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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - nir_opt_algebraic.c takes too long to compile"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111737">111737</a>
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<th>Summary</th>
<td>nir_opt_algebraic.c takes too long to compile
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
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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>not set
</td>
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<th>Priority</th>
<td>not set
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<th>Component</th>
<td>glsl-compiler
</td>
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>idr@freedesktop.org
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>One our 72-thread build machine, release builds of Mesa used to take 90
seconds. They now take closer to 8 minutes. All of the extra time is spent
compiling nir_opt_algebraic.c. Debug builds do not seem to be affected. I
bisected this to:
f097247dd831da9b6e48baebc8b91efec3afcd28 is the first bad commit
commit f097247dd831da9b6e48baebc8b91efec3afcd28
Author: Samuel Iglesias Gonsálvez <<a href="mailto:siglesias@igalia.com">siglesias@igalia.com</a>>
Date: Wed Dec 12 16:29:13 2018 +0100
nir/algebraic: disable inexact optimizations depending on float controls
execution mode
If FLOAT_CONTROLS_SIGNED_ZERO_INF_NAN_PRESERVE or
FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO are enabled, do not apply the
inexact optimizations so the VK_KHR_shader_float_controls execution
mode is respected.
v2:
- Do not apply inexact optimizations if SHADER_DENORM_FLUSH_TO_ZERO is
enabled (Andres).
v3:
- Updated to renamed shader info member (Andres).
v4:
- Directly access execution mode instead of dragging it by parameter
(Caio).
Signed-off-by: Samuel Iglesias Gonsálvez <<a href="mailto:siglesias@igalia.com">siglesias@igalia.com</a>>
Signed-off-by: Andres Gomez <<a href="mailto:agomez@igalia.com">agomez@igalia.com</a>>
Reviewed-by: Connor Abbott <<a href="mailto:cwabbott0@gmail.com">cwabbott0@gmail.com</a>> [v1]
:040000 040000 33e076aacc5a6a4f10065cac2c8b06af0a5439a2
2b4a6e086b09648fc67a1f219777d51dc96f60f5 M src</pre>
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</p>
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