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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW bisected] integer multiplication bug"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90580">90580</a>
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<th>Summary</th>
<td>[HSW bisected] integer multiplication bug
</td>
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<th>Product</th>
<td>Mesa
</td>
</tr>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
</td>
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<th>Reporter</th>
<td>lemody@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<div>
<pre>Shader doing integer multiplication fails like this:
--- 8< ---
shader_runner: brw_ir_fs.h:195: fs_reg half(fs_reg, unsigned int): Assertion
`!"Cannot take half of this register type"' failed.
Aborted (core dumped)
Bisected to:
commit 4ec09c77471e39e6ff81c99f1edde2e1713a7f24
Author: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Date: Tue May 12 15:51:44 2015 -0700
i965/fs: Support integer multiplication in SIMD16 on Haswell.
Ivybridge (and presumably Baytrail) have a bug that prevents this from
working.
Reviewed-by: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>></pre>
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