Peter Rong 4be0873471 [FuzzMutate] New InsertPHINode strategy.
PHI Node can't be modeled like other instructions since its operand
number depends on predecessors. So we have a stand alone strategy for it.

Signed-off-by: Peter Rong <PeterRong96@gmail.com>

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D138959
2022-11-30 15:26:52 -08:00
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