[llvm-branch-commits] [llvm] [AMDGPU] Add wave reduce intrinsics for double types - 2 (PR #170812)

[Matt Arsenault via llvm-branch-commits]

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@@ -5825,6 +5874,8 @@ static MachineBasicBlock *lowerWaveReduce(MachineInstr &MI,
           .addImm(IdentityValue);
     } else {
       uint64_t IdentityValue = getIdentityValueFor64BitWaveReduction(Opc);
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arsenm wrote:

Maybe should change getIdentityValueFor64BitWaveReduction to work on the original reduction opcode 

https://github.com/llvm/llvm-project/pull/170812