X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeloopana.c;h=42a06b0b04522329929470cc51fd1a0399563d76;hb=8535fe8732b0acf822be252812a7158ce5b8134a;hp=047069db28acd41e2d09b995c3d7b6efd41fb2f5;hpb=06689bfead82631c9c022c3e28977bd7db6d9f6e;p=libfirm diff --git a/ir/be/beloopana.c b/ir/be/beloopana.c index 047069db2..42a06b0b0 100644 --- a/ir/be/beloopana.c +++ b/ir/be/beloopana.c @@ -8,7 +8,7 @@ * Compute register pressure in loops */ #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif #include "set.h" @@ -21,6 +21,11 @@ #include "belive.h" #include "besched.h" #include "beloopana.h" +#include "bemodule.h" + +DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL); + +#define HASH_LOOP_INFO(info) (HASH_PTR((info)->loop) ^ HASH_PTR((info)->cls)) typedef struct _be_loop_info_t { ir_loop *loop; @@ -31,7 +36,6 @@ typedef struct _be_loop_info_t { struct _be_loopana_t { set *data; be_irg_t *birg; - DEBUG_ONLY(firm_dbg_module_t *dbg); }; static int cmp_loop_info(const void *a, const void *b, size_t sz) { @@ -54,6 +58,8 @@ static unsigned be_compute_block_pressure(be_loopana_t *loop_ana, ir_node *block ir_node *irn; int max_live; + DBG((dbg, LEVEL_1, "Processing Block %+F\n", block)); + /* determine largest pressure with this block */ live_nodes = be_liveness_end_of_block(loop_ana->birg->lv, aenv, cls, block, live_nodes); max_live = pset_count(live_nodes); @@ -69,6 +75,8 @@ static unsigned be_compute_block_pressure(be_loopana_t *loop_ana, ir_node *block max_live = MAX(cnt, max_live); } + DBG((dbg, LEVEL_1, "Finished with Block %+F (%s %u)\n", block, cls->name, max_live)); + del_pset(live_nodes); return max_live; } @@ -81,37 +89,40 @@ static unsigned be_compute_block_pressure(be_loopana_t *loop_ana, ir_node *block * @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, pressure; + int i, max; + unsigned pressure; be_loop_info_t *entry, key; - DBG((loop_ana->dbg, LEVEL_1, "Processing Loop %d\n", loop->loop_nr)); + DBG((dbg, LEVEL_1, "\nProcessing Loop %d\n", loop->loop_nr)); assert(get_loop_n_elements(loop) > 0); pressure = 0; /* determine maximal pressure in all loop elements */ for (i = 0, max = get_loop_n_elements(loop); i < max; ++i) { + unsigned son_pressure; loop_element elem = get_loop_element(loop, i); + switch (*elem.kind) { case k_ir_node: - pressure = be_compute_block_pressure(loop_ana, elem.node, cls); + son_pressure = be_compute_block_pressure(loop_ana, elem.node, cls); break; - case k_ir_loop: { - unsigned son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls); - pressure = MAX(pressure, son_pressure); + case k_ir_loop: + son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls); break; - } default: assert(0); break; } + + pressure = MAX(pressure, son_pressure); } - DBG((loop_ana->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 %d, pressure %u for class %s\n", loop->loop_nr, pressure, cls->name)); /* update info in set */ - key.loop = loop; - key.loop = 0; - key.cls = cls; - entry = set_insert(loop_ana->data, &key, sizeof(key), HASH_PTR(loop)); + key.loop = loop; + key.cls = cls; + key.max_pressure = 0; + entry = set_insert(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); entry->max_pressure = MAX(entry->max_pressure, pressure); return pressure; @@ -124,11 +135,14 @@ static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop, * @return The loop analysis object. */ be_loopana_t *be_new_loop_pressure_cls(be_irg_t *birg, const arch_register_class_t *cls) { - be_loopana_t *loop_ana = xmalloc(sizeof(loop_ana)); + be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana)); loop_ana->data = new_set(cmp_loop_info, 16); loop_ana->birg = birg; - FIRM_DBG_REGISTER(loop_ana->dbg, "firm.be.loopana"); + + 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, get_irg_loop(birg->irg), cls); @@ -141,16 +155,18 @@ be_loopana_t *be_new_loop_pressure_cls(be_irg_t *birg, const arch_register_class * @return The loop analysis object. */ be_loopana_t *be_new_loop_pressure(be_irg_t *birg) { - be_loopana_t *loop_ana = xmalloc(sizeof(loop_ana)); + be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana)); ir_loop *irg_loop = get_irg_loop(birg->irg); int i; loop_ana->data = new_set(cmp_loop_info, 16); loop_ana->birg = birg; - FIRM_DBG_REGISTER(loop_ana->dbg, "firm.be.loopana"); for (i = arch_isa_get_n_reg_class(birg->main_env->arch_env->isa) - 1; i >= 0; --i) { const arch_register_class_t *cls = arch_isa_get_reg_class(birg->main_env->arch_env->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)); be_compute_loop_pressure(loop_ana, irg_loop, cls); } @@ -169,7 +185,7 @@ 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_PTR(&key)); + entry = set_find(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key)); if (entry) pressure = entry->max_pressure; @@ -186,3 +202,10 @@ void be_free_loop_pressure(be_loopana_t *loop_ana) { del_set(loop_ana->data); xfree(loop_ana); } + +void be_init_loopana(void) +{ + FIRM_DBG_REGISTER(dbg, "firm.be.loopana"); +} + +BE_REGISTER_MODULE_CONSTRUCTOR(be_init_loopana);