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Re:Three Optimization Tips for C++ by haberman on Wednesday May 07, 2014 @04:51PM (#7712584)
There is the x32 ABI -- not sure if this is in wide use or not: http://en.wikipedia.org/wiki/X32_ABI
Re:Three Optimization Tips for C++ by sltkr on Wednesday May 07, 2014 @05:47PM (#7712835)
x32 is a great idea, but it was introduced too late (around 2012, I believe) and of course it is not widely used.