[PATCH] D127353: FunctionPropertiesAnalysis: handle callsite BBs that lose edges

[Mircea Trofin via Phabricator via llvm-commits]

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There could be successors that were reached before but now are only
reachable from elsewhere in the CFG.

Suppose the following diamond CFG (lines are arrows pointing down):

    A
  /   \

B     C

  \   /
    D

There's a call site in C that is inlined. Upon doing that, it turns out
it expands to:

  call void @llvm.trap()
  unreachable

D isn't reachable from C anymore, but we did discount it when we set up
FunctionPropertiesUpdater, so we need to re-include it here.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D127353

Files:
  llvm/lib/Analysis/FunctionPropertiesAnalysis.cpp
  llvm/unittests/Analysis/FunctionPropertiesAnalysisTest.cpp

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