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

via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Tue Jan 27 22:53:21 PST 2026


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@@ -5743,28 +5751,69 @@ static MachineBasicBlock *lowerWaveReduce(MachineInstr &MI,
         break;
       }
       case AMDGPU::V_ADD_F32_e64:
-      case AMDGPU::V_SUB_F32_e64: {
-        Register ActiveLanesVreg =
-            MRI.createVirtualRegister(&AMDGPU::VGPR_32RegClass);
-        Register DstVreg = MRI.createVirtualRegister(&AMDGPU::VGPR_32RegClass);
+      case AMDGPU::V_ADD_F64_e64:
+      case AMDGPU::V_SUB_F32_e64:
+      case AMDGPU::WAVE_REDUCE_FSUB_PSEUDO_F64: {
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easyonaadit wrote:

Right got it.

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


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