[all-commits] [llvm/llvm-project] 419f90: [LoongArch] Support llvm.is.fpclass for f32 and f64

[Lu Weining via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 419f90e93aad0c53ae5a54504710d9b8cf779256
      https://github.com/llvm/llvm-project/commit/419f90e93aad0c53ae5a54504710d9b8cf779256
  Author: Weining Lu <luweining at loongson.cn>
  Date:   2023-09-14 (Thu, 14 Sep 2023)

  Changed paths:
    M llvm/lib/Target/LoongArch/LoongArchFloat32InstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchFloat64InstrInfo.td
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
    M llvm/lib/Target/LoongArch/LoongArchInstrInfo.h
    M llvm/lib/Target/LoongArch/LoongArchInstrInfo.td
    A llvm/test/CodeGen/LoongArch/is_fpclass_f32.ll
    A llvm/test/CodeGen/LoongArch/is_fpclass_f64.ll

  Log Message:
  -----------
  [LoongArch] Support llvm.is.fpclass for f32 and f64

is_fpclass (fj, mask)
->
sltu (r0, and (movfr2gr.[sd] (fclass.[sd] fj), (to_fclass_mask mask)))

[1]: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#_fclass_sd

Reviewed By: wangleiat

Differential Revision: https://reviews.llvm.org/D159183