<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Add FP64 support to the i965 shader backends"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92760#c51">Comment # 51</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Add FP64 support to the i965 shader backends"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92760">bug 92760</a>
from <span class="vcard"><a class="email" href="mailto:itoral@igalia.com" title="Iago Toral <itoral@igalia.com>"> <span class="fn">Iago Toral</span></a>
</span></b>
<pre>I noticed that nir_lower_locals_to_regs can insert MOVs of 64-bit things and we
need to catch these in our double splitting pass for the vec4 backend. However,
I am a bit confused here because nir_lower_locals_to_regs injects nir_registers
and not SSA definitions so the double splitting pass can't handle the generated
NIR after it at the moment:
decl_reg vec4 64 r0[4]
(...)
vec4 64 ssa_6 = intrinsic load_ubo (ssa_0, ssa_5) () ()
r0[3] = imov ssa_6
(...)
vec4 64 ssa_12 = imov r0[0 + ssa_11]
If this is correct and expected, then I guess we will have to amend the double
splitting pass to handle nir_registers as well, right?</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>