[llvm] 620a515 - [VPlan] Add message to assert in HCFGBuilder (NFC).

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2025-02-17T21:36:53+01:00
New Revision: 620a51535ba7934a6f6bca5b74ff75946e886d87

URL: https://github.com/llvm/llvm-project/commit/620a51535ba7934a6f6bca5b74ff75946e886d87
DIFF: https://github.com/llvm/llvm-project/commit/620a51535ba7934a6f6bca5b74ff75946e886d87.diff

LOG: [VPlan] Add message to assert in HCFGBuilder (NFC).

Suggested in https://github.com/llvm/llvm-project/pull/126388.

Added: 
    

Modified: 
    llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp b/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
index 33a367a0b65c1..70d8575ba82c5 100644
--- a/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
+++ b/llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
@@ -134,7 +134,8 @@ void PlainCFGBuilder::fixPhiNodes() {
     if (isHeaderBB(Phi->getParent(), L)) {
       // For header phis, make sure the incoming value from the loop
       // predecessor is the first operand of the recipe.
-      assert(Phi->getNumOperands() == 2);
+      assert(Phi->getNumOperands() == 2 &&
+             "header phi must have exactly 2 operands");
       BasicBlock *LoopPred = L->getLoopPredecessor();
       VPPhi->addOperand(
           getOrCreateVPOperand(Phi->getIncomingValueForBlock(LoopPred)));