gc: move typedcl2 into export.c

R=rsc
CC=golang-dev
https://golang.org/cl/5447043

src/cmd/gc/dcl.c

@@ -673,41 +673,6 @@ typedcl1(Node *n, Node *t, int local)
 	return nod(ODCLTYPE, n, N);
 }
 
-/*
- * typedcl1 but during imports
- */
-void
-typedcl2(Type *pt, Type *t)
-{
-	Node *n;
-
-	// override declaration in unsafe.go for Pointer.
-	// there is no way in Go code to define unsafe.Pointer
-	// so we have to supply it.
-	if(incannedimport &&
-	   strcmp(importpkg->name, "unsafe") == 0 &&
-	   strcmp(pt->nod->sym->name, "Pointer") == 0) {
-		t = types[TUNSAFEPTR];
-	}
-
-	if(pt->etype == TFORW)
-		goto ok;
-	if(!eqtype(pt->orig, t))
-		yyerror("inconsistent definition for type %S during import\n\t%lT\n\t%lT", pt->sym, pt->orig, t);
-	return;
-
-ok:
-	n = pt->nod;
-	copytype(pt->nod, t);
-	// unzero nod
-	pt->nod = n;
-
-	pt->sym->lastlineno = parserline();
-	declare(n, PEXTERN);
-
-	checkwidth(pt);
-}
-
 /*
  * structs, functions, and methods.
  * they don't belong here, but where do they belong?

src/cmd/gc/export.c

@@ -349,8 +349,31 @@ importvar(Sym *s, Type *t, int ctxt)
 void
 importtype(Type *pt, Type *t)
 {
-	if(pt != T && t != T)
-		typedcl2(pt, t);
+	Node *n;
+
+	if(pt != T && t != T) {
+		// override declaration in unsafe.go for Pointer.
+		// there is no way in Go code to define unsafe.Pointer
+		// so we have to supply it.
+		if(incannedimport &&
+		   strcmp(importpkg->name, "unsafe") == 0 &&
+		   strcmp(pt->nod->sym->name, "Pointer") == 0) {
+			t = types[TUNSAFEPTR];
+		}
+
+		if(pt->etype == TFORW) {
+			n = pt->nod;
+			copytype(pt->nod, t);
+			// unzero nod
+			pt->nod = n;
+			
+			pt->sym->lastlineno = parserline();
+			declare(n, PEXTERN);
+			
+			checkwidth(pt);
+		} else if(!eqtype(pt->orig, t))
+			yyerror("inconsistent definition for type %S during import\n\t%lT\n\t%lT", pt->sym, pt->orig, t);
+	}
 
 	if(debug['E'])
 		print("import type %T %lT\n", pt, t);

src/cmd/gc/go.h

@@ -964,7 +964,6 @@ Type*	tointerface(NodeList *l);
 Type*	tostruct(NodeList *l);
 Node*	typedcl0(Sym *s);
 Node*	typedcl1(Node *n, Node *t, int local);
-void	typedcl2(Type *pt, Type *t);
 Node*	typenod(Type *t);
 NodeList*	variter(NodeList *vl, Node *t, NodeList *el);