[all-commits] [llvm/llvm-project] 1d542f: Revert "[OpenMPOpt] ICV Tracking"

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1d542f0ca83fa1411d6501a8d088450d83abd5b8
      https://github.com/llvm/llvm-project/commit/1d542f0ca83fa1411d6501a8d088450d83abd5b8
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-07-10 (Fri, 10 Jul 2020)

  Changed paths:
    M llvm/include/llvm/Transforms/IPO/Attributor.h
    M llvm/lib/Transforms/IPO/OpenMPOpt.cpp
    M llvm/test/Transforms/OpenMP/icv_tracking.ll

  Log Message:
  -----------
  Revert "[OpenMPOpt] ICV Tracking"

There appears to be some kind of memory corruption/use-after-free/etc
going on here. In particular, in `OpenMPOpt::deleteParallelRegions()`,
in `DeleteCallCB()`, `CI` is garbage.

WIll post reproducer in the original review.

This reverts commit 6c4a5e9257bac022ffe60e466686ba7fc96ffd1a.