[PATCH] D33787: [IR] BasicBlock updatePHIs function for updating predecessors

[Marcin Słowik via Phabricator via llvm-commits]

Marandil created this revision.

[IR] Add a function to update all PHI nodes within the block to change incoming values from IncomingOld to IncomingNew if IncomingOld is no longer a valid predecessor, or add new incoming edges in PHI nodes with IncomingNew otherwise.

The rationale behind this function is the amount of PHI node updates in my IR-based implementation of Jump Maps.

I've added a few unit tests for the function.


https://reviews.llvm.org/D33787

Files:
  include/llvm/IR/BasicBlock.h
  lib/IR/BasicBlock.cpp
  unittests/IR/BasicBlockTest.cpp

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