5g, 5l: fix more set but not used warnings

These are present when building with gcc 4.6.

R=golang-dev, dave
CC=golang-dev, lvd
https://golang.org/cl/4636047

src/cmd/5g/reg.c

@@ -1556,27 +1556,27 @@ dumpone(Reg *r)
 			r->regdiff.b[z] |
 			r->act.b[z] |
 				0;
-//	if(bany(&bit)) {
-//		print("\t");
-//		if(bany(&r->set))
-//			print(" s:%Q", r->set);
-//		if(bany(&r->use1))
-//			print(" u1:%Q", r->use1);
-//		if(bany(&r->use2))
-//			print(" u2:%Q", r->use2);
-//		if(bany(&r->refbehind))
-//			print(" rb:%Q ", r->refbehind);
-//		if(bany(&r->refahead))
-//			print(" ra:%Q ", r->refahead);
-//		if(bany(&r->calbehind))
-//			print("cb:%Q ", r->calbehind);
-//		if(bany(&r->calahead))
-//			print(" ca:%Q ", r->calahead);
-//		if(bany(&r->regdiff))
-//			print(" d:%Q ", r->regdiff);
-//		if(bany(&r->act))
-//			print(" a:%Q ", r->act);
-//	}
+	if(bany(&bit)) {
+		print("\t");
+		if(bany(&r->set))
+			print(" s:%Q", r->set);
+		if(bany(&r->use1))
+			print(" u1:%Q", r->use1);
+		if(bany(&r->use2))
+			print(" u2:%Q", r->use2);
+		if(bany(&r->refbehind))
+			print(" rb:%Q ", r->refbehind);
+		if(bany(&r->refahead))
+			print(" ra:%Q ", r->refahead);
+		if(bany(&r->calbehind))
+			print("cb:%Q ", r->calbehind);
+		if(bany(&r->calahead))
+			print(" ca:%Q ", r->calahead);
+		if(bany(&r->regdiff))
+			print(" d:%Q ", r->regdiff);
+		if(bany(&r->act))
+			print(" a:%Q ", r->act);
+	}
 	print("\n");
 }
 

src/cmd/5l/noop.c

@@ -45,8 +45,6 @@ static	Sym*	sym_divu;
 static	Sym*	sym_mod;
 static	Sym*	sym_modu;
 
-static void setdiv(int);
-
 void
 noops(void)
 {
@@ -93,7 +91,6 @@ noops(void)
 				if(prog_div == P)
 					initdiv();
 				cursym->text->mark &= ~LEAF;
-				setdiv(p->as);
 				continue;
 	
 			case ANOP:
@@ -533,27 +530,6 @@ initdiv(void)
 	}
 }
 
-static void
-setdiv(int as)
-{
-	Prog *p = nil;
-
-	switch(as){
-	case ADIV:
-		p = prog_div;
-		break;
-	case ADIVU:
-		p = prog_divu;
-		break;
-	case AMOD:
-		p = prog_mod;
-		break;
-	case AMODU:
-		p = prog_modu;
-		break;
-	}
-}
-
 void
 nocache(Prog *p)
 {