[all-commits] [llvm/llvm-project] 9082c1: [Support] Add KnownBits::concat method

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9082c131061c7391bf372fcca52031ed8b945f89
      https://github.com/llvm/llvm-project/commit/9082c131061c7391bf372fcca52031ed8b945f89
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2022-07-29 (Fri, 29 Jul 2022)

  Changed paths:
    M llvm/include/llvm/Support/KnownBits.h
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/unittests/Support/KnownBitsTest.cpp

  Log Message:
  -----------
  [Support] Add KnownBits::concat method

Add a method for the various cases where we need to concatenate 2 KnownBits together (BUILD_PAIR and SHIFT_PARTS in particular) - uses the existing APInt::concat 'HiBits.concat(LoBits)' convention

Differential Revision: https://reviews.llvm.org/D130557