[VPlan] Strip entire NDEBUG section

Author: artagnon

llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

@@ -1623,30 +1623,8 @@ void VPlanTransforms::truncateToMinimalBitwidths(
       // type. Skip those here, after incrementing NumProcessedRecipes. Also
       // skip casts which do not need to be handled explicitly here, as
       // redundant casts will be removed during recipe simplification.
-      if (isa<VPReplicateRecipe, VPWidenCastRecipe>(&R)) {
-#ifndef NDEBUG
-        // If any of the operands is a live-in and not used by VPWidenRecipe or
-        // VPWidenSelectRecipe, but in MinBWs, make sure it is counted as
-        // processed as well. When MinBWs is currently constructed, there is no
-        // information about whether recipes are widened or replicated and in
-        // case they are reciplicated the operands are not truncated. Counting
-        // them them here ensures we do not miss any recipes in MinBWs.
-        // TODO: Remove once the analysis is done on VPlan.
-        for (VPValue *Op : R.operands()) {
-          if (!Op->isLiveIn())
-            continue;
-          auto *UV = dyn_cast_or_null<Instruction>(Op->getUnderlyingValue());
-          if (UV && MinBWs.contains(UV) && !ProcessedTruncs.contains(Op) &&
-              none_of(Op->users(),
-                      IsaPred<VPWidenRecipe, VPWidenSelectRecipe>)) {
-            // Add an entry to ProcessedTruncs to avoid counting the same
-            // operand multiple times.
-            ProcessedTruncs[Op] = nullptr;
-          }
-        }
-#endif
+      if (isa<VPReplicateRecipe, VPWidenCastRecipe>(&R))
         continue;
-      }
 
       Type *OldResTy = TypeInfo.inferScalarType(ResultVPV);
       unsigned OldResSizeInBits = OldResTy->getScalarSizeInBits();