Class file version 52:0 allows REF_invokeStatic and REF_invokeSpecial to refer both Method and InterfaceMethod CP entries.
Jasm always creates REF_invokeStatic and REF_invokeSpecial refering Method, even if an explicit constant InterfaceMethod is created.
Example:
Source:
public interface Test version 52:0 {
    const #1 = InterfaceMethod m:"()V";
    const #2 = MethodHandle REF_invokeSpecial:#1;
}

Commands:
$ java -jar asmtools.jar jasm Test.jasm
$ java -jar asmtools.jar jdec Test.class

Output (note that #2 refers #7 instead of #1 and #7 refers #1 as the method name):
class Test {
  0xCAFEBABE;
  0; // minor version
  52; // version
  [] { // Constant Pool
    ; // first element is empty
    InterfaceMethod #11 #3; // #1
    MethodHandle 7b #7; // #2
    NameAndType #10 #9; // #3
    Utf8 "Test.jasm"; // #4
    class #6; // #5
    Utf8 "java/lang/Object"; // #6
    Method #11 #1; // #7
    Utf8 "SourceFile"; // #8
    Utf8 "()V"; // #9
    Utf8 "m"; // #10
    class #12; // #11
    Utf8 "Test"; // #12
  } // Constant Pool
....................
} // end class Test5