System Information
Windows 10 pro, AMD RX Vega64

Blender Version
Broken: 2.80 alpha Date 19/07/18

Short description of error
Like title, Blender crashed every time i did try to launch a render with gpu using cycles, except when i choose 512x512px as tile, in this case only blender didn't crash but give the following error "Split Kernel error: failed to load Kernel_path_init".
With eevee it's work fine.

Exact steps for others to reproduce the error
P1: Open blender
P2: Use the default scene (same result with every scene i try)
P3: Select cycles and gpu
P4: Choose a tile size (under 256x256 or above 1000x1000, in the middle i recive the text error without crash)