[all-commits] [llvm/llvm-project] 843d43: [X86] computeKnownBitsForTargetNode - add X86ISD::...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 843d43e62ae132b723a2ba9606299ba2159c8949
      https://github.com/llvm/llvm-project/commit/843d43e62ae132b723a2ba9606299ba2159c8949
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-06-21 (Tue, 21 Jun 2022)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/lib/Target/X86/X86ISelLowering.h
    M llvm/test/CodeGen/X86/omit-urem-of-power-of-two-or-zero-when-comparing-with-zero.ll
    M llvm/test/CodeGen/X86/var-permute-256.ll
    M llvm/test/CodeGen/X86/vector-pack-128.ll
    M llvm/test/CodeGen/X86/vector_splat-const-shift-of-constmasked.ll

  Log Message:
  -----------
  [X86] computeKnownBitsForTargetNode - add X86ISD::VBROADCAST_LOAD handling

This requires us to override the isTargetCanonicalConstantNode callback introduced in D128144, so we can recognise the various cases where a VBROADCAST_LOAD constant is being reused at different vector widths to prevent infinite loops.