[llvm] [VPlan] Update scalar induction resume values in VPlan. (PR #110577)

[Florian Hahn via llvm-commits]

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@@ -2652,26 +2669,33 @@ static Value *getExpandedStep(const InductionDescriptor &ID,
   return I->second;
 }
 
-void InnerLoopVectorizer::createInductionResumeValues(
+void InnerLoopVectorizer::createInductionResumeVPValues(
     const SCEV2ValueTy &ExpandedSCEVs,
     std::pair<BasicBlock *, Value *> AdditionalBypass) {
   assert(((AdditionalBypass.first && AdditionalBypass.second) ||
           (!AdditionalBypass.first && !AdditionalBypass.second)) &&
          "Inconsistent information about additional bypass.");
   // We are going to resume the execution of the scalar loop.
-  // Go over all of the induction variables that we found and fix the
-  // PHIs that are left in the scalar version of the loop.
-  // The starting values of PHI nodes depend on the counter of the last
-  // iteration in the vectorized loop.
-  // If we come from a bypass edge then we need to start from the original
-  // start value.
-  for (const auto &InductionEntry : Legal->getInductionVars()) {
-    PHINode *OrigPhi = InductionEntry.first;
-    const InductionDescriptor &II = InductionEntry.second;
-    PHINode *BCResumeVal = createInductionResumeValue(
-        OrigPhi, II, getExpandedStep(II, ExpandedSCEVs), LoopBypassBlocks,
-        AdditionalBypass);
-    OrigPhi->setIncomingValueForBlock(LoopScalarPreHeader, BCResumeVal);
+  // Go over all of the induction variable PHIs of the scalar loop header and
+  // fix their starting values, which depend on the counter of the last
+  // iteration of the vectorized loop. The starting values of PHI nodes depend
+  // on the counter of the last iteration in the vectorized loop.  If we come
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fhahn wrote:

Updated, thanks!

https://github.com/llvm/llvm-project/pull/110577