[all-commits] [llvm/llvm-project] a74941: Revert "[BasicAA] Handle two unknown sizes for GEPs"

[Florian Hahn via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: a74941da716d29a1d962d17b8112c40a8a45f9e7
      https://github.com/llvm/llvm-project/commit/a74941da716d29a1d962d17b8112c40a8a45f9e7
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2020-12-18 (Fri, 18 Dec 2020)

  Changed paths:
    M llvm/lib/Analysis/BasicAliasAnalysis.cpp
    M llvm/test/Analysis/BasicAA/phi-aa.ll
    M llvm/test/Analysis/BasicAA/recphi.ll
    M llvm/test/Transforms/LoopVectorize/ARM/pointer_iv.ll
    M llvm/test/Transforms/LoopVersioning/exit-block-dominates-rt-check-block.ll

  Log Message:
  -----------
  Revert "[BasicAA] Handle two unknown sizes for GEPs"

Temporarily revert commit 8b1c4e310c2f9686cad925ad81d8e2be10a1ef3c.

After 8b1c4e310c2f the compile-time for `MultiSource/Benchmarks/MiBench/consumer-lame`
dramatically increases with -O3 & LTO, causing issues for builders with
that configuration.

I filed PR48553 with a smallish reproducer that shows a 10-100x compile
time increase.