[all-commits] [llvm/llvm-project] 0fcfc1: [AMDGPU] Fold a constant add/sub into the sudot4/s...

[Harrison Hao via All-commits]

  Branch: refs/heads/users/harrisonGPU/sudot-constant-fold-instcombine
  Home:   https://github.com/llvm/llvm-project
  Commit: 0fcfc1cfda5ad1bfbf5a3da80319f077630b9912
      https://github.com/llvm/llvm-project/commit/0fcfc1cfda5ad1bfbf5a3da80319f077630b9912
  Author: Harrison Hao <tsworld1314 at gmail.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp
    M llvm/test/Transforms/InstCombine/AMDGPU/llvm.amdgcn.sudot.ll

  Log Message:
  -----------
  [AMDGPU] Fold a constant add/sub into the sudot4/sudot8 accumulator

Fold a constant add into the accumulator operand of sudot4 and sudot8 when
clamping is disabled:
```
  sudot(a, b, C1, false) + C2 -> sudot(a, b, C1 + C2, false)
```
Subtraction by a constant is canonicalized to addition of its negation.


  Commit: bc2e715dacb6cccac9f21a830ba53b6b11ba59b5
      https://github.com/llvm/llvm-project/commit/bc2e715dacb6cccac9f21a830ba53b6b11ba59b5
  Author: Harrison Hao <tsworld1314 at gmail.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp

  Log Message:
  -----------
  Update for comments


  Commit: db16db9eadaf17baa5e47b4b798bd61269cc92fc
      https://github.com/llvm/llvm-project/commit/db16db9eadaf17baa5e47b4b798bd61269cc92fc
  Author: Harrison Hao <tsworld1314 at gmail.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUInstCombineIntrinsic.cpp

  Log Message:
  -----------
  Update again


Compare: https://github.com/llvm/llvm-project/compare/db9bb884af74...db16db9eadaf

To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications