[llvm] [VPlan] Introduce ExitPhi VPInstruction, use to create phi for FOR. (PR #94760)

[Florian Hahn via llvm-commits]

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@@ -193,11 +193,12 @@ void VPLiveOut::fixPhi(VPlan &Plan, VPTransformState &State) {
   VPValue *ExitValue = getOperand(0);
   if (vputils::isUniformAfterVectorization(ExitValue))
     Lane = VPLane::getFirstLane();
-  VPBasicBlock *MiddleVPBB =
-      cast<VPBasicBlock>(Plan.getVectorLoopRegion()->getSingleSuccessor());
-  BasicBlock *MiddleBB = State.CFG.VPBB2IRBB[MiddleVPBB];
-  Phi->addIncoming(State.get(ExitValue, VPIteration(State.UF - 1, Lane)),
-                   MiddleBB);
+  BasicBlock *PredBB = State.CFG.VPBB2IRBB[Pred];
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fhahn wrote:

Thanks, split off to c16e37867ca838621ff9233f4d1a58207c3e99db

https://github.com/llvm/llvm-project/pull/94760