Re: _mm_add_ps SIGSEGV

[Paul Pluzhnikov]

Alan Woodland <ajw05@aber.ac.uk> writes:

> This code segfaults on the last line quoted here, which isn't surprising
> because c isn't aligned correctly. My question now is twofold:
> a) Why isn't c aligned how __m128 needs to be? and

Because "operator new[]" has been compiled with "strictest alignment
8 on this platform", which is true for all "regular" types, but
not for SSE :(

> b) How to work around it? Is it even possible to get an array of __m128s
> aligned correctly?

Use memalign() or posix_memalign().

Cheers,
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