[llvm] [VPlan] Construct immutable VPIRBBs for exit blocks at construction(NFC) (PR #128374)

[Florian Hahn via llvm-commits]

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@@ -984,6 +989,12 @@ void VPlan::prepareToExecute(Value *TripCountV, Value *VectorTripCountV,
   }
 }
 
+VPIRBasicBlock *VPlan::getExitBlock(BasicBlock *IRBB) const {
+  return *find_if(getExitBlocks(), [IRBB](const VPIRBasicBlock *VPIRBB) {
+    return VPIRBB->getIRBasicBlock() == IRBB;
+  });
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fhahn wrote:

Left as vector for now, as getExitBlock should not be needed soonish and be replaced by connecting the blocks during initial VPlan construction.


https://github.com/llvm/llvm-project/pull/128374