X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeloopana.c;h=aae7fae74493d53e763c6fa5e57c0d0490db7382;hb=493edb72be97161f5c8762e4589631a6e7083a29;hp=b89394c622e0dd1b76bd1868e83b4b50f3d25d2d;hpb=205396c4f4f5abe7abd6dc2350c8c398a7623afc;p=libfirm diff --git a/ir/be/beloopana.c b/ir/be/beloopana.c index b89394c62..aae7fae74 100644 --- a/ir/be/beloopana.c +++ b/ir/be/beloopana.c @@ -1,103 +1,109 @@ +/* + * This file is part of libFirm. + * Copyright (C) 2012 University of Karlsruhe. + */ + /** - * Author: Christian Wuerdig - * Date: 2007/02/19 - * Copyright: (c) Universitaet Karlsruhe - * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. - * CVS-Id: $Id$ - * - * Compute register pressure in loops + * @file + * @brief Compute register pressure in loops. + * @author Christian Wuerdig + * @date 19.02.2007 */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif #include "set.h" #include "pset.h" #include "irnode.h" -#include "irtools.h" +#include "util.h" #include "irloop_t.h" #include "error.h" #include "debug.h" -#include "bearch_t.h" +#include "bearch.h" +#include "beirg.h" #include "belive.h" #include "besched.h" #include "beloopana.h" #include "bemodule.h" -DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL); +DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;) -#define HASH_LOOP_INFO(info) (HASH_PTR((info)->loop) ^ HASH_PTR((info)->cls)) +#define HASH_LOOP_INFO(info) (hash_ptr((info)->loop) ^ hash_ptr((info)->cls)) -typedef struct _be_loop_info_t { +typedef struct be_loop_info_t { ir_loop *loop; const arch_register_class_t *cls; unsigned max_pressure; } be_loop_info_t; -struct _be_loopana_t { +struct be_loopana_t { set *data; - be_irg_t *birg; + ir_graph *irg; }; -static int cmp_loop_info(const void *a, const void *b, size_t sz) { - const be_loop_info_t *i1 = a; - const be_loop_info_t *i2 = b; +static int cmp_loop_info(const void *a, const void *b, size_t size) +{ + const be_loop_info_t *i1 = (const be_loop_info_t*)a; + const be_loop_info_t *i2 = (const be_loop_info_t*)b; + (void) size; return ! (i1->loop == i2->loop && i1->cls == i2->cls); } /** * Compute the highest register pressure in a block. - * @param loop_ana The loop ana object. + * @param irg The graph. * @param block The block to compute pressure for. * @param cls The register class to compute pressure for. * @return The highest register pressure in the given block. */ -static unsigned be_compute_block_pressure(be_loopana_t *loop_ana, ir_node *block, const arch_register_class_t *cls) { - const be_irg_t *birg = loop_ana->birg; - const arch_env_t *aenv = be_get_birg_arch_env(birg); - be_lv_t *lv = be_get_birg_liveness(birg); - pset *live_nodes = pset_new_ptr_default(); - ir_node *irn; - int max_live; +static unsigned be_compute_block_pressure(const ir_graph *irg, + ir_node *block, + const arch_register_class_t *cls) +{ + be_lv_t *lv = be_get_irg_liveness(irg); + ir_nodeset_t live_nodes; + size_t max_live; DBG((dbg, LEVEL_1, "Processing Block %+F\n", block)); /* determine largest pressure with this block */ - live_nodes = be_liveness_end_of_block(lv, aenv, cls, block, live_nodes); - max_live = pset_count(live_nodes); + ir_nodeset_init(&live_nodes); + be_liveness_end_of_block(lv, cls, block, &live_nodes); + max_live = ir_nodeset_size(&live_nodes); sched_foreach_reverse(block, irn) { - int cnt; + size_t cnt; if (is_Phi(irn)) break; - live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes); - cnt = pset_count(live_nodes); - max_live = MAX(cnt, max_live); + be_liveness_transfer(cls, irn, &live_nodes); + cnt = ir_nodeset_size(&live_nodes); + max_live = MAX(cnt, max_live); } - DBG((dbg, LEVEL_1, "Finished with Block %+F (%s %u)\n", block, cls->name, max_live)); + DBG((dbg, LEVEL_1, "Finished with Block %+F (%s %zu)\n", block, cls->name, max_live)); - del_pset(live_nodes); + ir_nodeset_destroy(&live_nodes); return max_live; } /** - * Compute the highest register pressure in a loop and it's sub-loops. + * Compute the highest register pressure in a loop and its sub-loops. * @param loop_ana The loop ana object. * @param loop The loop to compute pressure for. * @param cls The register class to compute pressure for. * @return The highest register pressure in the given loop. */ -static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop, const arch_register_class_t *cls) { - int i, max; +static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop, + const arch_register_class_t *cls) +{ + size_t i, max; unsigned pressure; be_loop_info_t *entry, key; - DBG((dbg, LEVEL_1, "\nProcessing Loop %d\n", loop->loop_nr)); + DBG((dbg, LEVEL_1, "\nProcessing Loop %ld\n", loop->loop_nr)); assert(get_loop_n_elements(loop) > 0); pressure = 0; @@ -106,77 +112,80 @@ static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop, unsigned son_pressure; loop_element elem = get_loop_element(loop, i); - switch (*elem.kind) { - case k_ir_node: - son_pressure = be_compute_block_pressure(loop_ana, elem.node, cls); - break; - case k_ir_loop: - son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls); - break; - default: - panic("Unknown element found in loop"); - break; + if (*elem.kind == k_ir_node) + son_pressure = be_compute_block_pressure(loop_ana->irg, elem.node, cls); + else { + assert(*elem.kind == k_ir_loop); + son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls); } pressure = MAX(pressure, son_pressure); - } - DBG((dbg, LEVEL_1, "Done with loop %d, pressure %u for class %s\n", loop->loop_nr, pressure, cls->name)); + } + DBG((dbg, LEVEL_1, "Done with loop %ld, pressure %u for class %s\n", loop->loop_nr, pressure, cls->name)); /* update info in set */ key.loop = loop; key.cls = cls; key.max_pressure = 0; - entry = set_insert(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); + entry = set_insert(be_loop_info_t, loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); entry->max_pressure = MAX(entry->max_pressure, pressure); return pressure; } /** - * Compute the register pressure for a class of all loops in the birg. - * @param birg The backend irg object + * Compute the register pressure for a class of all loops in a graph + * @param irg The graph * @param cls The register class to compute the pressure for * @return The loop analysis object. */ -be_loopana_t *be_new_loop_pressure_cls(be_irg_t *birg, - const arch_register_class_t *cls) { - ir_graph *irg = be_get_birg_irg(birg); - be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana)); +be_loopana_t *be_new_loop_pressure_cls(ir_graph *irg, + const arch_register_class_t *cls) +{ + be_loopana_t *loop_ana = XMALLOC(be_loopana_t); loop_ana->data = new_set(cmp_loop_info, 16); - loop_ana->birg = birg; + loop_ana->irg = irg; DBG((dbg, LEVEL_1, "\n=====================================================\n", cls->name)); DBG((dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name)); DBG((dbg, LEVEL_1, "=====================================================\n", cls->name)); + assure_loopinfo(irg); + be_compute_loop_pressure(loop_ana, get_irg_loop(irg), cls); return loop_ana; } /** - * Compute the register pressure for all classes of all loops in the birg. - * @param birg The backend irg object + * Compute the register pressure for all classes of all loops in the irg. + * @param irg The graph * @return The loop analysis object. */ -be_loopana_t *be_new_loop_pressure(be_irg_t *birg) { - ir_graph *irg = be_get_birg_irg(birg); - be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana)); +be_loopana_t *be_new_loop_pressure(ir_graph *irg, + const arch_register_class_t *cls) +{ + be_loopana_t *loop_ana = XMALLOC(be_loopana_t); ir_loop *irg_loop = get_irg_loop(irg); - const arch_env_t *arch_env = be_get_birg_arch_env(birg); - const arch_isa_t *isa = arch_env->isa; + const arch_env_t *arch_env = be_get_irg_arch_env(irg); int i; loop_ana->data = new_set(cmp_loop_info, 16); - loop_ana->birg = birg; + loop_ana->irg = irg; - for (i = arch_isa_get_n_reg_class(isa) - 1; i >= 0; --i) { - const arch_register_class_t *cls = arch_isa_get_reg_class(isa, i); - DBG((dbg, LEVEL_1, "\n=====================================================\n", cls->name)); - DBG((dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name)); - DBG((dbg, LEVEL_1, "=====================================================\n", cls->name)); + assure_loopinfo(irg); + + if (cls != NULL) { be_compute_loop_pressure(loop_ana, irg_loop, cls); + } else { + for (i = arch_env->n_register_classes - 1; i >= 0; --i) { + const arch_register_class_t *cls = &arch_env->register_classes[i]; + DBG((dbg, LEVEL_1, "\n=====================================================\n", cls->name)); + DBG((dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name)); + DBG((dbg, LEVEL_1, "=====================================================\n", cls->name)); + be_compute_loop_pressure(loop_ana, irg_loop, cls); + } } return loop_ana; @@ -186,7 +195,8 @@ be_loopana_t *be_new_loop_pressure(be_irg_t *birg) { * Returns the computed register pressure for the given class and loop. * @return The pressure or INT_MAX if not found */ -unsigned be_get_loop_pressure(be_loopana_t *loop_ana, const arch_register_class_t *cls, ir_loop *loop) { +unsigned be_get_loop_pressure(be_loopana_t *loop_ana, const arch_register_class_t *cls, ir_loop *loop) +{ unsigned pressure = INT_MAX; be_loop_info_t *entry, key; @@ -194,12 +204,12 @@ unsigned be_get_loop_pressure(be_loopana_t *loop_ana, const arch_register_class_ key.loop = loop; key.cls = cls; - entry = set_find(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); + entry = set_find(be_loop_info_t, loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); if (entry) pressure = entry->max_pressure; else - assert(0 && "Pressure not computed for given class and loop object."); + panic("Pressure not computed for given class and loop object."); return pressure; } @@ -207,14 +217,14 @@ unsigned be_get_loop_pressure(be_loopana_t *loop_ana, const arch_register_class_ /** * Frees the loop analysis object. */ -void be_free_loop_pressure(be_loopana_t *loop_ana) { +void be_free_loop_pressure(be_loopana_t *loop_ana) +{ del_set(loop_ana->data); xfree(loop_ana); } +BE_REGISTER_MODULE_CONSTRUCTOR(be_init_loopana) void be_init_loopana(void) { FIRM_DBG_REGISTER(dbg, "firm.be.loopana"); } - -BE_REGISTER_MODULE_CONSTRUCTOR(be_init_loopana);