[all-commits] [llvm/llvm-project] 9f37ec: [IndVars] Support AND/OR in optimizeLoopExitWithUn...

[Max Kazantsev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f37ecf8fae9a6fc87a216bee0c83d465e8466b4
      https://github.com/llvm/llvm-project/commit/9f37ecf8fae9a6fc87a216bee0c83d465e8466b4
  Author: Max Kazantsev <mkazantsev at azul.com>
  Date:   2023-01-11 (Wed, 11 Jan 2023)

  Changed paths:
    M llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
    M llvm/test/Transforms/IndVarSimplify/eliminate-backedge.ll
    M llvm/test/Transforms/IndVarSimplify/turn-to-invariant.ll

  Log Message:
  -----------
  [IndVars] Support AND/OR in optimizeLoopExitWithUnknownExitCount

This patch allows optimizeLoopExitWithUnknownExitCount to deal with
branches by conditions that are not immediately ICmp's, but aggregates
of ICmp's joined by arithmetic or logical AND/OR. Each ICmp is optimized
independently.

Differential Revision: https://reviews.llvm.org/D139832
Reviewed By: nikic