[all-commits] [llvm/llvm-project] 22dba7: [AC] Handle (X+C1)<C2 assumes (PR48408)

[Nikita Popov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 22dba707b0fbf778466baef718cc536700b99df3
      https://github.com/llvm/llvm-project/commit/22dba707b0fbf778466baef718cc536700b99df3
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2020-12-13 (Sun, 13 Dec 2020)

  Changed paths:
    M llvm/lib/Analysis/AssumptionCache.cpp
    M llvm/test/Transforms/CorrelatedValuePropagation/icmp.ll

  Log Message:
  -----------
  [AC] Handle (X+C1)<C2 assumes (PR48408)

InstCombine canonicalizes X>C && X<C' style comparisons into
(X+C1)<C2. This type of expression is recognized by some analyses
like LVI, but currently not when used inside assumptions, because
AssumptionCache does not track affected values for it.