var app = angular.module('plunker', []);

app.controller('MainCtrl', function($scope) {

});
app.directive('myDirective', function(){
  return {
    priority: 1000,
    compile: function(element){
      angular.element(element).removeAttr('ng-if').removeAttr('my-directive1');
    }
  };
});
app.directive('myDirective1', function(){
  return {
    compile: function(){
      console.log('in mydirective1');
    }
  };
});

<div my-directive ng-if="false" my-directive1>
  This div should be visible.
</div>