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A comment on Comparing the Cost of Different Multiple-return Techniques in C. Parent comment

Re:Comparing the Cost of Different Multiple-return Technique... by mikeash on Monday December 23, 2013 @12:01PM (#6955222)
From the ABI perspective, struct returns are multiple return values. ARM64 allows structs to be returned in registers if the struct members are suitable for it.
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Re:Comparing the Cost of Different Multiple-return Technique... by justincormack on Monday December 23, 2013 @12:17PM (#6955305)
I didnt know that. Apparently amd64 lets you return two 64 bit values in registers too, but no more.
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Re:Comparing the Cost of Different Multiple-return Technique... by mprovost on Monday December 23, 2013 @05:11PM (#6956852)
Two is still an incredibly handy feature. I would guess that the most common case for returning multiple values is data and size, like all the functions that return a string and the length of the string.
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Re:Comparing the Cost of Different Multiple-return Technique... by justincormack on Tuesday December 24, 2013 @04:06AM (#6958801)
Yes. Or the value. error style as used by node.js. forcing errors unto the domain gets messy.
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