[all-commits] [llvm/llvm-project] d9f91a: Revert D89381 "[SCEV] Recommit "Use nw flag and sy...

[Fangrui Song via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d9f91a3d14526fbc1d8cc9b98dbd8a093acf37d0
      https://github.com/llvm/llvm-project/commit/d9f91a3d14526fbc1d8cc9b98dbd8a093acf37d0
  Author: Fangrui Song <i at maskray.me>
  Date:   2020-10-20 (Tue, 20 Oct 2020)

  Changed paths:
    M llvm/include/llvm/Analysis/ScalarEvolution.h
    M llvm/lib/Analysis/ScalarEvolution.cpp
    M llvm/test/Analysis/ScalarEvolution/no-wrap-symbolic-becount.ll
    M llvm/test/Transforms/IndVarSimplify/X86/eliminate-trunc.ll
    M llvm/test/Transforms/IndVarSimplify/promote-iv-to-eliminate-casts.ll

  Log Message:
  -----------
  Revert D89381 "[SCEV] Recommit "Use nw flag and symbolic iteration count to sharpen ranges of AddRecs", attempt 2"

This reverts commit a10a64e7e334dc878d281aba9a46f751fe606567.

It broke polly/test/ScopInfo/NonAffine/non-affine-loop-condition-dependent-access_3.ll
The difference suggests that this may be a serious issue.