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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - GLSL: vectorize optimization goes wrong on dot products"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75224#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - GLSL: vectorize optimization goes wrong on dot products"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75224">bug 75224</a>
from <span class="vcard"><a class="email" href="mailto:aras@unity3d.com" title="Aras Pranckevicius <aras@unity3d.com>"> <span class="fn">Aras Pranckevicius</span></a>
</span></b>
<pre>Locally I could fix this with:
/* Upon entering an ir_binop_dot, remove the current assignment from
* further consideration. Dot product is "horizontal" instruction
* that we can't vectorize.
*/
ir_visitor_status
ir_vectorize_visitor::visit_enter(ir_expression *ir)
{
if (ir->operation == ir_binop_dot) {
this->current_assignment = NULL;
return visit_continue_with_parent;
}
return visit_continue;
}
But not sure if that's the correct approach.</pre>
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