Still the same with Mesa 17.2.5

# glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.2.5
OpenGL version string: 3.0 Mesa 17.2.5
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 17.2.5

# glxinfo | grep -i llvm
    Device: AMD TAHITI (DRM 2.50.0 / 4.13.0-1-amd64, LLVM 5.0.0) (0x679a)
OpenGL renderer string: AMD TAHITI (DRM 2.50.0 / 4.13.0-1-amd64, LLVM 5.0.0)


And also with 17.3.0 rc5.

# glxinfo | grep Mesa
client glx vendor string: Mesa Project and SGI
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.3.0-rc5
OpenGL version string: 3.0 Mesa 17.3.0-rc5
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 17.3.0-rc5

# glxinfo | grep -i llvm
    Device: AMD TAHITI (DRM 2.50.0 / 4.13.0-1-amd64, LLVM 5.0.0) (0x679a)
OpenGL renderer string: AMD TAHITI (DRM 2.50.0 / 4.13.0-1-amd64, LLVM 5.0.0)