Apply llvm fix for assertion/crash building math/vtk

Merge commit 307ace7f20d5 from llvm git (by David Sherwood):

  [LoopVectorize] Ensure the VPReductionRecipe is placed after all it's inputs

  When vectorising ordered reductions we call a function
  LoopVectorizationPlanner::adjustRecipesForReductions to replace the
  existing VPWidenRecipe for the fadd instruction with a new
  VPReductionRecipe. We attempt to insert the new recipe in the same
  place, but this is wrong because createBlockInMask may have
  generated new recipes that VPReductionRecipe now depends upon. I
  have changed the insertion code to append the recipe to the
  VPBasicBlock instead.

  Added a new RUN with tail-folding enabled to the existing test:

    Transforms/LoopVectorize/AArch64/scalable-strict-fadd.ll

  Differential Revision: https://reviews.llvm.org/D129550

Reported by:	yuri
PR:		264834
MFC after:	3 days

contrib/llvm-project/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -9453,7 +9453,9 @@ void LoopVectorizationPlanner::adjustRecipesForReductions(
       WidenRecipe->getVPSingleValue()->replaceAllUsesWith(RedRecipe);
       Plan->removeVPValueFor(R);
       Plan->addVPValue(R, RedRecipe);
-      WidenRecipe->getParent()->insert(RedRecipe, WidenRecipe->getIterator());
+      // Append the recipe to the end of the VPBasicBlock because we need to
+      // ensure that it comes after all of it's inputs, including CondOp.
+      WidenRecipe->getParent()->appendRecipe(RedRecipe);
       WidenRecipe->getVPSingleValue()->replaceAllUsesWith(RedRecipe);
       WidenRecipe->eraseFromParent();