From afb46fe317fc7dc49aef5449dedc82435ee81f7f Mon Sep 17 00:00:00 2001
From: Quentin Carbonneaux <quentin.carbonneaux@yale.edu>
Date: Sat, 11 Jul 2015 16:02:16 -0400
Subject: remove unused lo.c

---
 lisc/lo.c | 99 ---------------------------------------------------------------
 1 file changed, 99 deletions(-)
 delete mode 100644 lisc/lo.c

diff --git a/lisc/lo.c b/lisc/lo.c
deleted file mode 100644
index 19b3a7d..0000000
--- a/lisc/lo.c
+++ /dev/null
@@ -1,99 +0,0 @@
-#include "lisc.h"
-
-static void
-rporec(int *rpo, int *cnt, Blk *bs, int b)
-{
-	if (rpo[b] >= 0)
-		return;
-	if (bs[b].suc1 >= 0)
-		rporec(rpo, cnt, bs, bs[b].suc1);
-	if (bs[b].suc0 >= 0)
-		rporec(rpo, cnt, bs, bs[b].suc0);
-	rpo[b] = --*cnt;
-}
-
-int
-rposched(Blk *bs, int nb)
-{
-	static int rpo[MaxBlks];
-	Blk t;
-	int cnt, i, j;
-
-	for (i=0; i<nb; i++)
-		rpo[i] = -1;
-	cnt = nb;
-	rporec(rpo, &cnt, bs, 0);
-	if (cnt) {
-		for (i=0; i<nb; i++)
-			rpo[i] -= cnt;
-	}
-	for (i=0; i<nb; i++) {
-		if (bs[i].suc0 >= 0)
-			bs[i].suc0 = rpo[bs[i].suc0];
-		if (bs[i].suc1 >= 0)
-			bs[i].suc1 = rpo[bs[i].suc1];
-	}
-/*
-  A little messy, the idea is that we have an
-  array permutation inside the rpo array, now we
-  apply it to the bs array with a linear algorithm
-  using swaps.
-*/
-	for (i=0; i<nb; i++)
-		while (rpo[i] >= 0 && rpo[i] != i) {
-			j = rpo[i];
-			rpo[i] = rpo[j];
-			rpo[j] = j;
-			t = bs[i];
-			bs[i] = bs[j];
-			bs[j] = t;
-		}
-	return nb - cnt;
-}
-
-
-void
-cfdump(FILE *f, char *pname, Blk *bs, int nb)
-{
-	Blk *b;
-	int i;
-
-	fprintf(f, "digraph %s {\n", pname);
-	for (b=bs, i=0; i<nb; i++, b++) {
-		if (b->suc0 >= 0)
-			fprintf(f, "b%d -> b%d;\n", i, b->suc0);
-		if (b->suc1 >= 0)
-			fprintf(f, "b%d -> b%d;\n", i, b->suc1);
-		fprintf(f, "b%d [shape=box]\n", i);
-	}
-	fprintf(f, "}\n");
-}
-
-#define LEN(a) sizeof a / sizeof a[0]
-
-Blk rpocond[] = {
-	{ .suc0 =  2, .suc1 =  3 },
-	{ .suc0 = -1, .suc1 = -1 },
-	{ .suc0 =  1, .suc1 = -1 },
-	{ .suc0 = -1, .suc1 =  1 },
-	{ .suc0 = 12, .suc1 = -1 }, /* dead */
-};
-
-int
-main()
-{
-	Blk *bs;
-	int nb;
-	FILE *f;
-
-	bs = rpocond;
-	nb = LEN(rpocond);
-
-	f = fopen("cf.dot", "w");
-	cfdump(f, "bef", bs, nb);
-	nb = rposched(bs, nb);
-	cfdump(f, "aft", bs, nb);
-	fclose(f);
-
-	return 0;
-}
-- 
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