[llvm] [LV] Introduce m_One and improve (0|1)-match (NFC) (PR #157419)

[Mel Chen via llvm-commits]

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@@ -186,7 +186,7 @@ bool EVLIndVarSimplifyImpl::run(Loop &L) {
   Value *TC = nullptr;
   auto IntrinsicMatch = m_Intrinsic<Intrinsic::experimental_get_vector_length>(
       m_Value(RemTC), m_SpecificInt(VF),
-      /*Scalable=*/m_SpecificInt(1));
+      /*Scalable=*/m_One());
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Mel-Chen wrote:

This isn’t using VPlanPatternMatch, so it should be unrelated to this patch?

https://github.com/llvm/llvm-project/pull/157419