[llvm] [VPlan] Implement VPExtendedReduction, VPMulAccumulateReductionRecipe and corresponding vplan transformations. (PR #137746)

[Elvis Wang via llvm-commits]

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@@ -2546,6 +2548,56 @@ void VPReductionEVLRecipe::print(raw_ostream &O, const Twine &Indent,
   }
   O << ")";
 }
+
+void VPExtendedReductionRecipe::print(raw_ostream &O, const Twine &Indent,
+                                      VPSlotTracker &SlotTracker) const {
+  O << Indent << "EXTENDED-REDUCE ";
+  printAsOperand(O, SlotTracker);
+  O << " = ";
+  getChainOp()->printAsOperand(O, SlotTracker);
+  O << " +";
+  O << " reduce."
+    << Instruction::getOpcodeName(
+           RecurrenceDescriptor::getOpcode(getRecurrenceKind()))
+    << " (";
+  getVecOp()->printAsOperand(O, SlotTracker);
+  O << " extended to " << *getResultType();
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ElvisWang123 wrote:

Updated, thanks!

https://github.com/llvm/llvm-project/pull/137746