shithub: mc

Info  •  Files  •  Log  •  Branches

Correct dataflow.

    We want to increment i, not decrement it.

--- a/8/asm.h

+++ b/8/asm.h

@@ -142,3 +142,4 @@

 /* useful functions */

 size_t size(Node *n);

 void breakhere();

+void dumpasm(Asmbb **bbs, size_t nbb, FILE *fd);

--- a/8/ra.c

+++ b/8/ra.c

@@ -140,10 +140,10 @@

 	bb[i]->liveout = bsclear(bb[i]->liveout);

     }

-    changed = 0;

+    changed = 1;

     while (changed) {

 	changed = 0;

-	for (i = 0; i < nbb; i--) {

+	for (i = 0; i < nbb; i++) {

 	    old = bsdup(bb[i]->liveout);

 	    /* liveout[b] = U(s in succ) livein[s] */

 	    for (j = 0; j < bsmax(bb[i]->succ); j++) {

@@ -162,7 +162,7 @@

     }

 }

-void asmdump(Asmbb **bbs, size_t nbb, FILE *fd)

+void dumpasm(Asmbb **bbs, size_t nbb, FILE *fd)

 {

     size_t i, j;

     Asmbb *bb;

@@ -253,5 +253,5 @@

 {

     liveness(s);

     if (debug)

-	asmdump(s->bb, s->nbb, stdout);

+	dumpasm(s->bb, s->nbb, stdout);

 }