scc

commit 19f5c0a15f0e21510092ded91507a7a6e5feb9cf
parent 1cdf7496909e5ec1532ad2fb1903c86f19f57ca6
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue,  7 Jun 2016 08:40:34 +0200

[cc2] Add newlabel()

This function is going to be useful in different targets and in a lot of
different situations, so it is a good idea to have it in cc2/code.c.

Diffstat:
M
cc2/arch/qbe/cgen.c
 | 
7
++-----
M
cc2/cc2.h
 | 
1
+
M
cc2/code.c
 | 
9
+++++++++

3 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/cc2/arch/qbe/cgen.c b/cc2/arch/qbe/cgen.c
@@ -410,11 +410,8 @@ cgen(Node *np)
 	case OBRANCH:
 		next = np->next;
 		load(np, LOADL);
-		if (next->label) {
-			sym = getsym(TMPSYM);
-			sym->kind = SLABEL;
-			next->label = sym;
-		}
+		if (!next->label)
+			next->label = newlabel();
 		ifyes = label2node(np->u.sym);
 		ifno = label2node(next->label);
 		op = ASBRANCH;
diff --git a/cc2/cc2.h b/cc2/cc2.h
@@ -207,6 +207,7 @@ extern void code(int op, Node *to, Node *from1, Node *from2);
 extern void defvar(Symbol *), defpar(Symbol *), defglobal(Symbol *);
 extern void setlabel(Symbol *sym);
 extern Node *label2node(Symbol *sym);
+extern Symbol *newlabel(void);
 
 /* node.c */
 #define SETCUR  1
diff --git a/cc2/code.c b/cc2/code.c
@@ -57,6 +57,15 @@ addr(Node *np, Addr *addr)
 	}
 }
 
+Symbol *
+newlabel(void)
+{
+	Symbol *sym = getsym(TMPSYM);
+
+	sym->kind = SLABEL;
+	return sym;
+}
+
 Node *
 label2node(Symbol *sym)
 {