| Index: multiversion.h |
| =================================================================== |
| --- multiversion.h (revision 0) |
| +++ multiversion.h (revision 0) |
| @@ -0,0 +1,51 @@ |
| +/* Function Multiversioning. |
| + Copyright (C) 2012 Free Software Foundation, Inc. |
| + Contributed by Sriraman Tallam (tmsriram@google.com) |
| + |
| +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/>. */ |
| + |
| +/* This is the header file which provides the functions to keep track |
| + of functions that are multi-versioned and to generate the dispatch |
| + code to call the right version at run-time. */ |
| + |
| +#ifndef GCC_MULTIVERSION_H |
| +#define GCC_MULTIVERION_H |
| + |
| +#include "tree.h" |
| + |
| +/* Mark DECL1 and DECL2 as function versions. */ |
| +int group_function_versions (const tree decl1, const tree decl2); |
| +/* Mark DECL as deleted and no longer a version. */ |
| +void mark_delete_decl_version (const tree decl); |
| +/* Returns true if DECL is the default version to be executed if all |
| + other versions are inappropriate at run-time. */ |
| +bool is_default_function (const tree decl); |
| +/* Gets the IFUNC dispatcher for this multi-versioned function DECL. DECL |
| + must be the default function in the multi-versioned group. */ |
| +tree get_ifunc_for_version (const tree decl); |
| +/* Returns true when only one of DECL1 and DECL2 is marked with "targetv" |
| + or if the "targetv" attribute strings of DECL1 and DECL2 dont match. */ |
| +bool has_different_version_attributes (const tree decl1, const tree decl2); |
| +/* If DECL is a function version and not the default version, the assembler |
| + name of DECL is changed to include the attribute string to keep the |
| + name unambiguous. */ |
| +void version_assembler_name (const tree decl); |
| +/* This makes the IFUNC definition for the multi-versioned function DECL. |
| + The new IFUNC function when called will dispatch the appropriate function |
| + version. */ |
| +tree make_ifunc_selector_for_version (const tree decl); |
| +#endif |
