X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fregrename.c;h=c678a093ca92613f6082455cd2e02e821c88c65e;hb=9af964d4a49319aa1148819f21c2a352c2ea44e0;hp=6cabe434e1cbc5a38c7f985d677dd0b655aad488;hpb=a2c6f0b7da35eadcfafa42e5ad04647c2696fbb4;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/regrename.c b/gcc/regrename.c index 6cabe434e1c..c678a093ca9 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -1,12 +1,12 @@ /* Register renaming for the GNU compiler. - Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 + Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. 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 2, or (at your option) + 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 @@ -15,9 +15,8 @@ License for more details. You should have received a copy of the GNU General Public License - along with GCC; see the file COPYING. If not, write to the Free - Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA - 02110-1301, USA. */ + along with GCC; see the file COPYING3. If not see + . */ #include "config.h" #include "system.h" @@ -39,6 +38,7 @@ #include "obstack.h" #include "timevar.h" #include "tree-pass.h" +#include "df.h" struct du_chain { @@ -88,16 +88,16 @@ static void scan_rtx (rtx, rtx *, enum reg_class, enum scan_actions, enum op_type, int); static struct du_chain *build_def_use (basic_block); static void dump_def_use_chain (struct du_chain *); -static void note_sets (rtx, rtx, void *); -static void clear_dead_regs (HARD_REG_SET *, enum machine_mode, rtx); +static void note_sets (rtx, const_rtx, void *); +static void clear_dead_regs (HARD_REG_SET *, enum reg_note, rtx); static void merge_overlapping_regs (basic_block, HARD_REG_SET *, struct du_chain *); -/* Called through note_stores from update_life. Find sets of registers, and +/* Called through note_stores. Find sets of registers, and record them in *DATA (which is actually a HARD_REG_SET *). */ static void -note_sets (rtx x, rtx set ATTRIBUTE_UNUSED, void *data) +note_sets (rtx x, const_rtx set ATTRIBUTE_UNUSED, void *data) { HARD_REG_SET *pset = (HARD_REG_SET *) data; @@ -114,7 +114,7 @@ note_sets (rtx x, rtx set ATTRIBUTE_UNUSED, void *data) in the list NOTES. */ static void -clear_dead_regs (HARD_REG_SET *pset, enum machine_mode kind, rtx notes) +clear_dead_regs (HARD_REG_SET *pset, enum reg_note kind, rtx notes) { rtx note; for (note = notes; note; note = XEXP (note, 1)) @@ -137,8 +137,15 @@ merge_overlapping_regs (basic_block b, HARD_REG_SET *pset, struct du_chain *t = chain; rtx insn; HARD_REG_SET live; + df_ref *def_rec; - REG_SET_TO_HARD_REG_SET (live, b->il.rtl->global_live_at_start); + REG_SET_TO_HARD_REG_SET (live, df_get_live_in (b)); + for (def_rec = df_get_artificial_defs (b->index); *def_rec; def_rec++) + { + df_ref def = *def_rec; + if (DF_REF_FLAGS (def) & DF_REF_AT_TOP) + SET_HARD_REG_BIT (live, DF_REF_REGNO (def)); + } insn = BB_HEAD (b); while (t) { @@ -181,10 +188,15 @@ regrename_optimize (void) basic_block bb; char *first_obj; + df_set_flags (DF_LR_RUN_DCE); + df_note_add_problem (); + df_analyze (); + df_set_flags (DF_DEFER_INSN_RESCAN); + memset (tick, 0, sizeof tick); gcc_obstack_init (&rename_obstack); - first_obj = obstack_alloc (&rename_obstack, 0); + first_obj = XOBNEWVAR (&rename_obstack, char, 0); FOR_EACH_BB (bb) { @@ -217,13 +229,13 @@ regrename_optimize (void) { int new_reg, best_new_reg; int n_uses; - struct du_chain *this = all_chains; + struct du_chain *this_du = all_chains; struct du_chain *tmp, *last; HARD_REG_SET this_unavailable; - int reg = REGNO (*this->loc); + int reg = REGNO (*this_du->loc); int i; - all_chains = this->next_chain; + all_chains = this_du->next_chain; best_new_reg = reg; @@ -251,7 +263,7 @@ regrename_optimize (void) count number of uses, and narrow the set of registers we can use for renaming. */ n_uses = 0; - for (last = this; last->next_use; last = last->next_use) + for (last = this_du; last->next_use; last = last->next_use) { n_uses++; IOR_COMPL_HARD_REG_SET (this_unavailable, @@ -263,23 +275,23 @@ regrename_optimize (void) IOR_COMPL_HARD_REG_SET (this_unavailable, reg_class_contents[last->cl]); - if (this->need_caller_save_reg) + if (this_du->need_caller_save_reg) IOR_HARD_REG_SET (this_unavailable, call_used_reg_set); - merge_overlapping_regs (bb, &this_unavailable, this); + merge_overlapping_regs (bb, &this_unavailable, this_du); /* Now potential_regs is a reasonable approximation, let's have a closer look at each register still in there. */ for (new_reg = 0; new_reg < FIRST_PSEUDO_REGISTER; new_reg++) { - int nregs = hard_regno_nregs[new_reg][GET_MODE (*this->loc)]; + int nregs = hard_regno_nregs[new_reg][GET_MODE (*this_du->loc)]; for (i = nregs - 1; i >= 0; --i) if (TEST_HARD_REG_BIT (this_unavailable, new_reg + i) || fixed_regs[new_reg + i] || global_regs[new_reg + i] /* Can't use regs which aren't saved by the prologue. */ - || (! regs_ever_live[new_reg + i] + || (! df_regs_ever_live_p (new_reg + i) && ! call_used_regs[new_reg + i]) #ifdef LEAF_REGISTERS /* We can't use a non-leaf register if we're in a @@ -297,7 +309,7 @@ regrename_optimize (void) /* See whether it accepts all modes that occur in definition and uses. */ - for (tmp = this; tmp; tmp = tmp->next_use) + for (tmp = this_du; tmp; tmp = tmp->next_use) if (! HARD_REGNO_MODE_OK (new_reg, GET_MODE (*tmp->loc)) || (tmp->need_caller_save_reg && ! (HARD_REGNO_CALL_PART_CLOBBERED @@ -328,12 +340,12 @@ regrename_optimize (void) continue; } - do_replace (this, best_new_reg); - tick[best_new_reg] = ++this_tick; - regs_ever_live[best_new_reg] = 1; - if (dump_file) fprintf (dump_file, ", renamed as %s\n", reg_names[best_new_reg]); + + do_replace (this_du, best_new_reg); + tick[best_new_reg] = ++this_tick; + df_set_regs_ever_live (best_new_reg, true); } obstack_free (&rename_obstack, first_obj); @@ -343,10 +355,6 @@ regrename_optimize (void) if (dump_file) fputc ('\n', dump_file); - - count_or_remove_death_notes (NULL, 1); - update_life_info (NULL, UPDATE_LIFE_LOCAL, - PROP_DEATH_NOTES); } static void @@ -356,11 +364,14 @@ do_replace (struct du_chain *chain, int reg) { unsigned int regno = ORIGINAL_REGNO (*chain->loc); struct reg_attrs * attr = REG_ATTRS (*chain->loc); + int reg_ptr = REG_POINTER (*chain->loc); *chain->loc = gen_raw_REG (GET_MODE (*chain->loc), reg); if (regno >= FIRST_PSEUDO_REGISTER) ORIGINAL_REGNO (*chain->loc) = regno; REG_ATTRS (*chain->loc) = attr; + REG_POINTER (*chain->loc) = reg_ptr; + df_insn_rescan (chain->insn); chain = chain->next_use; } } @@ -383,16 +394,15 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, { if (type == OP_OUT) { - struct du_chain *this - = obstack_alloc (&rename_obstack, sizeof (struct du_chain)); - this->next_use = 0; - this->next_chain = open_chains; - this->loc = loc; - this->insn = insn; - this->cl = cl; - this->need_caller_save_reg = 0; - this->earlyclobber = earlyclobber; - open_chains = this; + struct du_chain *this_du = XOBNEW (&rename_obstack, struct du_chain); + this_du->next_use = 0; + this_du->next_chain = open_chains; + this_du->loc = loc; + this_du->insn = insn; + this_du->cl = cl; + this_du->need_caller_save_reg = 0; + this_du->earlyclobber = earlyclobber; + open_chains = this_du; } return; } @@ -402,7 +412,7 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, for (p = &open_chains; *p;) { - struct du_chain *this = *p; + struct du_chain *this_du = *p; /* Check if the chain has been terminated if it has then skip to the next chain. @@ -411,18 +421,18 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, the chain in Step 3, but are trying to hide in-out operands from terminate_write in Step 5. */ - if (*this->loc == cc0_rtx) - p = &this->next_chain; + if (*this_du->loc == cc0_rtx) + p = &this_du->next_chain; else { - int regno = REGNO (*this->loc); - int nregs = hard_regno_nregs[regno][GET_MODE (*this->loc)]; + int regno = REGNO (*this_du->loc); + int nregs = hard_regno_nregs[regno][GET_MODE (*this_du->loc)]; int exact_match = (regno == this_regno && nregs == this_nregs); if (regno + nregs <= this_regno || this_regno + this_nregs <= regno) { - p = &this->next_chain; + p = &this_du->next_chain; continue; } @@ -436,23 +446,23 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, be replaced with, terminate the chain. */ if (cl != NO_REGS) { - this = obstack_alloc (&rename_obstack, sizeof (struct du_chain)); - this->next_use = 0; - this->next_chain = (*p)->next_chain; - this->loc = loc; - this->insn = insn; - this->cl = cl; - this->need_caller_save_reg = 0; + this_du = XOBNEW (&rename_obstack, struct du_chain); + this_du->next_use = 0; + this_du->next_chain = (*p)->next_chain; + this_du->loc = loc; + this_du->insn = insn; + this_du->cl = cl; + this_du->need_caller_save_reg = 0; while (*p) p = &(*p)->next_use; - *p = this; + *p = this_du; return; } } if (action != terminate_overlapping_read || ! exact_match) { - struct du_chain *next = this->next_chain; + struct du_chain *next = this_du->next_chain; /* Whether the terminated chain can be used for renaming depends on the action and this being an exact match. @@ -461,12 +471,12 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, if ((action == terminate_dead || action == terminate_write) && exact_match) { - this->next_chain = closed_chains; - closed_chains = this; + this_du->next_chain = closed_chains; + closed_chains = this_du; if (dump_file) fprintf (dump_file, "Closing chain %s at insn %d (%s)\n", - reg_names[REGNO (*this->loc)], INSN_UID (insn), + reg_names[REGNO (*this_du->loc)], INSN_UID (insn), scan_actions_name[(int) action]); } else @@ -474,13 +484,13 @@ scan_rtx_reg (rtx insn, rtx *loc, enum reg_class cl, if (dump_file) fprintf (dump_file, "Discarding chain %s at insn %d (%s)\n", - reg_names[REGNO (*this->loc)], INSN_UID (insn), + reg_names[REGNO (*this_du->loc)], INSN_UID (insn), scan_actions_name[(int) action]); } *p = next; } else - p = &this->next_chain; + p = &this_du->next_chain; } } } @@ -557,20 +567,19 @@ scan_rtx_address (rtx insn, rtx *loc, enum reg_class cl, int index_op; unsigned regno0 = REGNO (op0), regno1 = REGNO (op1); - if (REGNO_OK_FOR_INDEX_P (regno0) - && regno_ok_for_base_p (regno1, mode, PLUS, REG)) + if (REGNO_OK_FOR_INDEX_P (regno1) + && regno_ok_for_base_p (regno0, mode, PLUS, REG)) + index_op = 1; + else if (REGNO_OK_FOR_INDEX_P (regno0) + && regno_ok_for_base_p (regno1, mode, PLUS, REG)) index_op = 0; - else if (REGNO_OK_FOR_INDEX_P (regno1) - && regno_ok_for_base_p (regno0, mode, PLUS, REG)) + else if (regno_ok_for_base_p (regno0, mode, PLUS, REG) + || REGNO_OK_FOR_INDEX_P (regno1)) index_op = 1; else if (regno_ok_for_base_p (regno1, mode, PLUS, REG)) index_op = 0; - else if (regno_ok_for_base_p (regno0, mode, PLUS, REG)) - index_op = 1; - else if (REGNO_OK_FOR_INDEX_P (regno1)) - index_op = 1; else - index_op = 0; + index_op = 1; locI = &XEXP (x, index_op); locB = &XEXP (x, !index_op); @@ -651,6 +660,7 @@ scan_rtx (rtx insn, rtx *loc, enum reg_class cl, case CONST: case CONST_INT: case CONST_DOUBLE: + case CONST_FIXED: case CONST_VECTOR: case SYMBOL_REF: case LABEL_REF: @@ -803,16 +813,8 @@ build_def_use (basic_block bb) } for (i = 0; i < recog_data.n_dups; i++) { - int dup_num = recog_data.dup_num[i]; - old_dups[i] = *recog_data.dup_loc[i]; *recog_data.dup_loc[i] = cc0_rtx; - - /* For match_dup of match_operator or match_parallel, share - them, so that we don't miss changes in the dup. */ - if (icode >= 0 - && insn_data[icode].operand[dup_num].eliminable == 0) - old_dups[i] = recog_data.operand[dup_num]; } scan_rtx (insn, &PATTERN (insn), NO_REGS, terminate_all_read, @@ -822,6 +824,8 @@ build_def_use (basic_block bb) *recog_data.dup_loc[i] = old_dups[i]; for (i = 0; i < n_ops; i++) *recog_data.operand_loc[i] = old_operands[i]; + if (recog_data.n_dups) + df_insn_rescan (insn); /* Step 2B: Can't rename function call argument registers. */ if (CALL_P (insn) && CALL_INSN_FUNCTION_USAGE (insn)) @@ -981,15 +985,15 @@ dump_def_use_chain (struct du_chain *chains) { while (chains) { - struct du_chain *this = chains; - int r = REGNO (*this->loc); - int nregs = hard_regno_nregs[r][GET_MODE (*this->loc)]; + struct du_chain *this_du = chains; + int r = REGNO (*this_du->loc); + int nregs = hard_regno_nregs[r][GET_MODE (*this_du->loc)]; fprintf (dump_file, "Register %s (%d):", reg_names[r], nregs); - while (this) + while (this_du) { - fprintf (dump_file, " %d [%s]", INSN_UID (this->insn), - reg_class_names[this->cl]); - this = this->next_use; + fprintf (dump_file, " %d [%s]", INSN_UID (this_du->insn), + reg_class_names[this_du->cl]); + this_du = this_du->next_use; } fprintf (dump_file, "\n"); chains = chains->next_chain; @@ -1026,8 +1030,8 @@ static void kill_value_regno (unsigned, unsigned, struct value_data *); static void kill_value (rtx, struct value_data *); static void set_value_regno (unsigned, enum machine_mode, struct value_data *); static void init_value_data (struct value_data *); -static void kill_clobbered_value (rtx, rtx, void *); -static void kill_set_value (rtx, rtx, void *); +static void kill_clobbered_value (rtx, const_rtx, void *); +static void kill_set_value (rtx, const_rtx, void *); static int kill_autoinc_value (rtx *, void *); static void copy_value (rtx, rtx, struct value_data *); static bool mode_change_ok (enum machine_mode, enum machine_mode, @@ -1167,9 +1171,9 @@ init_value_data (struct value_data *vd) /* Called through note_stores. If X is clobbered, kill its value. */ static void -kill_clobbered_value (rtx x, rtx set, void *data) +kill_clobbered_value (rtx x, const_rtx set, void *data) { - struct value_data *vd = data; + struct value_data *const vd = (struct value_data *) data; if (GET_CODE (set) == CLOBBER) kill_value (x, vd); } @@ -1178,9 +1182,9 @@ kill_clobbered_value (rtx x, rtx set, void *data) current value and install it as the root of its own value list. */ static void -kill_set_value (rtx x, rtx set, void *data) +kill_set_value (rtx x, const_rtx set, void *data) { - struct value_data *vd = data; + struct value_data *const vd = (struct value_data *) data; if (GET_CODE (set) != CLOBBER) { kill_value (x, vd); @@ -1197,7 +1201,7 @@ static int kill_autoinc_value (rtx *px, void *data) { rtx x = *px; - struct value_data *vd = data; + struct value_data *const vd = (struct value_data *) data; if (GET_RTX_CLASS (GET_CODE (x)) == RTX_AUTOINC) { @@ -1319,6 +1323,10 @@ maybe_mode_change (enum machine_mode orig_mode, enum machine_mode copy_mode, enum machine_mode new_mode, unsigned int regno, unsigned int copy_regno ATTRIBUTE_UNUSED) { + if (GET_MODE_SIZE (copy_mode) < GET_MODE_SIZE (orig_mode) + && GET_MODE_SIZE (copy_mode) < GET_MODE_SIZE (new_mode)) + return NULL_RTX; + if (orig_mode == new_mode) return gen_rtx_raw_REG (new_mode, regno); else if (mode_change_ok (orig_mode, new_mode, regno)) @@ -1370,17 +1378,18 @@ find_oldest_value_reg (enum reg_class cl, rtx reg, struct value_data *vd) for (i = vd->e[regno].oldest_regno; i != regno; i = vd->e[i].next_regno) { enum machine_mode oldmode = vd->e[i].mode; - rtx new; + rtx new_rtx; if (!in_hard_reg_set_p (reg_class_contents[cl], mode, i)) return NULL_RTX; - new = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i, regno); - if (new) + new_rtx = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i, regno); + if (new_rtx) { - ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg); - REG_ATTRS (new) = REG_ATTRS (reg); - return new; + ORIGINAL_REGNO (new_rtx) = ORIGINAL_REGNO (reg); + REG_ATTRS (new_rtx) = REG_ATTRS (reg); + REG_POINTER (new_rtx) = REG_POINTER (reg); + return new_rtx; } } @@ -1394,14 +1403,14 @@ static bool replace_oldest_value_reg (rtx *loc, enum reg_class cl, rtx insn, struct value_data *vd) { - rtx new = find_oldest_value_reg (cl, *loc, vd); - if (new) + rtx new_rtx = find_oldest_value_reg (cl, *loc, vd); + if (new_rtx) { if (dump_file) fprintf (dump_file, "insn %u: replaced reg %u with %u\n", - INSN_UID (insn), REGNO (*loc), REGNO (new)); + INSN_UID (insn), REGNO (*loc), REGNO (new_rtx)); - validate_change (insn, loc, new, 1); + validate_change (insn, loc, new_rtx, 1); return true; } return false; @@ -1479,20 +1488,19 @@ replace_oldest_value_addr (rtx *loc, enum reg_class cl, int index_op; unsigned regno0 = REGNO (op0), regno1 = REGNO (op1); - if (REGNO_OK_FOR_INDEX_P (regno0) - && regno_ok_for_base_p (regno1, mode, PLUS, REG)) + if (REGNO_OK_FOR_INDEX_P (regno1) + && regno_ok_for_base_p (regno0, mode, PLUS, REG)) + index_op = 1; + else if (REGNO_OK_FOR_INDEX_P (regno0) + && regno_ok_for_base_p (regno1, mode, PLUS, REG)) index_op = 0; - else if (REGNO_OK_FOR_INDEX_P (regno1) - && regno_ok_for_base_p (regno0, mode, PLUS, REG)) + else if (regno_ok_for_base_p (regno0, mode, PLUS, REG) + || REGNO_OK_FOR_INDEX_P (regno1)) index_op = 1; else if (regno_ok_for_base_p (regno1, mode, PLUS, REG)) index_op = 0; - else if (regno_ok_for_base_p (regno0, mode, PLUS, REG)) - index_op = 1; - else if (REGNO_OK_FOR_INDEX_P (regno1)) - index_op = 1; else - index_op = 0; + index_op = 1; locI = &XEXP (x, index_op); locB = &XEXP (x, !index_op); @@ -1640,7 +1648,7 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) unsigned int regno = REGNO (src); enum machine_mode mode = GET_MODE (src); unsigned int i; - rtx new; + rtx new_rtx; /* If we are accessing SRC in some mode other that what we set it in, make sure that the replacement is valid. */ @@ -1655,13 +1663,13 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) register in the same class. */ if (REG_P (SET_DEST (set))) { - new = find_oldest_value_reg (REGNO_REG_CLASS (regno), src, vd); - if (new && validate_change (insn, &SET_SRC (set), new, 0)) + new_rtx = find_oldest_value_reg (REGNO_REG_CLASS (regno), src, vd); + if (new_rtx && validate_change (insn, &SET_SRC (set), new_rtx, 0)) { if (dump_file) fprintf (dump_file, "insn %u: replaced reg %u with %u\n", - INSN_UID (insn), regno, REGNO (new)); + INSN_UID (insn), regno, REGNO (new_rtx)); changed = true; goto did_replacement; } @@ -1671,18 +1679,19 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) for (i = vd->e[regno].oldest_regno; i != regno; i = vd->e[i].next_regno) { - new = maybe_mode_change (vd->e[i].mode, vd->e[regno].mode, + new_rtx = maybe_mode_change (vd->e[i].mode, vd->e[regno].mode, mode, i, regno); - if (new != NULL_RTX) + if (new_rtx != NULL_RTX) { - if (validate_change (insn, &SET_SRC (set), new, 0)) + if (validate_change (insn, &SET_SRC (set), new_rtx, 0)) { - ORIGINAL_REGNO (new) = ORIGINAL_REGNO (src); - REG_ATTRS (new) = REG_ATTRS (src); + ORIGINAL_REGNO (new_rtx) = ORIGINAL_REGNO (src); + REG_ATTRS (new_rtx) = REG_ATTRS (src); + REG_POINTER (new_rtx) = REG_POINTER (src); if (dump_file) fprintf (dump_file, "insn %u: replaced reg %u with %u\n", - INSN_UID (insn), regno, REGNO (new)); + INSN_UID (insn), regno, REGNO (new_rtx)); changed = true; goto did_replacement; } @@ -1735,13 +1744,13 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd) if (replaced[i]) { int j; - rtx new; + rtx new_rtx; - new = *recog_data.operand_loc[i]; - recog_data.operand[i] = new; + new_rtx = *recog_data.operand_loc[i]; + recog_data.operand[i] = new_rtx; for (j = 0; j < recog_data.n_dups; j++) if (recog_data.dup_num[j] == i) - validate_change (insn, recog_data.dup_loc[j], new, 1); + validate_unshare_change (insn, recog_data.dup_loc[j], new_rtx, 1); any_replacements = true; } @@ -1794,12 +1803,9 @@ static void copyprop_hardreg_forward (void) { struct value_data *all_vd; - bool need_refresh; basic_block bb; sbitmap visited; - need_refresh = false; - all_vd = XNEWVEC (struct value_data, last_basic_block); visited = sbitmap_alloc (last_basic_block); @@ -1820,27 +1826,10 @@ copyprop_hardreg_forward (void) else init_value_data (all_vd + bb->index); - if (copyprop_hardreg_forward_1 (bb, all_vd + bb->index)) - need_refresh = true; + copyprop_hardreg_forward_1 (bb, all_vd + bb->index); } sbitmap_free (visited); - - if (need_refresh) - { - if (dump_file) - fputs ("\n\n", dump_file); - - /* ??? Irritatingly, delete_noop_moves does not take a set of blocks - to scan, so we have to do a life update with no initial set of - blocks Just In Case. */ - delete_noop_moves (); - update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES, - PROP_DEATH_NOTES - | PROP_SCAN_DEAD_CODE - | PROP_KILL_DEAD_CODE); - } - free (all_vd); } @@ -1951,7 +1940,7 @@ validate_value_data (struct value_data *vd) static bool gate_handle_regrename (void) { - return (optimize > 0 && (flag_rename_registers || flag_cprop_registers)); + return (optimize > 0 && (flag_rename_registers)); } @@ -1959,15 +1948,14 @@ gate_handle_regrename (void) static unsigned int rest_of_handle_regrename (void) { - if (flag_rename_registers) - regrename_optimize (); - if (flag_cprop_registers) - copyprop_hardreg_forward (); + regrename_optimize (); return 0; } -struct tree_opt_pass pass_regrename = +struct rtl_opt_pass pass_regrename = { + { + RTL_PASS, "rnreg", /* name */ gate_handle_regrename, /* gate */ rest_of_handle_regrename, /* execute */ @@ -1979,7 +1967,41 @@ struct tree_opt_pass pass_regrename = 0, /* properties_provided */ 0, /* properties_destroyed */ 0, /* todo_flags_start */ - TODO_dump_func, /* todo_flags_finish */ - 'n' /* letter */ + TODO_df_finish | TODO_verify_rtl_sharing | + TODO_dump_func /* todo_flags_finish */ + } }; +static bool +gate_handle_cprop (void) +{ + return (optimize > 0 && (flag_cprop_registers)); +} + + +/* Run the regrename and cprop passes. */ +static unsigned int +rest_of_handle_cprop (void) +{ + copyprop_hardreg_forward (); + return 0; +} + +struct rtl_opt_pass pass_cprop_hardreg = +{ + { + RTL_PASS, + "cprop_hardreg", /* name */ + gate_handle_cprop, /* gate */ + rest_of_handle_cprop, /* execute */ + NULL, /* sub */ + NULL, /* next */ + 0, /* static_pass_number */ + TV_RENAME_REGISTERS, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + TODO_dump_func | TODO_verify_rtl_sharing /* todo_flags_finish */ + } +};