Hi; I was reading about the x86-64 calling convention and I found out that apparently for returns of smaller-than-register types the high parts may contain garbage: https://stackoverflow.com/questions/36706721/is-a-sign-or-zero-extension-required-when-adding-a-32bit-offset-to-a-pointer-for/36760539#36760539
However, for TCG helper functions, although we allow the helper macro to say that the return type is 'f16', in helper-head.h we seem to just alias f16 as i32, and in dh_sizemask() we only record "is this 64 bits" and "is this signed". Am I missing the place where we zero-extend the value we get back from the helper so that it's the right thing in TCG's i32 ? thanks -- PMM
