[PATCH] D60154: [PGO] Better handling of profile hash mismatch

[Rong Xu via Phabricator via llvm-commits]

xur created this revision.
xur added reviewers: davidxl, vsk.

We currently assume profile hash conflicts will be caught by an upfront check and we assert for the cases that escape the check. The assumption is not always true as there are chances of conflict. This patch prints a warning and skips annotating the function for the escaped cases,.


https://reviews.llvm.org/D60154

Files:
  lib/Transforms/Instrumentation/PGOInstrumentation.cpp
  test/Transforms/PGOProfile/Inputs/select_hash_conflict.proftext
  test/Transforms/PGOProfile/select_hash_conflict.ll

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