forked from OSchip/llvm-project
134 lines
2.1 KiB
C
134 lines
2.1 KiB
C
char rcsid_item[] = "$Id$";
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#include "b.h"
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#include <stdio.h>
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#include <string.h>
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#include "fe.h"
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static Item_Set fptr;
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ItemArray
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newItemArray()
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{
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ItemArray ia;
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ia = (ItemArray) zalloc(max_nonterminal *sizeof(*ia));
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return ia;
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}
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ItemArray
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itemArrayCopy(src) ItemArray src;
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{
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ItemArray dst;
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dst = newItemArray();
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memcpy(dst, src, max_nonterminal * sizeof(*dst));
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return dst;
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}
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Item_Set
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newItem_Set(relevant) Relevant relevant;
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{
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Item_Set ts;
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if (fptr) {
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ts = fptr;
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fptr = 0;
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memset(ts->virgin, 0, max_nonterminal * sizeof(struct item));
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if (ts->closed) {
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zfree(ts->closed);
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ts->closed = 0;
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}
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ts->num = 0;
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ts->op = 0;
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} else {
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ts = (Item_Set) zalloc(sizeof(struct item_set));
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ts->virgin = newItemArray();
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}
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ts->relevant = relevant;
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return ts;
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}
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void
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freeItem_Set(ts) Item_Set ts;
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{
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assert(!fptr);
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fptr = ts;
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}
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int
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equivSet(a, b) Item_Set a; Item_Set b;
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{
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register Relevant r;
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register int nt;
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register Item *aa = a->virgin;
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register Item *ba = b->virgin;
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/*
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return !bcmp(a->virgin, b->virgin, max_nonterminal * sizeof(Item));
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*/
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r = a->relevant ? a->relevant : b->relevant;
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assert(r);
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if (a->op && b->op && a->op != b->op) {
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return 0;
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}
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for (; (nt = *r) != 0; r++) {
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if (aa[nt].rule != ba[nt].rule || !EQUALCOST(aa[nt].delta, ba[nt].delta)) {
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return 0;
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}
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}
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return 1;
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}
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void
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printRepresentative(f, s) FILE *f; Item_Set s;
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{
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if (!s) {
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return;
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}
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fprintf(f, "%s", s->op->name);
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switch (s->op->arity) {
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case 1:
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fprintf(f, "(");
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printRepresentative(f, s->kids[0]);
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fprintf(f, ")");
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break;
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case 2:
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fprintf(f, "(");
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printRepresentative(f, s->kids[0]);
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fprintf(f, ", ");
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printRepresentative(f, s->kids[1]);
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fprintf(f, ")");
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break;
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}
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}
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void
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dumpItem(t) Item *t;
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{
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printf("[%s #%d]", t->rule->lhs->name, t->rule->num);
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dumpCost(t->delta);
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}
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void
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dumpItem_Set(ts) Item_Set ts;
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{
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int i;
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printf("Item_Set #%d: [", ts->num);
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for (i = 1; i < max_nonterminal; i++) {
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if (ts->virgin[i].rule) {
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printf(" %d", i);
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dumpCost(ts->virgin[i].delta);
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}
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}
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printf(" ]\n");
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}
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void
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dumpCost(dc) DeltaCost dc;
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{
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printf("(%ld)", (long) dc);
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}
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