What kind of job/role does a person with 3 years of software development experience and XLRI HRM land up in?

Anyone who completes the HRM program from XLRI gets the same facilities as any other who has completed the program. Excluding the students who have taken year drop(s), many of your peers will have the same background.

• If you have scored high in your XAT/CAT nothing will stop the administration from granting admission to the candidate. The administration chooses to overlook the gaps in your applications if the scores meet the eligibility criteria. 
• If you keep your grades high, you will definitely be called up for interviews. Then it is up to the interviewers if they want you to explain your year gaps.
• Students in XLRI HRM can get placed in a variety of roles. Many of these roles include maintenance, where the processes are already spelled out. 
• Companies often come up with ‘leadership development programs where they make you cycle through various HR processes and profiles before assigning one that fits you.

On the other hand, there are companies that specialize in HR consulting profiles like Hay, Hewitt, EY, KPMG, etc where you will have to engage clients in more HR work related to design and less work of administration/maintenance.