• Timothy Arceri's avatar
    nir/opt_loop_unroll: Remove unneeded phis if we make progress · 1546b99e
    Timothy Arceri authored
    Now that SSA values can be derefs and they have special rules, we have
    to be a bit more careful about our LCSSA phis.  In particular, we need
    to clean up in case LCSSA ended up creating a phi node for a deref.
    This avoids validation issues with some CTS tests with the new patch,
    but its possible this we could also see the same problem with the
    existing unrolling passes.
    1546b99e
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