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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ipa-ref.h] - Rev 696
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/* IPA reference lists. Copyright (C) 2010 Free Software Foundation, Inc. Contributed by Jan Hubicka This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ struct cgraph_node; struct varpool_node; /* How the reference is done. */ enum GTY(()) ipa_ref_use { IPA_REF_LOAD, IPA_REF_STORE, IPA_REF_ADDR, IPA_REF_ALIAS }; /* Type of refering or refered type. */ enum GTY(()) ipa_ref_type { IPA_REF_CGRAPH, IPA_REF_VARPOOL }; /* We can have references spanning both callgraph and varpool, so all pointers needs to be of both types. */ union GTY(()) ipa_ref_ptr_u { struct cgraph_node * GTY((tag ("IPA_REF_CGRAPH"))) cgraph_node; struct varpool_node * GTY((tag ("IPA_REF_VARPOOL"))) varpool_node; }; /* Record of reference in callgraph or varpool. */ struct GTY(()) ipa_ref { union ipa_ref_ptr_u GTY ((desc ("%1.refering_type"))) refering; union ipa_ref_ptr_u GTY ((desc ("%1.refered_type"))) refered; gimple stmt; unsigned int refered_index; ENUM_BITFIELD (ipa_ref_type) refering_type:1; ENUM_BITFIELD (ipa_ref_type) refered_type:1; ENUM_BITFIELD (ipa_ref_use) use:2; }; typedef struct ipa_ref ipa_ref_t; typedef struct ipa_ref *ipa_ref_ptr; DEF_VEC_O(ipa_ref_t); DEF_VEC_ALLOC_O(ipa_ref_t,gc); DEF_VEC_P(ipa_ref_ptr); DEF_VEC_ALLOC_P(ipa_ref_ptr,heap); /* List of references. This is stored in both callgraph and varpool nodes. */ struct GTY(()) ipa_ref_list { /* Store actual references in references vector. */ VEC(ipa_ref_t,gc) *references; /* Refering is vector of pointers to references. It must not live in GGC space or GGC will try to mark middle of references vectors. */ VEC(ipa_ref_ptr,heap) * GTY((skip)) refering; }; struct ipa_ref * ipa_record_reference (struct cgraph_node *, struct varpool_node *, struct cgraph_node *, struct varpool_node *, enum ipa_ref_use, gimple); void ipa_remove_reference (struct ipa_ref *); void ipa_remove_all_references (struct ipa_ref_list *); void ipa_remove_all_refering (struct ipa_ref_list *); void ipa_dump_references (FILE *, struct ipa_ref_list *); void ipa_dump_refering (FILE *, struct ipa_ref_list *); void ipa_clone_references (struct cgraph_node *, struct varpool_node *, struct ipa_ref_list *); void ipa_clone_refering (struct cgraph_node *, struct varpool_node *, struct ipa_ref_list *); bool ipa_ref_cannot_lead_to_return (struct ipa_ref *); bool ipa_ref_has_aliases_p (struct ipa_ref_list *);
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