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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Vladislav Zavialov pushed to branch wip/int-index/emb-type
at <a href="https://gitlab.haskell.org/ghc/ghc" style="color: #1068bf;">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/09ec7de23ea826cb7ac25cb96a214808693de377" style="color: #1068bf;">09ec7de2</a></strong>
<div>
<span>by Teo Camarasu</span>
<i>at 2022-10-21T13:23:07-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>template-haskell: Improve documentation of strictness annotation types
Before it was undocumentated that DecidedLazy can be returned by
reifyConStrictness for strict fields. This can happen when a field has
an unlifted type or its the single field of a newtype constructor.
Fixes #21380
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/881720697d7d3297120a56a74e2a94e938d6aaa1" style="color: #1068bf;">88172069</a></strong>
<div>
<span>by M Farkas-Dyck</span>
<i>at 2022-10-21T13:23:51-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Delete `eqExpr`, since GHC 9.4 has been released.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/86e6549ea3090d0d79c2aaed8373ba5696f2b6a9" style="color: #1068bf;">86e6549e</a></strong>
<div>
<span>by Ömer Sinan Ağacan</span>
<i>at 2022-10-22T07:41:30-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Introduce a standard thunk for allocating strings
Currently for a top-level closure in the form
hey = unpackCString# x
we generate code like this:
Main.hey_entry() // [R1]
{ info_tbls: [(c2T4,
label: Main.hey_info
rep: HeapRep static { Thunk }
srt: Nothing)]
stack_info: arg_space: 8 updfr_space: Just 8
}
{offset
c2T4: // global
_rqm::P64 = R1;
if ((Sp + 8) - 24 < SpLim) (likely: False) goto c2T5; else goto c2T6;
c2T5: // global
R1 = _rqm::P64;
call (stg_gc_enter_1)(R1) args: 8, res: 0, upd: 8;
c2T6: // global
(_c2T1::I64) = call "ccall" arg hints: [PtrHint,
PtrHint] result hints: [PtrHint] newCAF(BaseReg, _rqm::P64);
if (_c2T1::I64 == 0) goto c2T3; else goto c2T2;
c2T3: // global
call (I64[_rqm::P64])() args: 8, res: 0, upd: 8;
c2T2: // global
I64[Sp - 16] = stg_bh_upd_frame_info;
I64[Sp - 8] = _c2T1::I64;
R2 = hey1_r2Gg_bytes;
Sp = Sp - 16;
call GHC.CString.unpackCString#_info(R2) args: 24, res: 0, upd: 24;
}
}
This code is generated for every string literal. Only difference between
top-level closures like this is the argument for the bytes of the string
(hey1_r2Gg_bytes in the code above).
With this patch we introduce a standard thunk in the RTS, called
stg_MK_STRING_info, that does what `unpackCString# x` does, except it
gets the bytes address from the payload. Using this, for the closure
above, we generate this:
Main.hey_closure" {
Main.hey_closure:
const stg_MK_STRING_info;
const 0; // padding for indirectee
const 0; // static link
const 0; // saved info
const hey1_r1Gg_bytes; // the payload
}
This is much smaller in code.
Metric Decrease:
T10421
T11195
T12150
T12425
T16577
T18282
T18698a
T18698b
Co-Authored By: Ben Gamari <ben@well-typed.com>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1937016b7834338eef12be19caefc8e37a90cd29" style="color: #1068bf;">1937016b</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2022-10-22T07:42:06-04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>hadrian: Improve error for wrong key/value errors.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0c4c71e8ba839c13c4c2d1a96f4527eb122dff43" style="color: #1068bf;">0c4c71e8</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2022-10-24T04:09:46+04:00</i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>WIP: vdq
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">30 changed files:</h4>
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<a href="#f73a4fa90a8eb153bccdcfcc9f63c15edcd66785" style="color: #1068bf;">
compiler/GHC/Cmm.hs
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<a href="#db697f6aea9f93f1583f1d5c62d25570a1e07f73" style="color: #1068bf;">
compiler/GHC/Cmm/CLabel.hs
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<a href="#2d3721ad8de95e1144493ca545db846672cb109f" style="color: #1068bf;">
compiler/GHC/Cmm/Info/Build.hs
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<a href="#71e696f452eb493722d70306c6f304fc9b2f6a95" style="color: #1068bf;">
compiler/GHC/Cmm/Parser.y
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<a href="#691eec62dc293d0881c314b38b7363dc88b44c59" style="color: #1068bf;">
compiler/GHC/Core/Map/Type.hs
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<a href="#446b4afbe6836b950115a619acea24ddde19dc90" style="color: #1068bf;">
compiler/GHC/Core/Opt/CSE.hs
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<a href="#1a7aba0daeafab195716dd25432479804a55ab60" style="color: #1068bf;">
compiler/GHC/Core/Utils.hs
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<a href="#774d88050336ef660c7a219fb06c480c2fc639bc" style="color: #1068bf;">
compiler/GHC/Driver/Session.hs
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<a href="#cc97d81e7223ad4a3a5e801156ca632f9fa75654" style="color: #1068bf;">
compiler/GHC/Hs/Expr.hs
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<a href="#0bae7e7e67b5f9b6ba2a371f8917cf74423a0c6f" style="color: #1068bf;">
compiler/GHC/Hs/Pat.hs
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<a href="#f5160f63851d2edcbf12e12247c1b078cf40f20a" style="color: #1068bf;">
compiler/GHC/Hs/Syn/Type.hs
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<a href="#7a1af22e4c32b9aa6ec708d9d3788e1c4db5da9a" style="color: #1068bf;">
compiler/GHC/Hs/Utils.hs
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<a href="#6bdd5abc649727f2a802bc96ce5c276de19d3726" style="color: #1068bf;">
compiler/GHC/HsToCore/Expr.hs
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<a href="#085703923f9c18f6ac9f926ac9a4c7c7e6d9d9ed" style="color: #1068bf;">
compiler/GHC/HsToCore/Match.hs
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<a href="#950eaa7de202a2e915b5ff68a4cfd16e972ad359" style="color: #1068bf;">
compiler/GHC/HsToCore/Pmc/Desugar.hs
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<a href="#649144a78135a23cabfc90dd83c4aabf448eb6ab" style="color: #1068bf;">
compiler/GHC/Iface/Ext/Ast.hs
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<a href="#bf951467d4a9aa443cb109cb4c84a2891945649b" style="color: #1068bf;">
compiler/GHC/Parser.y
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<a href="#446cb12ca6cefaf1c6eb79b7db643632744263c7" style="color: #1068bf;">
compiler/GHC/Parser/PostProcess.hs
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<a href="#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2" style="color: #1068bf;">
compiler/GHC/Rename/Expr.hs
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compiler/GHC/Rename/Pat.hs
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compiler/GHC/Rename/Utils.hs
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compiler/GHC/StgToCmm/Bind.hs
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compiler/GHC/StgToCmm/Heap.hs
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compiler/GHC/StgToCmm/Utils.hs
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<a href="#1dd9c7a6bbc222c976a6ec1c4b772232ae60f7e5" style="color: #1068bf;">
compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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<a href="#6a1f039ed7725eddef15dd5f4dc318a3434f26c9" style="color: #1068bf;">
compiler/GHC/Tc/Gen/App.hs
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<a href="#71fa5eb3ba70e1d3a6181a226c2c227d42f1eb7d" style="color: #1068bf;">
compiler/GHC/Tc/Gen/Arrow.hs
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compiler/GHC/Tc/Gen/Expr.hs
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compiler/GHC/Tc/Gen/Match.hs
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