[BUG] Unknown TEXDEPBAR opcode in SASS (sm_35)

The TEXDEPBAR opcode in Nvidia's SASS assembly language halts the thread until the texture operation specified has been resolved. It was used during Nvidia's VLIW experiments with Kepler in sm_35 to allow the compiler to determine when dependencies have been satisfied so that the device doesn't have to.

Godbolt does not recognize this opcode and gives an error when more information is requested, although its PTX-to-SASS compiler does emit it.

More information: https://patents.google.com/patent/US20140049549A1/en