X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Fircgcons.c;h=bb438faea9ed79ea309f30c8efd4f62aa1df0a96;hb=f73f5c542edb2e4ff58a4bdc4f9d53415a14c4a1;hp=dcc793f28ed536138b864af3aea6c3ddccd02fd2;hpb=cff3ccfb35eb2e24d6c35b6f9f59d31b05df771c;p=libfirm diff --git a/ir/ir/ircgcons.c b/ir/ir/ircgcons.c index dcc793f28..bb438faea 100644 --- a/ir/ir/ircgcons.c +++ b/ir/ir/ircgcons.c @@ -1,47 +1,77 @@ -/* ------------------------------------------------------------------- - * $Id$ - * ------------------------------------------------------------------- - * Auf- und Abbau der interprozeduralen Darstellung (Explizite - * interprozedurale Abhängigkeiten). - * - * Erstellt: Hubert Schmid, 09.06.2002 - * ---------------------------------------------------------------- */ - - +/* + * Project: libFIRM + * File name: ir/ir/ircgcons.c + * Purpose: Construction and removal of interprocedural representation + * (explicit interprocedural dependencies). + * Author: Hubert Schmid + * Modified by: + * Created: 09.06.2002 + * CVS-ID: $Id$ + * Copyright: (c) 2002-2003 Universität Karlsruhe + * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE. + */ +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#ifdef HAVE_STRING_H #include +#endif + +#include #include "ircgcons.h" #include "array.h" #include "irprog.h" -#include "ircons.h" +#include "irnode_t.h" +#include "irprog_t.h" +#include "ircons_t.h" #include "irgmod.h" #include "irgwalk.h" -#include "irflag.h" -#include "misc.h" +#include "irflag_t.h" + + +/* Return the current state of the interprocedural view. */ +ip_view_state get_irp_ip_view_state(void) { + return irp->ip_view; +} + +/* Set the current state of the interprocedural view. */ +static void set_irp_ip_view(ip_view_state state) { + irp->ip_view = state; +} + +/* Set the state of the interprocedural view to invalid. */ +void set_irp_ip_view_invalid(void) { + set_irp_ip_view(ip_view_invalid); +} -/* Datenstruktur für jede Methode */ +/* Data for each method */ typedef struct { - int count; - bool open; /* offene Methode (mit unbekanntem Aufrufer) */ - ir_node * reg, * mem, ** res; /* EndReg, Mem und Rückgabewerte */ - ir_node * except, * except_mem; /* EndExcept und Mem für Ausnahmeabbruch */ + int count; /* Number of calleers. */ + bool open; /* Open method: called by an unknown caller */ + ir_node * reg, * mem, ** res; /* EndReg, Mem and Method return values */ + ir_node * except, * except_mem; /* EndExcept and Mem for exception return */ } irg_data_t; - static irg_data_t * irg_data_create(void) { - irg_data_t * data = xmalloc(sizeof(irg_data_t)); - memset(data, 0, sizeof(irg_data_t)); /* init */ + irg_data_t *data = xmalloc(sizeof(*data)); + memset(data, 0, sizeof(*data)); /* init */ return data; } - -/* Die Anzahl der Aufrufer jeder Methode zählen (irg_data_t->count), und die - * offenen Methoden (mit unbekannten Vorgänger) markieren. */ +/** Count the number of callers of each method and mark open methods. + * + * Fills the irg_data data structure. + * Open methods are methods with an unknown caller, I.e., methods that + * - are external visible + * - are dereferenced somewhere within the program (i.e., the address of the + * method is stored somewhere). */ static void caller_init(int arr_length, entity ** free_methods) { int i, j; for (i = get_irp_n_irgs() - 1; i >= 0; --i) { - set_entity_link(get_irg_ent(get_irp_irg(i)), irg_data_create()); + set_entity_link(get_irg_entity(get_irp_irg(i)), irg_data_create()); } for (i = arr_length - 1; i >= 0; --i) { irg_data_t * data = get_entity_link(free_methods[i]); @@ -50,15 +80,19 @@ static void caller_init(int arr_length, entity ** free_methods) { for (i = get_irp_n_irgs() - 1; i >= 0; --i) { ir_graph * irg = get_irp_irg(i); ir_node * call; - /* Die Call-Knoten sind (mit den Proj-Knoten) am End-Knoten verlinkt! */ + /* We collected all call nodes in a link list at the end node. */ for (call = get_irn_link(get_irg_end(irg)); call; call = get_irn_link(call)) { if (get_irn_op(call) != op_Call) continue; for (j = get_Call_n_callees(call) - 1; j >= 0; --j) { entity * ent = get_Call_callee(call, j); - if (ent) { + if (get_entity_irg(ent)) { irg_data_t * data = get_entity_link(ent); +# ifndef CATE_jni assert(get_entity_irg(ent) && data); ++data->count; +# endif /* ndef CATE_jni */ + } else { + set_entity_link(ent, NULL); } } } @@ -99,7 +133,7 @@ static void collect_phicallproj_walker(ir_node * node, ir_node ** call_tail) { *call_tail = node; } } else if (get_irn_op(node) == op_Phi) { - ir_node * block = get_nodes_Block(node); + ir_node * block = get_nodes_block(node); set_irn_link(node, get_irn_link(block)); set_irn_link(block, node); } @@ -125,6 +159,7 @@ static void collect_phicallproj(void) { ir_graph * irg = get_irp_irg(i); ir_node * start = get_irg_start(irg); ir_node * end = get_irg_end(irg); + current_ir_graph = irg; assert(irg && start); /* Die speziellen Parameter der Start-Operation extra verlinken, * auch wenn sie nicht im intraprozeduralen Graphen erreichbar @@ -142,10 +177,9 @@ static ir_node * exchange_proj(ir_node * proj) { ir_node * filter; assert(get_irn_op(proj) == op_Proj); filter = new_Filter(get_Proj_pred(proj), get_irn_mode(proj), get_Proj_proj(proj)); - assert(get_Proj_proj(proj) == get_Filter_proj(filter)); /* XXX:SID */ /* Die Proj- (Id-) Operation sollte im gleichen Grundblock stehen, wie die * Filter-Operation. */ - set_nodes_Block(proj, get_nodes_Block(filter)); + set_nodes_block(proj, get_nodes_block(filter)); exchange(proj, filter); return filter; } @@ -154,7 +188,7 @@ static ir_node * exchange_proj(ir_node * proj) { /* Echt neue Block-Operation erzeugen. CSE abschalten! */ static ir_node * create_Block(int n, ir_node ** in) { /* Turn off optimizations so that blocks are not merged again. */ - int rem_opt = get_optimize(); + int rem_opt = get_opt_optimize(); ir_node * block; set_optimize(0); block = new_Block(n, in); @@ -167,6 +201,18 @@ static void prepare_irg_end(ir_graph * irg, irg_data_t * data); static void prepare_irg_end_except(ir_graph * irg, irg_data_t * data); +/* If we use new_Unknown we get the Unknown of a graph. This can + * cause cycles we don't want to see, as Unknwon is in the Start Block + * of the procedure. Use unknown of outermost irg where the start + * block has no predecessors. */ +static INLINE ir_node *get_cg_Unknown(ir_mode *m) { + assert((get_Block_n_cfgpreds(get_irg_start_block(get_irp_main_irg())) == 1) && + (get_nodes_block(get_Block_cfgpred(get_irg_start_block(get_irp_main_irg()), 0)) == + get_irg_start_block(get_irp_main_irg()))); + return new_r_Unknown(get_irp_main_irg(), m); +} + + /* IRG vorbereiten. Proj-Operationen der Start-Operation in Filter-Operationen * umwandeln. Die künstlichen Steuerzusammenflüsse EndReg und EndExcept * einfügen. An der Start-Operation hängt nach dem Aufruf eine Liste der @@ -187,11 +233,11 @@ static void prepare_irg(ir_graph * irg, irg_data_t * data) { * den Start-Block verschieben. */ for (proj = get_irn_link(get_irg_start(irg)); proj; proj = get_irn_link(proj)) { if (get_Proj_pred(proj) != get_irg_start(irg) - || (get_Proj_proj(proj) != pns_initial_exec && get_Proj_proj(proj) != pns_args)) { + || (get_Proj_proj(proj) != pn_Start_X_initial_exec && get_Proj_proj(proj) != pn_Start_T_args)) { ir_node * filter = exchange_proj(proj); set_Filter_cg_pred_arr(filter, n_callers, in); } else { - set_nodes_Block(proj, start_block); + set_nodes_block(proj, start_block); } } @@ -205,21 +251,22 @@ static void prepare_irg(ir_graph * irg, irg_data_t * data) { ir_node * filter = get_Id_pred(proj); assert(get_irn_op(filter) == op_Filter); if (filter != link && get_irn_link(filter) == NULL) { - set_irn_link(link, filter); - link = filter; + set_irn_link(link, filter); + link = filter; } } } /* Globle Einträge für ersetzte Operationen korrigieren. */ - set_irg_frame(irg, skip_nop(get_irg_frame(irg))); - set_irg_globals(irg, skip_nop(get_irg_globals(irg))); + set_irg_frame (irg, skip_Id(get_irg_frame(irg))); + set_irg_globals (irg, skip_Id(get_irg_globals(irg))); + set_irg_initial_mem(irg, skip_Id(get_irg_initial_mem(irg))); /* Unbekannten Aufrufer sofort eintragen. */ if (data->open) { - set_Block_cg_cfgpred(start_block, 0, new_Unknown()); + set_Block_cg_cfgpred(start_block, 0, get_cg_Unknown(mode_X)); for (proj = get_irn_link(get_irg_start(irg)); proj; proj = get_irn_link(proj)) { if (get_irn_op(proj) == op_Filter) { - set_Filter_cg_pred(proj, 0, new_Unknown()); + set_Filter_cg_pred(proj, 0, get_cg_Unknown(get_irn_mode(proj))); } } data->count = 1; @@ -234,12 +281,13 @@ static void prepare_irg(ir_graph * irg, irg_data_t * data) { /* Künstlicher Steuerzusammenfluss EndReg einfügen. */ static void prepare_irg_end(ir_graph * irg, irg_data_t * data) { - ir_node * end_block = get_irg_end_block(irg); - ir_node * end = get_irg_end(irg); - ir_node ** ret_arr = NULL; + ir_node * end_block = get_irg_end_block(irg); + ir_node * end = get_irg_end(irg); + ir_node **ret_arr = NULL; + ir_node **cfgpred_arr = get_Block_cfgpred_arr(end_block); int i, j; int n_ret = 0; - ir_node ** cfgpred_arr = get_Block_cfgpred_arr(end_block); + for (i = get_Block_n_cfgpreds(end_block) - 1; i >= 0; --i) { if (get_irn_op(cfgpred_arr[i]) == op_Return) { if (ret_arr) { @@ -251,26 +299,31 @@ static void prepare_irg_end(ir_graph * irg, irg_data_t * data) { ++n_ret; } } + if (n_ret > 0) { - int n_res = get_method_n_ress(get_entity_type(get_irg_ent(irg))); + int n_res = get_method_n_ress(get_entity_type(get_irg_entity(irg))); ir_node ** in = NEW_ARR_F(ir_node *, n_ret); + /* block */ for (i = n_ret - 1; i >= 0; --i) { - set_irg_current_block(irg, get_nodes_Block(ret_arr[i])); + set_irg_current_block(irg, get_nodes_block(ret_arr[i])); in[i] = new_Jmp(); } create_Block(n_ret, in); + /* end */ data->reg = new_EndReg(); + /* mem */ for (i = n_ret - 1; i >= 0; --i) { in[i] = get_Return_mem(ret_arr[i]); } data->mem = new_Phi(n_ret, in, mode_M); - /* This Phi is a merge, therefor needs not be kept alive. + /* This Phi is a merge, therefore needs not be kept alive. It might be optimized away, though. */ if (get_End_keepalive(end, get_End_n_keepalives(end)-1 ) == data->mem) set_End_keepalive(end, get_End_n_keepalives(end)-1, new_Bad()); + /* res */ data->res = NEW_ARR_F(ir_node *, n_res); for (j = n_res - 1; j >= 0; --j) { @@ -286,8 +339,10 @@ static void prepare_irg_end(ir_graph * irg, irg_data_t * data) { else /* All preds are Bad */ data->res[j] = new_Bad(); } + DEL_ARR_F(in); } + if (ret_arr) DEL_ARR_F(ret_arr); } @@ -303,10 +358,10 @@ static void prepare_irg_end_except(ir_graph * irg, irg_data_t * data) { for (i = get_Block_n_cfgpreds(end_block) - 1; i >= 0; --i) { if (get_irn_op(cfgpred_arr[i]) != op_Return) { if (except_arr) { - ARR_APP1(ir_node *, except_arr, cfgpred_arr[i]); + ARR_APP1(ir_node *, except_arr, cfgpred_arr[i]); } else { - except_arr = NEW_ARR_F(ir_node *, 1); - except_arr[0] = cfgpred_arr[i]; + except_arr = NEW_ARR_F(ir_node *, 1); + except_arr[0] = cfgpred_arr[i]; } ++n_except; } @@ -319,22 +374,22 @@ static void prepare_irg_end_except(ir_graph * irg, irg_data_t * data) { data->except = new_EndExcept(); /* mem */ for (i = n_except - 1; i >= 0; --i) { - ir_node * node = skip_Proj(except_arr[i]); + ir_node * node = skip_Proj(skip_Tuple(except_arr[i])); if (get_irn_op(node) == op_Call) { - in[i] = new_r_Proj(irg, get_nodes_Block(node), node, mode_M, 3); + in[i] = new_r_Proj(irg, get_nodes_block(node), node, mode_M, 3); } else if (get_irn_op(node) == op_Raise) { - in[i] = new_r_Proj(irg, get_nodes_Block(node), node, mode_M, 1); + in[i] = new_r_Proj(irg, get_nodes_block(node), node, mode_M, 1); } else { - assert(is_fragile_op(node)); - /* We rely that all cfops have the memory output at the same position. */ - in[i] = new_r_Proj(irg, get_nodes_Block(node), node, mode_M, 0); + assert(is_fragile_op(node)); + /* We rely that all cfops have the memory output at the same position. */ + in[i] = new_r_Proj(irg, get_nodes_block(node), node, mode_M, 0); } } data->except_mem = new_Phi(n_except, in, mode_M); /* This Phi is a merge, therefor needs not be kept alive. It might be optimized away, though. */ if (get_End_keepalive(end, get_End_n_keepalives(end)-1 ) - == data->except_mem) + == data->except_mem) set_End_keepalive(end, get_End_n_keepalives(end)-1, new_Bad()); DEL_ARR_F(in); } @@ -344,7 +399,7 @@ static void prepare_irg_end_except(ir_graph * irg, irg_data_t * data) { /* Zwischengespeicherte Daten wieder freigeben. */ static void cleanup_irg(ir_graph * irg) { - entity * ent = get_irg_ent(irg); + entity * ent = get_irg_entity(irg); irg_data_t * data = get_entity_link(ent); assert(data); if (data->res) DEL_ARR_F(data->res); @@ -359,7 +414,7 @@ static void cleanup_irg(ir_graph * irg) { static void move_phis(ir_node * from_block, ir_node * to_block) { ir_node * phi; for (phi = get_irn_link(from_block); phi != NULL; phi = get_irn_link(phi)) { - set_nodes_Block(phi, to_block); + set_nodes_block(phi, to_block); } assert(get_irn_link(to_block) == NULL); set_irn_link(to_block, get_irn_link(from_block)); @@ -368,16 +423,27 @@ static void move_phis(ir_node * from_block, ir_node * to_block) { /* Rekursiv die Operation "node" und alle ihre Vorgänger aus dem Block - * "from_block" nach "to_block" verschieben. */ + * "from_block" nach "to_block" verschieben. + * Verschiebe ebenfalls die Projs aus diesen Operationen. */ static void move_nodes(ir_node * from_block, ir_node * to_block, ir_node * node) { - int i; - for (i = get_irn_arity(node) - 1; i >= 0; --i) { + int i, arity = get_irn_arity(node); + ir_node *proj; + + for (i = arity - 1; i >= 0; --i) { ir_node * pred = get_irn_n(node, i); - if (get_nodes_Block(pred) == from_block) { + if (get_nodes_block(pred) == from_block) { move_nodes(from_block, to_block, pred); } } - set_nodes_Block(node, to_block); + set_nodes_block(node, to_block); + + /* Move projs of this node. */ + proj = get_irn_link(node); + for (; proj; proj = skip_Id(get_irn_link(proj))) { + if (get_irn_op(proj) != op_Proj && get_irn_op(proj) != op_Filter) continue; + if ((get_nodes_block(proj) == from_block) && (skip_Proj(get_irn_n(proj, 0)) == node)) + set_nodes_block(proj, to_block); + } } @@ -385,38 +451,40 @@ static void move_nodes(ir_node * from_block, ir_node * to_block, ir_node * node) * Start-Block auf den Aufrufer hinzufügen. */ static void construct_start(entity * caller, entity * callee, ir_node * call, ir_node * exec) { - irg_data_t * data = get_entity_link(callee); - ir_graph * irg = get_entity_irg(callee); - ir_node * start = get_irg_start(irg), * filter; + irg_data_t *data = get_entity_link(callee); + ir_graph *irg = get_entity_irg(callee); + ir_node *start = get_irg_start(irg); + ir_node *filter; assert(irg); - assert(get_entity_peculiarity(callee) == existent); /* Else data is not initalized. */ + assert(get_entity_peculiarity(callee) == peculiarity_existent); /* Else data is not initalized. */ assert((0 <= data->count) && - (data->count < get_Block_cg_n_cfgpreds(get_nodes_Block(start)))); - set_Block_cg_cfgpred(get_nodes_Block(start), data->count, exec); + (data->count < get_Block_cg_n_cfgpreds(get_nodes_block(start)))); + + set_Block_cg_cfgpred(get_nodes_block(start), data->count, exec); for (filter = get_irn_link(start); filter; filter = get_irn_link(filter)) { if (get_irn_op(filter) != op_Filter) continue; if (get_Proj_pred(filter) == start) { switch ((int) get_Proj_proj(filter)) { - case pns_global_store: - set_Filter_cg_pred(filter, data->count, get_Call_mem(call)); - break; - case pns_frame_base: - /* "frame_base" wird nur durch Unknown dargestellt. Man kann ihn aber - * auch explizit darstellen, wenn sich daraus Vorteile für die - * Datenflussanalyse ergeben. */ - set_Filter_cg_pred(filter, data->count, new_Unknown()); - break; - case pns_globals: - /* "globals" wird nur durch Unknown dargestellt. Man kann ihn aber auch - * explizit darstellen, wenn sich daraus Vorteile für die - * Datenflussanalyse ergeben. */ - set_Filter_cg_pred(filter, data->count, new_Unknown()); - break; + case pn_Start_M: + set_Filter_cg_pred(filter, data->count, get_Call_mem(call)); + break; + case pn_Start_P_frame_base: + /* "frame_base" wird nur durch Unknown dargestellt. Man kann ihn aber + * auch explizit darstellen, wenn sich daraus Vorteile für die + * Datenflussanalyse ergeben. */ + set_Filter_cg_pred(filter, data->count, get_cg_Unknown(get_irn_mode(filter))); + break; + case pn_Start_P_globals: + /* "globals" wird nur durch Unknown dargestellt. Man kann ihn aber auch + * explizit darstellen, wenn sich daraus Vorteile für die + * Datenflussanalyse ergeben. */ + set_Filter_cg_pred(filter, data->count, get_cg_Unknown(get_irn_mode(filter))); + break; default: - /* not reached */ - assert(0 && "not reached"); - break; + /* not reached */ + assert(0 && "not reached"); + break; } } else { set_Filter_cg_pred(filter, data->count, get_Call_param(call, get_Proj_proj(filter))); @@ -438,7 +506,7 @@ static void fill_mem(int length, irg_data_t * data[], ir_node * in[]) { in[i] = new_Bad(); } } else { /* unknown */ - in[i] = new_Unknown(); + in[i] = get_cg_Unknown(mode_M); } } } @@ -456,7 +524,7 @@ static void fill_except_mem(int length, irg_data_t * data[], ir_node * in[]) { in[i] = new_Bad(); } } else { /* unknown */ - in[i] = new_Unknown(); + in[i] = get_cg_Unknown(mode_M); } } } @@ -464,7 +532,7 @@ static void fill_except_mem(int length, irg_data_t * data[], ir_node * in[]) { /* Abhängigkeiten für ein Ergebnis über alle aufgerufenen Methoden * bestimmen. */ -static void fill_result(int pos, int length, irg_data_t * data[], ir_node * in[]) { +static void fill_result(int pos, int length, irg_data_t * data[], ir_node * in[], ir_mode *m) { int i; for (i = 0; i < length; ++i) { if (data[i]) { /* explicit */ @@ -474,7 +542,7 @@ static void fill_result(int pos, int length, irg_data_t * data[], ir_node * in[] in[i] = new_Bad(); } } else { /* unknown */ - in[i] = new_Unknown(); + in[i] = get_cg_Unknown(m); } } } @@ -493,142 +561,235 @@ static ir_node * get_except(ir_node * call) { return NULL; } +/* Returns true if control flow operation exc is predecessor of end + block in irg. Works also for Return nodes, not only exceptions. */ +static bool exc_branches_to_end(ir_graph *irg, ir_node *exc) { + int i; + ir_node *end = get_irg_end_block(irg); + for (i = get_Block_n_cfgpreds(end) -1; i >= 0; --i) + if (get_Block_cfgpred(end, i) == exc) return true; + return false; +} + +/* Returns true if only caller of irg is "Unknown". */ +static bool is_outermost_graph(ir_graph *irg) { + irg_data_t * data = get_entity_link(get_irg_entity(irg)); + if (data->count) { + return false; + } else if (data->open) { + /* Die Methode wird nur von "der" unbekannten Aufrufstelle + * aufgerufen. Darstellung wird für diese Methode nicht + * geändert. */ + } else { + /* Methode kann nicht aufgerufen werden. Die Darstellung wird + * für diese Methode nicht geändert. Das kann nicht vorkommen, + * wenn zuvor "gc_irgs()" aufgerufen wurde. */ + } + return true; +} /* Grundblock der Call-Operation aufteilen. CallBegin- und Filter-Operationen * einfügen. Die Steuer- und Datenflussabhängigkeiten von den aufgerufenen * Methoden auf die CallBegin-Operation, und von der Aufrufstelle auf die * aufgerufenen Methoden eintragen. */ static void construct_call(ir_node * call) { - int n_callees = get_Call_n_callees(call); - ir_node * post_block = get_nodes_Block(call); /* block nach dem Aufruf */ - ir_node * pre_block = create_Block(get_Block_n_cfgpreds(post_block), - get_Block_cfgpred_arr(post_block)); /* block vor dem Aufruf (mit CallBegin) */ - ir_node * except_block = NULL, * proj; - ir_node * jmp = new_Break(); /* Sprung für intraprozedurale Darstellung (in - * pre_block) */ - ir_node * call_begin = new_CallBegin(call); /* (in pre_block) */ - ir_node ** in = NEW_ARR_F(ir_node *, n_callees); - entity * caller = get_irg_ent(current_ir_graph); /* entity des aktuellen ir_graph */ - entity ** callees = NEW_ARR_F(entity *, n_callees); /* aufgerufene Methoden: entity */ - ir_graph ** irgs = NEW_ARR_F(ir_graph *, n_callees); /* aufgerufene Methoden: ir_graph */ - irg_data_t ** data = NEW_ARR_F(irg_data_t *, n_callees); /* aufgerufene Methoden: irg_data_t */ - int i; + int i, n_callees; + ir_node *post_block, *pre_block, *except_block, * proj, *jmp, *call_begin; + ir_node ** in; + entity * caller; + entity ** callees; + ir_graph ** irgs; + irg_data_t ** data; + + n_callees = get_Call_n_callees(call); + post_block = get_nodes_block(call); /* block nach dem Aufruf */ + pre_block = create_Block(get_Block_n_cfgpreds(post_block), + get_Block_cfgpred_arr(post_block)); /* block vor dem Aufruf (mit CallBegin) */ + except_block = NULL; + jmp = new_Break(); /* Sprung für intraprozedurale Darstellung (in * pre_block) */ + call_begin = new_CallBegin(call); /* (in pre_block) */ + /* CallBegin might be entry to endless recursion. */ + add_End_keepalive(get_irg_end(get_irn_irg(pre_block)), pre_block); + + in = NEW_ARR_F(ir_node *, n_callees); + caller = get_irg_entity(current_ir_graph); /* entity des aktuellen ir_graph */ + callees = NEW_ARR_F(entity *, n_callees); /* aufgerufene Methoden: entity */ + irgs = NEW_ARR_F(ir_graph *, n_callees); /* aufgerufene Methoden: ir_graph */ + data = NEW_ARR_F(irg_data_t *, n_callees); /* aufgerufene Methoden: irg_data_t */ /* post_block kann bereits interprozedurale Steuerflussvorgänger * besitzen. Diese müssen dann auch noch für den pre_block gesetzt werden. */ if (get_Block_cg_cfgpred_arr(post_block)) { set_Block_cg_cfgpred_arr(pre_block, get_Block_cg_n_cfgpreds(post_block), - get_Block_cg_cfgpred_arr(post_block)); + get_Block_cg_cfgpred_arr(post_block)); remove_Block_cg_cfgpred_arr(post_block); } /* Operationen verschieben */ move_phis(post_block, pre_block); move_nodes(post_block, pre_block, call); - /* @@@ GL Wer setzt die Laenge des PostBlock cgfpred array auf 1? - GL: na, dieser Befehl... generiert neuen array. */ set_irn_in(post_block, 1, &jmp); /* Wiederverwendete Daten initialisieren. */ for (i = 0; i < n_callees; ++i) { callees[i] = get_Call_callee(call, i); - irgs[i] = callees[i] ? get_entity_irg(callees[i]) : NULL; + irgs[i] = get_entity_irg(callees[i]); data[i] = get_entity_link(callees[i]); + /* Only entities that have an irg got a irg_data data structure. + In others there is some arbitrary garbage in the link field. */ + if (!irgs[i]) { assert(!data[i]); data[i] = NULL; } } + /* + * Set flag to suppress verifying placement on proper irg: + * optimization can return block on other irg. + */ + set_interprocedural_view(1); + /* Die interprozeduralen Steuerflussvorgänger des post_block * bestimmen. */ for (i = 0; i < n_callees; ++i) { if (data[i]) { /* explicit */ if (data[i]->reg) { - in[i] = new_r_Proj(irgs[i], get_nodes_Block(data[i]->reg), - data[i]->reg, mode_X, data[i]->count); + in[i] = new_r_Proj(irgs[i], get_nodes_block(data[i]->reg), + data[i]->reg, mode_X, data[i]->count); } else { - in[i] = new_Bad(); + in[i] = new_Bad(); } } else { /* unknown */ - in[i] = new_Unknown(); + in[i] = get_cg_Unknown(mode_X); } } + set_interprocedural_view(0); + set_Block_cg_cfgpred_arr(post_block, n_callees, in); /* Die interprozeduralen Steuerflussvorgänger des except_block * bestimmen. */ if ((proj = get_except(call)) != NULL) { - except_block = create_Block(1, &proj); - set_nodes_Block(proj, except_block); - exchange(proj, new_Break()); - set_irg_current_block(current_ir_graph, pre_block); - set_irn_n(except_block, 0, new_Proj(call, mode_X, 1)); - set_irg_current_block(current_ir_graph, post_block); + int preds = 0; + bool exc_to_end = false; + if (exc_branches_to_end(current_ir_graph, proj)) { + /* The Call aborts the procedure if it returns with an exception. + If this is an outermost procedure, the normal handling of exceptions + will generate a Break that goes to the end block. This is illegal + Frim. So directly branch to the end block with all exceptions. */ + exc_to_end = true; + if (is_outermost_graph(current_ir_graph)) { + except_block = get_irg_end_block(current_ir_graph); + } else { + irg_data_t * tmp_data = get_entity_link(get_irg_entity(current_ir_graph)); + except_block = get_nodes_block(tmp_data->except); + } + } else { + except_block = create_Block(1, &proj); + set_nodes_block(proj, except_block); + exchange(proj, new_Break()); + set_irg_current_block(current_ir_graph, pre_block); + set_irn_n(except_block, 0, new_Proj(call, mode_X, 1)); + set_irg_current_block(current_ir_graph, post_block); + } + + /* + * Set flag to suppress verifying placement on proper irg: + * optimization can return block on other irg. + */ + set_interprocedural_view(1); + for (i = 0; i < n_callees; ++i) { entity * callee = get_Call_callee(call, i); if (data[i]) { /* explicit */ - if (data[i]->except) { - in[i] = new_r_Proj(get_entity_irg(callee), get_nodes_Block(data[i]->except), - data[i]->except, mode_X, data[i]->count); - } else { - in[i] = new_Bad(); - } + if (data[i]->except) { + in[i] = new_r_Proj(get_entity_irg(callee), get_nodes_block(data[i]->except), + data[i]->except, mode_X, data[i]->count); + } else { + in[i] = new_Bad(); + } } else { /* unknown */ - in[i] = new_Unknown(); + in[i] = get_cg_Unknown(mode_X); } } - set_Block_cg_cfgpred_arr(except_block, n_callees, in); + + preds = n_callees; + if (exc_to_end) { + /* append all existing preds of the end block to new in array. + * Normal access routine guarantees that with first visit we + * get the normal preds, and from then on the _cg_ preds. + * (interprocedural view is set!) + * Do not add the exc pred of end we are replacing! */ + for (i = get_Block_n_cfgpreds(except_block)-1; i >= 0; --i) { + ir_node *pred = get_Block_cfgpred(except_block, i); + if (pred != proj) { + ARR_APP1(ir_node *, in, pred); + preds++; + } + } + } + set_Block_cg_cfgpred_arr(except_block, preds, in); } + set_interprocedural_view(0); /* Diesen Vorgänger in den Start-Blöcken der aufgerufenen Methoden * eintragen. */ set_irg_current_block(current_ir_graph, pre_block); for (i = 0; i < n_callees; ++i) { - construct_start(caller, callees[i], call, new_Proj(call_begin, mode_X, i)); + if (irgs[i]) /* Else there is not graph to call */ + construct_start(caller, callees[i], call, new_Proj(call_begin, mode_X, i)); } /* Proj-Operationen in Filter-Operationen umwandeln und * interprozedurale Vorgänger einfügen. */ set_irg_current_block(current_ir_graph, post_block); - for (proj = get_irn_link(call); proj && get_irn_op(proj) == op_Proj; proj = get_irn_link(proj)) { + for (proj = get_irn_link(call); proj; proj = get_irn_link(proj)) { + if (get_irn_op(proj) != op_Proj) continue; + if (skip_Proj(get_Proj_pred(proj)) != call) continue; if (get_Proj_pred(proj) == call) { - if (get_Proj_proj(proj) == 0) { /* memory */ - /* memory */ - ir_node * filter = exchange_proj(proj); - /* filter in die Liste der Phis aufnehmen */ - if (get_irn_link(filter) == NULL) { /* note CSE */ - set_irn_link(filter, get_irn_link(post_block)); - set_irn_link(post_block, filter); - } - fill_mem(n_callees, data, in); - set_Filter_cg_pred_arr(filter, n_callees, in); - } else if (get_Proj_proj(proj) == 1) { /* except */ - /* nothing: siehe oben */ - } else if (get_Proj_proj(proj) == 2) { /* results */ - set_nodes_Block(proj, pre_block); - } else if (get_Proj_proj(proj) == 3) { /* except_mem */ - /* except_mem */ - ir_node * filter; - assert(except_block); - set_irg_current_block(current_ir_graph, except_block); - filter = exchange_proj(proj); - /* filter in die Liste der Phis aufnehmen */ - if (get_irn_link(filter) == NULL) { /* note CSE */ - set_irn_link(filter, get_irn_link(except_block)); - set_irn_link(except_block, filter); - } - set_irg_current_block(current_ir_graph, post_block); - fill_except_mem(n_callees, data, in); - set_Filter_cg_pred_arr(filter, n_callees, in); + if (get_Proj_proj(proj) == pn_Call_M_regular) { /* memory */ + ir_node * filter; + + set_nodes_block(proj, post_block); + filter = exchange_proj(proj); + /* filter in die Liste der Phis aufnehmen */ + if (get_irn_link(filter) == NULL) { /* note CSE */ + set_irn_link(filter, get_irn_link(post_block)); + set_irn_link(post_block, filter); + } + fill_mem(n_callees, data, in); + set_Filter_cg_pred_arr(filter, n_callees, in); + } else if (get_Proj_proj(proj) == pn_Call_X_except) { /* except */ + /* nothing: siehe oben */ + } else if (get_Proj_proj(proj) == pn_Call_T_result) { /* results */ + /* nothing */ + } else if (get_Proj_proj(proj) == pn_Call_M_except) { /* except_mem */ + ir_node * filter; + + set_nodes_block(proj, post_block); + assert(except_block); + set_irg_current_block(current_ir_graph, except_block); + filter = exchange_proj(proj); + /* filter in die Liste der Phis aufnehmen */ + if (get_irn_link(filter) == NULL) { /* note CSE */ + set_irn_link(filter, get_irn_link(except_block)); + set_irn_link(except_block, filter); + } + set_irg_current_block(current_ir_graph, post_block); + fill_except_mem(n_callees, data, in); + set_Filter_cg_pred_arr(filter, n_callees, in); } else { - assert(0 && "not reached"); + assert(0 && "not reached"); } - } else { - /* result */ - ir_node * filter = exchange_proj(proj); + } else { /* result */ + ir_node * filter; + + assert(is_Proj(get_Proj_pred(proj)) && get_Proj_pred(get_Proj_pred(proj)) == call); + set_nodes_block(proj, post_block); + filter = exchange_proj(proj); /* filter in die Liste der Phis aufnehmen */ - if (get_irn_link(filter) == NULL) { /* note CSE */ - set_irn_link(filter, get_irn_link(post_block)); - set_irn_link(post_block, filter); + if (get_irn_link(filter) == NULL) { /* not CSE */ + set_irn_link(filter, get_irn_link(post_block)); + set_irn_link(post_block, filter); } - fill_result(get_Proj_proj(filter), n_callees, data, in); + fill_result(get_Proj_proj(filter), n_callees, data, in, get_irn_mode(filter)); set_Filter_cg_pred_arr(filter, n_callees, in); } } @@ -642,6 +803,10 @@ static void construct_call(ir_node * call) { void cg_construct(int arr_len, entity ** free_methods_arr) { int i; + if (get_irp_ip_view_state() == ip_view_valid) return; + if (get_irp_ip_view_state() == ip_view_invalid) cg_destruct(); + set_irp_ip_view(ip_view_valid); + collect_phicallproj(); /* count callers */ @@ -650,7 +815,7 @@ void cg_construct(int arr_len, entity ** free_methods_arr) { /* prepare irgs */ for (i = get_irp_n_irgs() - 1; i >= 0; --i) { ir_graph * irg = get_irp_irg(i); - entity * ent = get_irg_ent(irg); + entity * ent = get_irg_entity(irg); irg_data_t * data = get_entity_link(ent); if (data->count) { prepare_irg(irg, data); @@ -668,13 +833,16 @@ void cg_construct(int arr_len, entity ** free_methods_arr) { /* construct calls */ for (i = get_irp_n_irgs() - 1; i >= 0; --i) { ir_node * node; + current_ir_graph = get_irp_irg(i); for (node = get_irn_link(get_irg_end(current_ir_graph)); node; node = get_irn_link(node)) { if (get_irn_op(node) == op_Call) { - int n_callees = get_Call_n_callees(node); - if (n_callees > 1 || (n_callees == 1 && get_Call_callee(node, 0) != NULL)) { + int j, n_callees = get_Call_n_callees(node); + for (j = 0; j < n_callees; ++j) + if (get_entity_irg(get_Call_callee(node, j))) + break; + if (j < n_callees) /* There is an entity with a graph */ construct_call(node); - } } } } @@ -692,24 +860,40 @@ void cg_construct(int arr_len, entity ** free_methods_arr) { static void destruct_walker(ir_node * node, void * env) { if (get_irn_op(node) == op_Block) { remove_Block_cg_cfgpred_arr(node); + /* Do not turn Break into Jmp. Better: merge blocks right away. */ + if (get_Block_n_cfgpreds(node) == 1) { + ir_node *pred = get_Block_cfgpred(node, 0); + if (get_irn_op(pred) == op_Break) + exchange(node, get_nodes_block(pred)); + } } else if (get_irn_op(node) == op_Filter) { - set_irg_current_block(current_ir_graph, get_nodes_Block(node)); + set_irg_current_block(current_ir_graph, get_nodes_block(node)); exchange(node, new_Proj(get_Filter_pred(node), get_irn_mode(node), get_Filter_proj(node))); } else if (get_irn_op(node) == op_Break) { - set_irg_current_block(current_ir_graph, get_nodes_Block(node)); - exchange(node, new_Jmp()); + //set_irg_current_block(current_ir_graph, get_nodes_block(node)); + //exchange(node, new_Jmp()); } else if (get_irn_op(node) == op_Call) { remove_Call_callee_arr(node); + } else if (get_irn_op(node) == op_Proj) { + /* some ProjX end up in strange blocks. */ + set_nodes_block(node, get_nodes_block(get_Proj_pred(node))); } } void cg_destruct(void) { int i; - for (i = get_irp_n_irgs() - 1; i >= 0; --i) { - ir_graph * irg = get_irp_irg(i); - irg_walk_graph(irg, destruct_walker, clear_link, NULL); - set_irg_frame(irg, skip_nop(get_irg_frame(irg))); - set_irg_globals(irg, skip_nop(get_irg_globals(irg))); + if (get_irp_ip_view_state() != ip_view_no) { + for (i = get_irp_n_irgs() - 1; i >= 0; --i) { + ir_graph * irg = get_irp_irg(i); + irg_walk_graph(irg, destruct_walker, clear_link, NULL); + set_irg_frame(irg, skip_Id(get_irg_frame(irg))); + set_irg_globals(irg, skip_Id(get_irg_globals(irg))); + set_irg_initial_mem(irg, skip_Id(get_irg_initial_mem(irg))); + set_irg_callee_info_state(irg, irg_callee_info_none); + set_irg_end_reg(irg, get_irg_end(irg)); + set_irg_end_except(irg, get_irg_end(irg)); + } + set_irp_ip_view(ip_view_no); } }