On 2/1/13 10:52 AM, Jean-Marc Desperrier wrote:
Ehsan Akhgari a écrit :
I don't have a lot of experience with mingw32, but to the best of my
knowledge, it's based on older versions of gcc (4.6?), and lacks 64-bit
support
Ehsan, did you forget that there would be no memory problem with
64-bits MSVC PGO builds ?
The trouble with going 64-bits is that the jit would then see some
significant regression, for cache pressure/instruction set related
reasons (ie gcc won't do it any better, probably worse)
This would be great, except for the fact that Microsoft's 64-bit
toolchain is even buggier. You cannot currently do a 64-bit PGO build of
Firefox without hitting an internal compiler error:
https://connect.microsoft.com/VisualStudio/feedback/details/686117
-Ted
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