[llvm] [VPlan] Use InstSimplifyFolder in tryToConstantFold (PR #141222)

[Florian Hahn via llvm-commits]

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@@ -939,8 +939,9 @@ static void recursivelyDeleteDeadRecipes(VPValue *V) {
   }
 }
 
-/// Try to fold \p R using TargetFolder to a constant. Will succeed and return a
-/// non-nullptr Value for a handled \p Opcode if all \p Operands are constant.
+/// Try to fold \p R using InstSimplifyFolder to a constant. Will succeed and
+/// return a non-nullptr Value for a handled \p Opcode if \p Operands are
+/// foldable.
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fhahn wrote:

Comment at line 997 should be updated, this now doesn't just fold constant, but folds recipes with all live-in operands to other live-ins.

https://github.com/llvm/llvm-project/pull/141222