/* memory.c -- OpenRISC Custom Unit Compiler, memory optimization and scheduling
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/* memory.c -- OpenRISC Custom Unit Compiler, memory optimization and scheduling
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* Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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* Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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*
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*
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* This file is part of OpenRISC 1000 Architectural Simulator.
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* This file is part of OpenRISC 1000 Architectural Simulator.
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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|
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <assert.h>
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#include "config.h"
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#include "config.h"
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#include "port.h"
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#include "port.h"
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#include "arch.h"
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#include "arch.h"
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#include "abstract.h"
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#include "abstract.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "cuc.h"
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#include "cuc.h"
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#include "insn.h"
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#include "insn.h"
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/* Cleans memory & data dependencies */
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/* Cleans memory & data dependencies */
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void clean_deps (cuc_func *f)
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void clean_deps (cuc_func *f)
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{
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{
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int b, i;
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int b, i;
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dep_list *t;
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dep_list *t;
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for (b = 0; b < f->num_bb; b++) {
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for (b = 0; b < f->num_bb; b++) {
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for (i = 0; i < f->bb[b].ninsn; i++) {
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for (i = 0; i < f->bb[b].ninsn; i++) {
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t = f->bb[b].insn[i].dep;
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t = f->bb[b].insn[i].dep;
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while (t) {
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while (t) {
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dep_list *tmp = t;
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dep_list *tmp = t;
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t = t->next;
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t = t->next;
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free (tmp);
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free (tmp);
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}
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}
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f->bb[b].insn[i].dep = NULL;
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f->bb[b].insn[i].dep = NULL;
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}
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}
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t = f->bb[b].mdep;
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t = f->bb[b].mdep;
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while (t) {
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while (t) {
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dep_list *tmp = t;
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dep_list *tmp = t;
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t = t->next;
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t = t->next;
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free (tmp);
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free (tmp);
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}
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}
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f->bb[b].mdep = NULL;
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f->bb[b].mdep = NULL;
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}
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}
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f->nmsched = 0;
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f->nmsched = 0;
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}
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}
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/* Checks for memory conflicts between two instructions; returns 1 if detected
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/* Checks for memory conflicts between two instructions; returns 1 if detected
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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static int check_memory_conflict (cuc_func *f, cuc_insn *a, cuc_insn *b, int otype)
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static int check_memory_conflict (cuc_func *f, cuc_insn *a, cuc_insn *b, int otype)
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{
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{
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switch (otype) {
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switch (otype) {
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case MO_EXACT: /* exact */
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case MO_EXACT: /* exact */
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case MO_STRONG: /* strong */
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case MO_STRONG: /* strong */
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return 1;
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return 1;
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case MO_WEAK: /* weak */
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case MO_WEAK: /* weak */
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assert (a->type & IT_MEMORY);
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assert (a->type & IT_MEMORY);
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assert (b->type & IT_MEMORY);
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assert (b->type & IT_MEMORY);
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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int aw, bw;
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int aw, bw;
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assert ((aw = II_MEM_WIDTH (a->index)) >= 0);
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assert ((aw = II_MEM_WIDTH (a->index)) >= 0);
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assert ((bw = II_MEM_WIDTH (b->index)) >= 0);
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assert ((bw = II_MEM_WIDTH (b->index)) >= 0);
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a = &f->INSN(a->op[1]);
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a = &f->INSN(a->op[1]);
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b = &f->INSN(b->op[1]);
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b = &f->INSN(b->op[1]);
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) return 1;
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) return 1;
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/* Check if they overlap */
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/* Check if they overlap */
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if (a->op[2] >= b->op[2] && a->op[2] < b->op[2] + bw) return 1;
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if (a->op[2] >= b->op[2] && a->op[2] < b->op[2] + bw) return 1;
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if (b->op[2] >= a->op[2] && b->op[2] < a->op[2] + aw) return 1;
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if (b->op[2] >= a->op[2] && b->op[2] < a->op[2] + aw) return 1;
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return 0;
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return 0;
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} else return 1;
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} else return 1;
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case MO_NONE: /* none */
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case MO_NONE: /* none */
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return 0;
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return 0;
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default:
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default:
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assert (0);
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assert (0);
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}
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}
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return 1;
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return 1;
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}
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}
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/* Adds memory dependencies based on ordering type:
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/* Adds memory dependencies based on ordering type:
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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0 - exact; 1 - strong; 2 - weak; 3 - none */
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void add_memory_dep (cuc_func *f, int otype)
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void add_memory_dep (cuc_func *f, int otype)
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{
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{
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int b, i;
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int b, i;
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dep_list *all_mem = NULL;
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dep_list *all_mem = NULL;
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for (b = 0; b < f->num_bb; b++) {
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for (b = 0; b < f->num_bb; b++) {
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cuc_insn *insn = f->bb[b].insn;
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cuc_insn *insn = f->bb[b].insn;
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for (i = 0; i < f->bb[b].ninsn; i++)
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for (i = 0; i < f->bb[b].ninsn; i++)
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if (insn[i].type & IT_MEMORY) {
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if (insn[i].type & IT_MEMORY) {
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dep_list *tmp = all_mem;
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dep_list *tmp = all_mem;
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while (tmp) {
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while (tmp) {
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//PRINTF ("%x %x\n", REF (b,i), tmp->ref);
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//PRINTF ("%x %x\n", REF (b,i), tmp->ref);
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if (check_memory_conflict (f, &insn[i], &f->INSN(tmp->ref), otype))
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if (check_memory_conflict (f, &insn[i], &f->INSN(tmp->ref), otype))
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add_dep (&insn[i].dep, tmp->ref);
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add_dep (&insn[i].dep, tmp->ref);
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tmp = tmp->next;
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tmp = tmp->next;
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}
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}
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add_dep (&all_mem, REF (b, i));
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add_dep (&all_mem, REF (b, i));
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}
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}
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}
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}
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dispose_list (&all_mem);
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dispose_list (&all_mem);
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}
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}
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/* Check if they address the same location, so we can join them */
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/* Check if they address the same location, so we can join them */
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static int same_transfers (cuc_func *f, int otype)
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static int same_transfers (cuc_func *f, int otype)
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{
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{
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int i, j;
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int i, j;
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int modified = 0;
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int modified = 0;
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if (otype == MO_WEAK || otype == MO_NONE) {
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if (otype == MO_WEAK || otype == MO_NONE) {
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for (i = 1, j = 1; i < f->nmsched; i++)
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for (i = 1, j = 1; i < f->nmsched; i++)
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/* Exclude memory stores and different memory types */
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/* Exclude memory stores and different memory types */
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if (f->mtype[i - 1] == f->mtype[i] && f->mtype[i] & MT_LOAD) {
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if (f->mtype[i - 1] == f->mtype[i] && f->mtype[i] & MT_LOAD) {
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cuc_insn *a = &f->INSN(f->msched[i - 1]);
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cuc_insn *a = &f->INSN(f->msched[i - 1]);
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cuc_insn *b = &f->INSN(f->msched[i]);
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cuc_insn *b = &f->INSN(f->msched[i]);
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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a = &f->INSN(a->op[1]);
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a = &f->INSN(a->op[1]);
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b = &f->INSN(b->op[1]);
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b = &f->INSN(b->op[1]);
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/* Not in usual form? */
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/* Not in usual form? */
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) goto keep;
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) goto keep;
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//PRINTF ("%i %i, ", a->op[2], b->op[2]);
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//PRINTF ("%i %i, ", a->op[2], b->op[2]);
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/* Check if they are the same => do not copy */
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/* Check if they are the same => do not copy */
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if (a->op[2] == b->op[2]
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if (a->op[2] == b->op[2]
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&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
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&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
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/* yes => remove actual instruction */
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/* yes => remove actual instruction */
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int t1 = MIN (f->msched[i - 1], f->msched[i]);
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int t1 = MIN (f->msched[i - 1], f->msched[i]);
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int t2 = MAX (f->msched[i - 1], f->msched[i]);
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int t2 = MAX (f->msched[i - 1], f->msched[i]);
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int b, i, j;
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int b, i, j;
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cucdebug (2, "Removing %x_%x and using %x_%x instead.\n",
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cucdebug (2, "Removing %x_%x and using %x_%x instead.\n",
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REF_BB(t2), REF_I(t2), REF_BB(t1), REF_I(t1));
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REF_BB(t2), REF_I(t2), REF_BB(t1), REF_I(t1));
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change_insn_type (&f->INSN(t2), II_NOP);
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change_insn_type (&f->INSN(t2), II_NOP);
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modified = 1;
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modified = 1;
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/* Update references */
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/* Update references */
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for (b = 0; b < f->num_bb; b++)
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for (b = 0; b < f->num_bb; b++)
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for (i = 0; i < f->bb[b].ninsn; i++)
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for (i = 0; i < f->bb[b].ninsn; i++)
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for (j = 0; j < MAX_OPERANDS; j++)
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for (j = 0; j < MAX_OPERANDS; j++)
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if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t2)
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if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t2)
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f->bb[b].insn[i].op[j] = t1;
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f->bb[b].insn[i].op[j] = t1;
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|
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} else goto keep;
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} else goto keep;
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} else goto keep;
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} else goto keep;
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} else {
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} else {
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keep:
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keep:
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f->msched[j] = f->msched[i];
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f->msched[j] = f->msched[i];
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f->mtype[j++] = f->mtype[i];
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f->mtype[j++] = f->mtype[i];
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}
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}
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f->nmsched = j;
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f->nmsched = j;
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}
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}
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return modified;
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return modified;
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}
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}
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|
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/* Check if two consecutive lb[zs] can be joined into lhz and if
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/* Check if two consecutive lb[zs] can be joined into lhz and if
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two consecutive lh[zs] can be joined into lwz */
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two consecutive lh[zs] can be joined into lwz */
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static int join_transfers (cuc_func *f, int otype)
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static int join_transfers (cuc_func *f, int otype)
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{
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{
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int i, j;
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int i, j;
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int modified = 0;
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int modified = 0;
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|
|
/* We can change width even with strong memory ordering */
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/* We can change width even with strong memory ordering */
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if (otype == MO_WEAK || otype == MO_NONE || otype == MO_STRONG) {
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if (otype == MO_WEAK || otype == MO_NONE || otype == MO_STRONG) {
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for (i = 1, j = 1; i < f->nmsched; i++)
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for (i = 1, j = 1; i < f->nmsched; i++)
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/* Exclude memory stores and different memory types */
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/* Exclude memory stores and different memory types */
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if (f->mtype[i - 1] == f->mtype[i] && f->mtype[i] & MT_LOAD) {
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if (f->mtype[i - 1] == f->mtype[i] && f->mtype[i] & MT_LOAD) {
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cuc_insn *a = &f->INSN(f->msched[i - 1]);
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cuc_insn *a = &f->INSN(f->msched[i - 1]);
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cuc_insn *b = &f->INSN(f->msched[i]);
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cuc_insn *b = &f->INSN(f->msched[i]);
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int aw = f->mtype[i - 1] & MT_WIDTH;
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int aw = f->mtype[i - 1] & MT_WIDTH;
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
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a = &f->INSN(a->op[1]);
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a = &f->INSN(a->op[1]);
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b = &f->INSN(b->op[1]);
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b = &f->INSN(b->op[1]);
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|
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/* Not in usual form? */
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/* Not in usual form? */
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) goto keep;
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|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) goto keep;
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|
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/* Check if they touch together */
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/* Check if they touch together */
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if (a->op[2] + aw == b->op[2]
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if (a->op[2] + aw == b->op[2]
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&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
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&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
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/* yes => remove second instruction */
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/* yes => remove second instruction */
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int t1 = MIN (f->msched[i - 1], f->msched[i]);
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int t1 = MIN (f->msched[i - 1], f->msched[i]);
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int t2 = MAX (f->msched[i - 1], f->msched[i]);
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int t2 = MAX (f->msched[i - 1], f->msched[i]);
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dep_list *t1dep = f->INSN(t1).dep;
|
dep_list *t1dep = f->INSN(t1).dep;
|
int x, p;
|
int x, p;
|
cuc_insn *ii;
|
cuc_insn *ii;
|
|
|
cucdebug (2, "Joining %x and %x.\n", t1, t2);
|
cucdebug (2, "Joining %x and %x.\n", t1, t2);
|
if (cuc_debug >= 8) print_cuc_bb (f, "PREJT");
|
if (cuc_debug >= 8) print_cuc_bb (f, "PREJT");
|
change_insn_type (&f->INSN(t1), II_NOP);
|
change_insn_type (&f->INSN(t1), II_NOP);
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change_insn_type (&f->INSN(t2), II_NOP);
|
change_insn_type (&f->INSN(t2), II_NOP);
|
/* We will reuse the memadd before the first load, and add some
|
/* We will reuse the memadd before the first load, and add some
|
custom code at the end */
|
custom code at the end */
|
insert_insns (f, t1, 10);
|
insert_insns (f, t1, 10);
|
if (cuc_debug > 8) print_cuc_bb (f, "PREJT2");
|
if (cuc_debug > 8) print_cuc_bb (f, "PREJT2");
|
|
|
/* Remove all dependencies to second access */
|
/* Remove all dependencies to second access */
|
for (x = 0; x < f->num_bb; x++) {
|
for (x = 0; x < f->num_bb; x++) {
|
int i;
|
int i;
|
for (i = 0; i < f->bb[x].ninsn; i++) {
|
for (i = 0; i < f->bb[x].ninsn; i++) {
|
dep_list *d = f->bb[x].insn[i].dep;
|
dep_list *d = f->bb[x].insn[i].dep;
|
dep_list **old = &f->bb[x].insn[i].dep;
|
dep_list **old = &f->bb[x].insn[i].dep;
|
while (d) {
|
while (d) {
|
if (d->ref == t2) {
|
if (d->ref == t2) {
|
d = d->next;
|
d = d->next;
|
*old = d;
|
*old = d;
|
} else {
|
} else {
|
d = d->next;
|
d = d->next;
|
old = &((*old)->next);
|
old = &((*old)->next);
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Build the folowing code:
|
/* Build the folowing code:
|
l[hw]z p-1
|
l[hw]z p-1
|
and p-1, 0xff
|
and p-1, 0xff
|
sfle p-1, 0x7f
|
sfle p-1, 0x7f
|
or p-2, 0xffffff00
|
or p-2, 0xffffff00
|
cmov p-3, p-1, p-2
|
cmov p-3, p-1, p-2
|
shr p-5, 8
|
shr p-5, 8
|
and p-1, 0xff
|
and p-1, 0xff
|
sfle p-1 0x7f
|
sfle p-1 0x7f
|
or p-2 0xffffff00
|
or p-2 0xffffff00
|
cmov p-3, p-1, p-2*/
|
cmov p-3, p-1, p-2*/
|
p = REF_I(t1);
|
p = REF_I(t1);
|
cucdebug (8, "%x %x\n", f->mtype[i - 1], f->mtype[i]);
|
cucdebug (8, "%x %x\n", f->mtype[i - 1], f->mtype[i]);
|
for (x = 0; x < 2; x++) {
|
for (x = 0; x < 2; x++) {
|
int t = f->mtype[i - 1 + x];
|
int t = f->mtype[i - 1 + x];
|
ii = &f->bb[REF_BB(t1)].insn[p];
|
ii = &f->bb[REF_BB(t1)].insn[p];
|
if (!x) {
|
if (!x) {
|
change_insn_type (ii, aw == 1 ? II_LH : II_LW);
|
change_insn_type (ii, aw == 1 ? II_LH : II_LW);
|
ii->type = IT_MEMORY | IT_VOLATILE;
|
ii->type = IT_MEMORY | IT_VOLATILE;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = t1 - 1; ii->opt[1] = OPT_REF;
|
ii->op[1] = t1 - 1; ii->opt[1] = OPT_REF;
|
ii->opt[2] = ii->opt[3] = OPT_NONE;
|
ii->opt[2] = ii->opt[3] = OPT_NONE;
|
ii->dep = t1dep;
|
ii->dep = t1dep;
|
f->mtype[i - 1] = MT_LOAD | (aw == 1 ? 2 : 4);
|
f->mtype[i - 1] = MT_LOAD | (aw == 1 ? 2 : 4);
|
f->msched[i - 1] = REF (REF_BB(t1), p);
|
f->msched[i - 1] = REF (REF_BB(t1), p);
|
} else {
|
} else {
|
change_insn_type (ii, II_SRL);
|
change_insn_type (ii, II_SRL);
|
ii->type = 0;
|
ii->type = 0;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = t1; ii->opt[1] = OPT_REF;
|
ii->op[1] = t1; ii->opt[1] = OPT_REF;
|
ii->op[2] = 8; ii->opt[2] = OPT_CONST;
|
ii->op[2] = 8; ii->opt[2] = OPT_CONST;
|
ii->opt[3] = OPT_NONE;
|
ii->opt[3] = OPT_NONE;
|
}
|
}
|
|
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
change_insn_type (ii, II_AND);
|
change_insn_type (ii, II_AND);
|
ii->type = 0;
|
ii->type = 0;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[2] = 0xff; ii->opt[2] = OPT_CONST;
|
ii->op[2] = 0xff; ii->opt[2] = OPT_CONST;
|
ii->opt[3] = OPT_NONE;
|
ii->opt[3] = OPT_NONE;
|
|
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
change_insn_type (ii, II_SFLE);
|
change_insn_type (ii, II_SFLE);
|
ii->type = IT_COND;
|
ii->type = IT_COND;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[2] = 0x7f; ii->opt[2] = OPT_CONST;
|
ii->op[2] = 0x7f; ii->opt[2] = OPT_CONST;
|
ii->opt[3] = OPT_NONE;
|
ii->opt[3] = OPT_NONE;
|
|
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
change_insn_type (ii, II_OR);
|
change_insn_type (ii, II_OR);
|
ii->type = 0;
|
ii->type = 0;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = REF (REF_BB(t1), p - 2); ii->opt[1] = OPT_REF;
|
ii->op[1] = REF (REF_BB(t1), p - 2); ii->opt[1] = OPT_REF;
|
if (t & MT_SIGNED) ii->op[2] = 0xffffff00;
|
if (t & MT_SIGNED) ii->op[2] = 0xffffff00;
|
else ii->op[2] = 0;
|
else ii->op[2] = 0;
|
ii->opt[2] = OPT_CONST;
|
ii->opt[2] = OPT_CONST;
|
ii->opt[3] = OPT_NONE;
|
ii->opt[3] = OPT_NONE;
|
|
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
ii = &f->bb[REF_BB(t1)].insn[++p];
|
change_insn_type (ii, II_CMOV);
|
change_insn_type (ii, II_CMOV);
|
ii->type = 0;
|
ii->type = 0;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[0] = -1; ii->opt[0] = OPT_REGISTER | OPT_DEST;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[1] = REF (REF_BB(t1), p - 1); ii->opt[1] = OPT_REF;
|
ii->op[2] = REF (REF_BB(t1), p - 3); ii->opt[2] = OPT_REF;
|
ii->op[2] = REF (REF_BB(t1), p - 3); ii->opt[2] = OPT_REF;
|
ii->op[3] = REF (REF_BB(t1), p - 2); ii->opt[3] = OPT_REF;
|
ii->op[3] = REF (REF_BB(t1), p - 2); ii->opt[3] = OPT_REF;
|
p++;
|
p++;
|
}
|
}
|
|
|
modified = 1;
|
modified = 1;
|
|
|
{
|
{
|
int b, i, j;
|
int b, i, j;
|
/* Update references */
|
/* Update references */
|
for (b = 0; b < f->num_bb; b++)
|
for (b = 0; b < f->num_bb; b++)
|
for (i = 0; i < f->bb[b].ninsn; i++)
|
for (i = 0; i < f->bb[b].ninsn; i++)
|
for (j = 0; j < MAX_OPERANDS; j++)
|
for (j = 0; j < MAX_OPERANDS; j++)
|
if (REF_I (f->bb[b].insn[i].op[j]) < REF_I (t1)
|
if (REF_I (f->bb[b].insn[i].op[j]) < REF_I (t1)
|
|| REF_I(f->bb[b].insn[i].op[j]) >= REF_I (t1) + 10) {
|
|| REF_I(f->bb[b].insn[i].op[j]) >= REF_I (t1) + 10) {
|
if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t1)
|
if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t1)
|
f->bb[b].insn[i].op[j] = t1 + 4;
|
f->bb[b].insn[i].op[j] = t1 + 4;
|
else if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t2)
|
else if (f->bb[b].insn[i].opt[j] & OPT_REF && f->bb[b].insn[i].op[j] == t2)
|
f->bb[b].insn[i].op[j] = t1 + 9;
|
f->bb[b].insn[i].op[j] = t1 + 9;
|
}
|
}
|
}
|
}
|
if (cuc_debug >= 8) print_cuc_bb (f, "POSTJT");
|
if (cuc_debug >= 8) print_cuc_bb (f, "POSTJT");
|
} else goto keep;
|
} else goto keep;
|
} else goto keep;
|
} else goto keep;
|
} else {
|
} else {
|
keep:
|
keep:
|
f->msched[j] = f->msched[i];
|
f->msched[j] = f->msched[i];
|
f->mtype[j++] = f->mtype[i];
|
f->mtype[j++] = f->mtype[i];
|
}
|
}
|
f->nmsched = j;
|
f->nmsched = j;
|
}
|
}
|
return modified;
|
return modified;
|
}
|
}
|
|
|
/* returns nonzero if a < b */
|
/* returns nonzero if a < b */
|
int mem_ordering_cmp (cuc_func *f, cuc_insn *a, cuc_insn *b)
|
int mem_ordering_cmp (cuc_func *f, cuc_insn *a, cuc_insn *b)
|
{
|
{
|
assert (a->type & IT_MEMORY);
|
assert (a->type & IT_MEMORY);
|
assert (b->type & IT_MEMORY);
|
assert (b->type & IT_MEMORY);
|
if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
|
if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
|
&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
|
&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
|
a = &f->INSN(a->op[1]);
|
a = &f->INSN(a->op[1]);
|
b = &f->INSN(b->op[1]);
|
b = &f->INSN(b->op[1]);
|
if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
|
if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
|
|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) return 0;
|
|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) return 0;
|
|
|
/* Order linearly, we can then join them to bursts */
|
/* Order linearly, we can then join them to bursts */
|
return a->op[2] < b->op[2];
|
return a->op[2] < b->op[2];
|
} else return 0;
|
} else return 0;
|
}
|
}
|
|
|
/* Schedule memory accesses
|
/* Schedule memory accesses
|
0 - exact; 1 - strong; 2 - weak; 3 - none */
|
0 - exact; 1 - strong; 2 - weak; 3 - none */
|
int schedule_memory (cuc_func *f, int otype)
|
int schedule_memory (cuc_func *f, int otype)
|
{
|
{
|
int b, i, j;
|
int b, i, j;
|
int modified = 0;
|
int modified = 0;
|
f->nmsched = 0;
|
f->nmsched = 0;
|
|
|
for (b = 0; b < f->num_bb; b++) {
|
for (b = 0; b < f->num_bb; b++) {
|
cuc_insn *insn = f->bb[b].insn;
|
cuc_insn *insn = f->bb[b].insn;
|
for (i = 0; i < f->bb[b].ninsn; i++)
|
for (i = 0; i < f->bb[b].ninsn; i++)
|
if (insn[i].type & IT_MEMORY) {
|
if (insn[i].type & IT_MEMORY) {
|
f->msched[f->nmsched++] = REF (b, i);
|
f->msched[f->nmsched++] = REF (b, i);
|
if (otype == MO_NONE || otype == MO_WEAK) insn[i].type |= IT_FLAG1; /* mark unscheduled */
|
if (otype == MO_NONE || otype == MO_WEAK) insn[i].type |= IT_FLAG1; /* mark unscheduled */
|
}
|
}
|
}
|
}
|
|
|
for (i = 0; i < f->nmsched; i++)
|
for (i = 0; i < f->nmsched; i++)
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "\n");
|
cucdebug (2, "\n");
|
|
|
/* We can reorder just more loose types
|
/* We can reorder just more loose types
|
We assume, that memory accesses are currently in valid (but not neccesserly)
|
We assume, that memory accesses are currently in valid (but not neccesserly)
|
optimal order */
|
optimal order */
|
if (otype == MO_WEAK || otype == MO_NONE) {
|
if (otype == MO_WEAK || otype == MO_NONE) {
|
for (i = 0; i < f->nmsched; i++) {
|
for (i = 0; i < f->nmsched; i++) {
|
int best = i;
|
int best = i;
|
int tmp;
|
int tmp;
|
for (j = i + 1; j < f->nmsched; j++) if (REF_BB(f->msched[j]) == REF_BB(f->msched[best])) {
|
for (j = i + 1; j < f->nmsched; j++) if (REF_BB(f->msched[j]) == REF_BB(f->msched[best])) {
|
if (mem_ordering_cmp (f, &f->INSN (f->msched[j]), &f->INSN(f->msched[best]))) {
|
if (mem_ordering_cmp (f, &f->INSN (f->msched[j]), &f->INSN(f->msched[best]))) {
|
/* Check dependencies */
|
/* Check dependencies */
|
dep_list *t = f->INSN(f->msched[j]).dep;
|
dep_list *t = f->INSN(f->msched[j]).dep;
|
while (t) {
|
while (t) {
|
if (f->INSN(t->ref).type & IT_FLAG1) break;
|
if (f->INSN(t->ref).type & IT_FLAG1) break;
|
t = t->next;
|
t = t->next;
|
}
|
}
|
if (!t) best = j; /* no conflicts -> ok */
|
if (!t) best = j; /* no conflicts -> ok */
|
}
|
}
|
}
|
}
|
|
|
/* we have to shift instructions up, to maintain valid dependencies
|
/* we have to shift instructions up, to maintain valid dependencies
|
and make space for best candidate */
|
and make space for best candidate */
|
|
|
/* make local copy */
|
/* make local copy */
|
tmp = f->msched[best];
|
tmp = f->msched[best];
|
for (j = best; j > i; j--) f->msched[j] = f->msched[j - 1];
|
for (j = best; j > i; j--) f->msched[j] = f->msched[j - 1];
|
f->msched[i] = tmp;
|
f->msched[i] = tmp;
|
f->INSN(f->msched[i]).type &= ~IT_FLAG1; /* mark scheduled */
|
f->INSN(f->msched[i]).type &= ~IT_FLAG1; /* mark scheduled */
|
}
|
}
|
}
|
}
|
|
|
for (i = 0; i < f->nmsched; i++)
|
for (i = 0; i < f->nmsched; i++)
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "\n");
|
cucdebug (2, "\n");
|
|
|
/* Assign memory types */
|
/* Assign memory types */
|
for (i = 0; i < f->nmsched; i++) {
|
for (i = 0; i < f->nmsched; i++) {
|
cuc_insn *a = &f->INSN(f->msched[i]);
|
cuc_insn *a = &f->INSN(f->msched[i]);
|
f->mtype[i] = !II_IS_LOAD(a->index) ? MT_STORE : MT_LOAD;
|
f->mtype[i] = !II_IS_LOAD(a->index) ? MT_STORE : MT_LOAD;
|
f->mtype[i] |= II_MEM_WIDTH (a->index);
|
f->mtype[i] |= II_MEM_WIDTH (a->index);
|
if (a->type & IT_SIGNED) f->mtype[i] |= MT_SIGNED;
|
if (a->type & IT_SIGNED) f->mtype[i] |= MT_SIGNED;
|
}
|
}
|
|
|
if (same_transfers (f, otype)) modified = 1;
|
if (same_transfers (f, otype)) modified = 1;
|
if (join_transfers (f, otype)) modified = 1;
|
if (join_transfers (f, otype)) modified = 1;
|
|
|
for (i = 0; i < f->nmsched; i++)
|
for (i = 0; i < f->nmsched; i++)
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "\n");
|
cucdebug (2, "\n");
|
if (cuc_debug > 5) print_cuc_bb (f, "AFTER_MEM_REMOVAL");
|
if (cuc_debug > 5) print_cuc_bb (f, "AFTER_MEM_REMOVAL");
|
|
|
if (config.cuc.enable_bursts) {
|
if (config.cuc.enable_bursts) {
|
//PRINTF ("\n");
|
//PRINTF ("\n");
|
for (i = 1; i < f->nmsched; i++) {
|
for (i = 1; i < f->nmsched; i++) {
|
cuc_insn *a = &f->INSN(f->msched[i - 1]);
|
cuc_insn *a = &f->INSN(f->msched[i - 1]);
|
cuc_insn *b = &f->INSN(f->msched[i]);
|
cuc_insn *b = &f->INSN(f->msched[i]);
|
int aw = f->mtype[i - 1] & MT_WIDTH;
|
int aw = f->mtype[i - 1] & MT_WIDTH;
|
|
|
/* Burst can only be out of words */
|
/* Burst can only be out of words */
|
if (aw != 4) continue;
|
if (aw != 4) continue;
|
|
|
if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
|
if ((a->opt[1] & OPT_REF) && f->INSN(a->op[1]).index == II_ADD
|
&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
|
&&(b->opt[1] & OPT_REF) && f->INSN(b->op[1]).index == II_ADD) {
|
a = &f->INSN(a->op[1]);
|
a = &f->INSN(a->op[1]);
|
b = &f->INSN(b->op[1]);
|
b = &f->INSN(b->op[1]);
|
/* Not in usual form? */
|
/* Not in usual form? */
|
if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
|
if (a->opt[1] != b->opt[1] || a->op[1] != b->op[1]
|
|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) continue;
|
|| a->opt[2] != OPT_CONST || b->opt[2] != OPT_CONST) continue;
|
|
|
//PRINTF ("%i %i, ", a->op[2], b->op[2]);
|
//PRINTF ("%i %i, ", a->op[2], b->op[2]);
|
|
|
/* Check if they touch together */
|
/* Check if they touch together */
|
if (a->op[2] + aw == b->op[2]
|
if (a->op[2] + aw == b->op[2]
|
&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
|
&& REF_BB(f->msched[i - 1]) == REF_BB(f->msched[i])) {
|
/* yes => do burst */
|
/* yes => do burst */
|
f->mtype[i - 1] &= ~MT_BURSTE;
|
f->mtype[i - 1] &= ~MT_BURSTE;
|
f->mtype[i - 1] |= MT_BURST;
|
f->mtype[i - 1] |= MT_BURST;
|
f->mtype[i] |= MT_BURST | MT_BURSTE;
|
f->mtype[i] |= MT_BURST | MT_BURSTE;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
for (i = 0; i < f->nmsched; i++)
|
for (i = 0; i < f->nmsched; i++)
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "[%x]%x%c ", f->msched[i], f->mtype[i] & MT_WIDTH, (f->mtype[i] & MT_BURST) ? (f->mtype[i] & MT_BURSTE) ? 'E' : 'B' : ' ');
|
cucdebug (2, "\n");
|
cucdebug (2, "\n");
|
|
|
/* We don't need dependencies in non-memory instructions */
|
/* We don't need dependencies in non-memory instructions */
|
for (b = 0; b < f->num_bb; b++) {
|
for (b = 0; b < f->num_bb; b++) {
|
cuc_insn *insn = f->bb[b].insn;
|
cuc_insn *insn = f->bb[b].insn;
|
for (i = 0; i < f->bb[b].ninsn; i++) if (!(insn[i].type & IT_MEMORY))
|
for (i = 0; i < f->bb[b].ninsn; i++) if (!(insn[i].type & IT_MEMORY))
|
dispose_list (&insn[i].dep);
|
dispose_list (&insn[i].dep);
|
}
|
}
|
|
|
if (cuc_debug > 5) print_cuc_bb (f, "AFTER_MEM_REMOVAL2");
|
if (cuc_debug > 5) print_cuc_bb (f, "AFTER_MEM_REMOVAL2");
|
/* Reduce number of dependecies, keeping just direct dependencies, based on memory schedule */
|
/* Reduce number of dependecies, keeping just direct dependencies, based on memory schedule */
|
{
|
{
|
int lastl[3] = {-1, -1, -1};
|
int lastl[3] = {-1, -1, -1};
|
int lasts[3] = {-1, -1, -1};
|
int lasts[3] = {-1, -1, -1};
|
int lastc[3] = {-1, -1, -1};
|
int lastc[3] = {-1, -1, -1};
|
int last_load = -1, last_store = -1, last_call = -1;
|
int last_load = -1, last_store = -1, last_call = -1;
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for (i = 0; i < f->nmsched; i++) {
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for (i = 0; i < f->nmsched; i++) {
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int t = f->mtype[i] & MT_LOAD ? 0 : f->mtype[i] & MT_STORE ? 1 : 2;
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int t = f->mtype[i] & MT_LOAD ? 0 : f->mtype[i] & MT_STORE ? 1 : 2;
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int maxl = lastl[t];
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int maxl = lastl[t];
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int maxs = lasts[t];
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int maxs = lasts[t];
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int maxc = lastc[t];
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int maxc = lastc[t];
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dep_list *tmp = f->INSN(f->msched[i]).dep;
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dep_list *tmp = f->INSN(f->msched[i]).dep;
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cucdebug (7, "!%i %x %p\n", i, f->msched[i], tmp);
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cucdebug (7, "!%i %x %p\n", i, f->msched[i], tmp);
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while (tmp) {
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while (tmp) {
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if (f->INSN(tmp->ref).type & IT_MEMORY && REF_BB(tmp->ref) == REF_BB(f->msched[i])) {
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if (f->INSN(tmp->ref).type & IT_MEMORY && REF_BB(tmp->ref) == REF_BB(f->msched[i])) {
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cucdebug (7, "%i %x %lx\n", i, f->msched[i], tmp->ref);
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cucdebug (7, "%i %x %lx\n", i, f->msched[i], tmp->ref);
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/* Search for the reference */
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/* Search for the reference */
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for (j = 0; j < f->nmsched; j++) if (f->msched[j] == tmp->ref) break;
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for (j = 0; j < f->nmsched; j++) if (f->msched[j] == tmp->ref) break;
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assert (j < f->nmsched);
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assert (j < f->nmsched);
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if (f->mtype[j] & MT_STORE) {
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if (f->mtype[j] & MT_STORE) {
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if (maxs < j) maxs = j;
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if (maxs < j) maxs = j;
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} else if (f->mtype[j] & MT_LOAD) {
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} else if (f->mtype[j] & MT_LOAD) {
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if (maxl < j) maxl = j;
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if (maxl < j) maxl = j;
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} else if (f->mtype[j] & MT_CALL) {
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} else if (f->mtype[j] & MT_CALL) {
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if (maxc < j) maxc = j;
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if (maxc < j) maxc = j;
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}
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}
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}
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}
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tmp = tmp->next;
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tmp = tmp->next;
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}
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}
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dispose_list (&f->INSN(f->msched[i]).dep);
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dispose_list (&f->INSN(f->msched[i]).dep);
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if (f->mtype[i] & MT_STORE) {
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if (f->mtype[i] & MT_STORE) {
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maxs = last_store;
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maxs = last_store;
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last_store = i;
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last_store = i;
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} else if (f->mtype[i] & MT_LOAD) {
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} else if (f->mtype[i] & MT_LOAD) {
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maxl = last_load;
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maxl = last_load;
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last_load = i;
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last_load = i;
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} else if (f->mtype[i] & MT_CALL) {
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} else if (f->mtype[i] & MT_CALL) {
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maxc = last_call;
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maxc = last_call;
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last_call = i;
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last_call = i;
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}
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}
|
|
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if (maxl > lastl[t]) {
|
if (maxl > lastl[t]) {
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add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxl]);
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add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxl]);
|
lastl[t] = maxl;
|
lastl[t] = maxl;
|
}
|
}
|
if (maxs > lasts[t]) {
|
if (maxs > lasts[t]) {
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add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxs]);
|
add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxs]);
|
lasts[t] = maxs;
|
lasts[t] = maxs;
|
}
|
}
|
if (maxc > lastc[t]) {
|
if (maxc > lastc[t]) {
|
add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxc]);
|
add_dep (&f->INSN(f->msched[i]).dep, f->msched[maxc]);
|
lastc[t] = maxc;
|
lastc[t] = maxc;
|
}
|
}
|
//PRINTF ("%i(%i)> ml %i(%i) ms %i(%i) lastl %i %i lasts %i %i last_load %i last_store %i\n", i, f->msched[i], maxl, f->msched[maxl], maxs, f->msched[maxs], lastl[0], lastl[1], lasts[0], lasts[1], last_load, last_store);
|
//PRINTF ("%i(%i)> ml %i(%i) ms %i(%i) lastl %i %i lasts %i %i last_load %i last_store %i\n", i, f->msched[i], maxl, f->msched[maxl], maxs, f->msched[maxs], lastl[0], lastl[1], lasts[0], lasts[1], last_load, last_store);
|
|
|
/* What we have to wait to finish this BB? */
|
/* What we have to wait to finish this BB? */
|
if (i + 1 >= f->nmsched || REF_BB(f->msched[i + 1]) != REF_BB(f->msched[i])) {
|
if (i + 1 >= f->nmsched || REF_BB(f->msched[i + 1]) != REF_BB(f->msched[i])) {
|
if (last_load > lastl[t]) {
|
if (last_load > lastl[t]) {
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_load]);
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_load]);
|
lastl[t] = last_load;
|
lastl[t] = last_load;
|
}
|
}
|
if (last_store > lasts[t]) {
|
if (last_store > lasts[t]) {
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_store]);
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_store]);
|
lasts[t] = last_store;
|
lasts[t] = last_store;
|
}
|
}
|
if (last_call > lastc[t]) {
|
if (last_call > lastc[t]) {
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_call]);
|
add_dep (&f->bb[REF_BB(f->msched[i])].mdep, f->msched[last_call]);
|
lastc[t] = last_call;
|
lastc[t] = last_call;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
return modified;
|
return modified;
|
}
|
}
|
|
|
