Optimizing Phi Instruction Placement after changes in CFG

Published: 14/02/2020
Optimizing Phi Instruction Placement after changes in CFG
Source: SOFTWAREENGINEERING.STACKEXCHANGE.COM

I am unable to find an algorithm for optimizing or eliminating Phi instructions after some Control Flow Graph modifications. I have found algorithms for destructing and constructing the SSA form, and for regenerating the SSA in the event where it was broken (by introducing multiple assignments to the same variable.) However, I am not sure if there are any published algorithms for optimizing Phi pl

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