[LV] Check if the VF is scalar by VFRange in handleUncountableEarlyExit.

llvm/lib/Transforms/Vectorize/LoopVectorize.cpp

@@ -9744,7 +9744,7 @@ LoopVectorizationPlanner::tryToBuildVPlanWithVPRecipes(VFRange &Range) {
           Legal->getUncountableEarlyExitingBlock()) {
     VPlanTransforms::runPass(VPlanTransforms::handleUncountableEarlyExit, *Plan,
                              *PSE.getSE(), OrigLoop, UncountableExitingBlock,
-                             RecipeBuilder);
+                             RecipeBuilder, Range);
   }
   DenseMap<VPValue *, VPValue *> IVEndValues;
   addScalarResumePhis(RecipeBuilder, *Plan, IVEndValues);

llvm/lib/Transforms/Vectorize/VPlanTransforms.cpp

@@ -17,6 +17,7 @@
 #include "VPlanAnalysis.h"
 #include "VPlanCFG.h"
 #include "VPlanDominatorTree.h"
+#include "VPlanHelpers.h"
 #include "VPlanPatternMatch.h"
 #include "VPlanUtils.h"
 #include "VPlanVerifier.h"
@@ -2380,13 +2381,19 @@ void VPlanTransforms::convertToConcreteRecipes(VPlan &Plan) {
 
 void VPlanTransforms::handleUncountableEarlyExit(
     VPlan &Plan, ScalarEvolution &SE, Loop *OrigLoop,
-    BasicBlock *UncountableExitingBlock, VPRecipeBuilder &RecipeBuilder) {
+    BasicBlock *UncountableExitingBlock, VPRecipeBuilder &RecipeBuilder,
+    VFRange &Range) {
   VPRegionBlock *LoopRegion = Plan.getVectorLoopRegion();
   auto *LatchVPBB = cast<VPBasicBlock>(LoopRegion->getExiting());
   VPBuilder Builder(LatchVPBB->getTerminator());
   auto *MiddleVPBB = Plan.getMiddleBlock();
   VPValue *IsEarlyExitTaken = nullptr;
 
+  // Clamp the range that make sure we insert extractElement for incoming value
+  // correctly.
+  bool IsScalarVF = LoopVectorizationPlanner::getDecisionAndClampRange(
+      [&](ElementCount VF) { return VF.isScalar(); }, Range);
+
   // Process the uncountable exiting block. Update IsEarlyExitTaken, which
   // tracks if the uncountable early exit has been taken. Also split the middle
   // block and have it conditionally branch to the early exit block if
@@ -2436,7 +2443,7 @@ void VPlanTransforms::handleUncountableEarlyExit(
       ExitIRI->extractLastLaneOfOperand(MiddleBuilder);
     }
     // Add the incoming value from the early exit.
-    if (!IncomingFromEarlyExit->isLiveIn() && !Plan.hasScalarVFOnly()) {
+    if (!IncomingFromEarlyExit->isLiveIn() && !IsScalarVF) {
       VPValue *FirstActiveLane = EarlyExitB.createNaryOp(
           VPInstruction::FirstActiveLane, {EarlyExitTakenCond}, nullptr,
           "first.active.lane");

llvm/lib/Transforms/Vectorize/VPlanTransforms.h

@@ -28,6 +28,7 @@ class PredicatedScalarEvolution;
 class TargetLibraryInfo;
 class VPBuilder;
 class VPRecipeBuilder;
+class VFRange;
 
 extern cl::opt<bool> VerifyEachVPlan;
 
@@ -174,7 +175,8 @@ struct VPlanTransforms {
   static void handleUncountableEarlyExit(VPlan &Plan, ScalarEvolution &SE,
                                          Loop *OrigLoop,
                                          BasicBlock *UncountableExitingBlock,
-                                         VPRecipeBuilder &RecipeBuilder);
+                                         VPRecipeBuilder &RecipeBuilder,
+                                         VFRange &Range);
 
   /// Lower abstract recipes to concrete ones, that can be codegen'd.
   static void convertToConcreteRecipes(VPlan &Plan);