[all-commits] [llvm/llvm-project] 2e2bbc: AMDGPU/GlobalISel: Start legalizing minimumnum and...

[Matt Arsenault via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2e2bbcacf813de52f6e7f48dea67e26de1f1f99e
      https://github.com/llvm/llvm-project/commit/2e2bbcacf813de52f6e7f48dea67e26de1f1f99e
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-05-21 (Wed, 21 May 2025)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/test/CodeGen/AMDGPU/maximumnum.ll
    M llvm/test/CodeGen/AMDGPU/minimumnum.ll

  Log Message:
  -----------
  AMDGPU/GlobalISel: Start legalizing minimumnum and maximumnum (#140900)

This is the bare minimum to get the intrinsic to compile for AMDGPU,
and it's not optimal. We need to follow along closer with the existing
G_FMINNUM/G_FMAXNUM with custom lowering to handle the IEEE=0 case
better.

Just re-use the existing lowering for the old semantics for
G_FMINNUM/G_FMAXNUM. This does not change G_FMINNUM/G_FMAXNUM's
treatment,
nor try to handle the general expansion without an underlying min/max
variant (or with G_FMINIMUM/G_FMAXIMUM).



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