[llvm] [IR][NFC] Introduce Constant::containsMatchingVectorElement and corresponding matcher (PR #200502)

[Sean Clarke via llvm-commits]

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@@ -351,11 +351,20 @@ bool Constant::containsConstantExpression() const {
   if (isa<ConstantInt>(this) || isa<ConstantFP>(this))
     return false;
 
-  if (auto *VTy = dyn_cast<FixedVectorType>(getType())) {
-    for (unsigned i = 0, e = VTy->getNumElements(); i != e; ++i)
-      if (isa<ConstantExpr>(getAggregateElement(i)))
-        return true;
+  return match(this, m_ContainsMatchingVectorElement(m_Isa<ConstantExpr>()));
+}
+
+bool Constant::containsMatchingVectorElement(
+    function_ref<bool(Constant *)> PredFn) const {
+  if (auto *FVTy = dyn_cast<FixedVectorType>(getType())) {
+    unsigned NumElts = FVTy->getNumElements();
+    for (unsigned I = 0; I != NumElts; ++I) {
+      if (Constant *Elem = getAggregateElement(I))
+        if (PredFn(Elem))
+          return true;
+    }
   }
+
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xarkenz wrote:

I think it was mostly a byproduct of how the diff is trying to line up the end of containsConstantExpression with the new function. Can remove if desired.

https://github.com/llvm/llvm-project/pull/200502