Browser JITs don't just recompile things on page load. They have to add inline cache entries whenever the existing IC is missed. Now in practice ICs usually h

Browser JITs don't just recompile things on page load. They have to add inline cache entries whenever the existing IC is missed. Now in practice ICs usually hit (that's the point!) so once you've been running for a bit things should hopefully not need more recompiling. Which is a significant difference from the situation you describe.