Any plans for x32-abi support on Linux?

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Any plans for x32-abi support on Linux?

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Linux Kernel 3.4 has x32-abi support.
http://sites.google.com/site/x32abi/
It allows 32 bit pointers on 64 bit computers for applications, which do not need to access more than 4GB of RAM (that is most normal desktop applications).
This could bring significant performace gain for many applications - extra registers available on x64 processors, without the size (cache) penalty of 64 bit pointers.

Are there any plans to support this arhitecture in Intel C/C++ compiler?

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