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This is possible since we now do uniform linking via a nir based linker.

Shader-db results for IRIS (SKL):

    total instructions in shared programs: 14947192 -> 14946397 (<.01%)
    instructions in affected programs: 39498 -> 38703 (-2.01%)
    helped: 230
    HURT: 18
    
    total cycles in shared programs: 324868402 -> 324847058 (<.01%)
    cycles in affected programs: 706701 -> 685357 (-3.02%)
    helped: 599
    HURT: 449

This series causes some CTS test failures but it turns out that it exposed some CTS bugs. All CTS bugs now have there fixes merged upstream.