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<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Brandon Chinn pushed to branch wip/strings 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: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ee0a9c18f537e4a02fa12999199fefc89b606402">ee0a9c18</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2024-08-14T14:27:39-04:00 </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;'>Extend -reexported-module flag to support module renaming
The -reexported-module flag now supports renaming -rexported-modules.
```
-rexported-module "A as B"
```
This feature is only relevant to multi-component sessions.
Fixes #25139
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e9496000ae32e6375c940e9e3c31beaf0ebcca07">e9496000</a></strong>
<div>
<span> by Arnaud Spiwack </span> <i> at 2024-08-14T14:28:20-04:00 </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;'>Don't restrict eta-reduction of linear functions
This commit simply removes code. All the supporting implementation has
been done as part of !12883.
Closes #25129
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2bb4156e106025bd776dae914bf82384d2f05165">2bb4156e</a></strong>
<div>
<span> by sheaf </span> <i> at 2024-08-14T14:28:56-04:00 </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;'>Allow @ character in C labels
Generated symbol names can include the '@' character, for example when using
`__attribute__((vectorcall))`.</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7602ca23ce2e7786b49c7ef62da8f5f33f767d20">7602ca23</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2024-08-14T14:29:36-04:00 </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;'>Linker: replace blind tuple with a datatype + docs
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bdd77b9ed575d45d3b2cce0abeaf120bb1c5f824">bdd77b9e</a></strong>
<div>
<span> by sheaf </span> <i> at 2024-08-16T12:47:11-04:00 </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;'>isIrrefutableHsPat: look up ConLikes in the HscEnv
At GhcRn stage, in isIrrefutableHsPat we only looked up data constructors
in the RdrEnv, which meant that we lacked fallibility information for
out-of-scope constructors (which can arise from Template Haskell splices).
Instead, we use 'lookupGREInfo', which looks up the information in
the type environment. This was the correct function to call all along,
but was not used in 572fbc44 due to import cycle reasons. The appropriate
functions, 'irrefutableConLike{Rn,Tc}' have been moved to 'GHC.Rename.Env',
which avoids import cycles.
Fixes #25164
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4bee377c15f53c7cb7ff7d04ad7855c4bb9ac92c">4bee377c</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2024-08-16T12:47:53-04:00 </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;'>Linker: some refactoring to prepare for #24886
- Rename LoadedBCOs into LazyBCOs
- Bundle SptEntries with CompiledByteCode and removed [SptEntry] field
from the BCOs constructor
- Rename Linkable's LM constructor into Linkable: in the past we had LM
and LP for Module and Package, now we only have the former.
- Rename Unlinked into LinkablePart (and linkableUnlinked into
linkableParts)
- Use NonEmpty to encode invariant in Linkable's linkableParts type
- Add helpers: linkableLibs, linkableBCOs, etc.
- Add documentation
- Remove partial nameOfObject
- Rename nameOfObject_maybe into linkablePartPath
- Rename byteCodeOfObject into linkablePartAllBCOs.
- Refactor linkablePartAllBCOs to avoid a panic if a LazyBCO has a C
stub. Document the fact that LazyBCOs are returned in this case
(contrary to linkableBCOs which only returns non-lazy ones)
Refactoring done while trying to understand how to adapt the linker code
to support the JS backend too (cf #24886).
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fa0dbaca6cc78bf626ce9038f347bdf388839fa5">fa0dbaca</a></strong>
<div>
<span> by Mario Blažević </span> <i> at 2024-08-17T03:31:32+00:00 </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;'>Implements the Exportable Named Default proposal (#24305)
This squashed commit adds support for exportable named defaults, the accepted
GHC proposal at https://github.com/ghc-proposals/ghc-proposals/pull/409
The proposal extends the Haskell '98 declarations
default (Int, Double)
which were implicitly always applying to Num class alone, to allow specifying
an arbitrary single-parameter class:
default IsString (Text, String)
The effect of this declaration would be to eliminate the ambiguous type errors
around string literals when OverloadedStrings extension is active. The
declaration by itself has effect only in its module, so the proposal also adds
the ability to export class defaults:
module MyModule (default IsIstring)
Once the language extension is published and established, we can consider using
it in base and other libraries.
See Note [Named default declarations] in GHC.Tc.Gen.Default
for implementation details.
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1deba6b25f9b5bc4bc0bdb17431998cfcb47bac4">1deba6b2</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-08-17T13:58:13-04:00 </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 kick-out more selective
This MR revised the crucial kick-out criteria in the constraint solver.
Ticket #24984 showed an example in which
* We were kicking out unnecessarily
* That gave rise to extra work, of course
* But it /also/ led to exponentially-sized coercions due to lack
of sharing in coercions (something we want to fix separately #20264)
This MR sharpens up the kick-out criteria; specifially in (KK2) we look
only under type family applications if (fs>=fw).
This forced me to understand the existing kick-out story, and I ended
up rewriting many of the careful Notes in GHC.Tc.Solver.InertSet.
Especially look at the new `Note [The KickOut Criteria]`
The proof of termination is not air-tight, but it is better than before,
and both Richard and I think it's correct :-).
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8848884718044dbcc08be134d768040ffa18d336">88488847</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2024-08-18T04:44:01+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;'>testsuite: remove undesired -fasm flag from test ways
This patch removes the -fasm flag from test ways, except ways like
optasm that explicitly state they are meant to be compiled with NCG
backend. Most test ways should use the default codegen backend, and
the precense of -fasm can cause stderr mismatches like this when GHC
is configured with the unregisterised backend:
```
--- /dev/null
+++ /tmp/ghctest-3hydwldj/test spaces/testsuite/tests/profiling/should_compile/prof-late-cc.run/prof-late-cc.comp.stderr.normalised
@@ -0,0 +1,2 @@
+when making flags consistent: warning: [GHC-74335] [-Winconsistent-flags (in -Wdefault)]
+ Target platform uses unregisterised ABI, so compiling via C
*** unexpected failure for prof-late-cc(prof_no_auto)
```
This has been breaking the wasm unreg nightly job since !12595 landed.
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3a145315052d6f66f9682ecff87b522011165d59">3a145315</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2024-08-18T13:05:45-04:00 </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;'>ghci: fix isMinTTY.h casing for Windows targets
This commit fixes isMinTTY.h casing in isMinTTY.c that's compiled for
Windows targets. While this looks harmless given Windows filesystems
are case-insensitive by default, it does cause a compilation warning
with recent versions of clang, so we might as well fix the casing:
```
driver\ghci\isMinTTY.c:10:10: error:
warning: non-portable path to file '"isMinTTY.h"'; specified path differs in case from file name on disk [-Wnonportable-include-path]
|
10 | #include "isMINTTY.h"
| ^
#include "isMINTTY.h"
^~~~~~~~~~~~
"isMinTTY.h"
1 warning generated.
```
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/74dc972a45e29eaa305065885eb62a998f02c09b">74dc972a</a></strong>
<div>
<span> by Brandon Chinn </span> <i> at 2024-08-18T22:40:06-07:00 </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;'>Distinguish multiline string section more clearly
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8913e00e995a9bda3fdedbb8c7e76dadaf42c30d">8913e00e</a></strong>
<div>
<span> by Brandon Chinn </span> <i> at 2024-08-18T22:40:06-07:00 </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;'>Replace manual string lexing
</pre>
</li>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/692335ec21d346fd25d39860f406ab9fa817fada">692335ec</a></strong>
<div>
<span> by Brandon Chinn </span> <i> at 2024-08-18T22:40:06-07:00 </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 tests for new lexing error messages
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
</h4>
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<a href="#2f6f8d6d05acc04b08fff94df4b3996c65b87892">
compiler/GHC/ByteCode/Asm.hs
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<a href="#5c66928780aaad0eb5888511dc4b0b08492c69fa">
compiler/GHC/ByteCode/Types.hs
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<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e">
compiler/GHC/Core/Lint.hs
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compiler/GHC/Core/Opt/Arity.hs
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compiler/GHC/Core/Predicate.hs
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compiler/GHC/Core/Type.hs
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compiler/GHC/CoreToIface.hs
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compiler/GHC/Driver/Errors/Types.hs
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compiler/GHC/Driver/Flags.hs
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compiler/GHC/Driver/Main.hs
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compiler/GHC/Driver/Make.hs
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compiler/GHC/Driver/Session.hs
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compiler/GHC/Hs/Decls.hs
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compiler/GHC/Hs/Pat.hs
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compiler/GHC/HsToCore.hs
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compiler/GHC/HsToCore/Quote.hs
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compiler/GHC/HsToCore/Utils.hs
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compiler/GHC/Iface/Ext/Ast.hs
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compiler/GHC/Iface/Load.hs
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compiler/GHC/Iface/Make.hs
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compiler/GHC/Iface/Syntax.hs
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compiler/GHC/Iface/Tidy.hs
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compiler/GHC/IfaceToCore.hs
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