| /* Communication between the Integrated Register Allocator (IRA) and |
| the rest of the compiler. |
| Copyright (C) 2006, 2007, 2008, 2009, 2010 |
| Free Software Foundation, Inc. |
| Contributed by Vladimir Makarov <vmakarov@redhat.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/>. */ |
| |
| /* Function specific hard registers can not be used for the register |
| allocation. */ |
| extern HARD_REG_SET ira_no_alloc_regs; |
| |
| /* True if we have allocno conflicts. It is false for non-optimized |
| mode or when the conflict table is too big. */ |
| extern bool ira_conflicts_p; |
| |
| struct target_ira { |
| /* Number of given class hard registers available for the register |
| allocation for given classes. */ |
| int x_ira_available_class_regs[N_REG_CLASSES]; |
| |
| /* Map: hard register number -> cover class it belongs to. If the |
| corresponding class is NO_REGS, the hard register is not available |
| for allocation. */ |
| enum reg_class x_ira_hard_regno_cover_class[FIRST_PSEUDO_REGISTER]; |
| |
| /* Number of cover classes. Cover classes is non-intersected register |
| classes containing all hard-registers available for the |
| allocation. */ |
| int x_ira_reg_class_cover_size; |
| |
| /* The array containing cover classes (see also comments for macro |
| IRA_COVER_CLASSES;. Only first IRA_REG_CLASS_COVER_SIZE elements are |
| used for this. */ |
| enum reg_class x_ira_reg_class_cover[N_REG_CLASSES]; |
| |
| /* Map of all register classes to corresponding cover class containing |
| the given class. If given class is not a subset of a cover class, |
| we translate it into the cheapest cover class. */ |
| enum reg_class x_ira_class_translate[N_REG_CLASSES]; |
| |
| /* Map: register class x machine mode -> number of hard registers of |
| given class needed to store value of given mode. If the number for |
| some hard-registers of the register class is different, the size |
| will be negative. */ |
| int x_ira_reg_class_nregs[N_REG_CLASSES][MAX_MACHINE_MODE]; |
| |
| /* Array analogous to target hook TARGET_MEMORY_MOVE_COST. */ |
| short x_ira_memory_move_cost[MAX_MACHINE_MODE][N_REG_CLASSES][2]; |
| |
| /* Array of number of hard registers of given class which are |
| available for the allocation. The order is defined by the |
| allocation order. */ |
| short x_ira_class_hard_regs[N_REG_CLASSES][FIRST_PSEUDO_REGISTER]; |
| |
| /* The number of elements of the above array for given register |
| class. */ |
| int x_ira_class_hard_regs_num[N_REG_CLASSES]; |
| }; |
| |
| extern struct target_ira default_target_ira; |
| #if SWITCHABLE_TARGET |
| extern struct target_ira *this_target_ira; |
| #else |
| #define this_target_ira (&default_target_ira) |
| #endif |
| |
| #define ira_available_class_regs \ |
| (this_target_ira->x_ira_available_class_regs) |
| #define ira_hard_regno_cover_class \ |
| (this_target_ira->x_ira_hard_regno_cover_class) |
| #define ira_reg_class_cover_size \ |
| (this_target_ira->x_ira_reg_class_cover_size) |
| #define ira_reg_class_cover \ |
| (this_target_ira->x_ira_reg_class_cover) |
| #define ira_class_translate \ |
| (this_target_ira->x_ira_class_translate) |
| #define ira_reg_class_nregs \ |
| (this_target_ira->x_ira_reg_class_nregs) |
| #define ira_memory_move_cost \ |
| (this_target_ira->x_ira_memory_move_cost) |
| #define ira_class_hard_regs \ |
| (this_target_ira->x_ira_class_hard_regs) |
| #define ira_class_hard_regs_num \ |
| (this_target_ira->x_ira_class_hard_regs_num) |
| |
| extern void ira_init_once (void); |
| extern void ira_init (void); |
| extern void ira_finish_once (void); |
| extern void ira_setup_eliminable_regset (void); |
| extern rtx ira_eliminate_regs (rtx, enum machine_mode); |
| extern void ira_set_pseudo_classes (FILE *); |
| extern void ira_implicitly_set_insn_hard_regs (HARD_REG_SET *); |
| |
| extern void ira_sort_regnos_for_alter_reg (int *, int, unsigned int *); |
| extern void ira_mark_allocation_change (int); |
| extern void ira_mark_memory_move_deletion (int, int); |
| extern bool ira_reassign_pseudos (int *, int, HARD_REG_SET, HARD_REG_SET *, |
| HARD_REG_SET *, bitmap); |
| extern rtx ira_reuse_stack_slot (int, unsigned int, unsigned int); |
| extern void ira_mark_new_stack_slot (rtx, int, unsigned int); |
| extern bool ira_better_spill_reload_regno_p (int *, int *, rtx, rtx, rtx); |
| extern bool ira_bad_reload_regno (int, rtx, rtx); |
| |
| extern void ira_adjust_equiv_reg_cost (unsigned, int); |