be: Expand '{name}' in the attribute 'emit' to the name of the operation.

This way node templates can also provide an emitter.
If present, the attribute 'name' is used, otherwise the key name of the node.

ir/be/scripts/generate_emitter.pl

@@ -33,6 +33,9 @@ foreach my $op (sort(keys(%nodes))) {
 	my $n = $nodes{$op};
 
 	my $emit = $n->{emit};
+	if (!defined($emit) && defined($n->{template})) {
+		$emit = $n->{template}->{emit};
+	}
 	if (defined($emit)) {
 		my $emit_func;
 		if ($emit eq "") {
@@ -42,6 +45,8 @@ foreach my $op (sort(keys(%nodes))) {
 
 			$obst_func .= "static void $emit_func(ir_node const *const node)\n";
 			$obst_func .= "{\n";
+			my $name = $n->{name} // lc($op);
+			$emit =~ s/{name}/$name/g;
 			foreach my $template (split(/\n/, $emit)) {
 				if ($template ne '') {
 					$obst_func .= "\t${arch}_emitf(node, \"$template\");\n";