Mercurial > hg > CbC > CbC_gcc
annotate gcc/cgraph.h @ 100:29a62213c1d0
add "code" syntax
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 05 Feb 2012 10:24:11 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Callgraph handling code. |
|
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2 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 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 "plugin-api.h" |
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26 #include "vec.h" |
| 0 | 27 #include "tree.h" |
| 28 #include "basic-block.h" | |
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29 #include "function.h" |
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30 #include "ipa-ref.h" /* FIXME: inappropriate dependency of cgraph on IPA. */ |
| 0 | 31 |
| 32 enum availability | |
| 33 { | |
| 34 /* Not yet set by cgraph_function_body_availability. */ | |
| 35 AVAIL_UNSET, | |
| 36 /* Function body/variable initializer is unknown. */ | |
| 37 AVAIL_NOT_AVAILABLE, | |
| 38 /* Function body/variable initializer is known but might be replaced | |
| 39 by a different one from other compilation unit and thus needs to | |
| 40 be dealt with a care. Like AVAIL_NOT_AVAILABLE it can have | |
| 41 arbitrary side effects on escaping variables and functions, while | |
| 42 like AVAILABLE it might access static variables. */ | |
| 43 AVAIL_OVERWRITABLE, | |
| 44 /* Function body/variable initializer is known and will be used in final | |
| 45 program. */ | |
| 46 AVAIL_AVAILABLE, | |
| 47 /* Function body/variable initializer is known and all it's uses are explicitly | |
| 48 visible within current unit (ie it's address is never taken and it is not | |
| 49 exported to other units). | |
| 50 Currently used only for functions. */ | |
| 51 AVAIL_LOCAL | |
| 52 }; | |
| 53 | |
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54 /* This is the information that is put into the cgraph local structure |
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55 to recover a function. */ |
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56 struct lto_file_decl_data; |
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57 |
| 0 | 58 extern const char * const cgraph_availability_names[]; |
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59 extern const char * const ld_plugin_symbol_resolution_names[]; |
| 0 | 60 |
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61 /* Function inlining information. */ |
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62 |
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63 struct GTY(()) inline_summary |
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64 { |
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65 /* Estimated stack frame consumption by the function. */ |
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66 HOST_WIDE_INT estimated_self_stack_size; |
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67 |
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68 /* Size of the function body. */ |
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69 int self_size; |
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70 /* How many instructions are likely going to disappear after inlining. */ |
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71 int size_inlining_benefit; |
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72 /* Estimated time spent executing the function body. */ |
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73 int self_time; |
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74 /* How much time is going to be saved by inlining. */ |
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75 int time_inlining_benefit; |
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76 }; |
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77 |
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78 /* Information about thunk, used only for same body aliases. */ |
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79 |
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80 struct GTY(()) cgraph_thunk_info { |
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81 /* Information about the thunk. */ |
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82 HOST_WIDE_INT fixed_offset; |
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83 HOST_WIDE_INT virtual_value; |
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84 tree alias; |
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85 bool this_adjusting; |
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86 bool virtual_offset_p; |
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87 /* Set to true when alias node is thunk. */ |
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88 bool thunk_p; |
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89 }; |
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90 |
| 0 | 91 /* Information about the function collected locally. |
| 92 Available after function is analyzed. */ | |
| 93 | |
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94 struct GTY(()) cgraph_local_info { |
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95 /* File stream where this node is being written to. */ |
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96 struct lto_file_decl_data * lto_file_data; |
| 0 | 97 |
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98 struct inline_summary inline_summary; |
| 0 | 99 |
| 100 /* Set when function function is visible in current compilation unit only | |
| 101 and its address is never taken. */ | |
| 102 unsigned local : 1; | |
| 103 | |
| 104 /* Set when function is visible by other units. */ | |
| 105 unsigned externally_visible : 1; | |
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106 |
| 0 | 107 /* Set once it has been finalized so we consider it to be output. */ |
| 108 unsigned finalized : 1; | |
| 109 | |
| 110 /* False when there something makes inlining impossible (such as va_arg). */ | |
| 111 unsigned inlinable : 1; | |
| 112 | |
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113 /* False when there something makes versioning impossible. |
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114 Currently computed and used only by ipa-cp. */ |
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115 unsigned versionable : 1; |
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116 |
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117 /* False when function calling convention and signature can not be changed. |
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118 This is the case when __builtin_apply_args is used. */ |
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119 unsigned can_change_signature : 1; |
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120 |
| 0 | 121 /* True when function should be inlined independently on its size. */ |
| 122 unsigned disregard_inline_limits : 1; | |
| 123 | |
| 124 /* True when the function has been originally extern inline, but it is | |
| 125 redefined now. */ | |
| 126 unsigned redefined_extern_inline : 1; | |
| 127 | |
| 128 /* True if the function is going to be emitted in some other translation | |
| 129 unit, referenced from vtable. */ | |
| 130 unsigned vtable_method : 1; | |
| 131 }; | |
| 132 | |
| 133 /* Information about the function that needs to be computed globally | |
| 134 once compilation is finished. Available only with -funit-at-a-time. */ | |
| 135 | |
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136 struct GTY(()) cgraph_global_info { |
| 0 | 137 /* Estimated stack frame consumption by the function. */ |
| 138 HOST_WIDE_INT estimated_stack_size; | |
| 139 /* Expected offset of the stack frame of inlined function. */ | |
| 140 HOST_WIDE_INT stack_frame_offset; | |
| 141 | |
| 142 /* For inline clones this points to the function they will be | |
| 143 inlined into. */ | |
| 144 struct cgraph_node *inlined_to; | |
| 145 | |
| 146 /* Estimated size of the function after inlining. */ | |
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147 int time; |
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148 int size; |
| 0 | 149 |
| 150 /* Estimated growth after inlining. INT_MIN if not computed. */ | |
| 151 int estimated_growth; | |
| 152 }; | |
| 153 | |
| 154 /* Information about the function that is propagated by the RTL backend. | |
| 155 Available only for functions that has been already assembled. */ | |
| 156 | |
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157 struct GTY(()) cgraph_rtl_info { |
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158 unsigned int preferred_incoming_stack_boundary; |
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159 }; |
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160 |
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161 /* Represent which DECL tree (or reference to such tree) |
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162 will be replaced by another tree while versioning. */ |
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163 struct GTY(()) ipa_replace_map |
| 0 | 164 { |
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165 /* The tree that will be replaced. */ |
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166 tree old_tree; |
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167 /* The new (replacing) tree. */ |
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168 tree new_tree; |
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169 /* Parameter number to replace, when old_tree is NULL. */ |
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170 int parm_num; |
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171 /* True when a substitution should be done, false otherwise. */ |
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172 bool replace_p; |
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173 /* True when we replace a reference to old_tree. */ |
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174 bool ref_p; |
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175 }; |
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176 typedef struct ipa_replace_map *ipa_replace_map_p; |
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177 DEF_VEC_P(ipa_replace_map_p); |
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178 DEF_VEC_ALLOC_P(ipa_replace_map_p,gc); |
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179 |
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180 struct GTY(()) cgraph_clone_info |
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181 { |
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182 VEC(ipa_replace_map_p,gc)* tree_map; |
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183 bitmap args_to_skip; |
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184 bitmap combined_args_to_skip; |
| 0 | 185 }; |
| 186 | |
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187 |
| 0 | 188 /* The cgraph data structure. |
| 189 Each function decl has assigned cgraph_node listing callees and callers. */ | |
| 190 | |
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191 struct GTY((chain_next ("%h.next"), chain_prev ("%h.previous"))) cgraph_node { |
| 0 | 192 tree decl; |
| 193 struct cgraph_edge *callees; | |
| 194 struct cgraph_edge *callers; | |
| 195 struct cgraph_node *next; | |
| 196 struct cgraph_node *previous; | |
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197 /* List of edges representing indirect calls with a yet undetermined |
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198 callee. */ |
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199 struct cgraph_edge *indirect_calls; |
| 0 | 200 /* For nested functions points to function the node is nested in. */ |
| 201 struct cgraph_node *origin; | |
| 202 /* Points to first nested function, if any. */ | |
| 203 struct cgraph_node *nested; | |
| 204 /* Pointer to the next function with same origin, if any. */ | |
| 205 struct cgraph_node *next_nested; | |
| 206 /* Pointer to the next function in cgraph_nodes_queue. */ | |
| 207 struct cgraph_node *next_needed; | |
| 208 /* Pointer to the next clone. */ | |
|
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209 struct cgraph_node *next_sibling_clone; |
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210 struct cgraph_node *prev_sibling_clone; |
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211 struct cgraph_node *clones; |
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212 struct cgraph_node *clone_of; |
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213 /* For normal nodes pointer to the list of alias and thunk nodes, |
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214 in alias/thunk nodes pointer to the normal node. */ |
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215 struct cgraph_node *same_body; |
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216 /* Circular list of nodes in the same comdat group if non-NULL. */ |
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217 struct cgraph_node *same_comdat_group; |
| 0 | 218 /* For functions with many calls sites it holds map from call expression |
| 219 to the edge to speed up cgraph_edge function. */ | |
| 220 htab_t GTY((param_is (struct cgraph_edge))) call_site_hash; | |
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221 /* Declaration node used to be clone of. */ |
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222 tree former_clone_of; |
| 0 | 223 |
| 224 PTR GTY ((skip)) aux; | |
| 225 | |
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226 /* Interprocedural passes scheduled to have their transform functions |
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227 applied next time we execute local pass on them. We maintain it |
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228 per-function in order to allow IPA passes to introduce new functions. */ |
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229 VEC(ipa_opt_pass,heap) * GTY((skip)) ipa_transforms_to_apply; |
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230 |
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231 struct ipa_ref_list ref_list; |
| 0 | 232 struct cgraph_local_info local; |
| 233 struct cgraph_global_info global; | |
| 234 struct cgraph_rtl_info rtl; | |
|
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235 struct cgraph_clone_info clone; |
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236 struct cgraph_thunk_info thunk; |
| 0 | 237 |
| 238 /* Expected number of executions: calculated in profile.c. */ | |
| 239 gcov_type count; | |
|
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240 /* How to scale counts at materialization time; used to merge |
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241 LTO units with different number of profile runs. */ |
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242 int count_materialization_scale; |
| 0 | 243 /* Unique id of the node. */ |
| 244 int uid; | |
| 245 /* Ordering of all cgraph nodes. */ | |
| 246 int order; | |
| 247 | |
| 248 /* unique id for profiling. pid is not suitable because of different | |
| 249 number of cfg nodes with -fprofile-generate and -fprofile-use */ | |
| 250 int pid; | |
|
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251 enum ld_plugin_symbol_resolution resolution; |
| 0 | 252 |
|
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253 /* Set when function must be output for some reason. The primary |
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254 use of this flag is to mark functions needed to be output for |
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255 non-standard reason. Functions that are externally visible |
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256 or reachable from functions needed to be output are marked |
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257 by specialized flags. */ |
| 0 | 258 unsigned needed : 1; |
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259 /* Set when function has address taken. |
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260 In current implementation it imply needed flag. */ |
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261 unsigned address_taken : 1; |
| 0 | 262 /* Set when decl is an abstract function pointed to by the |
| 263 ABSTRACT_DECL_ORIGIN of a reachable function. */ | |
| 264 unsigned abstract_and_needed : 1; | |
| 265 /* Set when function is reachable by call from other function | |
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266 that is either reachable or needed. |
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267 This flag is computed at original cgraph construction and then |
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268 updated in cgraph_remove_unreachable_nodes. Note that after |
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269 cgraph_remove_unreachable_nodes cgraph still can contain unreachable |
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270 nodes when they are needed for virtual clone instantiation. */ |
| 0 | 271 unsigned reachable : 1; |
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272 /* Set when function is reachable by call from other LTRANS partition. */ |
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273 unsigned reachable_from_other_partition : 1; |
| 0 | 274 /* Set once the function is lowered (i.e. its CFG is built). */ |
| 275 unsigned lowered : 1; | |
| 276 /* Set once the function has been instantiated and its callee | |
| 277 lists created. */ | |
| 278 unsigned analyzed : 1; | |
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279 /* Set when function is available in the other LTRANS partition. |
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280 During WPA output it is used to mark nodes that are present in |
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281 multiple partitions. */ |
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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 /* True when function can only be called at startup (from static ctor). */ |
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296 unsigned only_called_at_startup : 1; |
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297 /* True when function can only be called at startup (from static dtor). */ |
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298 unsigned only_called_at_exit : 1; |
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299 }; |
| 0 | 300 |
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301 typedef struct cgraph_node *cgraph_node_ptr; |
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302 |
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303 DEF_VEC_P(cgraph_node_ptr); |
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304 DEF_VEC_ALLOC_P(cgraph_node_ptr,heap); |
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305 DEF_VEC_ALLOC_P(cgraph_node_ptr,gc); |
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306 |
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307 /* A cgraph node set is a collection of cgraph nodes. A cgraph node |
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308 can appear in multiple sets. */ |
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309 struct GTY(()) cgraph_node_set_def |
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310 { |
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311 htab_t GTY((param_is (struct cgraph_node_set_element_def))) hashtab; |
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312 VEC(cgraph_node_ptr, gc) *nodes; |
| 0 | 313 }; |
| 314 | |
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315 typedef struct varpool_node *varpool_node_ptr; |
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316 |
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317 DEF_VEC_P(varpool_node_ptr); |
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318 DEF_VEC_ALLOC_P(varpool_node_ptr,heap); |
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319 DEF_VEC_ALLOC_P(varpool_node_ptr,gc); |
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320 |
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321 /* A varpool node set is a collection of varpool nodes. A varpool node |
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322 can appear in multiple sets. */ |
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323 struct GTY(()) varpool_node_set_def |
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324 { |
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325 htab_t GTY((param_is (struct varpool_node_set_element_def))) hashtab; |
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326 VEC(varpool_node_ptr, gc) *nodes; |
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327 }; |
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328 |
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329 typedef struct cgraph_node_set_def *cgraph_node_set; |
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330 |
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331 DEF_VEC_P(cgraph_node_set); |
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332 DEF_VEC_ALLOC_P(cgraph_node_set,gc); |
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333 DEF_VEC_ALLOC_P(cgraph_node_set,heap); |
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334 |
|
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335 typedef struct varpool_node_set_def *varpool_node_set; |
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336 |
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337 DEF_VEC_P(varpool_node_set); |
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338 DEF_VEC_ALLOC_P(varpool_node_set,gc); |
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339 DEF_VEC_ALLOC_P(varpool_node_set,heap); |
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340 |
|
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341 /* A cgraph node set element contains an index in the vector of nodes in |
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342 the set. */ |
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343 struct GTY(()) cgraph_node_set_element_def |
| 0 | 344 { |
|
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345 struct cgraph_node *node; |
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346 HOST_WIDE_INT index; |
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347 }; |
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348 |
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349 typedef struct cgraph_node_set_element_def *cgraph_node_set_element; |
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350 typedef const struct cgraph_node_set_element_def *const_cgraph_node_set_element; |
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351 |
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352 /* Iterator structure for cgraph node sets. */ |
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353 typedef struct |
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354 { |
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355 cgraph_node_set set; |
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356 unsigned index; |
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357 } cgraph_node_set_iterator; |
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358 |
|
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359 /* A varpool node set element contains an index in the vector of nodes in |
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360 the set. */ |
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361 struct GTY(()) varpool_node_set_element_def |
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362 { |
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363 struct varpool_node *node; |
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364 HOST_WIDE_INT index; |
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365 }; |
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366 |
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367 typedef struct varpool_node_set_element_def *varpool_node_set_element; |
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368 typedef const struct varpool_node_set_element_def *const_varpool_node_set_element; |
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369 |
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370 /* Iterator structure for varpool node sets. */ |
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371 typedef struct |
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372 { |
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373 varpool_node_set set; |
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374 unsigned index; |
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375 } varpool_node_set_iterator; |
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376 |
|
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377 #define DEFCIFCODE(code, string) CIF_ ## code, |
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378 /* Reasons for inlining failures. */ |
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379 typedef enum { |
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380 #include "cif-code.def" |
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381 CIF_N_REASONS |
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382 } cgraph_inline_failed_t; |
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383 |
|
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384 /* Structure containing additional information about an indirect call. */ |
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385 |
|
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386 struct GTY(()) cgraph_indirect_call_info |
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387 { |
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388 /* Offset accumulated from ancestor jump functions of inlined call graph |
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389 edges. */ |
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390 HOST_WIDE_INT anc_offset; |
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391 /* OBJ_TYPE_REF_TOKEN of a polymorphic call (if polymorphic is set). */ |
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392 HOST_WIDE_INT otr_token; |
|
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393 /* Delta by which must be added to this parameter to compensate for a skipped |
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394 this adjusting thunk. */ |
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395 HOST_WIDE_INT thunk_delta; |
|
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396 /* Type of the object from OBJ_TYPE_REF_OBJECT. */ |
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397 tree otr_type; |
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398 /* Index of the parameter that is called. */ |
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399 int param_index; |
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400 /* ECF flags determined from the caller. */ |
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401 int ecf_flags; |
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402 |
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403 /* Set when the call is a virtual call with the parameter being the |
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404 associated object pointer rather than a simple direct call. */ |
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405 unsigned polymorphic : 1; |
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406 }; |
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407 |
|
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408 struct GTY((chain_next ("%h.next_caller"), chain_prev ("%h.prev_caller"))) cgraph_edge { |
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409 /* Expected number of executions: calculated in profile.c. */ |
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410 gcov_type count; |
| 0 | 411 struct cgraph_node *caller; |
| 412 struct cgraph_node *callee; | |
| 413 struct cgraph_edge *prev_caller; | |
| 414 struct cgraph_edge *next_caller; | |
| 415 struct cgraph_edge *prev_callee; | |
| 416 struct cgraph_edge *next_callee; | |
| 417 gimple call_stmt; | |
|
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418 /* Additional information about an indirect call. Not cleared when an edge |
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419 becomes direct. */ |
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420 struct cgraph_indirect_call_info *indirect_info; |
| 0 | 421 PTR GTY ((skip (""))) aux; |
|
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422 /* When equal to CIF_OK, inline this call. Otherwise, points to the |
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423 explanation why function was not inlined. */ |
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424 cgraph_inline_failed_t inline_failed; |
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425 /* The stmt_uid of call_stmt. This is used by LTO to recover the call_stmt |
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426 when the function is serialized in. */ |
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427 unsigned int lto_stmt_uid; |
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428 /* Expected frequency of executions within the function. |
| 0 | 429 When set to CGRAPH_FREQ_BASE, the edge is expected to be called once |
| 430 per function call. The range is 0 to CGRAPH_FREQ_MAX. */ | |
| 431 int frequency; | |
|
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432 /* Unique id of the edge. */ |
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433 int uid; |
| 0 | 434 /* Depth of loop nest, 1 means no loop nest. */ |
|
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435 unsigned short int loop_nest; |
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436 /* Whether this edge was made direct by indirect inlining. */ |
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437 unsigned int indirect_inlining_edge : 1; |
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438 /* Whether this edge describes an indirect call with an undetermined |
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439 callee. */ |
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440 unsigned int indirect_unknown_callee : 1; |
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441 /* Whether this edge is still a dangling */ |
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442 /* True if the corresponding CALL stmt cannot be inlined. */ |
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443 unsigned int call_stmt_cannot_inline_p : 1; |
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444 /* Can this call throw externally? */ |
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445 unsigned int can_throw_external : 1; |
| 0 | 446 }; |
| 447 | |
| 448 #define CGRAPH_FREQ_BASE 1000 | |
| 449 #define CGRAPH_FREQ_MAX 100000 | |
| 450 | |
| 451 typedef struct cgraph_edge *cgraph_edge_p; | |
| 452 | |
| 453 DEF_VEC_P(cgraph_edge_p); | |
| 454 DEF_VEC_ALLOC_P(cgraph_edge_p,heap); | |
| 455 | |
| 456 /* The varpool data structure. | |
| 457 Each static variable decl has assigned varpool_node. */ | |
| 458 | |
|
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459 struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) varpool_node { |
| 0 | 460 tree decl; |
| 461 /* Pointer to the next function in varpool_nodes. */ | |
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462 struct varpool_node *next, *prev; |
| 0 | 463 /* Pointer to the next function in varpool_nodes_queue. */ |
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464 struct varpool_node *next_needed, *prev_needed; |
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465 /* For normal nodes a pointer to the first extra name alias. For alias |
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466 nodes a pointer to the normal node. */ |
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467 struct varpool_node *extra_name; |
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468 /* Circular list of nodes in the same comdat group if non-NULL. */ |
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469 struct varpool_node *same_comdat_group; |
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470 struct ipa_ref_list ref_list; |
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471 /* File stream where this node is being written to. */ |
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472 struct lto_file_decl_data * lto_file_data; |
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473 PTR GTY ((skip)) aux; |
| 0 | 474 /* Ordering of all cgraph nodes. */ |
| 475 int order; | |
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476 enum ld_plugin_symbol_resolution resolution; |
| 0 | 477 |
| 478 /* Set when function must be output - it is externally visible | |
| 479 or its address is taken. */ | |
| 480 unsigned needed : 1; | |
| 481 /* Needed variables might become dead by optimization. This flag | |
| 482 forces the variable to be output even if it appears dead otherwise. */ | |
| 483 unsigned force_output : 1; | |
| 484 /* Set once the variable has been instantiated and its callee | |
| 485 lists created. */ | |
| 486 unsigned analyzed : 1; | |
| 487 /* Set once it has been finalized so we consider it to be output. */ | |
| 488 unsigned finalized : 1; | |
| 489 /* Set when variable is scheduled to be assembled. */ | |
| 490 unsigned output : 1; | |
| 491 /* Set when function is visible by other units. */ | |
| 492 unsigned externally_visible : 1; | |
|
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493 /* Set for aliases once they got through assemble_alias. Also set for |
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494 extra name aliases in varpool_extra_name_alias. */ |
| 0 | 495 unsigned alias : 1; |
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496 /* Set when variable is used from other LTRANS partition. */ |
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497 unsigned used_from_other_partition : 1; |
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498 /* Set when variable is available in the other LTRANS partition. |
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499 During WPA output it is used to mark nodes that are present in |
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500 multiple partitions. */ |
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501 unsigned in_other_partition : 1; |
| 0 | 502 }; |
| 503 | |
| 504 /* Every top level asm statement is put into a cgraph_asm_node. */ | |
| 505 | |
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506 struct GTY(()) cgraph_asm_node { |
| 0 | 507 /* Next asm node. */ |
| 508 struct cgraph_asm_node *next; | |
| 509 /* String for this asm node. */ | |
| 510 tree asm_str; | |
| 511 /* Ordering of all cgraph nodes. */ | |
| 512 int order; | |
| 513 }; | |
| 514 | |
| 515 extern GTY(()) struct cgraph_node *cgraph_nodes; | |
| 516 extern GTY(()) int cgraph_n_nodes; | |
| 517 extern GTY(()) int cgraph_max_uid; | |
| 518 extern GTY(()) int cgraph_edge_max_uid; | |
| 519 extern GTY(()) int cgraph_max_pid; | |
| 520 extern bool cgraph_global_info_ready; | |
| 521 enum cgraph_state | |
| 522 { | |
| 523 /* Callgraph is being constructed. It is safe to add new functions. */ | |
| 524 CGRAPH_STATE_CONSTRUCTION, | |
| 525 /* Callgraph is built and IPA passes are being run. */ | |
| 526 CGRAPH_STATE_IPA, | |
| 527 /* Callgraph is built and all functions are transformed to SSA form. */ | |
| 528 CGRAPH_STATE_IPA_SSA, | |
| 529 /* Functions are now ordered and being passed to RTL expanders. */ | |
| 530 CGRAPH_STATE_EXPANSION, | |
| 531 /* All cgraph expansion is done. */ | |
| 532 CGRAPH_STATE_FINISHED | |
| 533 }; | |
| 534 extern enum cgraph_state cgraph_state; | |
| 535 extern bool cgraph_function_flags_ready; | |
| 536 extern GTY(()) struct cgraph_node *cgraph_nodes_queue; | |
| 537 extern GTY(()) struct cgraph_node *cgraph_new_nodes; | |
| 538 | |
| 539 extern GTY(()) struct cgraph_asm_node *cgraph_asm_nodes; | |
| 540 extern GTY(()) int cgraph_order; | |
| 541 | |
| 542 /* In cgraph.c */ | |
| 543 void dump_cgraph (FILE *); | |
| 544 void debug_cgraph (void); | |
| 545 void dump_cgraph_node (FILE *, struct cgraph_node *); | |
| 546 void debug_cgraph_node (struct cgraph_node *); | |
| 547 void cgraph_insert_node_to_hashtable (struct cgraph_node *node); | |
| 548 void cgraph_remove_edge (struct cgraph_edge *); | |
| 549 void cgraph_remove_node (struct cgraph_node *); | |
|
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550 void cgraph_remove_node_and_inline_clones (struct cgraph_node *); |
| 0 | 551 void cgraph_release_function_body (struct cgraph_node *); |
| 552 void cgraph_node_remove_callees (struct cgraph_node *node); | |
| 553 struct cgraph_edge *cgraph_create_edge (struct cgraph_node *, | |
| 554 struct cgraph_node *, | |
| 555 gimple, gcov_type, int, int); | |
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556 struct cgraph_edge *cgraph_create_indirect_edge (struct cgraph_node *, gimple, |
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557 int, gcov_type, int, int); |
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558 struct cgraph_indirect_call_info *cgraph_allocate_init_indirect_info (void); |
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559 struct cgraph_node * cgraph_get_node (const_tree); |
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560 struct cgraph_node * cgraph_get_node_or_alias (const_tree); |
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561 struct cgraph_node * cgraph_node (tree); |
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562 struct cgraph_node * cgraph_same_body_alias (struct cgraph_node *, tree, tree); |
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563 struct cgraph_node * cgraph_add_thunk (struct cgraph_node *, tree, tree, bool, HOST_WIDE_INT, |
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564 HOST_WIDE_INT, tree, tree); |
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565 void cgraph_remove_same_body_alias (struct cgraph_node *); |
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566 struct cgraph_node *cgraph_node_for_asm (tree); |
| 0 | 567 struct cgraph_edge *cgraph_edge (struct cgraph_node *, gimple); |
| 568 void cgraph_set_call_stmt (struct cgraph_edge *, gimple); | |
|
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569 void cgraph_set_call_stmt_including_clones (struct cgraph_node *, gimple, gimple); |
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570 void cgraph_create_edge_including_clones (struct cgraph_node *, |
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571 struct cgraph_node *, |
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572 gimple, gimple, gcov_type, int, int, |
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573 cgraph_inline_failed_t); |
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574 void cgraph_update_edges_for_call_stmt (gimple, tree, gimple); |
| 0 | 575 struct cgraph_local_info *cgraph_local_info (tree); |
| 576 struct cgraph_global_info *cgraph_global_info (tree); | |
| 577 struct cgraph_rtl_info *cgraph_rtl_info (tree); | |
| 578 const char * cgraph_node_name (struct cgraph_node *); | |
| 579 struct cgraph_edge * cgraph_clone_edge (struct cgraph_edge *, | |
|
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580 struct cgraph_node *, gimple, |
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581 unsigned, gcov_type, int, int, bool); |
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582 struct cgraph_node * cgraph_clone_node (struct cgraph_node *, tree, gcov_type, int, |
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583 int, bool, VEC(cgraph_edge_p,heap) *); |
| 0 | 584 |
| 585 void cgraph_redirect_edge_callee (struct cgraph_edge *, struct cgraph_node *); | |
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586 void cgraph_make_edge_direct (struct cgraph_edge *, struct cgraph_node *, |
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587 HOST_WIDE_INT); |
| 0 | 588 |
| 589 struct cgraph_asm_node *cgraph_add_asm_node (tree); | |
| 590 | |
| 591 bool cgraph_function_possibly_inlined_p (tree); | |
| 592 void cgraph_unnest_node (struct cgraph_node *); | |
| 593 | |
| 594 enum availability cgraph_function_body_availability (struct cgraph_node *); | |
| 595 void cgraph_add_new_function (tree, bool); | |
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596 const char* cgraph_inline_failed_string (cgraph_inline_failed_t); |
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597 struct cgraph_node * cgraph_create_virtual_clone (struct cgraph_node *old_node, |
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598 VEC(cgraph_edge_p,heap)*, |
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599 VEC(ipa_replace_map_p,gc)* tree_map, |
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600 bitmap args_to_skip, |
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601 const char *clone_name); |
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602 |
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603 void cgraph_set_nothrow_flag (struct cgraph_node *, bool); |
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604 void cgraph_set_const_flag (struct cgraph_node *, bool, bool); |
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605 void cgraph_set_pure_flag (struct cgraph_node *, bool, bool); |
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606 tree clone_function_name (tree decl, const char *); |
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607 bool cgraph_node_cannot_return (struct cgraph_node *); |
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608 bool cgraph_edge_cannot_lead_to_return (struct cgraph_edge *); |
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609 bool cgraph_will_be_removed_from_program_if_no_direct_calls |
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610 (struct cgraph_node *node); |
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611 bool cgraph_can_remove_if_no_direct_calls_and_refs_p |
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612 (struct cgraph_node *node); |
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613 bool resolution_used_from_other_file_p (enum ld_plugin_symbol_resolution resolution); |
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614 bool cgraph_used_from_object_file_p (struct cgraph_node *node); |
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615 bool varpool_used_from_object_file_p (struct varpool_node *node); |
| 0 | 616 |
| 617 /* In cgraphunit.c */ | |
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618 extern FILE *cgraph_dump_file; |
| 0 | 619 void cgraph_finalize_function (tree, bool); |
| 620 void cgraph_mark_if_needed (tree); | |
| 621 void cgraph_finalize_compilation_unit (void); | |
| 622 void cgraph_optimize (void); | |
| 623 void cgraph_mark_needed_node (struct cgraph_node *); | |
|
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624 void cgraph_mark_address_taken_node (struct cgraph_node *); |
| 0 | 625 void cgraph_mark_reachable_node (struct cgraph_node *); |
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626 bool cgraph_inline_p (struct cgraph_edge *, cgraph_inline_failed_t *reason); |
| 0 | 627 bool cgraph_preserve_function_body_p (tree); |
| 628 void verify_cgraph (void); | |
| 629 void verify_cgraph_node (struct cgraph_node *); | |
| 630 void cgraph_build_static_cdtor (char which, tree body, int priority); | |
| 631 void cgraph_reset_static_var_maps (void); | |
| 632 void init_cgraph (void); | |
| 633 struct cgraph_node *cgraph_function_versioning (struct cgraph_node *, | |
| 634 VEC(cgraph_edge_p,heap)*, | |
|
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635 VEC(ipa_replace_map_p,gc)*, |
|
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636 bitmap, bitmap, basic_block, |
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637 const char *); |
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638 void tree_function_versioning (tree, tree, VEC (ipa_replace_map_p,gc)*, bool, bitmap, |
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639 bitmap, basic_block); |
| 0 | 640 struct cgraph_node *save_inline_function_body (struct cgraph_node *); |
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641 void record_references_in_initializer (tree, bool); |
| 0 | 642 bool cgraph_process_new_functions (void); |
| 643 | |
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644 bool cgraph_decide_is_function_needed (struct cgraph_node *, tree); |
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645 |
| 0 | 646 typedef void (*cgraph_edge_hook)(struct cgraph_edge *, void *); |
| 647 typedef void (*cgraph_node_hook)(struct cgraph_node *, void *); | |
| 648 typedef void (*cgraph_2edge_hook)(struct cgraph_edge *, struct cgraph_edge *, | |
| 649 void *); | |
| 650 typedef void (*cgraph_2node_hook)(struct cgraph_node *, struct cgraph_node *, | |
| 651 void *); | |
| 652 struct cgraph_edge_hook_list; | |
| 653 struct cgraph_node_hook_list; | |
| 654 struct cgraph_2edge_hook_list; | |
| 655 struct cgraph_2node_hook_list; | |
| 656 struct cgraph_edge_hook_list *cgraph_add_edge_removal_hook (cgraph_edge_hook, void *); | |
| 657 void cgraph_remove_edge_removal_hook (struct cgraph_edge_hook_list *); | |
| 658 struct cgraph_node_hook_list *cgraph_add_node_removal_hook (cgraph_node_hook, | |
| 659 void *); | |
| 660 void cgraph_remove_node_removal_hook (struct cgraph_node_hook_list *); | |
| 661 struct cgraph_node_hook_list *cgraph_add_function_insertion_hook (cgraph_node_hook, | |
| 662 void *); | |
| 663 void cgraph_remove_function_insertion_hook (struct cgraph_node_hook_list *); | |
| 664 void cgraph_call_function_insertion_hooks (struct cgraph_node *node); | |
| 665 struct cgraph_2edge_hook_list *cgraph_add_edge_duplication_hook (cgraph_2edge_hook, void *); | |
| 666 void cgraph_remove_edge_duplication_hook (struct cgraph_2edge_hook_list *); | |
| 667 struct cgraph_2node_hook_list *cgraph_add_node_duplication_hook (cgraph_2node_hook, void *); | |
| 668 void cgraph_remove_node_duplication_hook (struct cgraph_2node_hook_list *); | |
|
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669 void cgraph_materialize_all_clones (void); |
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670 gimple cgraph_redirect_edge_call_stmt_to_callee (struct cgraph_edge *); |
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671 bool cgraph_propagate_frequency (struct cgraph_node *node); |
| 0 | 672 /* In cgraphbuild.c */ |
| 673 unsigned int rebuild_cgraph_edges (void); | |
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674 void cgraph_rebuild_references (void); |
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675 void reset_inline_failed (struct cgraph_node *); |
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676 int compute_call_stmt_bb_frequency (tree, basic_block bb); |
| 0 | 677 |
| 678 /* In ipa.c */ | |
| 679 bool cgraph_remove_unreachable_nodes (bool, FILE *); | |
| 680 int cgraph_postorder (struct cgraph_node **); | |
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681 cgraph_node_set cgraph_node_set_new (void); |
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682 cgraph_node_set_iterator cgraph_node_set_find (cgraph_node_set, |
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683 struct cgraph_node *); |
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684 void cgraph_node_set_add (cgraph_node_set, struct cgraph_node *); |
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685 void cgraph_node_set_remove (cgraph_node_set, struct cgraph_node *); |
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686 void dump_cgraph_node_set (FILE *, cgraph_node_set); |
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687 void debug_cgraph_node_set (cgraph_node_set); |
| 0 | 688 |
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689 varpool_node_set varpool_node_set_new (void); |
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690 varpool_node_set_iterator varpool_node_set_find (varpool_node_set, |
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691 struct varpool_node *); |
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692 void varpool_node_set_add (varpool_node_set, struct varpool_node *); |
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693 void varpool_node_set_remove (varpool_node_set, struct varpool_node *); |
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694 void dump_varpool_node_set (FILE *, varpool_node_set); |
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695 void debug_varpool_node_set (varpool_node_set); |
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696 void ipa_discover_readonly_nonaddressable_vars (void); |
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697 bool cgraph_comdat_can_be_unshared_p (struct cgraph_node *); |
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698 |
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699 /* In predict.c */ |
| 0 | 700 bool cgraph_maybe_hot_edge_p (struct cgraph_edge *e); |
| 701 | |
| 702 /* In varpool.c */ | |
| 703 extern GTY(()) struct varpool_node *varpool_nodes_queue; | |
| 704 extern GTY(()) struct varpool_node *varpool_nodes; | |
| 705 | |
| 706 struct varpool_node *varpool_node (tree); | |
| 707 struct varpool_node *varpool_node_for_asm (tree asmname); | |
| 708 void varpool_mark_needed_node (struct varpool_node *); | |
|
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709 void debug_varpool (void); |
| 0 | 710 void dump_varpool (FILE *); |
| 711 void dump_varpool_node (FILE *, struct varpool_node *); | |
| 712 | |
| 713 void varpool_finalize_decl (tree); | |
| 714 bool decide_is_variable_needed (struct varpool_node *, tree); | |
| 715 enum availability cgraph_variable_initializer_availability (struct varpool_node *); | |
|
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716 void cgraph_make_decl_local (tree); |
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717 void cgraph_make_node_local (struct cgraph_node *); |
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718 bool cgraph_node_can_be_local_p (struct cgraph_node *); |
| 0 | 719 |
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720 |
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721 struct varpool_node * varpool_get_node (const_tree decl); |
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722 void varpool_remove_node (struct varpool_node *node); |
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723 void varpool_finalize_named_section_flags (struct varpool_node *node); |
| 0 | 724 bool varpool_assemble_pending_decls (void); |
| 725 bool varpool_assemble_decl (struct varpool_node *node); | |
| 726 bool varpool_analyze_pending_decls (void); | |
| 727 void varpool_remove_unreferenced_decls (void); | |
| 728 void varpool_empty_needed_queue (void); | |
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729 struct varpool_node * varpool_extra_name_alias (tree, tree); |
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730 const char * varpool_node_name (struct varpool_node *node); |
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731 void varpool_reset_queue (void); |
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732 bool const_value_known_p (tree); |
| 0 | 733 |
| 734 /* Walk all reachable static variables. */ | |
| 735 #define FOR_EACH_STATIC_VARIABLE(node) \ | |
| 736 for ((node) = varpool_nodes_queue; (node); (node) = (node)->next_needed) | |
| 737 | |
| 738 /* Return first reachable static variable with initializer. */ | |
| 739 static inline struct varpool_node * | |
| 740 varpool_first_static_initializer (void) | |
| 741 { | |
| 742 struct varpool_node *node; | |
| 743 for (node = varpool_nodes_queue; node; node = node->next_needed) | |
| 744 { | |
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745 gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL); |
| 0 | 746 if (DECL_INITIAL (node->decl)) |
| 747 return node; | |
| 748 } | |
| 749 return NULL; | |
| 750 } | |
| 751 | |
| 752 /* Return next reachable static variable with initializer after NODE. */ | |
| 753 static inline struct varpool_node * | |
| 754 varpool_next_static_initializer (struct varpool_node *node) | |
| 755 { | |
| 756 for (node = node->next_needed; node; node = node->next_needed) | |
| 757 { | |
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758 gcc_checking_assert (TREE_CODE (node->decl) == VAR_DECL); |
| 0 | 759 if (DECL_INITIAL (node->decl)) |
| 760 return node; | |
| 761 } | |
| 762 return NULL; | |
| 763 } | |
| 764 | |
| 765 /* Walk all static variables with initializer set. */ | |
| 766 #define FOR_EACH_STATIC_INITIALIZER(node) \ | |
| 767 for ((node) = varpool_first_static_initializer (); (node); \ | |
| 768 (node) = varpool_next_static_initializer (node)) | |
| 769 | |
| 770 /* In ipa-inline.c */ | |
| 771 void cgraph_clone_inlined_nodes (struct cgraph_edge *, bool, bool); | |
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772 void compute_inline_parameters (struct cgraph_node *); |
| 0 | 773 |
| 774 | |
| 775 /* Create a new static variable of type TYPE. */ | |
| 776 tree add_new_static_var (tree type); | |
| 777 | |
|
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778 /* Return true if iterator CSI points to nothing. */ |
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779 static inline bool |
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780 csi_end_p (cgraph_node_set_iterator csi) |
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781 { |
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782 return csi.index >= VEC_length (cgraph_node_ptr, csi.set->nodes); |
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783 } |
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784 |
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785 /* Advance iterator CSI. */ |
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786 static inline void |
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787 csi_next (cgraph_node_set_iterator *csi) |
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788 { |
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789 csi->index++; |
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790 } |
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791 |
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792 /* Return the node pointed to by CSI. */ |
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793 static inline struct cgraph_node * |
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794 csi_node (cgraph_node_set_iterator csi) |
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795 { |
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796 return VEC_index (cgraph_node_ptr, csi.set->nodes, csi.index); |
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797 } |
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798 |
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799 /* Return an iterator to the first node in SET. */ |
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800 static inline cgraph_node_set_iterator |
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801 csi_start (cgraph_node_set set) |
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802 { |
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803 cgraph_node_set_iterator csi; |
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804 |
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805 csi.set = set; |
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806 csi.index = 0; |
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807 return csi; |
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808 } |
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809 |
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810 /* Return true if SET contains NODE. */ |
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811 static inline bool |
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812 cgraph_node_in_set_p (struct cgraph_node *node, cgraph_node_set set) |
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813 { |
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814 cgraph_node_set_iterator csi; |
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815 csi = cgraph_node_set_find (set, node); |
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816 return !csi_end_p (csi); |
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817 } |
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818 |
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819 /* Return number of nodes in SET. */ |
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820 static inline size_t |
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821 cgraph_node_set_size (cgraph_node_set set) |
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822 { |
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823 return htab_elements (set->hashtab); |
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824 } |
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825 |
|
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826 /* Return true if iterator VSI points to nothing. */ |
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827 static inline bool |
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828 vsi_end_p (varpool_node_set_iterator vsi) |
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829 { |
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830 return vsi.index >= VEC_length (varpool_node_ptr, vsi.set->nodes); |
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831 } |
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832 |
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833 /* Advance iterator VSI. */ |
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834 static inline void |
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835 vsi_next (varpool_node_set_iterator *vsi) |
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836 { |
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837 vsi->index++; |
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838 } |
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839 |
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840 /* Return the node pointed to by VSI. */ |
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841 static inline struct varpool_node * |
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842 vsi_node (varpool_node_set_iterator vsi) |
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843 { |
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844 return VEC_index (varpool_node_ptr, vsi.set->nodes, vsi.index); |
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845 } |
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846 |
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847 /* Return an iterator to the first node in SET. */ |
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848 static inline varpool_node_set_iterator |
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849 vsi_start (varpool_node_set set) |
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850 { |
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851 varpool_node_set_iterator vsi; |
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852 |
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853 vsi.set = set; |
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854 vsi.index = 0; |
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855 return vsi; |
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856 } |
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857 |
|
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858 /* Return true if SET contains NODE. */ |
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859 static inline bool |
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860 varpool_node_in_set_p (struct varpool_node *node, varpool_node_set set) |
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861 { |
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862 varpool_node_set_iterator vsi; |
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863 vsi = varpool_node_set_find (set, node); |
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864 return !vsi_end_p (vsi); |
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865 } |
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866 |
|
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867 /* Return number of nodes in SET. */ |
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868 static inline size_t |
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869 varpool_node_set_size (varpool_node_set set) |
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870 { |
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871 return htab_elements (set->hashtab); |
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872 } |
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873 |
|
55
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874 /* Uniquize all constants that appear in memory. |
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875 Each constant in memory thus far output is recorded |
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876 in `const_desc_table'. */ |
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877 |
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878 struct GTY(()) constant_descriptor_tree { |
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879 /* A MEM for the constant. */ |
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880 rtx rtl; |
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881 |
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882 /* The value of the constant. */ |
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883 tree value; |
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884 |
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885 /* Hash of value. Computing the hash from value each time |
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886 hashfn is called can't work properly, as that means recursive |
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887 use of the hash table during hash table expansion. */ |
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888 hashval_t hash; |
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889 }; |
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890 |
|
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891 /* Return true if set is nonempty. */ |
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892 static inline bool |
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893 cgraph_node_set_nonempty_p (cgraph_node_set set) |
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894 { |
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895 return !VEC_empty (cgraph_node_ptr, set->nodes); |
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896 } |
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897 |
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898 /* Return true if set is nonempty. */ |
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899 static inline bool |
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900 varpool_node_set_nonempty_p (varpool_node_set set) |
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901 { |
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902 return !VEC_empty (varpool_node_ptr, set->nodes); |
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903 } |
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904 |
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905 /* Return true when function NODE is only called directly. |
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906 i.e. it is not externally visible, address was not taken and |
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907 it is not used in any other non-standard way. */ |
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908 |
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909 static inline bool |
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910 cgraph_only_called_directly_p (struct cgraph_node *node) |
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911 { |
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912 gcc_assert (!node->global.inlined_to); |
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913 return (!node->needed && !node->address_taken |
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914 && !node->reachable_from_other_partition |
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915 && !DECL_STATIC_CONSTRUCTOR (node->decl) |
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916 && !DECL_STATIC_DESTRUCTOR (node->decl) |
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917 && !node->local.externally_visible); |
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918 } |
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919 |
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920 /* Return true when function NODE can be removed from callgraph |
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921 if all direct calls are eliminated. */ |
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922 |
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923 static inline bool |
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924 cgraph_can_remove_if_no_direct_calls_p (struct cgraph_node *node) |
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925 { |
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926 /* Extern inlines can always go, we will use the external definition. */ |
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927 if (DECL_EXTERNAL (node->decl)) |
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928 return true; |
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929 return !node->address_taken && cgraph_can_remove_if_no_direct_calls_and_refs_p (node); |
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930 } |
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931 |
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932 /* Return true when function NODE can be removed from callgraph |
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933 if all direct calls are eliminated. */ |
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934 |
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935 static inline bool |
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936 varpool_can_remove_if_no_refs (struct varpool_node *node) |
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937 { |
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938 return (!node->force_output && !node->used_from_other_partition |
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939 && (flag_toplevel_reorder || DECL_COMDAT (node->decl) |
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940 || DECL_ARTIFICIAL (node->decl)) |
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941 && (DECL_COMDAT (node->decl) || !node->externally_visible)); |
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942 } |
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943 |
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944 /* Return true when all references to VNODE must be visible in ipa_ref_list. |
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945 i.e. if the variable is not externally visible or not used in some magic |
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946 way (asm statement or such). |
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947 The magic uses are all summarized in force_output flag. */ |
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948 |
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949 static inline bool |
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950 varpool_all_refs_explicit_p (struct varpool_node *vnode) |
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951 { |
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952 return (!vnode->externally_visible |
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953 && !vnode->used_from_other_partition |
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954 && !vnode->force_output); |
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955 } |
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956 |
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957 /* Constant pool accessor function. */ |
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958 htab_t constant_pool_htab (void); |
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959 |
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960 /* FIXME: inappropriate dependency of cgraph on IPA. */ |
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961 #include "ipa-ref-inline.h" |
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962 |
| 0 | 963 #endif /* GCC_CGRAPH_H */ |