These walls directly support roof trusses or rafters.
Hip roof load bearing walls.
The exception would be in the case of a hip roof were ceiling joists often change direction at each end of the house and a wall is run crossways to support the inside ends of the joist the ceiling joists appear to change direction directly above one of the walls.
A gable roof is a roof that slopes downward from a central ridge to a building s exterior walls on two.
Stair well openings are also typically load bearing points.
Secondly prefabricated hip roof trusses are much less expensive than stick roof framingsince they come in short lengths of 2 4 stock.
However a house with a hip roof structure suggests that all the exterior walls are bearing walls.
A bearing wall will run in the same direction as the ridge of your roof.
Just to be on the side of caution i would install an 8ft 4x4 directly centered under the splice with lag bolts and remove the vertical.
The wall you are wanting to remove is not a bearing wall by looking at the framing in the attic and the roof lines of the house.
Advantages of prefabricated hip roof trusses.
Firstly premade hip roof trusses span a longer distance and can do without the presence of inside weight bearing walls.
Side walls are primary load bearing walls in simple gable end framing but hip roofs and complex roof lines depend on more than just the side.