[llvm] [VPlan] Compute induction end values in VPlan. (PR #112145)

[Florian Hahn via llvm-commits]

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@@ -2613,32 +2599,18 @@ void InnerLoopVectorizer::createVectorLoopSkeleton(StringRef Prefix) {
                  nullptr, Twine(Prefix) + "scalar.ph");
 }
 
-void InnerLoopVectorizer::createInductionResumeVPValue(
-    VPIRInstruction *InductionPhiRI, const InductionDescriptor &II, Value *Step,
-    ArrayRef<BasicBlock *> BypassBlocks, VPBuilder &ScalarPHBuilder,
+void InnerLoopVectorizer::createInductionBypassValue(
+    PHINode *OrigPhi, const InductionDescriptor &II, Value *Step,
     Value *MainVectorTripCount) {
-  // TODO: Move to LVP or general VPlan construction, once no IR values are
-  // generated.
-  auto *OrigPhi = cast<PHINode>(&InductionPhiRI->getInstruction());
-  Value *VectorTripCount = getOrCreateVectorTripCount(LoopVectorPreHeader);
-  assert(VectorTripCount && "Expected valid arguments");
-
   Instruction *OldInduction = Legal->getPrimaryInduction();
-  // For the primary induction the end values are known.
-  Value *EndValue = VectorTripCount;
   Value *EndValueFromAdditionalBypass = MainVectorTripCount;
-  // Otherwise compute them accordingly.
   if (OrigPhi != OldInduction) {
     IRBuilder<> B(LoopVectorPreHeader->getTerminator());
 
     // Fast-math-flags propagate from the original induction instruction.
     if (isa_and_nonnull<FPMathOperator>(II.getInductionBinOp()))
       B.setFastMathFlags(II.getInductionBinOp()->getFastMathFlags());
 
-    EndValue = emitTransformedIndex(B, VectorTripCount, II.getStartValue(),
-                                    Step, II.getKind(), II.getInductionBinOp());
-    EndValue->setName("ind.end");
-
     // Compute the end value for the additional bypass (if applicable).
     if (MainVectorTripCount) {
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fhahn wrote:

Done thanks

https://github.com/llvm/llvm-project/pull/112145