[all-commits] [llvm/llvm-project] ddc63f: [AMDGPU][GISel] Legalize v2bf16 (#223803)

[LU-JOHN via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ddc63f8a20b63f2cf76299d73ab5c99c73144374
      https://github.com/llvm/llvm-project/commit/ddc63f8a20b63f2cf76299d73ab5c99c73144374
  Author: LU-JOHN <John.Lu at amd.com>
  Date:   2026-09-22 (Tue, 22 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    A llvm/test/CodeGen/AMDGPU/GlobalISel/fabs.bf16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fadd.bf16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fcanonicalize.bf16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fma.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/fminnum.bf16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fmul.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/fneg.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/fsub.bf16.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fadd.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fcanonicalize.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fma.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-fmul.mir
    A llvm/test/CodeGen/AMDGPU/GlobalISel/strict_fadd.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/strict_fma.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/strict_fmul.bf16.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/strict_fsub.bf16.ll

  Log Message:
  -----------
  [AMDGPU][GISel] Legalize v2bf16 (#223803)

Add V2BF16 legalization for fadd, fsub, fmul, fma, fmin, fmax and
fcanonicalize.

Reorganize rule building for `MinNumMaxNumIeee` and `MinNumMaxNum` so
that each type is handled independently.

Updated old tests and added new tests GlobalISel/fsub.bf16.ll,
GlobalISel/fabs.bf16.ll, GlobalISel/fminnum.bf16.ll and
GlobalISel/fneg.bf16.ll.

Clamp bf16 to 2 elements.

Test with v4bf16.

---------

Signed-off-by: John Lu <John.Lu at amd.com>



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