X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbesched.h;h=eb7907d1f80e3c93df88fa2d5956efd8d02e1484;hb=8c2710b8f28f31447e12055651725a7cf53714bc;hp=564a1c04ba902d7f81375f7fabbf3f7d5f4b05c8;hpb=d26125ca5720072a4975d37c0a17f7ad6c18de2d;p=libfirm diff --git a/ir/be/besched.h b/ir/be/besched.h index 564a1c04b..eb7907d1f 100644 --- a/ir/be/besched.h +++ b/ir/be/besched.h @@ -1,12 +1,216 @@ +/* + * This file is part of libFirm. + * Copyright (C) 2012 University of Karlsruhe. + */ -#ifndef _BESCHED_H -#define _BESCHED_H +/** + * @file + * @brief data structures for scheduling nodes in basic blocks. + * @author Sebastian Hack, Matthias Braun + */ +#ifndef FIRM_BE_BESCHED_H +#define FIRM_BE_BESCHED_H -#include +#include -#include "besched_t.h" +#include "beinfo.h" -void be_sched_init(void); -void be_sched_dump(FILE *f, const ir_graph *irg); +static sched_info_t *get_irn_sched_info(const ir_node *node) +{ + return &be_get_info(skip_Proj_const(node))->sched_info; +} + +/** + * Check, if the node is scheduled. + * Block nodes are reported as scheduled as they mark the begin and end + * of the scheduling list. + * @param irn The node. + * @return 1, if the node is scheduled, 0 if not. + */ +static inline bool sched_is_scheduled(const ir_node *irn) +{ + return get_irn_sched_info(irn)->next != NULL; +} + +/** + * Returns the time step of a node. Each node in a block has a timestep + * unique to that block. A node schedule before another node has a lower + * timestep than this node. + * @param irn The node. + * @return The time step in the schedule. + */ +static inline sched_timestep_t sched_get_time_step(const ir_node *irn) +{ + assert(sched_is_scheduled(irn)); + return get_irn_sched_info(irn)->time_step; +} + +static inline bool sched_is_end(const ir_node *node) +{ + return is_Block(node); +} + +static inline bool sched_is_begin(const ir_node *node) +{ + return is_Block(node); +} + +/** + * Get the scheduling successor of a node. + * @param irn The node. + * @return The next ir node in the schedule or the block, if the node has no next node. + */ +static inline ir_node *sched_next(const ir_node *irn) +{ + const sched_info_t *info = get_irn_sched_info(irn); + return info->next; +} + +/** + * Get the scheduling predecessor of a node. + * @param irn The node. + * @return The next ir node in the schedule or the block, if the node has no predecessor. + * predecessor. + */ +static inline ir_node *sched_prev(const ir_node *irn) +{ + const sched_info_t *info = get_irn_sched_info(irn); + return info->prev; +} + +/** + * Get the first node in a block schedule. + * @param block The block of which to get the schedule. + * @return The first node in the schedule or the block itself + * if there is no node in the schedule. + */ +static inline ir_node *sched_first(const ir_node *block) +{ + assert(is_Block(block) && "Need a block here"); + return sched_next(block); +} + +/** + * Get the last node in a schedule. + * @param block The block to get the schedule for. + * @return The last ir node in a schedule, or the block itself + * if there is no node in the schedule. + */ +static inline ir_node *sched_last(const ir_node *block) +{ + assert(is_Block(block) && "Need a block here"); + return sched_prev(block); +} + +/** + * Add a node to a block schedule. + * @param irn The node to add. + * @return The given node. + */ +void sched_add_before(ir_node *before, ir_node *irn); + + +/** + * Add a node to a block schedule. + * @param irn The node to add. + * @return The given node. + */ +void sched_add_after(ir_node *after, ir_node *irn); + +static inline void sched_init_block(ir_node *block) +{ + sched_info_t *info = get_irn_sched_info(block); + assert(info->next == NULL && info->time_step == 0); + info->next = block; + info->prev = block; +} + +static inline void sched_reset(ir_node *node) +{ + sched_info_t *info = get_irn_sched_info(node); + info->next = NULL; + info->prev = NULL; +} + +/** + * Remove a node from the scheduled. + * @param irn The node. + */ +void sched_remove(ir_node *irn); + +/** + * Remove @p old from the schedule and put @p irn in its place. + */ +void sched_replace(ir_node *old, ir_node *irn); + +/** + * Checks, if one node is scheduled before another. + * @param n1 A node. + * @param n2 Another node. + * @return true, if n1 is in front of n2 in the schedule, false else. + * @note Both nodes must be in the same block. + */ +static inline bool sched_comes_after(const ir_node *n1, const ir_node *n2) +{ + assert((is_Block(n1) ? n1 : get_nodes_block(n1)) == (is_Block(n2) ? n2 : get_nodes_block(n2))); + return sched_get_time_step(n1) < sched_get_time_step(n2); +} + +#define sched_foreach_after(after, irn) \ + for (ir_node *irn = (after); !sched_is_end(irn = sched_next(irn));) + +#define sched_foreach_reverse_before(before, irn) \ + for (ir_node *irn = (before); !sched_is_begin(irn = sched_prev(irn));) + +/** + * A shorthand macro for iterating over a schedule. + * @param block The block. + * @param irn A ir node pointer used as an iterator. + */ +#define sched_foreach(block,irn) \ + sched_foreach_after((assert(is_Block(block)), block), irn) + +/** + * A shorthand macro for reversely iterating over a schedule. + * @param block The block. + * @param irn A ir node pointer used as an iterator. + */ +#define sched_foreach_reverse(block,irn) \ + sched_foreach_reverse_before((assert(is_Block(block)), block), irn) + +/** + * A shorthand macro for iterating over a schedule while the current node may be + * removed or replaced. + * + * @param block The block. + * @param irn A ir node pointer used as an iterator. + */ +#define sched_foreach_safe(block, irn) \ + for (ir_node *irn, *irn##__next = sched_first(block); !sched_is_end(irn = irn##__next) ? irn##__next = sched_next(irn), 1 : 0;) + +/** + * A shorthand macro for reversely iterating over a schedule while the current + * node may be removed or replaced. + * + * @param block The block. + * @param irn A ir node pointer used as an iterator. + */ +#define sched_foreach_reverse_safe(block, irn) \ + for (ir_node *irn, *irn##__prev = sched_last(block); !sched_is_begin(irn = irn##__prev) ? irn##__prev = sched_prev(irn), 1 : 0;) + +/** + * Type for a function scheduling a graph + */ +typedef void (*schedule_func) (ir_graph *irg); + +/** + * Register new scheduling algorithm + */ +void be_register_scheduler(const char *name, schedule_func func); + +/** + * schedule a graph with the currenty selected scheduler. + */ +void be_schedule_graph(ir_graph *irg); #endif