caller), |
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533 cgraph_node_name (edge->callee)); |
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534 fprintf (dump_file, " growth %i, time %i-%i, size %i-%i\n", |
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535 growth, |
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536 edge->callee->global.time, |
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537 inline_summary (edge->callee)->time_inlining_benefit, |
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538 edge->callee->global.size, |
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539 inline_summary (edge->callee)->size_inlining_benefit); |
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540 } |
| 0 | 541 |
| 542 /* Always prefer inlining saving code size. */ | |
| 543 if (growth <= 0) | |
|
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544 { |
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545 badness = INT_MIN - growth; |
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546 if (dump) |
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547 fprintf (dump_file, " %i: Growth %i < 0\n", (int) badness, |
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548 growth); |
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549 } |
| 0 | 550 |
| 551 /* When profiling is available, base priorities -(#calls / growth). | |
| 552 So we optimize for overall number of "executed" inlined calls. */ | |
| 553 else if (max_count) | |
|
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554 { |
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555 badness = |
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556 ((int) |
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557 ((double) edge->count * INT_MIN / max_count / (max_benefit + 1)) * |
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558 (inline_summary (edge->callee)->time_inlining_benefit + 1)) / growth; |
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559 if (dump) |
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560 { |
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561 fprintf (dump_file, |
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562 " %i (relative %f): profile info. Relative count %f" |
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563 " * Relative benefit %f\n", |
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564 (int) badness, (double) badness / INT_MIN, |
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565 (double) edge->count / max_count, |
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566 (double) (inline_summary (edge->callee)-> |
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567 time_inlining_benefit + 1) / (max_benefit + 1)); |
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568 } |
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569 } |
| 0 | 570 |
| 571 /* When function local profile is available, base priorities on | |
| 572 growth / frequency, so we optimize for overall frequency of inlined | |
| 573 calls. This is not too accurate since while the call might be frequent | |
| 574 within function, the function itself is infrequent. | |
| 575 | |
| 576 Other objective to optimize for is number of different calls inlined. | |
| 577 We add the estimated growth after inlining all functions to bias the | |
| 578 priorities slightly in this direction (so fewer times called functions | |
| 579 of the same size gets priority). */ | |
| 580 else if (flag_guess_branch_prob) | |
| 581 { | |
|
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582 int div = edge->frequency * 100 / CGRAPH_FREQ_BASE + 1; |
|
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583 int benefitperc; |
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584 int growth_for_all; |
|
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585 badness = growth * 10000; |
|
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586 benefitperc = |
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587 MIN (100 * inline_summary (edge->callee)->time_inlining_benefit / |
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588 (edge->callee->global.time + 1) +1, 100); |
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589 div *= benefitperc; |
|
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590 |
| 0 | 591 |
| 592 /* Decrease badness if call is nested. */ | |
| 593 /* Compress the range so we don't overflow. */ | |
|
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594 if (div > 10000) |
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595 div = 10000 + ceil_log2 (div) - 8; |
| 0 | 596 if (div < 1) |
| 597 div = 1; | |
| 598 if (badness > 0) | |
| 599 badness /= div; | |
|
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600 growth_for_all = cgraph_estimate_growth (edge->callee); |
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601 badness += growth_for_all; |
|
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602 if (badness > INT_MAX) |
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603 badness = INT_MAX; |
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604 if (dump) |
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605 { |
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606 fprintf (dump_file, |
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607 " %i: guessed profile. frequency %i, overall growth %i," |
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608 " benefit %i%%, divisor %i\n", |
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609 (int) badness, edge->frequency, growth_for_all, benefitperc, div); |
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610 } |
| 0 | 611 } |
| 612 /* When function local profile is not available or it does not give | |
| 613 useful information (ie frequency is zero), base the cost on | |
| 614 loop nest and overall size growth, so we optimize for overall number | |
| 615 of functions fully inlined in program. */ | |
| 616 else | |
| 617 { | |
| 618 int nest = MIN (edge->loop_nest, 8); | |
| 619 badness = cgraph_estimate_growth (edge->callee) * 256; | |
| 620 | |
| 621 /* Decrease badness if call is nested. */ | |
|
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622 if (badness > 0) |
| 0 | 623 badness >>= nest; |
| 624 else | |
|
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625 { |
| 0 | 626 badness <<= nest; |
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627 } |
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628 if (dump) |
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629 fprintf (dump_file, " %i: no profile. nest %i\n", (int) badness, |
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630 nest); |
| 0 | 631 } |
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632 |
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633 /* Ensure that we did not overflow in all the fixed point math above. */ |
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634 gcc_assert (badness >= INT_MIN); |
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635 gcc_assert (badness <= INT_MAX - 1); |
| 0 | 636 /* Make recursive inlining happen always after other inlining is done. */ |
| 637 if (cgraph_recursive_inlining_p (edge->caller, edge->callee, NULL)) | |
| 638 return badness + 1; | |
| 639 else | |
| 640 return badness; | |
| 641 } | |
| 642 | |
|
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643 /* Recompute badness of EDGE and update its key in HEAP if needed. */ |
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644 static void |
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645 update_edge_key (fibheap_t heap, struct cgraph_edge *edge) |
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646 { |
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647 int badness = cgraph_edge_badness (edge, false); |
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648 if (edge->aux) |
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649 { |
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650 fibnode_t n = (fibnode_t) edge->aux; |
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651 gcc_checking_assert (n->data == edge); |
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652 |
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653 /* fibheap_replace_key only decrease the keys. |
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654 When we increase the key we do not update heap |
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655 and instead re-insert the element once it becomes |
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656 a minimum of heap. */ |
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657 if (badness < n->key) |
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658 { |
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659 fibheap_replace_key (heap, n, badness); |
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660 gcc_checking_assert (n->key == badness); |
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661 } |
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662 } |
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663 else |
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664 edge->aux = fibheap_insert (heap, badness, edge); |
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665 } |
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666 |
| 0 | 667 /* Recompute heap nodes for each of caller edge. */ |
| 668 | |
| 669 static void | |
| 670 update_caller_keys (fibheap_t heap, struct cgraph_node *node, | |
| 671 bitmap updated_nodes) | |
| 672 { | |
| 673 struct cgraph_edge *edge; | |
|
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674 cgraph_inline_failed_t failed_reason; |
| 0 | 675 |
|
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676 if (!node->local.inlinable |
|
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677 || cgraph_function_body_availability (node) <= AVAIL_OVERWRITABLE |
| 0 | 678 || node->global.inlined_to) |
| 679 return; | |
|
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680 if (!bitmap_set_bit (updated_nodes, node->uid)) |
| 0 | 681 return; |
| 682 node->global.estimated_growth = INT_MIN; | |
| 683 | |
|
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684 /* See if there is something to do. */ |
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685 for (edge = node->callers; edge; edge = edge->next_caller) |
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686 if (edge->inline_failed) |
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687 break; |
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688 if (!edge) |
| 0 | 689 return; |
| 690 /* Prune out edges we won't inline into anymore. */ | |
| 691 if (!cgraph_default_inline_p (node, &failed_reason)) | |
| 692 { | |
|
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693 for (; edge; edge = edge->next_caller) |
| 0 | 694 if (edge->aux) |
| 695 { | |
| 696 fibheap_delete_node (heap, (fibnode_t) edge->aux); | |
| 697 edge->aux = NULL; | |
| 698 if (edge->inline_failed) | |
| 699 edge->inline_failed = failed_reason; | |
| 700 } | |
| 701 return; | |
| 702 } | |
| 703 | |
|
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|
704 for (; edge; edge = edge->next_caller) |
| 0 | 705 if (edge->inline_failed) |
|
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|
706 update_edge_key (heap, edge); |
| 0 | 707 } |
| 708 | |
|
67
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|
709 /* Recompute heap nodes for each uninlined call. |
|
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710 This is used when we know that edge badnesses are going only to increase |
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711 (we introduced new call site) and thus all we need is to insert newly |
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712 created edges into heap. */ |
| 0 | 713 |
| 714 static void | |
| 715 update_callee_keys (fibheap_t heap, struct cgraph_node *node, | |
| 716 bitmap updated_nodes) | |
| 717 { | |
|
67
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|
718 struct cgraph_edge *e = node->callees; |
| 0 | 719 node->global.estimated_growth = INT_MIN; |
| 720 | |
|
67
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|
721 if (!e) |
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|
722 return; |
|
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diff
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|
723 while (true) |
|
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724 if (!e->inline_failed && e->callee->callees) |
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|
725 e = e->callee->callees; |
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|
726 else |
|
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diff
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|
727 { |
|
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|
728 if (e->inline_failed |
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|
729 && e->callee->local.inlinable |
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730 && cgraph_function_body_availability (e->callee) >= AVAIL_AVAILABLE |
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731 && !bitmap_bit_p (updated_nodes, e->callee->uid)) |
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|
732 { |
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|
733 node->global.estimated_growth = INT_MIN; |
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|
734 /* If function becomes uninlinable, we need to remove it from the heap. */ |
|
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735 if (!cgraph_default_inline_p (e->callee, &e->inline_failed)) |
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736 update_caller_keys (heap, e->callee, updated_nodes); |
|
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|
737 else |
|
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|
738 /* Otherwise update just edge E. */ |
|
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|
739 update_edge_key (heap, e); |
|
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|
740 } |
|
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|
741 if (e->next_callee) |
|
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|
742 e = e->next_callee; |
|
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|
743 else |
|
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|
744 { |
|
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|
745 do |
|
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|
746 { |
|
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747 if (e->caller == node) |
|
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|
748 return; |
|
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|
749 e = e->caller->callers; |
|
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|
750 } |
|
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|
751 while (!e->next_callee); |
|
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|
752 e = e->next_callee; |
|
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|
753 } |
|
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|
754 } |
|
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|
755 } |
|
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|
756 |
|
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diff
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|
757 /* Recompute heap nodes for each of caller edges of each of callees. |
|
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|
758 Walk recursively into all inline clones. */ |
|
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|
759 |
|
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|
760 static void |
|
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|
761 update_all_callee_keys (fibheap_t heap, struct cgraph_node *node, |
|
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|
762 bitmap updated_nodes) |
|
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763 { |
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764 struct cgraph_edge *e = node->callees; |
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765 node->global.estimated_growth = INT_MIN; |
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766 |
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767 if (!e) |
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768 return; |
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769 while (true) |
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770 if (!e->inline_failed && e->callee->callees) |
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771 e = e->callee->callees; |
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772 else |
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773 { |
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774 if (e->inline_failed) |
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775 update_caller_keys (heap, e->callee, updated_nodes); |
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776 if (e->next_callee) |
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777 e = e->next_callee; |
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778 else |
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779 { |
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780 do |
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781 { |
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782 if (e->caller == node) |
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783 return; |
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784 e = e->caller->callers; |
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785 } |
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786 while (!e->next_callee); |
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787 e = e->next_callee; |
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788 } |
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789 } |
| 0 | 790 } |
| 791 | |
| 792 /* Enqueue all recursive calls from NODE into priority queue depending on | |
| 793 how likely we want to recursively inline the call. */ | |
| 794 | |
| 795 static void | |
| 796 lookup_recursive_calls (struct cgraph_node *node, struct cgraph_node *where, | |
| 797 fibheap_t heap) | |
| 798 { | |
| 799 static int priority; | |
| 800 struct cgraph_edge *e; | |
| 801 for (e = where->callees; e; e = e->next_callee) | |
| 802 if (e->callee == node) | |
| 803 { | |
| 804 /* When profile feedback is available, prioritize by expected number | |
| 805 of calls. Without profile feedback we maintain simple queue | |
| 806 to order candidates via recursive depths. */ | |
| 807 fibheap_insert (heap, | |
| 808 !max_count ? priority++ | |
| 809 : -(e->count / ((max_count + (1<<24) - 1) / (1<<24))), | |
| 810 e); | |
| 811 } | |
| 812 for (e = where->callees; e; e = e->next_callee) | |
| 813 if (!e->inline_failed) | |
| 814 lookup_recursive_calls (node, e->callee, heap); | |
| 815 } | |
| 816 | |
| 817 /* Decide on recursive inlining: in the case function has recursive calls, | |
| 818 inline until body size reaches given argument. If any new indirect edges | |
| 819 are discovered in the process, add them to *NEW_EDGES, unless NEW_EDGES | |
| 820 is NULL. */ | |
| 821 | |
| 822 static bool | |
| 823 cgraph_decide_recursive_inlining (struct cgraph_node *node, | |
| 824 VEC (cgraph_edge_p, heap) **new_edges) | |
| 825 { | |
| 826 int limit = PARAM_VALUE (PARAM_MAX_INLINE_INSNS_RECURSIVE_AUTO); | |
| 827 int max_depth = PARAM_VALUE (PARAM_MAX_INLINE_RECURSIVE_DEPTH_AUTO); | |
| 828 int probability = PARAM_VALUE (PARAM_MIN_INLINE_RECURSIVE_PROBABILITY); | |
| 829 fibheap_t heap; | |
| 830 struct cgraph_edge *e; | |
| 831 struct cgraph_node *master_clone, *next; | |
| 832 int depth = 0; | |
| 833 int n = 0; | |
| 834 | |
|
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835 /* It does not make sense to recursively inline always-inline functions |
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836 as we are going to sorry() on the remaining calls anyway. */ |
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837 if (node->local.disregard_inline_limits |
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838 && lookup_attribute ("always_inline", DECL_ATTRIBUTES (node->decl))) |
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839 return false; |
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840 |
| 0 | 841 if (optimize_function_for_size_p (DECL_STRUCT_FUNCTION (node->decl)) |
| 842 || (!flag_inline_functions && !DECL_DECLARED_INLINE_P (node->decl))) | |
| 843 return false; | |
| 844 | |
| 845 if (DECL_DECLARED_INLINE_P (node->decl)) | |
| 846 { | |
| 847 limit = PARAM_VALUE (PARAM_MAX_INLINE_INSNS_RECURSIVE); | |
| 848 max_depth = PARAM_VALUE (PARAM_MAX_INLINE_RECURSIVE_DEPTH); | |
| 849 } | |
| 850 | |
| 851 /* Make sure that function is small enough to be considered for inlining. */ | |
| 852 if (!max_depth | |
|
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853 || cgraph_estimate_size_after_inlining (node, node) >= limit) |
| 0 | 854 return false; |
| 855 heap = fibheap_new (); | |
| 856 lookup_recursive_calls (node, node, heap); | |
| 857 if (fibheap_empty (heap)) | |
| 858 { | |
| 859 fibheap_delete (heap); | |
| 860 return false; | |
| 861 } | |
| 862 | |
| 863 if (dump_file) | |
|
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864 fprintf (dump_file, |
| 0 | 865 " Performing recursive inlining on %s\n", |
| 866 cgraph_node_name (node)); | |
| 867 | |
| 868 /* We need original clone to copy around. */ | |
|
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869 master_clone = cgraph_clone_node (node, node->decl, |
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870 node->count, CGRAPH_FREQ_BASE, 1, |
|
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871 false, NULL); |
| 0 | 872 for (e = master_clone->callees; e; e = e->next_callee) |
| 873 if (!e->inline_failed) | |
| 874 cgraph_clone_inlined_nodes (e, true, false); | |
| 875 | |
| 876 /* Do the inlining and update list of recursive call during process. */ | |
| 877 while (!fibheap_empty (heap) | |
|
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878 && (cgraph_estimate_size_after_inlining (node, master_clone) |
| 0 | 879 <= limit)) |
| 880 { | |
| 881 struct cgraph_edge *curr | |
| 882 = (struct cgraph_edge *) fibheap_extract_min (heap); | |
| 883 struct cgraph_node *cnode; | |
| 884 | |
| 885 depth = 1; | |
| 886 for (cnode = curr->caller; | |
| 887 cnode->global.inlined_to; cnode = cnode->callers->caller) | |
| 888 if (node->decl == curr->callee->decl) | |
| 889 depth++; | |
| 890 if (depth > max_depth) | |
| 891 { | |
| 892 if (dump_file) | |
|
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893 fprintf (dump_file, |
| 0 | 894 " maximal depth reached\n"); |
| 895 continue; | |
| 896 } | |
| 897 | |
| 898 if (max_count) | |
| 899 { | |
| 900 if (!cgraph_maybe_hot_edge_p (curr)) | |
| 901 { | |
| 902 if (dump_file) | |
| 903 fprintf (dump_file, " Not inlining cold call\n"); | |
| 904 continue; | |
| 905 } | |
| 906 if (curr->count * 100 / node->count < probability) | |
| 907 { | |
| 908 if (dump_file) | |
|
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909 fprintf (dump_file, |
| 0 | 910 " Probability of edge is too small\n"); |
| 911 continue; | |
| 912 } | |
| 913 } | |
| 914 | |
| 915 if (dump_file) | |
| 916 { | |
|
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917 fprintf (dump_file, |
| 0 | 918 " Inlining call of depth %i", depth); |
| 919 if (node->count) | |
| 920 { | |
| 921 fprintf (dump_file, " called approx. %.2f times per call", | |
| 922 (double)curr->count / node->count); | |
| 923 } | |
| 924 fprintf (dump_file, "\n"); | |
| 925 } | |
| 926 cgraph_redirect_edge_callee (curr, master_clone); | |
| 927 cgraph_mark_inline_edge (curr, false, new_edges); | |
| 928 lookup_recursive_calls (node, curr->callee, heap); | |
| 929 n++; | |
| 930 } | |
| 931 if (!fibheap_empty (heap) && dump_file) | |
| 932 fprintf (dump_file, " Recursive inlining growth limit met.\n"); | |
| 933 | |
| 934 fibheap_delete (heap); | |
| 935 if (dump_file) | |
|
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936 fprintf (dump_file, |
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937 "\n Inlined %i times, body grown from size %i to %i, time %i to %i\n", n, |
|
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938 master_clone->global.size, node->global.size, |
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939 master_clone->global.time, node->global.time); |
| 0 | 940 |
| 941 /* Remove master clone we used for inlining. We rely that clones inlined | |
| 942 into master clone gets queued just before master clone so we don't | |
| 943 need recursion. */ | |
| 944 for (node = cgraph_nodes; node != master_clone; | |
| 945 node = next) | |
| 946 { | |
| 947 next = node->next; | |
| 948 if (node->global.inlined_to == master_clone) | |
| 949 cgraph_remove_node (node); | |
| 950 } | |
| 951 cgraph_remove_node (master_clone); | |
| 952 /* FIXME: Recursive inlining actually reduces number of calls of the | |
| 953 function. At this place we should probably walk the function and | |
| 954 inline clones and compensate the counts accordingly. This probably | |
| 955 doesn't matter much in practice. */ | |
| 956 return n > 0; | |
| 957 } | |
| 958 | |
| 959 /* Set inline_failed for all callers of given function to REASON. */ | |
| 960 | |
| 961 static void | |
|
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962 cgraph_set_inline_failed (struct cgraph_node *node, |
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963 cgraph_inline_failed_t reason) |
| 0 | 964 { |
| 965 struct cgraph_edge *e; | |
| 966 | |
| 967 if (dump_file) | |
|
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968 fprintf (dump_file, "Inlining failed: %s\n", |
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969 cgraph_inline_failed_string (reason)); |
| 0 | 970 for (e = node->callers; e; e = e->next_caller) |
| 971 if (e->inline_failed) | |
| 972 e->inline_failed = reason; | |
| 973 } | |
| 974 | |
| 975 /* Given whole compilation unit estimate of INSNS, compute how large we can | |
| 976 allow the unit to grow. */ | |
| 977 static int | |
| 978 compute_max_insns (int insns) | |
| 979 { | |
| 980 int max_insns = insns; | |
| 981 if (max_insns < PARAM_VALUE (PARAM_LARGE_UNIT_INSNS)) | |
| 982 max_insns = PARAM_VALUE (PARAM_LARGE_UNIT_INSNS); | |
| 983 | |
| 984 return ((HOST_WIDEST_INT) max_insns | |
| 985 * (100 + PARAM_VALUE (PARAM_INLINE_UNIT_GROWTH)) / 100); | |
| 986 } | |
| 987 | |
| 988 /* Compute badness of all edges in NEW_EDGES and add them to the HEAP. */ | |
| 989 static void | |
| 990 add_new_edges_to_heap (fibheap_t heap, VEC (cgraph_edge_p, heap) *new_edges) | |
| 991 { | |
| 992 while (VEC_length (cgraph_edge_p, new_edges) > 0) | |
| 993 { | |
| 994 struct cgraph_edge *edge = VEC_pop (cgraph_edge_p, new_edges); | |
| 995 | |
| 996 gcc_assert (!edge->aux); | |
|
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997 if (edge->callee->local.inlinable |
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998 && edge->inline_failed |
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999 && cgraph_default_inline_p (edge->callee, &edge->inline_failed)) |
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1000 edge->aux = fibheap_insert (heap, cgraph_edge_badness (edge, false), edge); |
| 0 | 1001 } |
| 1002 } | |
| 1003 | |
| 1004 | |
| 1005 /* We use greedy algorithm for inlining of small functions: | |
| 1006 All inline candidates are put into prioritized heap based on estimated | |
| 1007 growth of the overall number of instructions and then update the estimates. | |
| 1008 | |
|
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1009 INLINED and INLINED_CALLEES are just pointers to arrays large enough |
| 0 | 1010 to be passed to cgraph_inlined_into and cgraph_inlined_callees. */ |
| 1011 | |
| 1012 static void | |
| 1013 cgraph_decide_inlining_of_small_functions (void) | |
| 1014 { | |
| 1015 struct cgraph_node *node; | |
| 1016 struct cgraph_edge *edge; | |
|
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1017 cgraph_inline_failed_t failed_reason; |
| 0 | 1018 fibheap_t heap = fibheap_new (); |
| 1019 bitmap updated_nodes = BITMAP_ALLOC (NULL); | |
|
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1020 int min_size, max_size; |
| 0 | 1021 VEC (cgraph_edge_p, heap) *new_indirect_edges = NULL; |
| 1022 | |
| 1023 if (flag_indirect_inlining) | |
| 1024 new_indirect_edges = VEC_alloc (cgraph_edge_p, heap, 8); | |
| 1025 | |
| 1026 if (dump_file) | |
| 1027 fprintf (dump_file, "\nDeciding on smaller functions:\n"); | |
| 1028 | |
| 1029 /* Put all inline candidates into the heap. */ | |
| 1030 | |
| 1031 for (node = cgraph_nodes; node; node = node->next) | |
| 1032 { | |
|
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1033 if (!node->local.inlinable || !node->callers) |
| 0 | 1034 continue; |
| 1035 if (dump_file) | |
| 1036 fprintf (dump_file, "Considering inline candidate %s.\n", cgraph_node_name (node)); | |
| 1037 | |
| 1038 node->global.estimated_growth = INT_MIN; | |
| 1039 if (!cgraph_default_inline_p (node, &failed_reason)) | |
| 1040 { | |
| 1041 cgraph_set_inline_failed (node, failed_reason); | |
| 1042 continue; | |
| 1043 } | |
| 1044 | |
| 1045 for (edge = node->callers; edge; edge = edge->next_caller) | |
| 1046 if (edge->inline_failed) | |
| 1047 { | |
| 1048 gcc_assert (!edge->aux); | |
|
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1049 edge->aux = fibheap_insert (heap, cgraph_edge_badness (edge, false), edge); |
| 0 | 1050 } |
| 1051 } | |
| 1052 | |
|
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1053 max_size = compute_max_insns (overall_size); |
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1054 min_size = overall_size; |
| 0 | 1055 |
|
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1056 while (overall_size <= max_size |
|
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1057 && !fibheap_empty (heap)) |
| 0 | 1058 { |
|
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1059 int old_size = overall_size; |
|
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1060 struct cgraph_node *where, *callee; |
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1061 int badness = fibheap_min_key (heap); |
|
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1062 int current_badness; |
|
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1063 int growth; |
|
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1064 cgraph_inline_failed_t not_good = CIF_OK; |
| 0 | 1065 |
|
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1066 edge = (struct cgraph_edge *) fibheap_extract_min (heap); |
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1067 gcc_assert (edge->aux); |
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1068 edge->aux = NULL; |
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1069 if (!edge->inline_failed) |
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1070 continue; |
|
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1071 |
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1072 /* When updating the edge costs, we only decrease badness in the keys. |
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1073 When the badness increase, we keep the heap as it is and re-insert |
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1074 key now. */ |
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1075 current_badness = cgraph_edge_badness (edge, false); |
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1076 gcc_assert (current_badness >= badness); |
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1077 if (current_badness != badness) |
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1078 { |
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1079 edge->aux = fibheap_insert (heap, current_badness, edge); |
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1080 continue; |
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1081 } |
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1082 |
|
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1083 callee = edge->callee; |
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1084 |
|
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1085 growth = (cgraph_estimate_size_after_inlining (edge->caller, edge->callee) |
|
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1086 - edge->caller->global.size); |
| 0 | 1087 |
| 1088 if (dump_file) | |
| 1089 { | |
|
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1090 fprintf (dump_file, |
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1091 "\nConsidering %s with %i size\n", |
| 0 | 1092 cgraph_node_name (edge->callee), |
|
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1093 edge->callee->global.size); |
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1094 fprintf (dump_file, |
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1095 " to be inlined into %s in %s:%i\n" |
| 0 | 1096 " Estimated growth after inlined into all callees is %+i insns.\n" |
| 1097 " Estimated badness is %i, frequency %.2f.\n", | |
| 1098 cgraph_node_name (edge->caller), | |
|
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1099 flag_wpa ? "unknown" |
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1100 : gimple_filename ((const_gimple) edge->call_stmt), |
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1101 flag_wpa ? -1 : gimple_lineno ((const_gimple) edge->call_stmt), |
| 0 | 1102 cgraph_estimate_growth (edge->callee), |
|
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1103 badness, |
| 0 | 1104 edge->frequency / (double)CGRAPH_FREQ_BASE); |
| 1105 if (edge->count) | |
| 1106 fprintf (dump_file," Called "HOST_WIDEST_INT_PRINT_DEC"x\n", edge->count); | |
|
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1107 if (dump_flags & TDF_DETAILS) |
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1108 cgraph_edge_badness (edge, true); |
| 0 | 1109 } |
| 1110 | |
| 1111 /* When not having profile info ready we don't weight by any way the | |
| 1112 position of call in procedure itself. This means if call of | |
| 1113 function A from function B seems profitable to inline, the recursive | |
| 1114 call of function A in inline copy of A in B will look profitable too | |
| 1115 and we end up inlining until reaching maximal function growth. This | |
| 1116 is not good idea so prohibit the recursive inlining. | |
| 1117 | |
| 1118 ??? When the frequencies are taken into account we might not need this | |
| 1119 restriction. | |
| 1120 | |
|
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1121 We need to be careful here, in some testcases, e.g. directives.c in |
| 0 | 1122 libcpp, we can estimate self recursive function to have negative growth |
| 1123 for inlining completely. | |
| 1124 */ | |
| 1125 if (!edge->count) | |
| 1126 { | |
| 1127 where = edge->caller; | |
| 1128 while (where->global.inlined_to) | |
| 1129 { | |
| 1130 if (where->decl == edge->callee->decl) | |
| 1131 break; | |
| 1132 where = where->callers->caller; | |
| 1133 } | |
| 1134 if (where->global.inlined_to) | |
| 1135 { | |
| 1136 edge->inline_failed | |
|
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1137 = (edge->callee->local.disregard_inline_limits |
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1138 ? CIF_RECURSIVE_INLINING : CIF_UNSPECIFIED); |
| 0 | 1139 if (dump_file) |
| 1140 fprintf (dump_file, " inline_failed:Recursive inlining performed only for function itself.\n"); | |
| 1141 continue; | |
| 1142 } | |
| 1143 } | |
| 1144 | |
|
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1145 if (edge->callee->local.disregard_inline_limits) |
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1146 ; |
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1147 else if (!cgraph_maybe_hot_edge_p (edge)) |
|
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1148 not_good = CIF_UNLIKELY_CALL; |
|
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1149 else if (!flag_inline_functions |
| 0 | 1150 && !DECL_DECLARED_INLINE_P (edge->callee->decl)) |
|
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1151 not_good = CIF_NOT_DECLARED_INLINED; |
|
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1152 else if (optimize_function_for_size_p (DECL_STRUCT_FUNCTION(edge->caller->decl))) |
|
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1153 not_good = CIF_OPTIMIZING_FOR_SIZE; |
| 0 | 1154 if (not_good && growth > 0 && cgraph_estimate_growth (edge->callee) > 0) |
| 1155 { | |
| 1156 if (!cgraph_recursive_inlining_p (edge->caller, edge->callee, | |
| 1157 &edge->inline_failed)) | |
| 1158 { | |
| 1159 edge->inline_failed = not_good; | |
| 1160 if (dump_file) | |
|
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1161 fprintf (dump_file, " inline_failed:%s.\n", |
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1162 cgraph_inline_failed_string (edge->inline_failed)); |
| 0 | 1163 } |
| 1164 continue; | |
| 1165 } | |
| 1166 if (!cgraph_default_inline_p (edge->callee, &edge->inline_failed)) | |
| 1167 { | |
| 1168 if (!cgraph_recursive_inlining_p (edge->caller, edge->callee, | |
| 1169 &edge->inline_failed)) | |
| 1170 { | |
| 1171 if (dump_file) | |
|
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1172 fprintf (dump_file, " inline_failed:%s.\n", |
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1173 cgraph_inline_failed_string (edge->inline_failed)); |
| 0 | 1174 } |
| 1175 continue; | |
| 1176 } | |
|
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1177 if (!tree_can_inline_p (edge) |
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1178 || edge->call_stmt_cannot_inline_p) |
| 0 | 1179 { |
| 1180 if (dump_file) | |
|
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1181 fprintf (dump_file, " inline_failed:%s.\n", |
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1182 cgraph_inline_failed_string (edge->inline_failed)); |
| 0 | 1183 continue; |
| 1184 } | |
| 1185 if (cgraph_recursive_inlining_p (edge->caller, edge->callee, | |
| 1186 &edge->inline_failed)) | |
| 1187 { | |
| 1188 where = edge->caller; | |
| 1189 if (where->global.inlined_to) | |
| 1190 where = where->global.inlined_to; | |
| 1191 if (!cgraph_decide_recursive_inlining (where, | |
| 1192 flag_indirect_inlining | |
| 1193 ? &new_indirect_edges : NULL)) | |
| 1194 continue; | |
| 1195 if (flag_indirect_inlining) | |
| 1196 add_new_edges_to_heap (heap, new_indirect_edges); | |
|
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1197 update_all_callee_keys (heap, where, updated_nodes); |
| 0 | 1198 } |
| 1199 else | |
| 1200 { | |
| 1201 struct cgraph_node *callee; | |
|
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1202 if (!cgraph_check_inline_limits (edge->caller, edge->callee, |
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1203 &edge->inline_failed)) |
| 0 | 1204 { |
| 1205 if (dump_file) | |
| 1206 fprintf (dump_file, " Not inlining into %s:%s.\n", | |
|
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1207 cgraph_node_name (edge->caller), |
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1208 cgraph_inline_failed_string (edge->inline_failed)); |
| 0 | 1209 continue; |
| 1210 } | |
| 1211 callee = edge->callee; | |
|
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1212 gcc_checking_assert (!callee->global.inlined_to); |
| 0 | 1213 cgraph_mark_inline_edge (edge, true, &new_indirect_edges); |
| 1214 if (flag_indirect_inlining) | |
| 1215 add_new_edges_to_heap (heap, new_indirect_edges); | |
| 1216 | |
|
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1217 /* We inlined last offline copy to the body. This might lead |
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1218 to callees of function having fewer call sites and thus they |
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1219 may need updating. */ |
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1220 if (callee->global.inlined_to) |
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1221 update_all_callee_keys (heap, callee, updated_nodes); |
|
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|
1222 else |
|
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|
1223 update_callee_keys (heap, edge->callee, updated_nodes); |
| 0 | 1224 } |
| 1225 where = edge->caller; | |
| 1226 if (where->global.inlined_to) | |
| 1227 where = where->global.inlined_to; | |
| 1228 | |
| 1229 /* Our profitability metric can depend on local properties | |
| 1230 such as number of inlinable calls and size of the function body. | |
| 1231 After inlining these properties might change for the function we | |
| 1232 inlined into (since it's body size changed) and for the functions | |
| 1233 called by function we inlined (since number of it inlinable callers | |
| 1234 might change). */ | |
| 1235 update_caller_keys (heap, where, updated_nodes); | |
|
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|
1236 |
|
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1237 /* We removed one call of the function we just inlined. If offline |
|
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1238 copy is still needed, be sure to update the keys. */ |
|
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1239 if (callee != where && !callee->global.inlined_to) |
|
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|
1240 update_caller_keys (heap, callee, updated_nodes); |
| 0 | 1241 bitmap_clear (updated_nodes); |
| 1242 | |
| 1243 if (dump_file) | |
| 1244 { | |
|
55
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diff
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|
1245 fprintf (dump_file, |
|
67
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1246 " Inlined into %s which now has time %i and size %i," |
|
55
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diff
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|
1247 "net change of %+i.\n", |
| 0 | 1248 cgraph_node_name (edge->caller), |
|
55
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|
1249 edge->caller->global.time, |
|
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|
1250 edge->caller->global.size, |
|
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|
1251 overall_size - old_size); |
| 0 | 1252 } |
|
55
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|
1253 if (min_size > overall_size) |
| 0 | 1254 { |
|
55
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|
1255 min_size = overall_size; |
|
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|
1256 max_size = compute_max_insns (min_size); |
| 0 | 1257 |
| 1258 if (dump_file) | |
|
55
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|
1259 fprintf (dump_file, "New minimal size reached: %i\n", min_size); |
| 0 | 1260 } |
| 1261 } | |
|
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|
1262 while (!fibheap_empty (heap)) |
| 0 | 1263 { |
|
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|
1264 int badness = fibheap_min_key (heap); |
|
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|
1265 |
|
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1266 edge = (struct cgraph_edge *) fibheap_extract_min (heap); |
| 0 | 1267 gcc_assert (edge->aux); |
| 1268 edge->aux = NULL; | |
|
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1269 if (!edge->inline_failed) |
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|
1270 continue; |
|
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|
1271 #ifdef ENABLE_CHECKING |
|
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1272 gcc_assert (cgraph_edge_badness (edge, false) >= badness); |
|
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1273 #endif |
|
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1274 if (dump_file) |
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1275 { |
|
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|
1276 fprintf (dump_file, |
|
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1277 "\nSkipping %s with %i size\n", |
|
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1278 cgraph_node_name (edge->callee), |
|
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1279 edge->callee->global.size); |
|
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|
1280 fprintf (dump_file, |
|
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1281 " called by %s in %s:%i\n" |
|
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1282 " Estimated growth after inlined into all callees is %+i insns.\n" |
|
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1283 " Estimated badness is %i, frequency %.2f.\n", |
|
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1284 cgraph_node_name (edge->caller), |
|
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|
1285 flag_wpa ? "unknown" |
|
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1286 : gimple_filename ((const_gimple) edge->call_stmt), |
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1287 flag_wpa ? -1 : gimple_lineno ((const_gimple) edge->call_stmt), |
|
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1288 cgraph_estimate_growth (edge->callee), |
|
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|
1289 badness, |
|
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|
1290 edge->frequency / (double)CGRAPH_FREQ_BASE); |
|
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|
1291 if (edge->count) |
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1292 fprintf (dump_file," Called "HOST_WIDEST_INT_PRINT_DEC"x\n", edge->count); |
|
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|
1293 if (dump_flags & TDF_DETAILS) |
|
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|
1294 cgraph_edge_badness (edge, true); |
|
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|
1295 } |
| 0 | 1296 if (!edge->callee->local.disregard_inline_limits && edge->inline_failed |
| 1297 && !cgraph_recursive_inlining_p (edge->caller, edge->callee, | |
| 1298 &edge->inline_failed)) | |
|
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|
1299 edge->inline_failed = CIF_INLINE_UNIT_GROWTH_LIMIT; |
| 0 | 1300 } |
| 1301 | |
| 1302 if (new_indirect_edges) | |
| 1303 VEC_free (cgraph_edge_p, heap, new_indirect_edges); | |
| 1304 fibheap_delete (heap); | |
| 1305 BITMAP_FREE (updated_nodes); | |
| 1306 } | |
| 1307 | |
|
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|
1308 /* Flatten NODE from the IPA inliner. */ |
|
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|
1309 |
|
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changeset
|
1310 static void |
|
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|
1311 cgraph_flatten (struct cgraph_node *node) |
|
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1312 { |
|
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|
1313 struct cgraph_edge *e; |
|
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|
1314 |
|
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|
1315 /* We shouldn't be called recursively when we are being processed. */ |
|
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changeset
|
1316 gcc_assert (node->aux == NULL); |
|
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|
1317 |
|
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diff
changeset
|
1318 node->aux = (void *)(size_t) INLINE_ALL; |
|
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|
1319 |
|
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1320 for (e = node->callees; e; e = e->next_callee) |
|
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1321 { |
|
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1322 struct cgraph_node *orig_callee; |
|
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1323 |
|
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1324 if (e->call_stmt_cannot_inline_p) |
|
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1325 { |
|
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1326 if (dump_file) |
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1327 fprintf (dump_file, "Not inlining: %s", |
|
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1328 cgraph_inline_failed_string (e->inline_failed)); |
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1329 continue; |
|
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1330 } |
|
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1331 |
|
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1332 if (!e->callee->analyzed) |
|
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1333 { |
|
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1334 if (dump_file) |
|
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1335 fprintf (dump_file, |
|
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1336 "Not inlining: Function body not available.\n"); |
|
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1337 continue; |
|
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1338 } |
|
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|
1339 |
|
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1340 /* We've hit cycle? It is time to give up. */ |
|
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|
1341 if (e->callee->aux) |
|
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1342 { |
|
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|
1343 if (dump_file) |
|
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|
1344 fprintf (dump_file, |
|
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|
1345 "Not inlining %s into %s to avoid cycle.\n", |
|
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1346 cgraph_node_name (e->callee), |
|
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|
1347 cgraph_node_name (e->caller)); |
|
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55
diff
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|
1348 e->inline_failed = CIF_RECURSIVE_INLINING; |
|
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parents:
55
diff
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|
1349 continue; |
|
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parents:
55
diff
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|
1350 } |
|
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parents:
55
diff
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|
1351 |
|
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parents:
55
diff
changeset
|
1352 /* When the edge is already inlined, we just need to recurse into |
|
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parents:
55
diff
changeset
|
1353 it in order to fully flatten the leaves. */ |
|
b7f97abdc517
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1354 if (!e->inline_failed) |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
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|
1355 { |
|
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parents:
55
diff
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|
1356 cgraph_flatten (e->callee); |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
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|
1357 continue; |
|
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parents:
55
diff
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|
1358 } |
|
b7f97abdc517
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parents:
55
diff
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|
1359 |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
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|
1360 if (cgraph_recursive_inlining_p (node, e->callee, &e->inline_failed)) |
|
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55
diff
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|
1361 { |
|
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parents:
55
diff
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|
1362 if (dump_file) |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
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|
1363 fprintf (dump_file, "Not inlining: recursive call.\n"); |
|
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parents:
55
diff
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|
1364 continue; |
|
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parents:
55
diff
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|
1365 } |
|
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parents:
55
diff
changeset
|
1366 |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
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|
1367 if (!tree_can_inline_p (e)) |
|
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parents:
55
diff
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|
1368 { |
|
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parents:
55
diff
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|
1369 if (dump_file) |
|
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parents:
55
diff
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|
1370 fprintf (dump_file, "Not inlining: %s", |
|
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55
diff
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|
1371 cgraph_inline_failed_string (e->inline_failed)); |
|
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diff
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|
1372 continue; |
|
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55
diff
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|
1373 } |
|
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diff
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|
1374 |
|
67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
1375 if (gimple_in_ssa_p (DECL_STRUCT_FUNCTION (node->decl)) |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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63
diff
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|
1376 != gimple_in_ssa_p (DECL_STRUCT_FUNCTION (e->callee->decl))) |
|
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63
diff
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|
1377 { |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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|
1378 if (dump_file) |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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63
diff
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|
1379 fprintf (dump_file, "Not inlining: SSA form does not match.\n"); |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
1380 continue; |
|
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diff
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|
1381 } |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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diff
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|
1382 |
|
63
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55
diff
changeset
|
1383 /* Inline the edge and flatten the inline clone. Avoid |
|
b7f97abdc517
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diff
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|
1384 recursing through the original node if the node was cloned. */ |
|
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55
diff
changeset
|
1385 if (dump_file) |
|
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parents:
55
diff
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|
1386 fprintf (dump_file, " Inlining %s into %s.\n", |
|
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diff
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|
1387 cgraph_node_name (e->callee), |
|
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55
diff
changeset
|
1388 cgraph_node_name (e->caller)); |
|
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parents:
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diff
changeset
|
1389 orig_callee = e->callee; |
|
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55
diff
changeset
|
1390 cgraph_mark_inline_edge (e, true, NULL); |
|
b7f97abdc517
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55
diff
changeset
|
1391 if (e->callee != orig_callee) |
|
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parents:
55
diff
changeset
|
1392 orig_callee->aux = (void *)(size_t) INLINE_ALL; |
|
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parents:
55
diff
changeset
|
1393 cgraph_flatten (e->callee); |
|
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parents:
55
diff
changeset
|
1394 if (e->callee != orig_callee) |
|
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55
diff
changeset
|
1395 orig_callee->aux = NULL; |
|
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diff
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|
1396 } |
|
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55
diff
changeset
|
1397 |
|
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
1398 node->aux = NULL; |
|
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parents:
55
diff
changeset
|
1399 } |
|
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55
diff
changeset
|
1400 |
| 0 | 1401 /* Decide on the inlining. We do so in the topological order to avoid |
| 1402 expenses on updating data structures. */ | |
| 1403 | |
| 1404 static unsigned int | |
| 1405 cgraph_decide_inlining (void) | |
| 1406 { | |
| 1407 struct cgraph_node *node; | |
| 1408 int nnodes; | |
| 1409 struct cgraph_node **order = | |
| 1410 XCNEWVEC (struct cgraph_node *, cgraph_n_nodes); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1411 int old_size = 0; |
| 0 | 1412 int i; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1413 int initial_size = 0; |
| 0 | 1414 |
| 1415 cgraph_remove_function_insertion_hook (function_insertion_hook_holder); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1416 if (in_lto_p && flag_indirect_inlining) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1417 ipa_update_after_lto_read (); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
1418 if (flag_indirect_inlining) |
|
b7f97abdc517
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1419 ipa_create_all_structures_for_iinln (); |
| 0 | 1420 |
| 1421 max_count = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1422 max_benefit = 0; |
| 0 | 1423 for (node = cgraph_nodes; node; node = node->next) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1424 if (node->analyzed) |
| 0 | 1425 { |
| 1426 struct cgraph_edge *e; | |
| 1427 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1428 gcc_assert (inline_summary (node)->self_size == node->global.size); |
|
67
f6334be47118
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1429 if (!DECL_EXTERNAL (node->decl)) |
|
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1430 initial_size += node->global.size; |
| 0 | 1431 for (e = node->callees; e; e = e->next_callee) |
| 1432 if (max_count < e->count) | |
| 1433 max_count = e->count; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1434 if (max_benefit < inline_summary (node)->time_inlining_benefit) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1435 max_benefit = inline_summary (node)->time_inlining_benefit; |
| 0 | 1436 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1437 gcc_assert (in_lto_p |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1438 || !max_count |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1439 || (profile_info && flag_branch_probabilities)); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1440 overall_size = initial_size; |
| 0 | 1441 |
| 1442 nnodes = cgraph_postorder (order); | |
| 1443 | |
| 1444 if (dump_file) | |
| 1445 fprintf (dump_file, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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parents:
0
diff
changeset
|
1446 "\nDeciding on inlining. Starting with size %i.\n", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1447 initial_size); |
| 0 | 1448 |
| 1449 for (node = cgraph_nodes; node; node = node->next) | |
| 1450 node->aux = 0; | |
| 1451 | |
| 1452 if (dump_file) | |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1453 fprintf (dump_file, "\nFlattening functions:\n"); |
| 0 | 1454 |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
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parents:
55
diff
changeset
|
1455 /* In the first pass handle functions to be flattened. Do this with |
|
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parents:
55
diff
changeset
|
1456 a priority so none of our later choices will make this impossible. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
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diff
changeset
|
1457 for (i = nnodes - 1; i >= 0; i--) |
| 0 | 1458 { |
|
63
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parents:
55
diff
changeset
|
1459 node = order[i]; |
| 0 | 1460 |
|
63
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parents:
55
diff
changeset
|
1461 /* Handle nodes to be flattened, but don't update overall unit |
|
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parents:
55
diff
changeset
|
1462 size. Calling the incremental inliner here is lame, |
|
b7f97abdc517
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parents:
55
diff
changeset
|
1463 a simple worklist should be enough. What should be left |
|
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parents:
55
diff
changeset
|
1464 here from the early inliner (if it runs) is cyclic cases. |
|
b7f97abdc517
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parents:
55
diff
changeset
|
1465 Ideally when processing callees we stop inlining at the |
|
b7f97abdc517
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parents:
55
diff
changeset
|
1466 entry of cycles, possibly cloning that entry point and |
|
b7f97abdc517
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parents:
55
diff
changeset
|
1467 try to flatten itself turning it into a self-recursive |
|
b7f97abdc517
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55
diff
changeset
|
1468 function. */ |
|
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parents:
55
diff
changeset
|
1469 if (lookup_attribute ("flatten", |
|
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55
diff
changeset
|
1470 DECL_ATTRIBUTES (node->decl)) != NULL) |
|
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parents:
55
diff
changeset
|
1471 { |
| 0 | 1472 if (dump_file) |
| 1473 fprintf (dump_file, | |
|
63
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55
diff
changeset
|
1474 "Flattening %s\n", cgraph_node_name (node)); |
|
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parents:
55
diff
changeset
|
1475 cgraph_flatten (node); |
| 0 | 1476 } |
| 1477 } | |
| 1478 | |
| 1479 cgraph_decide_inlining_of_small_functions (); | |
| 1480 | |
| 1481 if (flag_inline_functions_called_once) | |
| 1482 { | |
| 1483 if (dump_file) | |
| 1484 fprintf (dump_file, "\nDeciding on functions called once:\n"); | |
| 1485 | |
| 1486 /* And finally decide what functions are called once. */ | |
| 1487 for (i = nnodes - 1; i >= 0; i--) | |
| 1488 { | |
| 1489 node = order[i]; | |
| 1490 | |
| 1491 if (node->callers | |
| 1492 && !node->callers->next_caller | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1493 && !node->global.inlined_to |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1494 && cgraph_will_be_removed_from_program_if_no_direct_calls (node) |
| 0 | 1495 && node->local.inlinable |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1496 && cgraph_function_body_availability (node) >= AVAIL_AVAILABLE |
| 0 | 1497 && node->callers->inline_failed |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1498 && node->callers->caller != node |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1499 && node->callers->caller->global.inlined_to != node |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1500 && !node->callers->call_stmt_cannot_inline_p |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1501 && tree_can_inline_p (node->callers) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1502 && !DECL_EXTERNAL (node->decl)) |
| 0 | 1503 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1504 cgraph_inline_failed_t reason; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1505 old_size = overall_size; |
| 0 | 1506 if (dump_file) |
| 1507 { | |
| 1508 fprintf (dump_file, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1509 "\nConsidering %s size %i.\n", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1510 cgraph_node_name (node), node->global.size); |
| 0 | 1511 fprintf (dump_file, |
| 1512 " Called once from %s %i insns.\n", | |
| 1513 cgraph_node_name (node->callers->caller), | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1514 node->callers->caller->global.size); |
| 0 | 1515 } |
| 1516 | |
| 1517 if (cgraph_check_inline_limits (node->callers->caller, node, | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1518 &reason)) |
| 0 | 1519 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1520 struct cgraph_node *caller = node->callers->caller; |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1521 cgraph_mark_inline_edge (node->callers, true, NULL); |
| 0 | 1522 if (dump_file) |
| 1523 fprintf (dump_file, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1524 " Inlined into %s which now has %i size" |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1525 " for a net change of %+i size.\n", |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1526 cgraph_node_name (caller), |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1527 caller->global.size, |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1528 overall_size - old_size); |
| 0 | 1529 } |
| 1530 else | |
| 1531 { | |
| 1532 if (dump_file) | |
| 1533 fprintf (dump_file, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1534 " Not inlining: %s.\n", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1535 cgraph_inline_failed_string (reason)); |
| 0 | 1536 } |
| 1537 } | |
| 1538 } | |
| 1539 } | |
| 1540 | |
| 1541 /* Free ipa-prop structures if they are no longer needed. */ | |
| 1542 if (flag_indirect_inlining) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1543 ipa_free_all_structures_after_iinln (); |
| 0 | 1544 |
| 1545 if (dump_file) | |
| 1546 fprintf (dump_file, | |
| 1547 "\nInlined %i calls, eliminated %i functions, " | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1548 "size %i turned to %i size.\n\n", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1549 ncalls_inlined, nfunctions_inlined, initial_size, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1550 overall_size); |
| 0 | 1551 free (order); |
| 1552 return 0; | |
| 1553 } | |
| 1554 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1555 /* Return true when N is leaf function. Accept cheap builtins |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1556 in leaf functions. */ |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1557 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1558 static bool |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1559 leaf_node_p (struct cgraph_node *n) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1560 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1561 struct cgraph_edge *e; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1562 for (e = n->callees; e; e = e->next_callee) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1563 if (!is_inexpensive_builtin (e->callee->decl)) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1564 return false; |
| 0 | 1565 return true; |
| 1566 } | |
| 1567 | |
| 1568 /* Decide on the inlining. We do so in the topological order to avoid | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1569 expenses on updating data structures. */ |
| 0 | 1570 |
| 1571 static bool | |
| 1572 cgraph_decide_inlining_incrementally (struct cgraph_node *node, | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1573 enum inlining_mode mode) |
| 0 | 1574 { |
| 1575 struct cgraph_edge *e; | |
| 1576 bool inlined = false; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1577 cgraph_inline_failed_t failed_reason; |
| 0 | 1578 |
| 1579 #ifdef ENABLE_CHECKING | |
| 1580 verify_cgraph_node (node); | |
| 1581 #endif | |
| 1582 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1583 if (mode != INLINE_ALWAYS_INLINE && mode != INLINE_SIZE_NORECURSIVE |
| 0 | 1584 && lookup_attribute ("flatten", DECL_ATTRIBUTES (node->decl)) != NULL) |
| 1585 { | |
| 1586 if (dump_file) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1587 fprintf (dump_file, "Incrementally flattening %s\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1588 cgraph_node_name (node)); |
| 0 | 1589 mode = INLINE_ALL; |
| 1590 } | |
| 1591 | |
| 1592 /* First of all look for always inline functions. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1593 if (mode != INLINE_SIZE_NORECURSIVE) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1594 for (e = node->callees; e; e = e->next_callee) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1595 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1596 if (!e->callee->local.disregard_inline_limits |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1597 && (mode != INLINE_ALL || !e->callee->local.inlinable)) |
| 0 | 1598 continue; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1599 if (dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1600 fprintf (dump_file, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1601 "Considering to always inline inline candidate %s.\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1602 cgraph_node_name (e->callee)); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1603 if (cgraph_recursive_inlining_p (node, e->callee, &e->inline_failed)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1604 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1605 if (dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1606 fprintf (dump_file, "Not inlining: recursive call.\n"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1607 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1608 } |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1609 if (!tree_can_inline_p (e) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1610 || e->call_stmt_cannot_inline_p) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1611 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1612 if (dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1613 fprintf (dump_file, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1614 "Not inlining: %s", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1615 cgraph_inline_failed_string (e->inline_failed)); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1616 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1617 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1618 if (gimple_in_ssa_p (DECL_STRUCT_FUNCTION (node->decl)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1619 != gimple_in_ssa_p (DECL_STRUCT_FUNCTION (e->callee->decl))) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1620 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1621 if (dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1622 fprintf (dump_file, "Not inlining: SSA form does not match.\n"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1623 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1624 } |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1625 if (!e->callee->analyzed) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1626 { |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1627 if (dump_file) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1628 fprintf (dump_file, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1629 "Not inlining: Function body no longer available.\n"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1630 continue; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1631 } |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1632 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1633 if (dump_file) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1634 fprintf (dump_file, " Inlining %s into %s.\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1635 cgraph_node_name (e->callee), |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1636 cgraph_node_name (e->caller)); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1637 cgraph_mark_inline_edge (e, true, NULL); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1638 inlined = true; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1639 } |
| 0 | 1640 |
| 1641 /* Now do the automatic inlining. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1642 if (mode != INLINE_ALL && mode != INLINE_ALWAYS_INLINE |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1643 /* Never inline regular functions into always-inline functions |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1644 during incremental inlining. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1645 && !node->local.disregard_inline_limits) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1646 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1647 for (e = node->callees; e; e = e->next_callee) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1648 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1649 int allowed_growth = 0; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1650 if (!e->callee->local.inlinable |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1651 || !e->inline_failed |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1652 || e->callee->local.disregard_inline_limits) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1653 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1654 if (dump_file) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1655 fprintf (dump_file, "Considering inline candidate %s.\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1656 cgraph_node_name (e->callee)); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1657 if (cgraph_recursive_inlining_p (node, e->callee, &e->inline_failed)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1658 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1659 if (dump_file) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1660 fprintf (dump_file, "Not inlining: recursive call.\n"); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1661 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1662 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1663 if (gimple_in_ssa_p (DECL_STRUCT_FUNCTION (node->decl)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1664 != gimple_in_ssa_p (DECL_STRUCT_FUNCTION (e->callee->decl))) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1665 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1666 if (dump_file) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1667 fprintf (dump_file, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1668 "Not inlining: SSA form does not match.\n"); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1669 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1670 } |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1671 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1672 if (cgraph_maybe_hot_edge_p (e) && leaf_node_p (e->callee) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1673 && optimize_function_for_speed_p (cfun)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1674 allowed_growth = PARAM_VALUE (PARAM_EARLY_INLINING_INSNS); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1675 |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1676 /* When the function body would grow and inlining the function |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1677 won't eliminate the need for offline copy of the function, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1678 don't inline. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1679 if (((mode == INLINE_SIZE || mode == INLINE_SIZE_NORECURSIVE) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1680 || (!flag_inline_functions |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1681 && !DECL_DECLARED_INLINE_P (e->callee->decl))) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1682 && (cgraph_estimate_size_after_inlining (e->caller, e->callee) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1683 > e->caller->global.size + allowed_growth) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1684 && cgraph_estimate_growth (e->callee) > allowed_growth) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1685 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1686 if (dump_file) |
| 0 | 1687 fprintf (dump_file, |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1688 "Not inlining: code size would grow by %i.\n", |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1689 cgraph_estimate_size_after_inlining (e->caller, |
| 0 | 1690 e->callee) |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1691 - e->caller->global.size); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1692 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1693 } |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1694 if (e->call_stmt_cannot_inline_p |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1695 || !tree_can_inline_p (e)) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1696 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1697 if (dump_file) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1698 fprintf (dump_file, |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1699 "Not inlining: call site not inlinable.\n"); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1700 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1701 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1702 if (!e->callee->analyzed) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1703 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1704 if (dump_file) |
| 0 | 1705 fprintf (dump_file, |
| 1706 "Not inlining: Function body no longer available.\n"); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1707 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1708 } |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1709 if (!cgraph_check_inline_limits (node, e->callee, &e->inline_failed)) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1710 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1711 if (dump_file) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1712 fprintf (dump_file, "Not inlining: %s.\n", |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1713 cgraph_inline_failed_string (e->inline_failed)); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1714 continue; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1715 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1716 if (cgraph_default_inline_p (e->callee, &failed_reason)) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1717 { |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1718 if (dump_file) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1719 fprintf (dump_file, " Inlining %s into %s.\n", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1720 cgraph_node_name (e->callee), |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1721 cgraph_node_name (e->caller)); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1722 cgraph_mark_inline_edge (e, true, NULL); |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1723 inlined = true; |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1724 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1725 } |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1726 } |
| 0 | 1727 return inlined; |
| 1728 } | |
| 1729 | |
| 1730 /* Because inlining might remove no-longer reachable nodes, we need to | |
| 1731 keep the array visible to garbage collector to avoid reading collected | |
| 1732 out nodes. */ | |
| 1733 static int nnodes; | |
| 1734 static GTY ((length ("nnodes"))) struct cgraph_node **order; | |
| 1735 | |
| 1736 /* Do inlining of small functions. Doing so early helps profiling and other | |
| 1737 passes to be somewhat more effective and avoids some code duplication in | |
| 1738 later real inlining pass for testcases with very many function calls. */ | |
| 1739 static unsigned int | |
| 1740 cgraph_early_inlining (void) | |
| 1741 { | |
| 1742 struct cgraph_node *node = cgraph_node (current_function_decl); | |
| 1743 unsigned int todo = 0; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1744 int iterations = 0; |
| 0 | 1745 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1746 if (seen_error ()) |
| 0 | 1747 return 0; |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1748 |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1749 if (!optimize |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1750 || flag_no_inline |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1751 || !flag_early_inlining) |
| 0 | 1752 { |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1753 /* When not optimizing or not inlining inline only always-inline |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1754 functions. */ |
|
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diff
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|
1755 cgraph_decide_inlining_incrementally (node, INLINE_ALWAYS_INLINE); |
| 0 | 1756 timevar_push (TV_INTEGRATION); |
|
55
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diff
changeset
|
1757 todo |= optimize_inline_calls (current_function_decl); |
| 0 | 1758 timevar_pop (TV_INTEGRATION); |
| 1759 } | |
|
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diff
changeset
|
1760 else |
|
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diff
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|
1761 { |
|
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diff
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|
1762 if (lookup_attribute ("flatten", |
|
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diff
changeset
|
1763 DECL_ATTRIBUTES (node->decl)) != NULL) |
|
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diff
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|
1764 { |
|
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diff
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|
1765 if (dump_file) |
|
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diff
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|
1766 fprintf (dump_file, |
|
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diff
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|
1767 "Flattening %s\n", cgraph_node_name (node)); |
|
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diff
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|
1768 cgraph_flatten (node); |
|
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diff
changeset
|
1769 timevar_push (TV_INTEGRATION); |
|
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diff
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|
1770 todo |= optimize_inline_calls (current_function_decl); |
|
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diff
changeset
|
1771 timevar_pop (TV_INTEGRATION); |
|
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diff
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|
1772 } |
|
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diff
changeset
|
1773 /* We iterate incremental inlining to get trivial cases of indirect |
|
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diff
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|
1774 inlining. */ |
|
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diff
changeset
|
1775 while (iterations < PARAM_VALUE (PARAM_EARLY_INLINER_MAX_ITERATIONS) |
|
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diff
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|
1776 && cgraph_decide_inlining_incrementally (node, |
|
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diff
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|
1777 iterations |
|
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diff
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|
1778 ? INLINE_SIZE_NORECURSIVE |
|
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|
1779 : INLINE_SIZE)) |
|
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diff
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|
1780 { |
|
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diff
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|
1781 timevar_push (TV_INTEGRATION); |
|
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diff
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|
1782 todo |= optimize_inline_calls (current_function_decl); |
|
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diff
changeset
|
1783 iterations++; |
|
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diff
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|
1784 timevar_pop (TV_INTEGRATION); |
|
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diff
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|
1785 } |
|
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diff
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|
1786 if (dump_file) |
|
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diff
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|
1787 fprintf (dump_file, "Iterations: %i\n", iterations); |
|
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diff
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|
1788 } |
| 0 | 1789 |
|
63
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diff
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|
1790 cfun->always_inline_functions_inlined = true; |
|
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diff
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|
1791 |
|
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diff
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|
1792 return todo; |
| 0 | 1793 } |
| 1794 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1795 struct gimple_opt_pass pass_early_inline = |
| 0 | 1796 { |
| 1797 { | |
| 1798 GIMPLE_PASS, | |
| 1799 "einline", /* name */ | |
|
63
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diff
changeset
|
1800 NULL, /* gate */ |
| 0 | 1801 cgraph_early_inlining, /* execute */ |
| 1802 NULL, /* sub */ | |
| 1803 NULL, /* next */ | |
| 1804 0, /* static_pass_number */ | |
| 1805 TV_INLINE_HEURISTICS, /* tv_id */ | |
| 1806 0, /* properties_required */ | |
|
55
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update it from 4.4.3 to 4.5.0
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diff
changeset
|
1807 0, /* properties_provided */ |
| 0 | 1808 0, /* properties_destroyed */ |
| 1809 0, /* todo_flags_start */ | |
| 1810 TODO_dump_func /* todo_flags_finish */ | |
| 1811 } | |
| 1812 }; | |
| 1813 | |
| 1814 | |
|
67
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|
1815 /* See if statement might disappear after inlining. |
|
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|
1816 0 - means not eliminated |
|
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|
1817 1 - half of statements goes away |
|
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diff
changeset
|
1818 2 - for sure it is eliminated. |
|
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diff
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|
1819 We are not terribly sophisticated, basically looking for simple abstraction |
|
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|
1820 penalty wrappers. */ |
| 0 | 1821 |
|
67
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|
1822 static int |
|
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changeset
|
1823 eliminated_by_inlining_prob (gimple stmt) |
|
55
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diff
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|
1824 { |
|
77e2b8dfacca
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diff
changeset
|
1825 enum gimple_code code = gimple_code (stmt); |
|
77e2b8dfacca
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diff
changeset
|
1826 switch (code) |
|
77e2b8dfacca
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diff
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|
1827 { |
|
77e2b8dfacca
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diff
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|
1828 case GIMPLE_RETURN: |
|
67
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diff
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|
1829 return 2; |
|
55
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diff
changeset
|
1830 case GIMPLE_ASSIGN: |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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diff
changeset
|
1831 if (gimple_num_ops (stmt) != 2) |
|
67
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|
1832 return 0; |
|
55
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diff
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|
1833 |
|
77e2b8dfacca
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diff
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|
1834 /* Casts of parameters, loads from parameters passed by reference |
|
67
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diff
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|
1835 and stores to return value or parameters are often free after |
|
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diff
changeset
|
1836 inlining dua to SRA and further combining. |
|
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changeset
|
1837 Assume that half of statements goes away. */ |
|
55
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parents:
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diff
changeset
|
1838 if (gimple_assign_rhs_code (stmt) == CONVERT_EXPR |
|
77e2b8dfacca
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parents:
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diff
changeset
|
1839 || gimple_assign_rhs_code (stmt) == NOP_EXPR |
|
77e2b8dfacca
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diff
changeset
|
1840 || gimple_assign_rhs_code (stmt) == VIEW_CONVERT_EXPR |
|
77e2b8dfacca
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diff
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|
1841 || gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS) |
|
77e2b8dfacca
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diff
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|
1842 { |
|
77e2b8dfacca
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diff
changeset
|
1843 tree rhs = gimple_assign_rhs1 (stmt); |
|
77e2b8dfacca
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diff
changeset
|
1844 tree lhs = gimple_assign_lhs (stmt); |
|
77e2b8dfacca
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diff
changeset
|
1845 tree inner_rhs = rhs; |
|
77e2b8dfacca
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diff
changeset
|
1846 tree inner_lhs = lhs; |
|
77e2b8dfacca
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diff
changeset
|
1847 bool rhs_free = false; |
|
77e2b8dfacca
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diff
changeset
|
1848 bool lhs_free = false; |
|
77e2b8dfacca
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|
1849 |
|
67
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|
1850 while (handled_component_p (inner_lhs) |
|
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|
1851 || TREE_CODE (inner_lhs) == MEM_REF) |
|
55
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diff
changeset
|
1852 inner_lhs = TREE_OPERAND (inner_lhs, 0); |
|
77e2b8dfacca
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diff
changeset
|
1853 while (handled_component_p (inner_rhs) |
|
67
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|
1854 || TREE_CODE (inner_rhs) == ADDR_EXPR |
|
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|
1855 || TREE_CODE (inner_rhs) == MEM_REF) |
|
55
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changeset
|
1856 inner_rhs = TREE_OPERAND (inner_rhs, 0); |
|
77e2b8dfacca
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changeset
|
1857 |
|
77e2b8dfacca
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diff
changeset
|
1858 |
|
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diff
changeset
|
1859 if (TREE_CODE (inner_rhs) == PARM_DECL |
|
77e2b8dfacca
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diff
changeset
|
1860 || (TREE_CODE (inner_rhs) == SSA_NAME |
|
77e2b8dfacca
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0
diff
changeset
|
1861 && SSA_NAME_IS_DEFAULT_DEF (inner_rhs) |
|
77e2b8dfacca
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diff
changeset
|
1862 && TREE_CODE (SSA_NAME_VAR (inner_rhs)) == PARM_DECL)) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
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changeset
|
1863 rhs_free = true; |
|
77e2b8dfacca
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diff
changeset
|
1864 if (rhs_free && is_gimple_reg (lhs)) |
|
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changeset
|
1865 lhs_free = true; |
|
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diff
changeset
|
1866 if (((TREE_CODE (inner_lhs) == PARM_DECL |
|
77e2b8dfacca
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diff
changeset
|
1867 || (TREE_CODE (inner_lhs) == SSA_NAME |
|
77e2b8dfacca
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diff
changeset
|
1868 && SSA_NAME_IS_DEFAULT_DEF (inner_lhs) |
|
77e2b8dfacca
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diff
changeset
|
1869 && TREE_CODE (SSA_NAME_VAR (inner_lhs)) == PARM_DECL)) |
|
77e2b8dfacca
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diff
changeset
|
1870 && inner_lhs != lhs) |
|
77e2b8dfacca
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changeset
|
1871 || TREE_CODE (inner_lhs) == RESULT_DECL |
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1872 || (TREE_CODE (inner_lhs) == SSA_NAME |
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1873 && TREE_CODE (SSA_NAME_VAR (inner_lhs)) == RESULT_DECL)) |
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1874 lhs_free = true; |
|
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1875 if (lhs_free |
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1876 && (is_gimple_reg (rhs) || is_gimple_min_invariant (rhs))) |
|
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1877 rhs_free = true; |
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1878 if (lhs_free && rhs_free) |
|
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1879 return 1; |
|
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1880 } |
|
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1881 return 0; |
|
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1882 default: |
|
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1883 return 0; |
|
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1884 } |
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1885 } |
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1886 |
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1887 /* Compute function body size parameters for NODE. */ |
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1888 |
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1889 static void |
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1890 estimate_function_body_sizes (struct cgraph_node *node) |
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1891 { |
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1892 gcov_type time = 0; |
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1893 gcov_type time_inlining_benefit = 0; |
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1894 /* Estimate static overhead for function prologue/epilogue and alignment. */ |
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1895 int size = 2; |
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1896 /* Benefits are scaled by probability of elimination that is in range |
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1897 <0,2>. */ |
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1898 int size_inlining_benefit = 2 * 2; |
|
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1899 basic_block bb; |
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1900 gimple_stmt_iterator bsi; |
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1901 struct function *my_function = DECL_STRUCT_FUNCTION (node->decl); |
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1902 tree arg; |
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1903 int freq; |
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1904 tree funtype = TREE_TYPE (node->decl); |
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1905 |
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1906 if (dump_file) |
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1907 fprintf (dump_file, "Analyzing function body size: %s\n", |
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1908 cgraph_node_name (node)); |
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1909 |
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1910 gcc_assert (my_function && my_function->cfg); |
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1911 FOR_EACH_BB_FN (bb, my_function) |
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1912 { |
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1913 freq = compute_call_stmt_bb_frequency (node->decl, bb); |
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1914 for (bsi = gsi_start_bb (bb); !gsi_end_p (bsi); gsi_next (&bsi)) |
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parents:
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1915 { |
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1916 gimple stmt = gsi_stmt (bsi); |
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1917 int this_size = estimate_num_insns (stmt, &eni_size_weights); |
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1918 int this_time = estimate_num_insns (stmt, &eni_time_weights); |
|
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1919 int prob; |
|
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1920 |
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1921 if (dump_file && (dump_flags & TDF_DETAILS)) |
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parents:
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1922 { |
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parents:
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1923 fprintf (dump_file, " freq:%6i size:%3i time:%3i ", |
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1924 freq, this_size, this_time); |
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parents:
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1925 print_gimple_stmt (dump_file, stmt, 0, 0); |
|
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1926 } |
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1927 this_time *= freq; |
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1928 time += this_time; |
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1929 size += this_size; |
|
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1930 prob = eliminated_by_inlining_prob (stmt); |
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1931 if (prob == 1 && dump_file && (dump_flags & TDF_DETAILS)) |
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1932 fprintf (dump_file, " 50%% will be eliminated by inlining\n"); |
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1933 if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS)) |
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1934 fprintf (dump_file, " will eliminated by inlining\n"); |
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1935 size_inlining_benefit += this_size * prob; |
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|
1936 time_inlining_benefit += this_time * prob; |
|
55
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|
1937 gcc_assert (time >= 0); |
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1938 gcc_assert (size >= 0); |
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1939 } |
|
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1940 } |
|
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1941 time = (time + CGRAPH_FREQ_BASE / 2) / CGRAPH_FREQ_BASE; |
|
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1942 time_inlining_benefit = ((time_inlining_benefit + CGRAPH_FREQ_BASE) |
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1943 / (CGRAPH_FREQ_BASE * 2)); |
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1944 size_inlining_benefit = (size_inlining_benefit + 1) / 2; |
|
55
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|
1945 if (dump_file) |
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1946 fprintf (dump_file, "Overall function body time: %i-%i size: %i-%i\n", |
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|
1947 (int)time, (int)time_inlining_benefit, |
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changeset
|
1948 size, size_inlining_benefit); |
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|
1949 time_inlining_benefit += eni_time_weights.call_cost; |
|
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changeset
|
1950 size_inlining_benefit += eni_size_weights.call_cost; |
|
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1951 if (!VOID_TYPE_P (TREE_TYPE (funtype))) |
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changeset
|
1952 { |
|
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changeset
|
1953 int cost = estimate_move_cost (TREE_TYPE (funtype)); |
|
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parents:
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changeset
|
1954 time_inlining_benefit += cost; |
|
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parents:
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changeset
|
1955 size_inlining_benefit += cost; |
|
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1956 } |
|
67
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|
1957 for (arg = DECL_ARGUMENTS (node->decl); arg; arg = DECL_CHAIN (arg)) |
|
55
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changeset
|
1958 if (!VOID_TYPE_P (TREE_TYPE (arg))) |
|
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changeset
|
1959 { |
|
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parents:
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diff
changeset
|
1960 int cost = estimate_move_cost (TREE_TYPE (arg)); |
|
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parents:
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changeset
|
1961 time_inlining_benefit += cost; |
|
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parents:
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changeset
|
1962 size_inlining_benefit += cost; |
|
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parents:
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changeset
|
1963 } |
|
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parents:
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changeset
|
1964 if (time_inlining_benefit > MAX_TIME) |
|
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parents:
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changeset
|
1965 time_inlining_benefit = MAX_TIME; |
|
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parents:
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|
1966 if (time > MAX_TIME) |
|
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parents:
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1967 time = MAX_TIME; |
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1968 inline_summary (node)->self_time = time; |
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1969 inline_summary (node)->self_size = size; |
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1970 if (dump_file) |
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1971 fprintf (dump_file, "With function call overhead time: %i-%i size: %i-%i\n", |
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1972 (int)time, (int)time_inlining_benefit, |
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1973 size, size_inlining_benefit); |
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1974 inline_summary (node)->time_inlining_benefit = time_inlining_benefit; |
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1975 inline_summary (node)->size_inlining_benefit = size_inlining_benefit; |
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1976 } |
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1977 |
| 0 | 1978 /* Compute parameters of functions used by inliner. */ |
|
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1979 void |
| 0 | 1980 compute_inline_parameters (struct cgraph_node *node) |
| 1981 { | |
| 1982 HOST_WIDE_INT self_stack_size; | |
| 1983 | |
| 1984 gcc_assert (!node->global.inlined_to); | |
| 1985 | |
|
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1986 /* Estimate the stack size for the function if we're optimizing. */ |
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1987 self_stack_size = optimize ? estimated_stack_frame_size (node) : 0; |
| 0 | 1988 inline_summary (node)->estimated_self_stack_size = self_stack_size; |
| 1989 node->global.estimated_stack_size = self_stack_size; | |
| 1990 node->global.stack_frame_offset = 0; | |
| 1991 | |
| 1992 /* Can this function be inlined at all? */ | |
|
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1993 node->local.inlinable = tree_inlinable_function_p (node->decl); |
|
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1994 if (!node->local.inlinable) |
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1995 node->local.disregard_inline_limits = 0; |
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1996 |
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1997 /* Inlinable functions always can change signature. */ |
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1998 if (node->local.inlinable) |
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1999 node->local.can_change_signature = true; |
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2000 else |
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2001 { |
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2002 struct cgraph_edge *e; |
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2003 |
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2004 /* Functions calling builtin_apply can not change signature. */ |
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2005 for (e = node->callees; e; e = e->next_callee) |
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2006 if (DECL_BUILT_IN (e->callee->decl) |
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2007 && DECL_BUILT_IN_CLASS (e->callee->decl) == BUILT_IN_NORMAL |
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2008 && DECL_FUNCTION_CODE (e->callee->decl) == BUILT_IN_APPLY_ARGS) |
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2009 break; |
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2010 node->local.can_change_signature = !e; |
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2011 } |
|
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2012 estimate_function_body_sizes (node); |
| 0 | 2013 /* Inlining characteristics are maintained by the cgraph_mark_inline. */ |
|
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2014 node->global.time = inline_summary (node)->self_time; |
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2015 node->global.size = inline_summary (node)->self_size; |
| 0 | 2016 } |
| 2017 | |
| 2018 | |
| 2019 /* Compute parameters of functions used by inliner using | |
| 2020 current_function_decl. */ | |
| 2021 static unsigned int | |
| 2022 compute_inline_parameters_for_current (void) | |
| 2023 { | |
| 2024 compute_inline_parameters (cgraph_node (current_function_decl)); | |
| 2025 return 0; | |
| 2026 } | |
| 2027 | |
|
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2028 struct gimple_opt_pass pass_inline_parameters = |
| 0 | 2029 { |
| 2030 { | |
| 2031 GIMPLE_PASS, | |
|
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2032 "inline_param", /* name */ |
| 0 | 2033 NULL, /* gate */ |
| 2034 compute_inline_parameters_for_current,/* execute */ | |
| 2035 NULL, /* sub */ | |
| 2036 NULL, /* next */ | |
| 2037 0, /* static_pass_number */ | |
| 2038 TV_INLINE_HEURISTICS, /* tv_id */ | |
| 2039 0, /* properties_required */ | |
|
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2040 0, /* properties_provided */ |
| 0 | 2041 0, /* properties_destroyed */ |
| 2042 0, /* todo_flags_start */ | |
| 2043 0 /* todo_flags_finish */ | |
| 2044 } | |
| 2045 }; | |
| 2046 | |
|
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2047 /* This function performs intraprocedural analysis in NODE that is required to |
| 0 | 2048 inline indirect calls. */ |
| 2049 static void | |
| 2050 inline_indirect_intraprocedural_analysis (struct cgraph_node *node) | |
| 2051 { | |
|
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2052 ipa_analyze_node (node); |
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2053 if (dump_file && (dump_flags & TDF_DETAILS)) |
| 0 | 2054 { |
| 2055 ipa_print_node_params (dump_file, node); | |
| 2056 ipa_print_node_jump_functions (dump_file, node); | |
| 2057 } | |
| 2058 } | |
| 2059 | |
| 2060 /* Note function body size. */ | |
| 2061 static void | |
| 2062 analyze_function (struct cgraph_node *node) | |
| 2063 { | |
| 2064 push_cfun (DECL_STRUCT_FUNCTION (node->decl)); | |
| 2065 current_function_decl = node->decl; | |
| 2066 | |
| 2067 compute_inline_parameters (node); | |
|
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2068 /* FIXME: We should remove the optimize check after we ensure we never run |
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2069 IPA passes when not optimizing. */ |
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2070 if (flag_indirect_inlining && optimize) |
| 0 | 2071 inline_indirect_intraprocedural_analysis (node); |
| 2072 | |
| 2073 current_function_decl = NULL; | |
| 2074 pop_cfun (); | |
| 2075 } | |
| 2076 | |
| 2077 /* Called when new function is inserted to callgraph late. */ | |
| 2078 static void | |
| 2079 add_new_function (struct cgraph_node *node, void *data ATTRIBUTE_UNUSED) | |
| 2080 { | |
| 2081 analyze_function (node); | |
| 2082 } | |
| 2083 | |
| 2084 /* Note function body size. */ | |
| 2085 static void | |
| 2086 inline_generate_summary (void) | |
| 2087 { | |
| 2088 struct cgraph_node *node; | |
| 2089 | |
| 2090 function_insertion_hook_holder = | |
| 2091 cgraph_add_function_insertion_hook (&add_new_function, NULL); | |
| 2092 | |
| 2093 if (flag_indirect_inlining) | |
| 2094 { | |
| 2095 ipa_register_cgraph_hooks (); | |
| 2096 ipa_check_create_node_params (); | |
| 2097 ipa_check_create_edge_args (); | |
| 2098 } | |
| 2099 | |
| 2100 for (node = cgraph_nodes; node; node = node->next) | |
| 2101 if (node->analyzed) | |
| 2102 analyze_function (node); | |
|
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2103 |
| 0 | 2104 return; |
| 2105 } | |
| 2106 | |
| 2107 /* Apply inline plan to function. */ | |
| 2108 static unsigned int | |
| 2109 inline_transform (struct cgraph_node *node) | |
| 2110 { | |
| 2111 unsigned int todo = 0; | |
| 2112 struct cgraph_edge *e; | |
|
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2113 bool inline_p = false; |
| 0 | 2114 |
|
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2115 /* FIXME: Currently the pass manager is adding inline transform more than once to some |
|
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2116 clones. This needs revisiting after WPA cleanups. */ |
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2117 if (cfun->after_inlining) |
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2118 return 0; |
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2119 |
| 0 | 2120 /* We might need the body of this function so that we can expand |
| 2121 it inline somewhere else. */ | |
| 2122 if (cgraph_preserve_function_body_p (node->decl)) | |
| 2123 save_inline_function_body (node); | |
| 2124 | |
| 2125 for (e = node->callees; e; e = e->next_callee) | |
|
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2126 { |
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2127 cgraph_redirect_edge_call_stmt_to_callee (e); |
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2128 if (!e->inline_failed || warn_inline) |
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2129 inline_p = true; |
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2130 } |
| 0 | 2131 |
|
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2132 if (inline_p) |
| 0 | 2133 { |
| 2134 timevar_push (TV_INTEGRATION); | |
| 2135 todo = optimize_inline_calls (current_function_decl); | |
| 2136 timevar_pop (TV_INTEGRATION); | |
| 2137 } | |
|
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2138 cfun->always_inline_functions_inlined = true; |
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2139 cfun->after_inlining = true; |
| 0 | 2140 return todo | execute_fixup_cfg (); |
| 2141 } | |
| 2142 | |
|
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2143 /* Read inline summary. Jump functions are shared among ipa-cp |
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2144 and inliner, so when ipa-cp is active, we don't need to write them |
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2145 twice. */ |
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2146 |
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2147 static void |
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2148 inline_read_summary (void) |
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2149 { |
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2150 if (flag_indirect_inlining) |
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2151 { |
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2152 ipa_register_cgraph_hooks (); |
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2153 if (!flag_ipa_cp) |
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2154 ipa_prop_read_jump_functions (); |
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2155 } |
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2156 function_insertion_hook_holder = |
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2157 cgraph_add_function_insertion_hook (&add_new_function, NULL); |
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2158 } |
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2159 |
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2160 /* Write inline summary for node in SET. |
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2161 Jump functions are shared among ipa-cp and inliner, so when ipa-cp is |
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2162 active, we don't need to write them twice. */ |
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2163 |
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2164 static void |
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2165 inline_write_summary (cgraph_node_set set, |
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2166 varpool_node_set vset ATTRIBUTE_UNUSED) |
|
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2167 { |
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2168 if (flag_indirect_inlining && !flag_ipa_cp) |
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2169 ipa_prop_write_jump_functions (set); |
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2170 } |
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2171 |
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2172 /* When to run IPA inlining. Inlining of always-inline functions |
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2173 happens during early inlining. */ |
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2174 |
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2175 static bool |
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2176 gate_cgraph_decide_inlining (void) |
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2177 { |
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2178 /* ??? We'd like to skip this if not optimizing or not inlining as |
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2179 all always-inline functions have been processed by early |
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2180 inlining already. But this at least breaks EH with C++ as |
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2181 we need to unconditionally run fixup_cfg even at -O0. |
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2182 So leave it on unconditionally for now. */ |
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2183 return 1; |
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2184 } |
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2185 |
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2186 struct ipa_opt_pass_d pass_ipa_inline = |
| 0 | 2187 { |
| 2188 { | |
| 2189 IPA_PASS, | |
| 2190 "inline", /* name */ | |
|
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2191 gate_cgraph_decide_inlining, /* gate */ |
| 0 | 2192 cgraph_decide_inlining, /* execute */ |
| 2193 NULL, /* sub */ | |
| 2194 NULL, /* next */ | |
| 2195 0, /* static_pass_number */ | |
| 2196 TV_INLINE_HEURISTICS, /* tv_id */ | |
| 2197 0, /* properties_required */ | |
|
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2198 0, /* properties_provided */ |
| 0 | 2199 0, /* properties_destroyed */ |
| 2200 TODO_remove_functions, /* todo_flags_finish */ | |
| 2201 TODO_dump_cgraph | TODO_dump_func | |
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2202 | TODO_remove_functions | TODO_ggc_collect /* todo_flags_finish */ |
| 0 | 2203 }, |
| 2204 inline_generate_summary, /* generate_summary */ | |
|
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2205 inline_write_summary, /* write_summary */ |
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2206 inline_read_summary, /* read_summary */ |
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2207 NULL, /* write_optimization_summary */ |
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2208 NULL, /* read_optimization_summary */ |
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2209 NULL, /* stmt_fixup */ |
| 0 | 2210 0, /* TODOs */ |
| 2211 inline_transform, /* function_transform */ | |
| 2212 NULL, /* variable_transform */ | |
| 2213 }; | |
| 2214 | |
| 2215 | |
| 2216 #include "gt-ipa-inline.h" |