[all-commits] [llvm/llvm-project] 66da9f: [SelectionDAG] Fix copyExtraInfo where new node ha...

[Marco Elver via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 66da9f38f374e786b2f1c0ecdab0b651c94c4f27
      https://github.com/llvm/llvm-project/commit/66da9f38f374e786b2f1c0ecdab0b651c94c4f27
  Author: Marco Elver <elver at google.com>
  Date:   2025-07-17 (Thu, 17 Jul 2025)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/test/CodeGen/X86/pcsections-atomics.ll

  Log Message:
  -----------
  [SelectionDAG] Fix copyExtraInfo where new node has entry as operand (#149307)

Add special case handling where a new replacement node has the entry
node as an operand i.e. does not depend on any other nodes.

This can be observed with the existing X86/pcsections-atomics.ll test
case when targeting Haswell, where certain 128-bit atomics are
transformed into arch-specific instructions, with some operands having
no other dependencies.



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