Class Based XP: Not in OE, and not in BX, BECMI, nor Cyclopedia. I don't recall it being in AD&D 1e, either. The only edition I recall it in is AD&D 2E. I checked BX, BECMI, and Cyclopedia.
Cyclopedia does add a 5% of width of current level as a bonus for good RP and a few other things... but that's not class-based. THe only class based XP in OE, BX, BECMI, Cyclopedia are for Prime Requisites being high... but all classes have bonuses for prime requisites.
I'm not bothering to check AD&D 1E, since others here know it better.
BX gives XP for defeating foes and acquiring treasure.
BECMI gives XP for monsters defeated, treasure acquired, landholding, leading wars, leading trade expeditions. Cyclopedia adds a number of "5% of the width of your current level" bonuses, but again, not class based