[Bug 93447] [r600g] llvm crash because of use of uninitialized stack

https://bugs.freedesktop.org/show_bug.cgi?id=93447

--- Comment #2 from Grazvydas Ignotas notasas@gmail.com --- I believe this bug can also be triggered by radeonsi though, as it also calls radeon_llvm_emit_prepare_cube_coords(). When target == TGSI_TEXTURE_CUBE and opcode == TGSI_OPCODE_TXF, si_shader.c will take and use garbage value from that function.

Unfortunately I don't have any radeonsi hardware to make a testcase to prove my point. It might also be difficult anyway due to nature of uinitialized variable bugs (it's likely to end up with a value that doesn't cause a crash).