[all-commits] [llvm/llvm-project] 8bb713: [Attributor] Allow lookupAAFor to return null on i...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8bb713207d2cc6efeaa78850bbd89a3a5c65fe03
      https://github.com/llvm/llvm-project/commit/8bb713207d2cc6efeaa78850bbd89a3a5c65fe03
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2021-06-04 (Fri, 04 Jun 2021)

  Changed paths:
    M llvm/include/llvm/Transforms/IPO/Attributor.h

  Log Message:
  -----------
  [Attributor] Allow lookupAAFor to return null on invalid state

This patch adds an option to `lookupAAFor` that allows it to return a
nullptr if the state of the looked up attribute is invalid. This is so
future passes can use this to query other attributes with the guarantee
that they are valid.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D103556