[llvm] [SLP] Fix PoisonValue in the argument VL of setOperand. (PR #118949)

[Han-Kuan Chen via llvm-commits]

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@@ -2542,13 +2541,11 @@ class BoUpSLP {
 
   public:
     /// Initialize with all the operands of the instruction vector \p RootVL.
-    VLOperands(ArrayRef<Value *> RootVL, const BoUpSLP &R)
+    VLOperands(ArrayRef<Value *> RootVL, Instruction *VL0, const BoUpSLP &R)
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HanKuanChen wrote:

If we need to put VL0 into TreeEntry, I suggest we open the original PR (https://github.com/llvm/llvm-project/pull/113880#issuecomment-2523263864) and review there.

https://github.com/llvm/llvm-project/pull/118949