Mercurial > hg > CbC > CbC_gcc
annotate gcc/cgraph.h @ 63:b7f97abdc517 gcc-4.6-20100522
update gcc from gcc-4.5.0 to gcc-4.6
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 May 2010 12:47:05 +0900 |
| parents | 77e2b8dfacca |
| children | f6334be47118 |
| rev | line source |
|---|---|
| 0 | 1 /* Callgraph handling code. |
|
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 0 | 3 Free Software Foundation, Inc. |
| 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 #ifndef GCC_CGRAPH_H | |
| 23 #define GCC_CGRAPH_H | |
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24 |
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25 #include "vec.h" |
| 0 | 26 #include "tree.h" |
| 27 #include "basic-block.h" | |
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28 #include "function.h" |
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29 #include "ipa-ref.h" /* FIXME: inappropriate dependency of cgraph on IPA. */ |
| 0 | 30 |
| 31 enum availability | |
| 32 { | |
| 33 /* Not yet set by cgraph_function_body_availability. */ | |
| 34 AVAIL_UNSET, | |
| 35 /* Function body/variable initializer is unknown. */ | |
| 36 AVAIL_NOT_AVAILABLE, | |
| 37 /* Function body/variable initializer is known but might be replaced | |
| 38 by a different one from other compilation unit and thus needs to | |
| 39 be dealt with a care. Like AVAIL_NOT_AVAILABLE it can have | |
| 40 arbitrary side effects on escaping variables and functions, while | |
| 41 like AVAILABLE it might access static variables. */ | |
| 42 AVAIL_OVERWRITABLE, | |
| 43 /* Function body/variable initializer is known and will be used in final | |
| 44 program. */ | |
| 45 AVAIL_AVAILABLE, | |
| 46 /* Function body/variable initializer is known and all it's uses are explicitly | |
| 47 visible within current unit (ie it's address is never taken and it is not | |
| 48 exported to other units). | |
| 49 Currently used only for functions. */ | |
| 50 AVAIL_LOCAL | |
| 51 }; | |
| 52 | |
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53 /* This is the information that is put into the cgraph local structure |
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54 to recover a function. */ |
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55 struct lto_file_decl_data; |
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56 |
| 0 | 57 extern const char * const cgraph_availability_names[]; |
| 58 | |
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59 /* Function inlining information. */ |
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60 |
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61 struct GTY(()) inline_summary |
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62 { |
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63 /* Estimated stack frame consumption by the function. */ |
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64 HOST_WIDE_INT estimated_self_stack_size; |
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65 |
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66 /* Size of the function body. */ |
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67 int self_size; |
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68 /* How many instructions are likely going to disappear after inlining. */ |
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69 int size_inlining_benefit; |
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70 /* Estimated time spent executing the function body. */ |
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71 int self_time; |
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72 /* How much time is going to be saved by inlining. */ |
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73 int time_inlining_benefit; |
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74 }; |
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75 |
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76 /* Information about thunk, used only for same body aliases. */ |
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77 |
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78 struct GTY(()) cgraph_thunk_info { |
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79 /* Information about the thunk. */ |
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80 HOST_WIDE_INT fixed_offset; |
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81 HOST_WIDE_INT virtual_value; |
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82 tree alias; |
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83 bool this_adjusting; |
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84 bool virtual_offset_p; |
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85 /* Set to true when alias node is thunk. */ |
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86 bool thunk_p; |
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87 }; |
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88 |
| 0 | 89 /* Information about the function collected locally. |
| 90 Available after function is analyzed. */ | |
| 91 | |
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92 struct GTY(()) cgraph_local_info { |
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93 /* File stream where this node is being written to. */ |
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94 struct lto_file_decl_data * lto_file_data; |
| 0 | 95 |
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96 struct inline_summary inline_summary; |
| 0 | 97 |
| 98 /* Set when function function is visible in current compilation unit only | |
| 99 and its address is never taken. */ | |
| 100 unsigned local : 1; | |
| 101 | |
| 102 /* Set when function is visible by other units. */ | |
| 103 unsigned externally_visible : 1; | |
| 104 | |
| 105 /* Set once it has been finalized so we consider it to be output. */ | |
| 106 unsigned finalized : 1; | |
| 107 | |
| 108 /* False when there something makes inlining impossible (such as va_arg). */ | |
| 109 unsigned inlinable : 1; | |
| 110 | |
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111 /* False when there something makes versioning impossible. |
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112 Currently computed and used only by ipa-cp. */ |
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113 unsigned versionable : 1; |
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114 |
| 0 | 115 /* True when function should be inlined independently on its size. */ |
| 116 unsigned disregard_inline_limits : 1; | |
| 117 | |
| 118 /* True when the function has been originally extern inline, but it is | |
| 119 redefined now. */ | |
| 120 unsigned redefined_extern_inline : 1; | |
| 121 | |
| 122 /* True if the function is going to be emitted in some other translation | |
| 123 unit, referenced from vtable. */ | |
| 124 unsigned vtable_method : 1; | |
| 125 }; | |
| 126 | |
| 127 /* Information about the function that needs to be computed globally | |
| 128 once compilation is finished. Available only with -funit-at-a-time. */ | |
| 129 | |
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130 struct GTY(()) cgraph_global_info { |
| 0 | 131 /* Estimated stack frame consumption by the function. */ |
| 132 HOST_WIDE_INT estimated_stack_size; | |
| 133 /* Expected offset of the stack frame of inlined function. */ | |
| 134 HOST_WIDE_INT stack_frame_offset; | |
| 135 | |
| 136 /* For inline clones this points to the function they will be | |
| 137 inlined into. */ | |
| 138 struct cgraph_node *inlined_to; | |
| 139 | |
| 140 /* Estimated size of the function after inlining. */ | |
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141 int time; |
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142 int size; |
| 0 | 143 |
| 144 /* Estimated growth after inlining. INT_MIN if not computed. */ | |
| 145 int estimated_growth; | |
| 146 }; | |
| 147 | |
| 148 /* Information about the function that is propagated by the RTL backend. | |
| 149 Available only for functions that has been already assembled. */ | |
| 150 | |
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151 struct GTY(()) cgraph_rtl_info { |
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152 unsigned int preferred_incoming_stack_boundary; |
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153 }; |
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154 |
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155 /* Represent which DECL tree (or reference to such tree) |
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156 will be replaced by another tree while versioning. */ |
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157 struct GTY(()) ipa_replace_map |
| 0 | 158 { |
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159 /* The tree that will be replaced. */ |
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160 tree old_tree; |
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161 /* The new (replacing) tree. */ |
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162 tree new_tree; |
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163 /* Parameter number to replace, when old_tree is NULL. */ |
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164 int parm_num; |
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165 /* True when a substitution should be done, false otherwise. */ |
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166 bool replace_p; |
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167 /* True when we replace a reference to old_tree. */ |
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168 bool ref_p; |
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169 }; |
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170 typedef struct ipa_replace_map *ipa_replace_map_p; |
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171 DEF_VEC_P(ipa_replace_map_p); |
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172 DEF_VEC_ALLOC_P(ipa_replace_map_p,gc); |
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173 |
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174 struct GTY(()) cgraph_clone_info |
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175 { |
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176 VEC(ipa_replace_map_p,gc)* tree_map; |
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177 bitmap args_to_skip; |
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178 bitmap combined_args_to_skip; |
| 0 | 179 }; |
| 180 | |
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181 enum node_frequency { |
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182 /* This function most likely won't be executed at all. |
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183 (set only when profile feedback is available or via function attribute). */ |
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184 NODE_FREQUENCY_UNLIKELY_EXECUTED, |
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185 /* For functions that are known to be executed once (i.e. constructors, destructors |
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186 and main function. */ |
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187 NODE_FREQUENCY_EXECUTED_ONCE, |
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188 /* The default value. */ |
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189 NODE_FREQUENCY_NORMAL, |
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190 /* Optimize this function hard |
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191 (set only when profile feedback is available or via function attribute). */ |
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192 NODE_FREQUENCY_HOT |
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193 }; |
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194 |
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195 |
| 0 | 196 /* The cgraph data structure. |
| 197 Each function decl has assigned cgraph_node listing callees and callers. */ | |
| 198 | |
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199 struct GTY((chain_next ("%h.next"), chain_prev ("%h.previous"))) cgraph_node { |
| 0 | 200 tree decl; |
| 201 struct cgraph_edge *callees; | |
| 202 struct cgraph_edge *callers; | |
| 203 struct cgraph_node *next; | |
| 204 struct cgraph_node *previous; | |
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205 /* List of edges representing indirect calls with a yet undetermined |
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206 callee. */ |
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207 struct cgraph_edge *indirect_calls; |
| 0 | 208 /* For nested functions points to function the node is nested in. */ |
| 209 struct cgraph_node *origin; | |
| 210 /* Points to first nested function, if any. */ | |
| 211 struct cgraph_node *nested; | |
| 212 /* Pointer to the next function with same origin, if any. */ | |
| 213 struct cgraph_node *next_nested; | |
| 214 /* Pointer to the next function in cgraph_nodes_queue. */ | |
| 215 struct cgraph_node *next_needed; | |
| 216 /* Pointer to the next clone. */ | |
|
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217 struct cgraph_node *next_sibling_clone; |
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218 struct cgraph_node *prev_sibling_clone; |
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219 struct cgraph_node *clones; |
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220 struct cgraph_node *clone_of; |
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221 /* For normal nodes pointer to the list of alias and thunk nodes, |
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222 in alias/thunk nodes pointer to the normal node. */ |
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223 struct cgraph_node *same_body; |
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224 /* Circular list of nodes in the same comdat group if non-NULL. */ |
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225 struct cgraph_node *same_comdat_group; |
| 0 | 226 /* For functions with many calls sites it holds map from call expression |
| 227 to the edge to speed up cgraph_edge function. */ | |
| 228 htab_t GTY((param_is (struct cgraph_edge))) call_site_hash; | |
| 229 | |
| 230 PTR GTY ((skip)) aux; | |
| 231 | |
|
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232 /* Interprocedural passes scheduled to have their transform functions |
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233 applied next time we execute local pass on them. We maintain it |
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234 per-function in order to allow IPA passes to introduce new functions. */ |
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235 VEC(ipa_opt_pass,heap) * GTY((skip)) ipa_transforms_to_apply; |
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236 |
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237 struct ipa_ref_list ref_list; |
| 0 | 238 struct cgraph_local_info local; |
| 239 struct cgraph_global_info global; | |
| 240 struct cgraph_rtl_info rtl; | |
|
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241 struct cgraph_clone_info clone; |
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242 struct cgraph_thunk_info thunk; |
| 0 | 243 |
| 244 /* Expected number of executions: calculated in profile.c. */ | |
| 245 gcov_type count; | |
| 246 /* Unique id of the node. */ | |
| 247 int uid; | |
| 248 /* Ordering of all cgraph nodes. */ | |
| 249 int order; | |
| 250 | |
| 251 /* unique id for profiling. pid is not suitable because of different | |
| 252 number of cfg nodes with -fprofile-generate and -fprofile-use */ | |
| 253 int pid; | |
| 254 | |
|
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255 /* Set when function must be output for some reason. The primary |
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256 use of this flag is to mark functions needed to be output for |
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257 non-standard reason. Functions that are externally visible |
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258 or reachable from functions needed to be output are marked |
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259 by specialized flags. */ |
| 0 | 260 unsigned needed : 1; |
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261 /* Set when function has address taken. |
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262 In current implementation it imply needed flag. */ |
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263 unsigned address_taken : 1; |
| 0 | 264 /* Set when decl is an abstract function pointed to by the |
| 265 ABSTRACT_DECL_ORIGIN of a reachable function. */ | |
| 266 unsigned abstract_and_needed : 1; | |
| 267 /* Set when function is reachable by call from other function | |
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268 that is either reachable or needed. |
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269 This flag is computed at original cgraph construction and then |
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270 updated in cgraph_remove_unreachable_nodes. Note that after |
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271 cgraph_remove_unreachable_nodes cgraph still can contain unreachable |
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272 nodes when they are needed for virtual clone instantiation. */ |
| 0 | 273 unsigned reachable : 1; |
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274 /* Set when function is reachable by call from other LTRANS partition. */ |
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275 unsigned reachable_from_other_partition : 1; |
| 0 | 276 /* Set once the function is lowered (i.e. its CFG is built). */ |
| 277 unsigned lowered : 1; | |
| 278 /* Set once the function has been instantiated and its callee | |
| 279 lists created. */ | |
| 280 unsigned analyzed : 1; | |
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281 /* Set when function is available in the other LTRANS partition. */ |
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282 unsigned in_other_partition : 1; |
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283 /* Set when function is scheduled to be processed by local passes. */ |
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284 unsigned process : 1; |
| 0 | 285 /* Set for aliases once they got through assemble_alias. */ |
| 286 unsigned alias : 1; | |
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287 /* Set for nodes that was constructed and finalized by frontend. */ |
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288 unsigned finalized_by_frontend : 1; |
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289 /* Set for alias and thunk nodes, same_body points to the node they are alias |
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290 of and they are linked through the next/previous pointers. */ |
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291 unsigned same_body_alias : 1; |
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292 /* How commonly executed the node is. Initialized during branch |
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293 probabilities pass. */ |
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294 ENUM_BITFIELD (node_frequency) frequency : 2; |
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295 }; |
| 0 | 296 |
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297 typedef struct cgraph_node *cgraph_node_ptr; |
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298 |
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299 DEF_VEC_P(cgraph_node_ptr); |
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300 DEF_VEC_ALLOC_P(cgraph_node_ptr,heap); |
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301 DEF_VEC_ALLOC_P(cgraph_node_ptr,gc); |
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302 |
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303 /* A cgraph node set is a collection of cgraph nodes. A cgraph node |
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304 can appear in multiple sets. */ |
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305 struct GTY(()) cgraph_node_set_def |
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306 { |
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307 htab_t GTY((param_is (struct cgraph_node_set_element_def))) hashtab; |
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308 VEC(cgraph_node_ptr, gc) *nodes; |
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309 PTR GTY ((skip)) aux; |
| 0 | 310 }; |
| 311 | |
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312 typedef struct varpool_node *varpool_node_ptr; |
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313 |
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314 DEF_VEC_P(varpool_node_ptr); |
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315 DEF_VEC_ALLOC_P(varpool_node_ptr,heap); |
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316 DEF_VEC_ALLOC_P(varpool_node_ptr,gc); |
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317 |
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318 /* A varpool node set is a collection of varpool nodes. A varpool node |
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319 can appear in multiple sets. */ |
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320 struct GTY(()) varpool_node_set_def |
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321 { |
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322 htab_t GTY((param_is (struct varpool_node_set_element_def))) hashtab; |
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323 VEC(varpool_node_ptr, gc) *nodes; |
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324 PTR GTY ((skip)) aux; |
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325 }; |
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326 |
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327 typedef struct cgraph_node_set_def *cgraph_node_set; |
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328 |
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329 DEF_VEC_P(cgraph_node_set); |
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330 DEF_VEC_ALLOC_P(cgraph_node_set,gc); |
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331 DEF_VEC_ALLOC_P(cgraph_node_set,heap); |
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332 |
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333 typedef struct varpool_node_set_def *varpool_node_set; |
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334 |
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335 DEF_VEC_P(varpool_node_set); |
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336 DEF_VEC_ALLOC_P(varpool_node_set,gc); |
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337 DEF_VEC_ALLOC_P(varpool_node_set,heap); |
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338 |
|
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339 /* A cgraph node set element contains an index in the vector of nodes in |
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340 the set. */ |
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341 struct GTY(()) cgraph_node_set_element_def |
| 0 | 342 { |
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343 struct cgraph_node *node; |
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344 HOST_WIDE_INT index; |
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345 }; |
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346 |
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347 typedef struct cgraph_node_set_element_def *cgraph_node_set_element; |
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348 typedef const struct cgraph_node_set_element_def *const_cgraph_node_set_element; |
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349 |
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350 /* Iterator structure for cgraph node sets. */ |
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351 typedef struct |
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352 { |
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353 cgraph_node_set set; |
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354 unsigned index; |
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355 } cgraph_node_set_iterator; |
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356 |
|
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357 /* A varpool node set element contains an index in the vector of nodes in |
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358 the set. */ |
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359 struct GTY(()) varpool_node_set_element_def |
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360 { |
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361 struct varpool_node *node; |
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362 HOST_WIDE_INT index; |
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363 }; |
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364 |
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365 typedef struct varpool_node_set_element_def *varpool_node_set_element; |
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366 typedef const struct varpool_node_set_element_def *const_varpool_node_set_element; |
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367 |
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368 /* Iterator structure for varpool node sets. */ |
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369 typedef struct |
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370 { |
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371 varpool_node_set set; |
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372 unsigned index; |
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373 } varpool_node_set_iterator; |
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374 |
|
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375 #define DEFCIFCODE(code, string) CIF_ ## code, |
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376 /* Reasons for inlining failures. */ |
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377 typedef enum { |
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378 #include "cif-code.def" |
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379 CIF_N_REASONS |
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380 } cgraph_inline_failed_t; |
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381 |
|
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382 /* Structure containing additional information about an indirect call. */ |
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383 |
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384 struct GTY(()) cgraph_indirect_call_info |
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385 { |
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386 /* Offset accumulated from ancestor jump functions of inlined call graph |
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387 edges. */ |
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388 HOST_WIDE_INT anc_offset; |
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389 /* OBJ_TYPE_REF_TOKEN of a polymorphic call (if polymorphic is set). */ |
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390 HOST_WIDE_INT otr_token; |
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391 /* Type of the object from OBJ_TYPE_REF_OBJECT. */ |
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392 tree otr_type; |
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393 /* Index of the parameter that is called. */ |
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394 int param_index; |
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395 /* ECF flags determined from the caller. */ |
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396 int ecf_flags; |
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397 |
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398 /* Set when the call is a virtual call with the parameter being the |
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399 associated object pointer rather than a simple direct call. */ |
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400 unsigned polymorphic : 1; |
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401 }; |
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402 |
|
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403 struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"))) cgraph_edge { |
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404 /* Expected number of executions: calculated in profile.c. */ |
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405 gcov_type count; |
| 0 | 406 struct cgraph_node *caller; |
| 407 struct cgraph_node *callee; | |
| 408 struct cgraph_edge *prev_caller; | |
| 409 struct cgraph_edge *next_caller; | |
| 410 struct cgraph_edge *prev_callee; | |
| 411 struct cgraph_edge *next_callee; | |
| 412 gimple call_stmt; | |
|
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413 /* Additional information about an indirect call. Not cleared when an edge |
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414 becomes direct. */ |
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415 struct cgraph_indirect_call_info *indirect_info; |
| 0 | 416 PTR GTY ((skip (""))) aux; |
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417 /* When equal to CIF_OK, inline this call. Otherwise, points to the |
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418 explanation why function was not inlined. */ |
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419 cgraph_inline_failed_t inline_failed; |
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420 /* The stmt_uid of call_stmt. This is used by LTO to recover the call_stmt |
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421 when the function is serialized in. */ |
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422 unsigned int lto_stmt_uid; |
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423 /* Expected frequency of executions within the function. |
| 0 | 424 When set to CGRAPH_FREQ_BASE, the edge is expected to be called once |
| 425 per function call. The range is 0 to CGRAPH_FREQ_MAX. */ | |
| 426 int frequency; | |
|
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427 /* Unique id of the edge. */ |
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428 int uid; |
| 0 | 429 /* Depth of loop nest, 1 means no loop nest. */ |
|
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430 unsigned short int loop_nest; |
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431 /* Whether this edge was made direct by indirect inlining. */ |
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432 unsigned int indirect_inlining_edge : 1; |
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433 /* Whether this edge describes an indirect call with an undetermined |
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434 callee. */ |
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435 unsigned int indirect_unknown_callee : 1; |
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436 /* Whether this edge is still a dangling */ |
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437 /* True if the corresponding CALL stmt cannot be inlined. */ |
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438 unsigned int call_stmt_cannot_inline_p : 1; |
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439 /* Can this call throw externally? */ |
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440 unsigned int can_throw_external : 1; |
| 0 | 441 }; |
| 442 | |
| 443 #define CGRAPH_FREQ_BASE 1000 | |
| 444 #define CGRAPH_FREQ_MAX 100000 | |
| 445 | |
| 446 typedef struct cgraph_edge *cgraph_edge_p; | |
| 447 | |
| 448 DEF_VEC_P(cgraph_edge_p); | |
| 449 DEF_VEC_ALLOC_P(cgraph_edge_p,heap); | |
| 450 | |
| 451 /* The varpool data structure. | |
| 452 Each static variable decl has assigned varpool_node. */ | |
| 453 | |
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454 struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) varpool_node { |
| 0 | 455 tree decl; |
| 456 /* Pointer to the next function in varpool_nodes. */ | |
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457 struct varpool_node *next, *prev; |
| 0 | 458 /* Pointer to the next function in varpool_nodes_queue. */ |
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459 struct varpool_node *next_needed, *prev_needed; |
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460 /* For normal nodes a pointer to the first extra name alias. For alias |
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461 nodes a pointer to the normal node. */ |
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462 struct varpool_node *extra_name; |
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463 /* Circular list of nodes in the same comdat group if non-NULL. */ |
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464 struct varpool_node *same_comdat_group; |
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465 struct ipa_ref_list ref_list; |
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466 PTR GTY ((skip)) aux; |
| 0 | 467 /* Ordering of all cgraph nodes. */ |
| 468 int order; | |
| 469 | |
| 470 /* Set when function must be output - it is externally visible | |
| 471 or its address is taken. */ | |
| 472 unsigned needed : 1; | |
| 473 /* Needed variables might become dead by optimization. This flag | |
| 474 forces the variable to be output even if it appears dead otherwise. */ | |
| 475 unsigned force_output : 1; | |
| 476 /* Set once the variable has been instantiated and its callee | |
| 477 lists created. */ | |
| 478 unsigned analyzed : 1; | |
| 479 /* Set once it has been finalized so we consider it to be output. */ | |
| 480 unsigned finalized : 1; | |
| 481 /* Set when variable is scheduled to be assembled. */ | |
| 482 unsigned output : 1; | |
| 483 /* Set when function is visible by other units. */ | |
| 484 unsigned externally_visible : 1; | |
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485 /* Set for aliases once they got through assemble_alias. Also set for |
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486 extra name aliases in varpool_extra_name_alias. */ |
| 0 | 487 unsigned alias : 1; |
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488 /* Set when variable is used from other LTRANS partition. */ |
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489 unsigned used_from_other_partition : 1; |
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490 /* Set when variable is available in the other LTRANS partition. */ |
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491 unsigned in_other_partition : 1; |
| 0 | 492 }; |
| 493 | |
| 494 /* Every top level asm statement is put into a cgraph_asm_node. */ | |
| 495 | |
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496 struct GTY(()) cgraph_asm_node { |
| 0 | 497 /* Next asm node. */ |
| 498 struct cgraph_asm_node *next; | |
| 499 /* String for this asm node. */ | |
| 500 tree asm_str; | |
| 501 /* Ordering of all cgraph nodes. */ | |
| 502 int order; | |
| 503 }; | |
| 504 | |
| 505 extern GTY(()) struct cgraph_node *cgraph_nodes; | |
| 506 extern GTY(()) int cgraph_n_nodes; | |
| 507 extern GTY(()) int cgraph_max_uid; | |
| 508 extern GTY(()) int cgraph_edge_max_uid; | |
| 509 extern GTY(()) int cgraph_max_pid; | |
| 510 extern bool cgraph_global_info_ready; | |
| 511 enum cgraph_state | |
| 512 { | |
| 513 /* Callgraph is being constructed. It is safe to add new functions. */ | |
| 514 CGRAPH_STATE_CONSTRUCTION, | |
| 515 /* Callgraph is built and IPA passes are being run. */ | |
| 516 CGRAPH_STATE_IPA, | |
| 517 /* Callgraph is built and all functions are transformed to SSA form. */ | |
| 518 CGRAPH_STATE_IPA_SSA, | |
| 519 /* Functions are now ordered and being passed to RTL expanders. */ | |
| 520 CGRAPH_STATE_EXPANSION, | |
| 521 /* All cgraph expansion is done. */ | |
| 522 CGRAPH_STATE_FINISHED | |
| 523 }; | |
| 524 extern enum cgraph_state cgraph_state; | |
| 525 extern bool cgraph_function_flags_ready; | |
| 526 extern GTY(()) struct cgraph_node *cgraph_nodes_queue; | |
| 527 extern GTY(()) struct cgraph_node *cgraph_new_nodes; | |
| 528 | |
| 529 extern GTY(()) struct cgraph_asm_node *cgraph_asm_nodes; | |
| 530 extern GTY(()) int cgraph_order; | |
| 531 | |
| 532 /* In cgraph.c */ | |
| 533 void dump_cgraph (FILE *); | |
| 534 void debug_cgraph (void); | |
| 535 void dump_cgraph_node (FILE *, struct cgraph_node *); | |
| 536 void debug_cgraph_node (struct cgraph_node *); | |
| 537 void cgraph_insert_node_to_hashtable (struct cgraph_node *node); | |
| 538 void cgraph_remove_edge (struct cgraph_edge *); | |
| 539 void cgraph_remove_node (struct cgraph_node *); | |
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540 void cgraph_remove_node_and_inline_clones (struct cgraph_node *); |
| 0 | 541 void cgraph_release_function_body (struct cgraph_node *); |
| 542 void cgraph_node_remove_callees (struct cgraph_node *node); | |
| 543 struct cgraph_edge *cgraph_create_edge (struct cgraph_node *, | |
| 544 struct cgraph_node *, | |
| 545 gimple, gcov_type, int, int); | |
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546 struct cgraph_edge *cgraph_create_indirect_edge (struct cgraph_node *, gimple, int, |
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547 gcov_type, int, int); |
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548 struct cgraph_node * cgraph_get_node (tree); |
| 0 | 549 struct cgraph_node *cgraph_node (tree); |
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550 bool cgraph_same_body_alias (tree, tree); |
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551 void cgraph_add_thunk (tree, tree, bool, HOST_WIDE_INT, HOST_WIDE_INT, tree, tree); |
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552 void cgraph_remove_same_body_alias (struct cgraph_node *); |
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553 struct cgraph_node *cgraph_node_for_asm (tree); |
| 0 | 554 struct cgraph_edge *cgraph_edge (struct cgraph_node *, gimple); |
| 555 void cgraph_set_call_stmt (struct cgraph_edge *, gimple); | |
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556 void cgraph_set_call_stmt_including_clones (struct cgraph_node *, gimple, gimple); |
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557 void cgraph_create_edge_including_clones (struct cgraph_node *, |
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558 struct cgraph_node *, |
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559 gimple, gimple, gcov_type, int, int, |
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560 cgraph_inline_failed_t); |
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561 void cgraph_update_edges_for_call_stmt (gimple, tree, gimple); |
| 0 | 562 struct cgraph_local_info *cgraph_local_info (tree); |
| 563 struct cgraph_global_info *cgraph_global_info (tree); | |
| 564 struct cgraph_rtl_info *cgraph_rtl_info (tree); | |
| 565 const char * cgraph_node_name (struct cgraph_node *); | |
| 566 struct cgraph_edge * cgraph_clone_edge (struct cgraph_edge *, | |
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567 struct cgraph_node *, gimple, |
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568 unsigned, gcov_type, int, int, bool); |
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569 struct cgraph_node * cgraph_clone_node (struct cgraph_node *, tree, gcov_type, int, |
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570 int, bool, VEC(cgraph_edge_p,heap) *); |
| 0 | 571 |
| 572 void cgraph_redirect_edge_callee (struct cgraph_edge *, struct cgraph_node *); | |
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573 void cgraph_make_edge_direct (struct cgraph_edge *, struct cgraph_node *); |
| 0 | 574 |
| 575 struct cgraph_asm_node *cgraph_add_asm_node (tree); | |
| 576 | |
| 577 bool cgraph_function_possibly_inlined_p (tree); | |
| 578 void cgraph_unnest_node (struct cgraph_node *); | |
| 579 | |
| 580 enum availability cgraph_function_body_availability (struct cgraph_node *); | |
| 581 void cgraph_add_new_function (tree, bool); | |
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582 const char* cgraph_inline_failed_string (cgraph_inline_failed_t); |
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583 struct cgraph_node * cgraph_create_virtual_clone (struct cgraph_node *old_node, |
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584 VEC(cgraph_edge_p,heap)*, |
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585 VEC(ipa_replace_map_p,gc)* tree_map, |
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586 bitmap args_to_skip); |
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587 |
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588 void cgraph_set_nothrow_flag (struct cgraph_node *, bool); |
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589 void cgraph_set_readonly_flag (struct cgraph_node *, bool); |
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590 void cgraph_set_pure_flag (struct cgraph_node *, bool); |
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591 void cgraph_set_looping_const_or_pure_flag (struct cgraph_node *, bool); |
| 0 | 592 |
| 593 /* In cgraphunit.c */ | |
| 594 void cgraph_finalize_function (tree, bool); | |
| 595 void cgraph_mark_if_needed (tree); | |
| 596 void cgraph_finalize_compilation_unit (void); | |
| 597 void cgraph_optimize (void); | |
| 598 void cgraph_mark_needed_node (struct cgraph_node *); | |
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599 void cgraph_mark_address_taken_node (struct cgraph_node *); |
| 0 | 600 void cgraph_mark_reachable_node (struct cgraph_node *); |
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601 bool cgraph_inline_p (struct cgraph_edge *, cgraph_inline_failed_t *reason); |
| 0 | 602 bool cgraph_preserve_function_body_p (tree); |
| 603 void verify_cgraph (void); | |
| 604 void verify_cgraph_node (struct cgraph_node *); | |
| 605 void cgraph_build_static_cdtor (char which, tree body, int priority); | |
| 606 void cgraph_reset_static_var_maps (void); | |
| 607 void init_cgraph (void); | |
| 608 struct cgraph_node *cgraph_function_versioning (struct cgraph_node *, | |
| 609 VEC(cgraph_edge_p,heap)*, | |
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610 VEC(ipa_replace_map_p,gc)*, |
| 0 | 611 bitmap); |
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612 void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap); |
| 0 | 613 struct cgraph_node *save_inline_function_body (struct cgraph_node *); |
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614 void record_references_in_initializer (tree, bool); |
| 0 | 615 bool cgraph_process_new_functions (void); |
| 616 | |
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617 bool cgraph_decide_is_function_needed (struct cgraph_node *, tree); |
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618 |
| 0 | 619 typedef void (*cgraph_edge_hook)(struct cgraph_edge *, void *); |
| 620 typedef void (*cgraph_node_hook)(struct cgraph_node *, void *); | |
| 621 typedef void (*cgraph_2edge_hook)(struct cgraph_edge *, struct cgraph_edge *, | |
| 622 void *); | |
| 623 typedef void (*cgraph_2node_hook)(struct cgraph_node *, struct cgraph_node *, | |
| 624 void *); | |
| 625 struct cgraph_edge_hook_list; | |
| 626 struct cgraph_node_hook_list; | |
| 627 struct cgraph_2edge_hook_list; | |
| 628 struct cgraph_2node_hook_list; | |
| 629 struct cgraph_edge_hook_list *cgraph_add_edge_removal_hook (cgraph_edge_hook, void *); | |
| 630 void cgraph_remove_edge_removal_hook (struct cgraph_edge_hook_list *); | |
| 631 struct cgraph_node_hook_list *cgraph_add_node_removal_hook (cgraph_node_hook, | |
| 632 void *); | |
| 633 void cgraph_remove_node_removal_hook (struct cgraph_node_hook_list *); | |
| 634 struct cgraph_node_hook_list *cgraph_add_function_insertion_hook (cgraph_node_hook, | |
| 635 void *); | |
| 636 void cgraph_remove_function_insertion_hook (struct cgraph_node_hook_list *); | |
| 637 void cgraph_call_function_insertion_hooks (struct cgraph_node *node); | |
| 638 struct cgraph_2edge_hook_list *cgraph_add_edge_duplication_hook (cgraph_2edge_hook, void *); | |
| 639 void cgraph_remove_edge_duplication_hook (struct cgraph_2edge_hook_list *); | |
| 640 struct cgraph_2node_hook_list *cgraph_add_node_duplication_hook (cgraph_2node_hook, void *); | |
| 641 void cgraph_remove_node_duplication_hook (struct cgraph_2node_hook_list *); | |
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642 void cgraph_materialize_all_clones (void); |
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643 gimple cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *); |
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644 bool cgraph_propagate_frequency (struct cgraph_node *node); |
| 0 | 645 /* In cgraphbuild.c */ |
| 646 unsigned int rebuild_cgraph_edges (void); | |
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647 void cgraph_rebuild_references (void); |
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648 void reset_inline_failed (struct cgraph_node *); |
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649 int compute_call_stmt_bb_frequency (tree, basic_block bb); |
| 0 | 650 |
| 651 /* In ipa.c */ | |
| 652 bool cgraph_remove_unreachable_nodes (bool, FILE *); | |
| 653 int cgraph_postorder (struct cgraph_node **); | |
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654 cgraph_node_set cgraph_node_set_new (void); |
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655 cgraph_node_set_iterator cgraph_node_set_find (cgraph_node_set, |
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656 struct cgraph_node *); |
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657 void cgraph_node_set_add (cgraph_node_set, struct cgraph_node *); |
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658 void cgraph_node_set_remove (cgraph_node_set, struct cgraph_node *); |
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659 void dump_cgraph_node_set (FILE *, cgraph_node_set); |
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660 void debug_cgraph_node_set (cgraph_node_set); |
| 0 | 661 |
|
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662 varpool_node_set varpool_node_set_new (void); |
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663 varpool_node_set_iterator varpool_node_set_find (varpool_node_set, |
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664 struct varpool_node *); |
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665 void varpool_node_set_add (varpool_node_set, struct varpool_node *); |
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666 void varpool_node_set_remove (varpool_node_set, struct varpool_node *); |
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667 void dump_varpool_node_set (FILE *, varpool_node_set); |
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668 void debug_varpool_node_set (varpool_node_set); |
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669 void ipa_discover_readonly_nonaddressable_vars (void); |
|
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670 |
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671 /* In predict.c */ |
| 0 | 672 bool cgraph_maybe_hot_edge_p (struct cgraph_edge *e); |
| 673 | |
| 674 /* In varpool.c */ | |
| 675 extern GTY(()) struct varpool_node *varpool_nodes_queue; | |
| 676 extern GTY(()) struct varpool_node *varpool_nodes; | |
| 677 | |
| 678 struct varpool_node *varpool_node (tree); | |
| 679 struct varpool_node *varpool_node_for_asm (tree asmname); | |
| 680 void varpool_mark_needed_node (struct varpool_node *); | |
|
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681 void debug_varpool (void); |
| 0 | 682 void dump_varpool (FILE *); |
| 683 void dump_varpool_node (FILE *, struct varpool_node *); | |
| 684 | |
| 685 void varpool_finalize_decl (tree); | |
| 686 bool decide_is_variable_needed (struct varpool_node *, tree); | |
| 687 enum availability cgraph_variable_initializer_availability (struct varpool_node *); | |
|
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688 void cgraph_make_decl_local (tree); |
|
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689 void cgraph_make_node_local (struct cgraph_node *); |
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690 bool cgraph_node_can_be_local_p (struct cgraph_node *); |
| 0 | 691 |
|
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692 |
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693 struct varpool_node * varpool_get_node (tree decl); |
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694 void varpool_remove_node (struct varpool_node *node); |
| 0 | 695 bool varpool_assemble_pending_decls (void); |
| 696 bool varpool_assemble_decl (struct varpool_node *node); | |
| 697 bool varpool_analyze_pending_decls (void); | |
| 698 void varpool_remove_unreferenced_decls (void); | |
| 699 void varpool_empty_needed_queue (void); | |
|
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700 bool varpool_extra_name_alias (tree, tree); |
|
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701 const char * varpool_node_name (struct varpool_node *node); |
|
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702 void varpool_reset_queue (void); |
| 0 | 703 |
| 704 /* Walk all reachable static variables. */ | |
| 705 #define FOR_EACH_STATIC_VARIABLE(node) \ | |
| 706 for ((node) = varpool_nodes_queue; (node); (node) = (node)->next_needed) | |
| 707 | |
| 708 /* Return first reachable static variable with initializer. */ | |
| 709 static inline struct varpool_node * | |
| 710 varpool_first_static_initializer (void) | |
| 711 { | |
| 712 struct varpool_node *node; | |
| 713 for (node = varpool_nodes_queue; node; node = node->next_needed) | |
| 714 { | |
| 715 gcc_assert (TREE_CODE (node->decl) == VAR_DECL); | |
| 716 if (DECL_INITIAL (node->decl)) | |
| 717 return node; | |
| 718 } | |
| 719 return NULL; | |
| 720 } | |
| 721 | |
| 722 /* Return next reachable static variable with initializer after NODE. */ | |
| 723 static inline struct varpool_node * | |
| 724 varpool_next_static_initializer (struct varpool_node *node) | |
| 725 { | |
| 726 for (node = node->next_needed; node; node = node->next_needed) | |
| 727 { | |
| 728 gcc_assert (TREE_CODE (node->decl) == VAR_DECL); | |
| 729 if (DECL_INITIAL (node->decl)) | |
| 730 return node; | |
| 731 } | |
| 732 return NULL; | |
| 733 } | |
| 734 | |
| 735 /* Walk all static variables with initializer set. */ | |
| 736 #define FOR_EACH_STATIC_INITIALIZER(node) \ | |
| 737 for ((node) = varpool_first_static_initializer (); (node); \ | |
| 738 (node) = varpool_next_static_initializer (node)) | |
| 739 | |
| 740 /* In ipa-inline.c */ | |
| 741 void cgraph_clone_inlined_nodes (struct cgraph_edge *, bool, bool); | |
| 742 unsigned int compute_inline_parameters (struct cgraph_node *); | |
| 743 | |
| 744 | |
| 745 /* Create a new static variable of type TYPE. */ | |
| 746 tree add_new_static_var (tree type); | |
| 747 | |
|
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748 /* Return true if iterator CSI points to nothing. */ |
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749 static inline bool |
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750 csi_end_p (cgraph_node_set_iterator csi) |
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751 { |
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752 return csi.index >= VEC_length (cgraph_node_ptr, csi.set->nodes); |
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753 } |
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754 |
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755 /* Advance iterator CSI. */ |
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756 static inline void |
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757 csi_next (cgraph_node_set_iterator *csi) |
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758 { |
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759 csi->index++; |
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760 } |
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761 |
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762 /* Return the node pointed to by CSI. */ |
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763 static inline struct cgraph_node * |
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764 csi_node (cgraph_node_set_iterator csi) |
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765 { |
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766 return VEC_index (cgraph_node_ptr, csi.set->nodes, csi.index); |
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767 } |
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768 |
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769 /* Return an iterator to the first node in SET. */ |
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770 static inline cgraph_node_set_iterator |
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771 csi_start (cgraph_node_set set) |
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772 { |
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773 cgraph_node_set_iterator csi; |
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774 |
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775 csi.set = set; |
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776 csi.index = 0; |
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777 return csi; |
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778 } |
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779 |
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780 /* Return true if SET contains NODE. */ |
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781 static inline bool |
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782 cgraph_node_in_set_p (struct cgraph_node *node, cgraph_node_set set) |
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783 { |
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784 cgraph_node_set_iterator csi; |
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785 csi = cgraph_node_set_find (set, node); |
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786 return !csi_end_p (csi); |
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787 } |
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788 |
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789 /* Return number of nodes in SET. */ |
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790 static inline size_t |
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791 cgraph_node_set_size (cgraph_node_set set) |
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792 { |
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793 return htab_elements (set->hashtab); |
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794 } |
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795 |
|
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796 /* Return true if iterator VSI points to nothing. */ |
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797 static inline bool |
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798 vsi_end_p (varpool_node_set_iterator vsi) |
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799 { |
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800 return vsi.index >= VEC_length (varpool_node_ptr, vsi.set->nodes); |
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801 } |
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802 |
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803 /* Advance iterator VSI. */ |
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804 static inline void |
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805 vsi_next (varpool_node_set_iterator *vsi) |
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806 { |
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807 vsi->index++; |
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808 } |
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809 |
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810 /* Return the node pointed to by VSI. */ |
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811 static inline struct varpool_node * |
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812 vsi_node (varpool_node_set_iterator vsi) |
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813 { |
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814 return VEC_index (varpool_node_ptr, vsi.set->nodes, vsi.index); |
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815 } |
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816 |
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817 /* Return an iterator to the first node in SET. */ |
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818 static inline varpool_node_set_iterator |
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819 vsi_start (varpool_node_set set) |
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820 { |
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821 varpool_node_set_iterator vsi; |
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822 |
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823 vsi.set = set; |
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824 vsi.index = 0; |
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825 return vsi; |
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826 } |
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827 |
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828 /* Return true if SET contains NODE. */ |
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829 static inline bool |
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830 varpool_node_in_set_p (struct varpool_node *node, varpool_node_set set) |
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831 { |
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832 varpool_node_set_iterator vsi; |
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833 vsi = varpool_node_set_find (set, node); |
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834 return !vsi_end_p (vsi); |
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835 } |
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836 |
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837 /* Return number of nodes in SET. */ |
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838 static inline size_t |
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839 varpool_node_set_size (varpool_node_set set) |
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840 { |
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841 return htab_elements (set->hashtab); |
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842 } |
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|
843 |
|
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844 /* Uniquize all constants that appear in memory. |
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845 Each constant in memory thus far output is recorded |
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846 in `const_desc_table'. */ |
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847 |
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848 struct GTY(()) constant_descriptor_tree { |
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849 /* A MEM for the constant. */ |
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850 rtx rtl; |
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851 |
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852 /* The value of the constant. */ |
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853 tree value; |
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854 |
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855 /* Hash of value. Computing the hash from value each time |
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856 hashfn is called can't work properly, as that means recursive |
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857 use of the hash table during hash table expansion. */ |
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858 hashval_t hash; |
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859 }; |
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860 |
|
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861 /* Return true if set is nonempty. */ |
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862 static inline bool |
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863 cgraph_node_set_nonempty_p (cgraph_node_set set) |
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864 { |
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865 return VEC_length (cgraph_node_ptr, set->nodes); |
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866 } |
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867 |
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868 /* Return true if set is nonempty. */ |
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869 static inline bool |
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870 varpool_node_set_nonempty_p (varpool_node_set set) |
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871 { |
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872 return VEC_length (varpool_node_ptr, set->nodes); |
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873 } |
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|
874 |
|
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875 /* Return true when function NODE is only called directly. |
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876 i.e. it is not externally visible, address was not taken and |
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877 it is not used in any other non-standard way. */ |
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|
878 |
|
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879 static inline bool |
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880 cgraph_only_called_directly_p (struct cgraph_node *node) |
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881 { |
|
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882 return !node->needed && !node->address_taken && !node->local.externally_visible; |
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883 } |
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|
884 |
|
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885 /* Return true when function NODE can be removed from callgraph |
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886 if all direct calls are eliminated. */ |
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887 |
|
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888 static inline bool |
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889 cgraph_can_remove_if_no_direct_calls_and_refs_p (struct cgraph_node *node) |
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890 { |
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891 return (!node->needed && !node->reachable_from_other_partition |
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892 && (DECL_COMDAT (node->decl) || !node->local.externally_visible)); |
|
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893 } |
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894 |
|
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895 /* Return true when function NODE can be removed from callgraph |
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896 if all direct calls are eliminated. */ |
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897 |
|
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898 static inline bool |
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899 cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node) |
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900 { |
|
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901 return !node->address_taken && cgraph_can_remove_if_no_direct_calls_and_refs_p (node); |
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902 } |
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903 |
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904 /* Return true when all references to VNODE must be visible in ipa_ref_list. |
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905 i.e. if the variable is not externally visible or not used in some magic |
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906 way (asm statement or such). |
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907 The magic uses are all sumarized in force_output flag. */ |
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908 |
|
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909 static inline bool |
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910 varpool_all_refs_explicit_p (struct varpool_node *vnode) |
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911 { |
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912 return (!vnode->externally_visible |
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913 && !vnode->used_from_other_partition |
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914 && !vnode->force_output); |
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915 } |
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916 |
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917 /* Constant pool accessor function. */ |
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918 htab_t constant_pool_htab (void); |
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919 |
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920 /* FIXME: inappropriate dependency of cgraph on IPA. */ |
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921 #include "ipa-ref-inline.h" |
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922 |
| 0 | 923 #endif /* GCC_CGRAPH_H */ |