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authorJakob Stoklund Olesen <stoklund@2pi.dk>2011-11-28 18:03:11 +0000
committerJakob Stoklund Olesen <stoklund@2pi.dk>2011-11-28 18:03:11 +0000
commit87f95dc8523a0d9f0e021f4af32e34675e79caf4 (patch)
tree496f475210128051dbfa75ce48065335977c7ff7 /docs
parent30c5fa24996d5945687bef2acc3b2ac1ef00f334 (diff)
downloadexternal_llvm-87f95dc8523a0d9f0e021f4af32e34675e79caf4.zip
external_llvm-87f95dc8523a0d9f0e021f4af32e34675e79caf4.tar.gz
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Explain what ExeDepsFix does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145253 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
-rw-r--r--docs/ReleaseNotes.html9
1 files changed, 6 insertions, 3 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index e3b3bae..435bd93 100644
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@@ -942,9 +942,12 @@ be used to verify some algorithms.
comparisons, turning them into various optimized code sequences (e.g.
using the SSE4/AVX "blend" instructions).</li>
<li>The SSE execution domain fix pass and the ARM NEON move fix pass have been
- merged to a target independent execution dependency fix pass. Targets can
- override the <code>getExecutionDomain</code> and
- <code>setExecutionDomain</code> hooks to use it.</li>
+ merged to a target independent execution dependency fix pass. This pass is
+ used to select alternative equivalent opcodes in a way that minimizes
+ execution domain crossings. Closely connected instructions are moved to
+ the same execution domain when possible. Targets can override the
+ <code>getExecutionDomain</code> and <code>setExecutionDomain</code> hooks
+ to use the pass.</li>
</ul>
</div>