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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - ineg of b2i32 optimization does not trigger"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111578">111578</a>
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<th>Summary</th>
<td>ineg of b2i32 optimization does not trigger
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>minor
</td>
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<th>Priority</th>
<td>not set
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<th>Component</th>
<td>glsl-compiler
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>idr@freedesktop.org
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>This is mostly a note to myself.
While looking at <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [REGRESSION] [BISECTED] Shadow Tactics: Blades of the Shogun - problems rendering water"
href="show_bug.cgi?id=111490">bug #111490</a>, I noticed many instances of patterns like
vec1 32 ssa_127 = ior ssa_125, ssa_126
vec1 32 ssa_128 = b2i32 ssa_127
vec1 32 ssa_129 = ineg ssa_128
I thought I'd add an optimization to clean this up, but it already exists:
dca6cd9ce651 src/compiler/nir/nir_opt_algebraic.py (Jason Ekstrand
2018-11-07 13:43:40 -0600 550) (('ineg', ('b2i32', 'a@32')), a),
Why doesn't the existing transformation trigger?</pre>
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