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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i965 Bisected]ES2-CTS.gtf.GL.cos.cos_float_vert_xvary fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87887#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [i965 Bisected]ES2-CTS.gtf.GL.cos.cos_float_vert_xvary fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=87887">bug 87887</a>
from <span class="vcard"><a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> <span class="fn">Kenneth Graunke</span></a>
</span></b>
<pre>It looks like opt_vector_float is just deleting writes to m4:
-mov m4.yz:F, 0.000000F
-mov m4.w:F, 1.000000F
-mov vgrf4.0.x:F, 0.500000F
+mov vgrf4.0:F, [0.5F, 0F, 0F, 1F]
mov vgrf5.0.x:F, 0.500000F
mul vgrf7.0.x:F, attr17.xxxx:F, 6.283185F
cos vgrf6.0.x:F, vgrf7.xxxx:F
I haven't looked at the code to determine why (I figure I'll let Matt fix it).
I do have patches on the list to make INTEL_DEBUG=optimizer work for debugging
this.</pre>
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