[all-commits] [llvm/llvm-project] 46a929: [SelectionDAG] Fix isKnownNeverZeroFloat for vecto...

[Danila Malyutin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 46a929f0a077186034d5692b013730578a2a2d36
      https://github.com/llvm/llvm-project/commit/46a929f0a077186034d5692b013730578a2a2d36
  Author: Danila Malyutin <danilaml at users.noreply.github.com>
  Date:   2024-01-17 (Wed, 17 Jan 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/test/CodeGen/X86/fminimum-fmaximum.ll

  Log Message:
  -----------
  [SelectionDAG] Fix isKnownNeverZeroFloat for vectors (#78308)

Return true iff all of vector elements are constant AND not zero

Fixes #77805

Previously, it'd return `true` (as in - the value is known to be never
zero) for any build_vector/splat_vector with non-constant elements.