[all-commits] [llvm/llvm-project] f1d648: [GVN] Use m_LogicalAnd/Or to propagate equality fr...

[Juneyoung Lee via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f1d648b973d32ab0e70ef20efb0f146240e50f58
      https://github.com/llvm/llvm-project/commit/f1d648b973d32ab0e70ef20efb0f146240e50f58
  Author: Juneyoung Lee <aqjune at gmail.com>
  Date:   2020-12-28 (Mon, 28 Dec 2020)

  Changed paths:
    M llvm/lib/Transforms/Scalar/GVN.cpp
    M llvm/test/Transforms/GVN/condprop.ll

  Log Message:
  -----------
  [GVN] Use m_LogicalAnd/Or to propagate equality from branch conditions

This patch makes GVN recognize `select c1, c2, false` as well as `select c1, true, c2`
branch condition and propagate equality from these.

See llvm.org/pr48353, D93065

Differential Revision: https://reviews.llvm.org/D93841