[all-commits] [llvm/llvm-project] f5603a: [ScalarEvolution] Make sure getMinusSCEV doesn't n...

[Eli Friedman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f5603aa050cefff9052e9085920f3aa2d1d31b86
      https://github.com/llvm/llvm-project/commit/f5603aa050cefff9052e9085920f3aa2d1d31b86
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2021-07-07 (Wed, 07 Jul 2021)

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

  Log Message:
  -----------
  [ScalarEvolution] Make sure getMinusSCEV doesn't negate pointers.

Add a function removePointerBase that returns, essentially, S -
getPointerBase(S).  Use it in getMinusSCEV instead of actually
subtracting pointers.

Differential Revision: https://reviews.llvm.org/D105503