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

Florian Hahn via llvm-commits llvm-commits at lists.llvm.org
Sun Dec 1 14:06:53 PST 2024


================
@@ -2652,26 +2658,31 @@ 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
+  // Go over all of the induction variables in the scalar header 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.
----------------
fhahn wrote:

Updated, thanks

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


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