[PATCH] D38086: [ThinLTO] Fix dead stripping analysis for SamplePGO

[Teresa Johnson via Phabricator via llvm-commits]

tejohnson created this revision.
Herald added subscribers: eraman, inglorion, mehdi_amini.

The fix for dead stripping analysis in the case of SamplePGO indirect
calls to local functions (r313151) introduced the possibility of an
infinite loop.

Make sure we check for the value being already live after we update it
for SamplePGO indirect call handling.


https://reviews.llvm.org/D38086

Files:
  lib/Transforms/IPO/FunctionImport.cpp
  test/Transforms/PGOProfile/Inputs/thinlto_samplepgo_icp3.ll
  test/Transforms/PGOProfile/thinlto_samplepgo_icp3.ll

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