Added support for volatile

util/ego/cs/cs_partit.c

@@ -122,7 +122,7 @@ STATIC struct {
 /* mon */	HOPELESS,	XXX,	XXX,	XXX,	XXX,
 /* ngf */	UNAIR_OP,	ARGW,	XXX,	ARGW,	FLT,
 /* ngi */	UNAIR_OP,	ARGW,	XXX,	ARGW,	ANY,
-/* nop */	IGNORE,		XXX,	XXX,	XXX,	XXX,
+/* nop */	HOPELESS,	XXX,	XXX,	XXX,	XXX,
 /* rck */	BBLOCK_END,	XXX,	XXX,	XXX,	XXX,
 /* ret */	BBLOCK_END,	XXX,	XXX,	XXX,	XXX,
 /* rmi */	BINAIR_OP,	ARGW,	ARGW,	ARGW,	ANY,

util/ego/cs/cs_vnm.c

@@ -267,6 +267,7 @@ hopeless(instr)
 			break;
 		case op_mon:
 		case op_str:
+		case op_nop:	/* for volatiles */
 			/* We can't even trust "static" entities. */
 			kill_all();
 			clr_stack();

util/ego/il/il1_anal.c

@@ -143,6 +143,9 @@ STATIC anal_instr(p,b,cf)
 		case ps_hol:
 			check_labels(p,ARG(l));
 			break;
+		case op_nop:	/* volatile */
+			UNSUITABLE(p);
+			break;
 	   }
 	}
 }

util/ego/share/locals.c

@@ -118,6 +118,10 @@ STATIC check_local_use(l,locs)
 		default:
 			return;
 	}
+	if (l->l_next && INSTR(l->l_next) == op_nop) {
+		/* volatile */
+		return;
+	}
 	localvar(off_set(l),sz,locs,FALSE,(offset) 0);
 }