[all-commits] [llvm/llvm-project] 3a54b6: [MemDep] Use BatchAA when computing pointer depend...

[Nikita Popov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3a54b6a4b71c21cf3bab4f132cbc2904fb9d997e
      https://github.com/llvm/llvm-project/commit/3a54b6a4b71c21cf3bab4f132cbc2904fb9d997e
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2020-08-25 (Tue, 25 Aug 2020)

  Changed paths:
    M llvm/lib/Analysis/MemoryDependenceAnalysis.cpp

  Log Message:
  -----------
  [MemDep] Use BatchAA when computing pointer dependencies

We're not changing IR while running a single MemDep query, so it's
safe to cache alias analysis results using BatchAA. This adds BatchAA
usage to getSimplePointerDependencyFrom(), which is non-intrusive --
covering larger parts (like a whole processNonLocalLoad query) is
also possible, but requires threading BatchAA through a bunch of APIs.

For the ThinLTO configuration, this is a 1% geomean improvement on CTMark.

Differential Revision: https://reviews.llvm.org/D85583