[all-commits] [llvm/llvm-project] ba461f: [AArch64][GlobalISel] Legalize fp128 types as libc...

[Him188 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba461f8c6278a7b2fd7695454c1f184c38897ecd
      https://github.com/llvm/llvm-project/commit/ba461f8c6278a7b2fd7695454c1f184c38897ecd
  Author: Him188 <tguan at nvidia.com>
  Date:   2024-07-25 (Thu, 25 Jul 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/GlobalISel/LegalizerHelper.h
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/test/CodeGen/AArch64/arm64-ccmp.ll
    A llvm/test/CodeGen/AArch64/fcmp-fp128.ll
    M llvm/test/CodeGen/AArch64/fcmp.ll

  Log Message:
  -----------
  [AArch64][GlobalISel] Legalize fp128 types as libcalls for G_FCMP (#98452)

- Generate libcall for supported predicates.
- Generate unsupported predicates as combinations of supported
predicates.
- Vectors are scalarized, however some cases like `v3f128_fp128` are still failing, because we failed to legalize G_OR for these types.

GISel now generates the same code as SDAG, however, note the difference
in the `one` case.



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