[llvm] [mlir] [clang] [libcxx] [clang-tools-extra] [flang] [LV] Improve AnyOf reduction codegen. (PR #78304)

[Florian Hahn via cfe-commits]

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@@ -453,16 +453,17 @@ Value *VPInstruction::generateInstruction(VPTransformState &State,
         else if (RecurrenceDescriptor::isAnyOfRecurrenceKind(RK)) {
           TrackingVH<Value> ReductionStartValue =
               RdxDesc.getRecurrenceStartValue();
-          ReducedPartRdx = createAnyOfOp(Builder, ReductionStartValue, RK,
-                                         ReducedPartRdx, RdxPart);
+          ReducedPartRdx = Builder.CreateOr(ReducedPartRdx, RdxPart);
         } else
           ReducedPartRdx = createMinMaxOp(Builder, RK, ReducedPartRdx, RdxPart);
       }
     }
 
     // Create the reduction after the loop. Note that inloop reductions create
     // the target reduction in the loop using a Reduction recipe.
-    if (State.VF.isVector() && !PhiR->isInLoop()) {
+    if ((State.VF.isVector() ||
+         RecurrenceDescriptor::isAnyOfRecurrenceKind(RK)) &&
+        !PhiR->isInLoop()) {
       ReducedPartRdx =
           createTargetReduction(Builder, RdxDesc, ReducedPartRdx, OrigPhi);
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fhahn wrote:

Yes, but this will need a bit of additional refactoring, in particular how createAndCollectMergePhiForReduction looks up the reduction result value and when ComputeReductionResult VPInstructions are created.



https://github.com/llvm/llvm-project/pull/78304