scc

commit bb1e1b0015d417d616261d5acb438bd74de1919e
parent 235aee1ffddb12ecbab5823365199931283e5ea4
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 15 Apr 2014 13:29:54 +0200

Simplify check of a Symbol Node

The unique way of detecting that a Node is a Symbol is
to check the code installed in the Node, that in the case
of emitsym implies a Symbol Node. This check is not
very clear, so it is better use a macro with a better name.

Diffstat:
M
cc.h
 | 
1
+
M
expr.c
 | 
2
+-

2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/cc.h b/cc.h
@@ -244,5 +244,6 @@ extern Node
 #define SYM(s) ((union unode) {.sym = s})
 #define OP(s) ((union unode) {.op = s})
 #define TYP(s) ((union unode) {.type = s})
+#define ISNODESYM(n) ((n)->code == emitsym)
 
 #endif
diff --git a/expr.c b/expr.c
@@ -422,7 +422,7 @@ unary(void)
 	case OADDR:
 		if (!np->b.lvalue)
 			goto no_lvalue;
-		if (np->code == emitsym && np->u.sym->s.isregister)
+		if (ISNODESYM(np) && np->u.sym->s.isregister)
 			goto reg_address;
 		tp = mktype(tp, PTR, NULL, 0);
 		break;