[LoopUtils] Pass start value directly to createAnyOfReduction (NFC).

Now that there is only a single AnyOf recurrence kind, simply pass the
start value instead of the full recurrence descriptor, to tighten the
interface.

Author: fhahn

llvm/include/llvm/Transforms/Utils/LoopUtils.h

@@ -413,11 +413,9 @@ Value *createSimpleReduction(IRBuilderBase &B, Value *Src,
 /// reduction.
 Value *createSimpleReduction(VectorBuilder &VB, Value *Src, RecurKind RdxKind);
 
-/// Create a reduction of the given vector \p Src for a reduction of the
-/// kind RecurKind::IAnyOf or RecurKind::FAnyOf. The reduction operation is
-/// described by \p Desc.
-Value *createAnyOfReduction(IRBuilderBase &B, Value *Src,
-                            const RecurrenceDescriptor &Desc,
+/// Create a reduction of the given vector \p Src for a reduction of kind
+/// RecurKind::AnyOf. The start value of the reduction is \p InitVal.
+Value *createAnyOfReduction(IRBuilderBase &B, Value *Src, Value *InitVal,
                             PHINode *OrigPhi);
 
 /// Create a reduction of the given vector \p Src for a reduction of the

llvm/lib/Transforms/Utils/LoopUtils.cpp

@@ -1207,12 +1207,7 @@ Value *llvm::getShuffleReduction(IRBuilderBase &Builder, Value *Src,
 }
 
 Value *llvm::createAnyOfReduction(IRBuilderBase &Builder, Value *Src,
-                                  const RecurrenceDescriptor &Desc,
-                                  PHINode *OrigPhi) {
-  assert(
-      RecurrenceDescriptor::isAnyOfRecurrenceKind(Desc.getRecurrenceKind()) &&
-      "Unexpected reduction kind");
-  Value *InitVal = Desc.getRecurrenceStartValue();
+                                  Value *InitVal, PHINode *OrigPhi) {
   Value *NewVal = nullptr;
 
   // First use the original phi to determine the new value we're trying to

llvm/lib/Transforms/Vectorize/VPlanRecipes.cpp

@@ -688,7 +688,8 @@ Value *VPInstruction::generate(VPTransformState &State) {
       // descriptor.
       if (RecurrenceDescriptor::isAnyOfRecurrenceKind(RK))
         ReducedPartRdx =
-            createAnyOfReduction(Builder, ReducedPartRdx, RdxDesc, OrigPhi);
+            createAnyOfReduction(Builder, ReducedPartRdx,
+                                 RdxDesc.getRecurrenceStartValue(), OrigPhi);
       else
         ReducedPartRdx = createSimpleReduction(Builder, ReducedPartRdx, RK);