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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Hannes Siebenhandl pushed to branch wip/fendor/ghc-iface-sharing-avoid-reserialisation at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43e8e4f388db80a57d8633de761540dcca21a16b">43e8e4f3</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2024-05-24T12:16:43-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Float/double unboxed literal support for HexFloatLiterals (fix #22155)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4a7f47138efd3dfa417caf526e384c3468b62525">4a7f4713</a></strong>
<div>
<span> by Fendor </span> <i> at 2024-05-24T12:17:19-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Improve test labels for binary interface file size tests
Test labels for binary interface file sizes are hard to read and overly
verbose at the same time. Extend the name for the metric title, but
shorten it in the actual comparison table.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/14e554cf682ae975ba356b07672c0f9d465e2a78">14e554cf</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Revert "Fix haskell/haddock#783 Don't show button if --quickjump not present"
This reverts commit 7776566531e72c415f66dd3b13da9041c52076aa.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f56838c36235febb224107fa62334ebfe9941aba">f56838c3</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Fix default hyperlinked sources pattern
Previously this didn't include the `%M` token which manifested as broken
links to the hyperlinked sources of reexports of declarations defined
in other packages.
Fixes haddock#1628.
(cherry picked from commit 1432bcc943d41736eca491ecec4eb9a6304dab36)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/42efa62c8e46da16e589520f4b93266f1ba2a904">42efa62c</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Make DocPaths a proper data type
(cherry picked from commit 7f3a5c4da0023ae47b4c376c9b1ea2d706c94d8c)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/53d9ceb3cba88287585a430bb1fc509604e4e6ed">53d9ceb3</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>haddock: Bump version to 2.30
(cherry picked from commit 994989ed3d535177e57b778629726aeabe8c7602)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e4db111206604ef5815e9fe8e15e82d2013a8789">e4db1112</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>haddock-api: allow base 4.20 and ghc 9.11
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e294f7a22412e3182a1ff8e101907d50bdb534a1">e294f7a2</a></strong>
<div>
<span> by PHO </span> <i> at 2024-05-24T12:17:55-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add a flag "threaded" for building haddock with the threaded RTS
GHC isn't guaranteed to have a threaded RTS. There should be a way to build
it with the vanilla one.
(cherry picked from commit 75a94e010fb5b0236c670d22b04f5472397dc15d)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/51165bc9b7b040d5017d3038cfce5ac3c0ddf9bd">51165bc9</a></strong>
<div>
<span> by Andreas Klebinger </span> <i> at 2024-05-25T10:58:03-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Update ticky counter event docs.
Add the info about the info table address and json fields.
Fixes #23200
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/98597ad5fca81544d74f721fb508295fd2650232">98597ad5</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2024-05-25T10:58:45-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Export extractPromotedList (#24866)
This can be useful in plugins.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c0cfd258836e95202be49a53fc42d0cb7ee17567">c0cfd258</a></strong>
<div>
<span> by Fendor </span> <i> at 2024-05-27T09:02:59+02:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Improve sharing of duplicated values in `ModIface`
As a `ModIface` contains often duplicated values that are not
necessarily shared, we improve sharing by serialising the `ModIface`
to an in-memory byte array. Serialisation uses deduplication tables, and
deserialisation implicitly shares duplicated values.
This helps reducing the peak memory usage while compiling in
`--make` mode. The peak memory usage is especially reduced when
generating interface files with core expressions
(`-fwrite-if-simplified-core`).
On agda, this reduces the peak memory usage:
* `2.2 GB` to `1.9 GB` for a ghci session.
On `lib:Cabal`, we report:
* `570 MB` to `500 MB` for a ghci session
* `790 MB` to `667 MB` for compiling `lib:Cabal` with ghc
There is a small impact on execution time, around 2% on the agda code
base.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2c119265c46b5cbe9e092bbf95e7b76311f82f5e">2c119265</a></strong>
<div>
<span> by Fendor </span> <i> at 2024-05-27T09:02:59+02:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Avoid unneccessarily re-serialising the `ModIface`
To reduce memory usage of `ModIface`, we serialise `ModIface` to an
in-memory byte array, which implicitly shares duplicated values.
This serailised byte array can be reused to avoid work when we actually
write the `ModIface` to disk.
We introduce a new field to `ModIface` which allows us to save the byte
array, and write it to disk if the `ModIface` wasn't changed after the
initial serialisation.
This requires us to change absolute offsets, for example to jump to the
deduplication table for `Name` or `FastString` with relative offsets, as
the deduplication byte array doesn't contain header information, such as
fingerprints.
To allow us to dump the binary blob to disk, we need to replace all
absolute offsets with relative ones.
This leads to new primitives for `ModIface`, which help to construct
relative offsets.
Bump Haddock submodule, to account for interface file changes.
-------------------------
Metric Decrease:
MultiLayerModulesDefsGhcWithCore
Metric Increase:
MultiComponentModules
MultiLayerModules
T10421
T12234
T12425
T13035
T13701
T13719
T14697
T15703
T16875
T18730
T9198
mhu-perf
-------------------------
These metric increases may look bad, but they are all completely benign,
we simply allocate 1 MB per module for `shareIface`. As this allocation
is quite quick, it has a neglible impact on run-time performance.
</pre>
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<h4 style="margin-top: 10px; margin-bottom: 10px;">
28 changed files:
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<a href="#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c">
compiler/GHC.hs
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<a href="#377cfd14c1f92357465df995ec6537b074051322">
compiler/GHC/Builtin/Types.hs
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<a href="#9f11c1c113f11a416be9e556904531050cbb5b2e">
compiler/GHC/Iface/Binary.hs
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<a href="#699117ec0ed92a01cc9116db16477e81cd1e2ff6">
compiler/GHC/Iface/Ext/Binary.hs
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<a href="#5df260b9f4dc378b5ad210bfabe8ca829890902c">
compiler/GHC/Iface/Ext/Fields.hs
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<a href="#7d51edda4fa76a202cce0bca672ef300249ba8ea">
compiler/GHC/Iface/Load.hs
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<a href="#4ed0dc87b8bdd9324e8a181cff15caa104b9e58c">
compiler/GHC/Iface/Make.hs
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<a href="#a8e6b17fc507589522323d8dd20d9713e8c06760">
compiler/GHC/Iface/Recomp.hs
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<a href="#d11de0586c9bcbcf4c5d10d94801cc1f97e8df1b">
compiler/GHC/Iface/Rename.hs
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<a href="#a1ae0a1be35c859d90b0756920a7198075fb91e1">
compiler/GHC/Parser/Lexer.x
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<a href="#897218b3e24728ae9e5b0329b949493f1ede80fb">
compiler/GHC/Tc/Errors/Hole.hs
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compiler/GHC/Tc/Gen/Splice.hs
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<a href="#5d7c5ef0541bd4c1c950ecc95edf95171d20f538">
compiler/GHC/Tc/Utils/Backpack.hs
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<a href="#1b4da42c16b46d6c6cc2c2962072b1e91f519f4a">
compiler/GHC/Unit/Module/ModIface.hs
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<a href="#f35faa85de2e0a75cdaa452eb7336a09c677d450">
compiler/GHC/Utils/Binary.hs
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<a href="#f595baeef5a4f6e40ab0d654fa17c31a4f4aec73">
docs/users_guide/9.12.1-notes.rst
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docs/users_guide/eventlog-formats.rst
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testsuite/driver/testutil.py
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<a href="#55f2640b716abdcd3012c5c1802b6e4be4cbfddc">
testsuite/tests/iface/all.T
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testsuite/tests/parser/should_compile/T22155.hs
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testsuite/tests/parser/should_compile/all.T
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<a href="#d0af5c870f431f527da62d336c841bc9bdcbc67e">
testsuite/tests/plugins/simple-plugin/Simple/RemovePlugin.hs
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<a href="#c8710cad97de97fe8c01f507c06ca12c4e701940">
utils/haddock/haddock-api/haddock-api.cabal
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utils/haddock/haddock-api/resources/html/haddock-bundle.min.js
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<a href="#55d780ba98d03ad3cc1e707888cd7c363e699ee0">
utils/haddock/haddock-api/resources/html/js-src/quick-jump.tsx
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<a href="#9b4d2ab0362660859463f86c984f216738442884">
utils/haddock/haddock-api/resources/html/package-lock.json
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utils/haddock/haddock-api/resources/html/package.json
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