On 2/1/13 10:52 AM, Jean-Marc Desperrier wrote:
The trouble with going 64-bits is that the jit would then see some
significant regression, for cache pressure/instruction set related
reasons

Do you have numbers here?

I'm aware of some regressions for things that involve traversing DOM trees in a microbenchmark with 64-bit builds, but not for the JIT per se. Well, apart from us having focused a bit more on 32-bit JIT perf than 64-bit JIT perf, I guess.

-Boris
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