[all-commits] [llvm/llvm-project] acff04: [NVPTX] Add max/minimumnum to ISel (#155804)

[Lewis Crawford via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: acff04955defe719822287e9b854acaa07f1391c
      https://github.com/llvm/llvm-project/commit/acff04955defe719822287e9b854acaa07f1391c
  Author: Lewis Crawford <lcrawford at nvidia.com>
  Date:   2025-08-29 (Fri, 29 Aug 2025)

  Changed paths:
    M llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp
    M llvm/lib/Target/NVPTX/NVPTXInstrInfo.td
    M llvm/test/CodeGen/NVPTX/math-intrins.ll

  Log Message:
  -----------
  [NVPTX] Add max/minimumnum to ISel (#155804)

Add direct support for the LLVM `maximumnum` and `minimumnum`
intrinsics for NVPTX, rather than lowering them to a sequence of
compare + select instructions.

The `maximumnum` and `minimumnum` intrinsics map directly to PTX
`max`/`min` instructions.

In future, the LLVM `maxnum`/`minnum` intrinsics might need some fix-ups
for sNaN handling added, but currently both `llvm.maxnum` and
`llvm.maximumnum` will map directly to PTX `max` instructions.



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