[all-commits] [llvm/llvm-project] bbd57e: [SelectionDAG] Add initial plumbing for the disjoi...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbd57e18326b4c58072a113190afaadd147c679e
      https://github.com/llvm/llvm-project/commit/bbd57e18326b4c58072a113190afaadd147c679e
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2024-01-02 (Tue, 02 Jan 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/SelectionDAGNodes.h
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

  Log Message:
  -----------
  [SelectionDAG] Add initial plumbing for the disjoint flag. (#76751)

This copies the flag from IR to the SDNode in SelectionDAGBuilder, clears
the flag in SimplifyDemandedBits, and adds it to canCreateUndefOrPoison.

Uses of the flag will come in later patches.