[llvm-dev] PHI incoming blocks order

[Anastasiya Ruzhanskaya via llvm-dev]

Hello,
Is it a convenient way except of somehow iterating from one block to
another to find from which block I have initial incoming value and from
which I have a changing incoming value (this is only for phi nodes with two
incoming blocks)? Dominator tree requires to know one block and one block
edge...this is not what I want. Is it valid to take two first instructions
from two incoming blocks and see what dominates what?
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