[all-commits] [llvm/llvm-project] 81396e: [AMDGPU] Generate more swaps (#184164)

[LU-JOHN via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 81396ebc51c40214465111ede745147989c67e48
      https://github.com/llvm/llvm-project/commit/81396ebc51c40214465111ede745147989c67e48
  Author: LU-JOHN <John.Lu at amd.com>
  Date:   2026-03-03 (Tue, 03 Mar 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIShrinkInstructions.cpp
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_global_pointer.ll
    M llvm/test/CodeGen/AMDGPU/v_swap_b16.ll
    M llvm/test/CodeGen/AMDGPU/v_swap_b32.mir
    M llvm/test/CodeGen/AMDGPU/whole-wave-functions.ll

  Log Message:
  -----------
  [AMDGPU] Generate more swaps (#184164)

Generate more swaps from:

```
   mov T, X
   ...
   mov X, Y
   ...
   mov Y, X
```
by being more careful about what use/defs of X, Y, T are allowed in
intervening code and allowing flexibility where the swap is inserted.

---------

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



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