[DAG] Add m_Ctlz to SDPatternMatch.h

Author: v01dxyz

llvm/include/llvm/CodeGen/SDPatternMatch.h

@@ -751,6 +751,10 @@ template <typename Opnd> inline UnaryOpc_match<Opnd> m_FPToSI(const Opnd &Op) {
   return UnaryOpc_match<Opnd>(ISD::FP_TO_SINT, Op);
 }
 
+template <typename Opnd> inline UnaryOpc_match<Opnd> m_Ctlz(const Opnd &Op) {
+  return UnaryOpc_match<Opnd>(ISD::CTLZ, Op);
+}
+
 // === Constants ===
 struct ConstantInt_match {
   APInt *BindVal;