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+title = "When are phi functions executed"
+author = "Yann Herklotz"
+tags = []
+categories = []
+backlinks = ["3a8a2"]
+forwardlinks = []
+zettelid = "3a8a3"
++++
+
+Phi functions are executed directly after a `Inop` instruction that
+leads to a branching instruction, otherwise the standard execution of
+RTL instructions is performed. This means that it is much easier to
+define the semantics of the execution of the phi instructions, as these
+only have to be performed after an `Inop` instruction.