[all-commits] [llvm/llvm-project] 965906: [SCEV] Further clarify comments regarding UB and z...

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 965906997865a470e1e5751bad6856a2f6375829
      https://github.com/llvm/llvm-project/commit/965906997865a470e1e5751bad6856a2f6375829
  Author: Philip Reames <listmail at philipreames.com>
  Date:   2021-09-07 (Tue, 07 Sep 2021)

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

  Log Message:
  -----------
  [SCEV] Further clarify comments regarding UB and zero stride

Follow on to D109029. I realized we had no mention of mustprogrress in the comment (as it prexisted mustprogress in the codebase). In the process of adding it, I tweaked the preconditions into something I think is more clear. Note that mustprogress is checked in the code.

Differential Revision: https://reviews.llvm.org/D109091