[llvm] [LV] Provide utility routine to find uncounted exit recipes (PR #152530)

[Graham Hunter via llvm-commits]

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@@ -687,6 +687,37 @@ m_Intrinsic(const T0 &Op0, const T1 &Op1, const T2 &Op2, const T3 &Op3) {
   return m_CombineAnd(m_Intrinsic<IntrID>(Op0, Op1, Op2), m_Argument<3>(Op3));
 }
 
+struct loop_invariant_vpvalue {
+  template <typename ITy> bool match(ITy *V) const {
+    VPValue *Val = dyn_cast<VPValue>(V);
+    return Val && Val->isDefinedOutsideLoopRegions();
+  }
+};
+
+inline loop_invariant_vpvalue m_LoopInvVPValue() {
+  return loop_invariant_vpvalue();
+}
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huntergr-arm wrote:

Changed to m_LiveIn, seems to work fine.

https://github.com/llvm/llvm-project/pull/152530