rjmccall wrote: Is this a target-independent decision? I could certainly imagine a target with a generic AS wanting to specify that indirect return addresses (and maybe even parameters?) should be in that rather than the alloca AS; among other things, it would allow return values to be used to initialize objects in arbitrary memory. In C and C-derived languages, maybe that just avoids a memcpy, but in C++ it avoids a potentially non-trivial move.
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