Converting to 64-bit

[arpit jain]

Hiiiiiii

I have a compiler for Fortran90 language that supports
32-bit architecture.
I want to convert that compiler so that it can support
both 32-bit and 64-bit architecture(say Opteron).

What issues I need to take in consideration or what
changes I should do in source code (Froint End or Back
End)?

Thanks & Regards,
Arpit


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