vsk added a comment.

Thanks Hans. I've merged the revert into the apple fork. While the commit was 
in-tree, we noticed that this enabled HCS during LTO. There was a surprising 
~17% regression of 483.xalancbmk with LTO (+ PGO) enabled:  `2020-10-16      
CINT2006/483.xalancbmk  17.87%`. We don't see the regression on the non-LTO 
performance bots. This is something we'll need to investigate before relanding.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D57265/new/

https://reviews.llvm.org/D57265

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