Latest  32-bit Java 7 compiled with /LARGEADDRESSAWARE?

While searching around, I didn't have a whole lot of success getting a clear answer, thus I appeal to this forum...
A customer of ours wants to continue using the 32-bit Java 7 VM on 64-bit Windows 2008, but would like to use as large a heap as possible. Has the Windows 32-bit Java 7 VM been compiled with /LARGEADDRESSAWARE? Is there any documentation about this?
Thanks,
-- Jim C

The 32-bit JVM for Windows is not compiled with LARGEADDRESSAWARE, and based upon recent space optimizations with Java 7, is likely not to be anytime soon. In the past, some avoided the 64-bit JVM if they didn't need the extra heap space because it incurred significant memory overhead. That is not necessarily the case now. In fact Oracle recommends using the 64-bit JVM even if your heap requirements don't exceed 4GB. Why?
1. The 64-bit JVM will automatically use 32-bit references on the heap when its size is below 4GB. The command-line switch -XX:+|-UseCompressedOops, available in Java 7, enables/disables this mode and by default is on. Not all internal pointers will be 32-bit, but nonetheless your application running in 64-bit mode should be much smaller than previous 64-bit versions. For a technical description, check out this article:
https://wikis.oracle.com/display/HotSpotInternals/CompressedOops
2. The 64-bit JVM has access to more registers and hence more opportunities for performance optimizations. This helps generate faster code.

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