[PATCH] D96015: [RegAllocFast] Handle case where operand of copy cannot be assigned.

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

> I'm not an expert in this area, but why is it any more job of the scheduler to keep the live ranges small for the sake of the allocator? Shouldn't the allocator be able to deal with any valid input (within computational reason)?

Because the input is not valid: if you don't reschedule, the code is not colorable.


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https://reviews.llvm.org/D96015