C++: Factor out the property provider which hides instructions and operands out of the 'LocalFlowPropertyProvider' class and into a separate class.

Author: MathiasVP

cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/PrintDataFlowRelevantIR.qll

@@ -0,0 +1,12 @@
+private import cpp
+private import semmle.code.cpp.ir.IR
+private import SsaInternals as Ssa
+
+/**
+ * Property provider that hides all instructions and operands that are not relevant for IR dataflow.
+ */
+class DataFlowRelevantIRPropertyProvider extends IRPropertyProvider {
+  override predicate shouldPrintOperand(Operand operand) { not Ssa::ignoreOperand(operand) }
+
+  override predicate shouldPrintInstruction(Instruction instr) { not Ssa::ignoreInstruction(instr) }
+}

cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/PrintIRLocalFlow.qll

@@ -59,8 +59,4 @@ class LocalFlowPropertyProvider extends IRPropertyProvider {
       result = getNodeProperty(node, key)
     )
   }
-
-  override predicate shouldPrintOperand(Operand operand) { not Ssa::ignoreOperand(operand) }
-
-  override predicate shouldPrintInstruction(Instruction instr) { not Ssa::ignoreInstruction(instr) }
 }