It’s a Morning Glory. I like them, but some people find them invasive. They seed themselves in the fall and spread easily. They can start vining and cover a lot of ground (or an entire porch rail) over a summer.
Just be prepared for the glory invasion! The Grandpa Ott variety has beautiful, glowing flowers and produces an incredible amount of seed pods. These seeds will end up everywhere—sidewalk cracks, lawns, garden beds, etc. It’s a trade-off: if you need something covered quickly, this is perfect, but you’ll be pulling seedlings and plants for years. It’s hands down the toughest morning glory I’ve ever grown! 
I just let mine grow up a tree stake and cut it down easily when it nearly stopped blooming. This way, I saved a ton of seeds from spreading. A TON.
I’ve heard that people also refer to it as ‘mile a minute.
It’s part of the Convolvulus family of plants. If it doesn’t experience snow every winter, it will behave like a weed.
Yes, it’s the worst! Whenever I see a bindweed flower, I can’t help but wonder how it differs from morning glory.
Amen to that! It’s in my garden too, causing all sorts of chaos!