[llvm-branch-commits] [llvm] [AMDGPU] Extending wave reduction intrinsics for `i64` types - 2 (PR #151309)

[Matt Arsenault via llvm-branch-commits]

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@@ -5475,6 +5550,47 @@ static MachineBasicBlock *lowerWaveReduce(MachineInstr &MI,
                              .addReg(Accumulator->getOperand(0).getReg());
         break;
       }
+      case AMDGPU::S_ADD_U64_PSEUDO:
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arsenm wrote:

This is nearly identical to the existing expansion, need to not duplicate so much 

https://github.com/llvm/llvm-project/pull/151309