[all-commits] [llvm/llvm-project] 780054: CodeGen: Add ISD::AssertNoFPClass (#138839)

[YunQiang Su via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 780054d3ff18075a6bc433029f336931792b1d2d
      https://github.com/llvm/llvm-project/commit/780054d3ff18075a6bc433029f336931792b1d2d
  Author: YunQiang Su <yunqiang at isrc.iscas.ac.cn>
  Date:   2025-05-15 (Thu, 15 May 2025)

  Changed paths:
    M llvm/include/llvm/CodeGen/ISDOpcodes.h
    M llvm/include/llvm/Target/TargetSelectionDAG.td
    M llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
    M llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
    M llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
    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/SelectionDAGISel.cpp
    A llvm/test/CodeGen/AArch64/nofpclass.ll
    A llvm/test/CodeGen/ARM/nofpclass.ll
    A llvm/test/CodeGen/Mips/nofpclass.ll
    A llvm/test/CodeGen/X86/nofpclass.ll

  Log Message:
  -----------
  CodeGen: Add ISD::AssertNoFPClass (#138839)

It is used to mark a value that we are sure that it is not some fcType.
The examples include:

  * An arguments of a function is marked with nofpclass
  * Output value of an intrinsic can be sure to not be some type

So that the following operation can make some assumptions.



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