Print source location for class fields

compiler/teal0/backend/IRGen.jrag

@@ -473,6 +473,11 @@ aspect IRGen {
 		ctx.endBB();
 	}
 
-	syn IRVar VarDecl.genIR() = new IRVar(getIdDecl().genIR(), variableType().genIRTypeRef());
+	syn IRVar VarDecl.genIR() {
+		IRVar var = new IRVar(getIdDecl().genIR(), variableType().genIRTypeRef());
+		var.setSourceLocation(sourceLocation());
+		return var;
+	}
+
 	syn IRName IdDecl.genIR() = new IRName(getIdentifier());
 }

ir/teal0/ast/IRPrint.jrag

@@ -105,6 +105,10 @@ aspect IRPrint {
 		getIRName().print(out);
 		out.print(" : ");
 		getIRTypeRef().print(out);
+		if (IRProgram.printSourceLocations) {
+			out.print("\t");
+			getSourceLocation().print(out);
+		}
 	}
 
 	public void IRCodeBB.print(PrintStream out) {