btw, Google Chrome doesn't have a 64-bit version* for Windows. The Chrome team also disabled PGO on Windows because of the same MSVC linker limitations that Mozilla hit.
* Edit: oops, I corrected a typo where I wrote "32-bit build".
Yes, though that is far less a pain in the ass since they use multiple processes. I can't count the number of times I have run out of memory with firefox on windows despite having far more than firefox was using.
* Edit: oops, I corrected a typo where I wrote "32-bit build".