[all-commits] [llvm/llvm-project] ffc3e8: [NFC] [DAGCombine] Correct the result for sqrt eve...

[QingShan Zhang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffc3e800c65ee58166255ff897f8b7e6d850ddda
      https://github.com/llvm/llvm-project/commit/ffc3e800c65ee58166255ff897f8b7e6d850ddda
  Author: QingShan Zhang <qshanz at cn.ibm.com>
  Date:   2021-01-25 (Mon, 25 Jan 2021)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetLowering.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/PowerPC/PPCISelLowering.cpp

  Log Message:
  -----------
  [NFC] [DAGCombine] Correct the result for sqrt even the iteration is zero

For now, we correct the result for sqrt if iteration > 0. This doesn't make
sense as they are not strict relative.

Reviewed By: dmgreen, spatel, RKSimon

Differential Revision: https://reviews.llvm.org/D94480