[PATCH] D64843: hwasan: Initialize the pass only once.

[Peter Collingbourne via Phabricator via cfe-commits]

pcc added a comment.

The instrumentation for globals is coming in a separate patch.

It seems more important to achieve implementation simplicity for the sanitizer passes rather than data locality because they make fundamental changes to the IR that touch the whole module (unlike other passes that are meant to preserve semantics). If the new PM is extended to allow whole-module changes within a function pass, I think the balance may change in favour of making this a function pass.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D64843/new/

https://reviews.llvm.org/D64843