On 07/06/2009 09:34 AM, Lassi Tuura wrote:
Hey,
This could also be a dynamic stack realignment (for support of
vectorization). I didn't think x86-64 needed that, though.
Basically I guess I worry about use of DW_CFA_def_cfa_expression. From
what I can tell it's little used on x86-64 (linux) except for syscall
page and a few glibc exceptions.
Does anyone know any real-life uses of these?
There will be some with i686 and use of SSE arguments in parameters;
on x86-64 and use of AVX arguments in parameters.
Since AVX hardware isn't released yet, you'll not yet see any real-life
uses on x86-64, but it's coming.
r~
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