[llvm] [VPlan] Replace VPRegionBlock with explicit CFG before execute (NFCI). (PR #117506)

via llvm-commits llvm-commits at lists.llvm.org
Tue May 20 13:45:22 PDT 2025


================
@@ -424,13 +450,19 @@ void VPBasicBlock::connectToPredecessors(VPTransformState &State) {
   if (ParentLoop && !State.LI->getLoopFor(NewBB))
     ParentLoop->addBasicBlockToLoop(NewBB, *State.LI);
 
+  auto Preds = to_vector(getHierarchicalPredecessors());
+  if (VPBlockUtils::isHeader(this, State.VPDT)) {
+    // There's no block for the latch yet, connect to the preheader only.
+    Preds = {Preds[0]};
+  }
----------------
ayalz wrote:

Can alternatively do:
```suggestion
    Preds = getPredecessors()[0];
  } else {
    Preds = to_vector(getPredecessors());
  }
```

https://github.com/llvm/llvm-project/pull/117506


More information about the llvm-commits mailing list