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<h3>
Ben Gamari pushed to branch wip/explicit-perf-baseline
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e61d539527a7398017f759c67621ba18a15878f7">e61d5395</a></strong>
<div>
<span>by Chaitanya Koparkar</span>
<i>at 2020-07-07T13:55:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">ghc-prim: Turn some comments into haddocks
[ci skip]
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/37743f91a3f5018a8894ca6d35e8b423e4e08b50">37743f91</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-07-07T13:56:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Support `timesInt2#` in LLVM backend
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/46397e530e1b107c6b8932f7ca79ebab53a3249a">46397e53</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-07-07T13:56:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">`genericIntMul2Op`: Call `genericWordMul2Op` directly
This unblocks a refactor, and removes partiality. It might be a PowerPC
regression but that should be fixable.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8a1c0584da40d0f8d1ffd01796efcce3b3d0820d">8a1c0584</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-07-07T13:56:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Simplify `PrimopCmmEmit`
Follow @simonpj's suggestion of pushing the "into regs" logic into
`emitPrimOp`. With the previous commit getting rid of the recursion in
`genericIntMul2Op`, this is now an easy refactor.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6607f203fb9ad11af1463145810e1bd3c6c4f2c8">6607f203</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-07-07T13:56:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">`opAllDone` -> `opIntoRegs`
The old name was and terrible and became worse after the previous
commit's refactor moved non-trivial funcationlity into its body.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fdcc53babbd6c878344d2a3395bbd619428bd2dd">fdcc53ba</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-07T13:56:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Optimise genericIntMul2Op
We shouldn't directly call 'genericWordMul2Op' in genericIntMul2Op
because a target may provide a faster primop for 'WordMul2Op': we'd
better use it!
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/686e72253aed3880268dd6858eadd8c320f09e97">686e7225</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-07T13:56:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">[linker/rtsSymbols] More linker symbols
Mostly symbols needed for aarch64/armv7l
and in combination with musl, where we have
to rely on loading *all* objects/archives
- __stack_chk_* only when not DYNAMIC
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3f60b94de1f460ca3f689152860b108a19ce193e">3f60b94d</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-07T13:56:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">better if guards.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7abffced01f5680efafe44f6be2733eab321b039">7abffced</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-07T13:56:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix (1)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cdfeb3f24f76e8fd30452016676e56fbc827789a">cdfeb3f2</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-07T13:56:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">AArch32 symbols only on aarch32.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f496c9550098ffaa3bf25a3447c138626d79bae0">f496c955</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-07-07T13:56:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">add -flink-rts flag to link the rts when linking a shared or static library #18072
By default we don't link the RTS when linking shared libraries because in the
most usual mode a shared library is an intermediary product, for example a
Haskell library, that will be linked into some executable in the end. So we
wish to defer the RTS flavour to link to the final link.
However sometimes the final product is the shared library, for example when
writing a plugin for some other system, so we do wish the shared library to
link the RTS.
For consistency we also make -staticlib honor this flag and its inversion.
-staticlib currently implies -flink-shared.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c59faf67fec83c98ffd1b65f1be0775b34f36595">c59faf67</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-07T13:56:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: link check-ppr against debugging RTS if ghcDebugged
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0effc57d48ace6b719a9f4cbeac67c95ad55010b">0effc57d</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-07-07T13:56:05-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts linker: teach the linker about GLIBC's special handling of *stat, mknod and atexit functions #7072
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9615343363a68313c4bfdb068696002ecca7786e">96153433</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-07-07T13:56:06-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: make hadrian/ghci use the bootstrap compiler from configure #18190
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4d24f886a428e95eb5e962294c77b12bffa40a52">4d24f886</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-07-07T13:56:07-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: ignore cabal configure verbosity related flags #18131
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7332bbffee9e2a712508540200eb52ed3d227426">7332bbff</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-07T13:56:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Widen T12234 acceptance window to 2%
Previously it wasn't uncommon to see +/-1% fluctuations in compiler
allocations on this test.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/180b63136f25d9fedb764cb9bc23637e7781ed4e">180b6313</a></strong>
<div>
<span>by Gabor Greif</span>
<i>at 2020-07-07T13:56:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">When running libtool, report it as such</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d3bd68978476487591fc60f7feb7cfb36b8fc3a3">d3bd6897</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-07T13:56:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">BigNum: rename BigNat types
Before this patch BigNat names were confusing because we had:
* GHC.Num.BigNat.BigNat: unlifted type used everywhere else
* GHC.Num.BigNat.BigNatW: lifted type only used to share static constants
* GHC.Natural.BigNat: lifted type only used for backward compatibility
After this patch we have:
* GHC.Num.BigNat.BigNat#: unlifted type
* GHC.Num.BigNat.BigNat: lifted type (reexported from GHC.Natural)
Thanks to @RyanGlScott for spotting this.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/929d26db3080ec49ab67690952a316fc082b479f">929d26db</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-07T13:56:12-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bignum: don't build ghc-bignum with stage0
Noticed by @Ericson2314
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d25b6851bbd63b6a65fb7cd08b37c6bc74df9855">d25b6851</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-07T13:56:12-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Hadrian: ghc-gmp.h shouldn't be a compiler dependency
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0ddae2ba979ac2e01d7d9f6b79a9559fbfde46ea">0ddae2ba</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-07T13:56:14-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">DynFlags: factor out pprUnitId from "Outputable UnitId" instance
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/204f3f5ddec56403bfb12e74291b3b1d14824138">204f3f5d</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2020-07-07T13:56:18-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove unused function pprHsForAllExtra (#18423)
The function `pprHsForAllExtra` was called only on `Nothing`
since 2015 (1e041b7382b6aa).
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3033e0e4940e6ecc43f478f1dcfbd0c3cb1e3ef8">3033e0e4</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-07-08T20:36:49-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: add flag to skip rebuilding dependency information #17636
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b7de4b960a1024adcd0bded6bd320a90979d7ab8">b7de4b96</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-09T09:49:22-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix GHCi :print on big-endian platforms
On big-endian platforms executing
import GHC.Exts
data Foo = Foo Float# deriving Show
foo = Foo 42.0#
foo
:print foo
results in an arithmetic overflow exception which is caused by function
index where moveBytes equals
word_size - (r + item_size_b) * 8
Here we have a mixture of units. Both, word_size and item_size_b have
unit bytes whereas r has unit bits. On 64-bit platforms moveBytes
equals then
8 - (0 + 4) * 8
which results in a negative and therefore invalid second parameter for a
shiftL operation.
In order to make things more clear the expression
(word .&. (mask `shiftL` moveBytes)) `shiftR` moveBytes
is equivalent to
(word `shiftR` moveBytes) .&. mask
On big-endian platforms the shift must be a left shift instead of a
right shift. For symmetry reasons not a mask is used but two shifts in
order to zero out bits. Thus the fixed version equals
case endian of
BigEndian -> (word `shiftL` moveBits) `shiftR` zeroOutBits `shiftL` zeroOutBits
LittleEndian -> (word `shiftR` moveBits) `shiftL` zeroOutBits `shiftR` zeroOutBits
Fixes #16548 and #14455
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3656dff8259199d0dab2d1a1f1b887c252a9c1a3">3656dff8</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-09T09:50:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">LLVM: fix MO_S_Mul2 support (#18434)
The value indicating if the carry is useful wasn't taken into account.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9f095060b0f00d7140f8b0858b7a5dcbffea9ef">d9f09506</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-10T10:33:44-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Define multiShotIO and use it in mkSplitUniqueSupply
This patch is part of the ongoing eta-expansion saga;
see #18238.
It implements a neat trick (suggested by Sebastian Graf)
that allows the programmer to disable the default one-shot behaviour
of IO (the "state hack"). The trick is to use a new multiShotIO
function; see Note [multiShotIO]. For now, multiShotIO is defined
here in Unique.Supply; but it should ultimately be moved to the IO
library.
The change is necessary to get good code for GHC's unique supply;
see Note [Optimising the unique supply].
However it makes no difference to GHC as-is. Rather, it makes
a difference when a subsequent commit
Improve eta-expansion using ArityType
lands.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bce695cc97cadbc3eced5b53efaaa0ecfd201d61">bce695cc</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-10T10:33:44-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make arityType deal with join points
As Note [Eta-expansion and join points] describes,
this patch makes arityType deal correctly with join points.
What was there before was not wrong, but yielded lower
arities than it could.
Fixes #18328
In base GHC this makes no difference to nofib.
Program Size Allocs Runtime Elapsed TotalMem
--------------------------------------------------------------------------------
n-body -0.1% -0.1% -1.2% -1.1% 0.0%
--------------------------------------------------------------------------------
Min -0.1% -0.1% -55.0% -56.5% 0.0%
Max -0.0% 0.0% +16.1% +13.4% 0.0%
Geometric Mean -0.0% -0.0% -30.1% -31.0% -0.0%
But it starts to make real difference when we land the change to the
way mkDupableAlts handles StrictArg, in fixing #13253 and friends.
I think this is because we then get more non-inlined join points.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2b7c71cb79095a10b9a5964a5a0676a2a196e92d">2b7c71cb</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-11T12:17:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve eta-expansion using ArityType
As #18355 shows, we were failing to preserve one-shot info when
eta-expanding. It's rather easy to fix, by using ArityType more,
rather than just Arity.
This patch is important to suport the one-shot monad trick;
see #18202. But the extra tracking of one-shot-ness requires
the patch
Define multiShotIO and use it in mkSplitUniqueSupply
If that patch is missing, ths patch makes things worse in
GHC.Types.Uniq.Supply. With it, however, we see these improvements
T3064 compiler bytes allocated -2.2%
T3294 compiler bytes allocated -1.3%
T12707 compiler bytes allocated -1.3%
T13056 compiler bytes allocated -2.2%
Metric Decrease:
T3064
T3294
T12707
T13056
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/de139cc496c0e0110e252a1208ae346f47f8061e">de139cc4</a></strong>
<div>
<span>by Artem Pelenitsyn</span>
<i>at 2020-07-12T02:53:20-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">add reproducer for #15630
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c4de6a7a5c6433ae8c4df8a9fa09fbd9f3bbd0bf">c4de6a7a</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-12T02:53:55-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Give Uniq[D]FM a phantom type for its key.
This fixes #17667 and should help to avoid such issues going forward.
The changes are mostly mechanical in nature. With two notable
exceptions.
* The register allocator.
The register allocator references registers by distinct uniques.
However they come from the types of VirtualReg, Reg or Unique in
various places. As a result we sometimes cast the key type of the
map and use functions which operate on the now typed map but take
a raw Unique as actual key. The logic itself has not changed it
just becomes obvious where we do so now.
* <Type>Env Modules.
As an example a ClassEnv is currently queried using the types `Class`,
`Name`, and `TyCon`. This is safe since for a distinct class value all
these expressions give the same unique.
getUnique cls
getUnique (classTyCon cls)
getUnique (className cls)
getUnique (tcName $ classTyCon cls)
This is for the most part contained within the modules defining the
interface. However it requires us to play dirty when we are given a
`Name` to lookup in a `UniqFM Class a` map. But again the logic did
not change and it's for the most part hidden behind the Env Module.
Some of these cases could be avoided by refactoring but this is left
for future work.
We also bump the haddock submodule as it uses UniqFM.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c2cfdfde20d0d6c0e16aa7a84d8ebe51501bcfa8">c2cfdfde</a></strong>
<div>
<span>by Aaron Allen</span>
<i>at 2020-07-13T09:00:33-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Warn about empty Char enumerations (#18402)
Currently the "Enumeration is empty" warning (-Wempty-enumerations)
only fires for numeric literals. This patch adds support for `Char`
literals so that enumerating an empty list of `Char`s will also
trigger the warning.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c3ac87ece2716b83ad886e81c20f4161e8ec0efd">c3ac87ec</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-13T09:01:10-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: build check-ppr dynamic if GHC is build dynamic
Fixes #18361
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9ad072b487fe528947f817b0417933a6cd1941b7">9ad072b4</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-13T14:52:49-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use dumpStyle when printing inlinings
This just makes debug-printing consistent,
and more informative.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e78c4efb8735eb97f17e7b4ca35e305b0766f78a">e78c4efb</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-13T14:52:49-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Comments only
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7ccb760b1a8034b28171d7540712fd195f65d1fd">7ccb760b</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-13T14:52:49-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Reduce result discount in conSize
Ticket #18282 showed that the result discount given by conSize
was massively too large. This patch reduces that discount to
a constant 10, which just balances the cost of the constructor
application itself.
Note [Constructor size and result discount] elaborates, as
does the ticket #18282.
Reducing result discount reduces inlining, which affects perf. I
found that I could increase the unfoldingUseThrehold from 80 to 90 in
compensation; in combination with the result discount change I get
these overall nofib numbers:
Program Size Allocs Runtime Elapsed TotalMem
--------------------------------------------------------------------------------
boyer -0.2% +5.4% -3.2% -3.4% 0.0%
cichelli -0.1% +5.9% -11.2% -11.7% 0.0%
compress2 -0.2% +9.6% -6.0% -6.8% 0.0%
cryptarithm2 -0.1% -3.9% -6.0% -5.7% 0.0%
gamteb -0.2% +2.6% -13.8% -14.4% 0.0%
genfft -0.1% -1.6% -29.5% -29.9% 0.0%
gg -0.0% -2.2% -17.2% -17.8% -20.0%
life -0.1% -2.2% -62.3% -63.4% 0.0%
mate +0.0% +1.4% -5.1% -5.1% -14.3%
parser -0.2% -2.1% +7.4% +6.7% 0.0%
primetest -0.2% -12.8% -14.3% -14.2% 0.0%
puzzle -0.2% +2.1% -10.0% -10.4% 0.0%
rsa -0.2% -11.7% -3.7% -3.8% 0.0%
simple -0.2% +2.8% -36.7% -38.3% -2.2%
wheel-sieve2 -0.1% -19.2% -48.8% -49.2% -42.9%
--------------------------------------------------------------------------------
Min -0.4% -19.2% -62.3% -63.4% -42.9%
Max +0.3% +9.6% +7.4% +11.0% +16.7%
Geometric Mean -0.1% -0.3% -17.6% -18.0% -0.7%
I'm ok with these numbers, remembering that this change removes
an *exponential* increase in code size in some in-the-wild cases.
I investigated compress2. The difference is entirely caused by this
function no longer inlining
WriteRoutines.$woutputCodes
= \ (w :: [CodeEvent]) ->
let result_s1Sr
= case WriteRoutines.outputCodes_$s$woutput w 0# 0# 8# 9# of
(# ww1, ww2 #) -> (ww1, ww2)
in (# case result_s1Sr of (x, _) ->
map @Int @Char WriteRoutines.outputCodes1 x
, case result_s1Sr of { (_, y) -> y } #)
It was right on the cusp before, driven by the excessive result
discount. Too bad!
Happily, the compiler/perf tests show a number of improvements:
T12227 compiler bytes-alloc -6.6%
T12545 compiler bytes-alloc -4.7%
T13056 compiler bytes-alloc -3.3%
T15263 runtime bytes-alloc -13.1%
T17499 runtime bytes-alloc -14.3%
T3294 compiler bytes-alloc -1.1%
T5030 compiler bytes-alloc -11.7%
T9872a compiler bytes-alloc -2.0%
T9872b compiler bytes-alloc -1.2%
T9872c compiler bytes-alloc -1.5%
Metric Decrease:
T12227
T12545
T13056
T15263
T17499
T3294
T5030
T9872a
T9872b
T9872c
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7f0b671ee8a65913891c07f157b21d77d6c63036">7f0b671e</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-13T14:52:49-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Widen acceptance threshold on T5837
This test is positively tiny and consequently the bytes allocated
measurement will be relatively noisy. Consequently I have seen this
fail spuriously quite often.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/118e1c3da622f17c67b4e0fbc12ed7c7084055dc">118e1c3d</a></strong>
<div>
<span>by Alp Mestanogullari</span>
<i>at 2020-07-14T21:30:52-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">compiler: re-engineer the treatment of rebindable if
Executing on the plan described in #17582, this patch changes the way if expressions
are handled in the compiler in the presence of rebindable syntax. We get rid of the
SyntaxExpr field of HsIf and instead, when rebindable syntax is on, we rewrite the HsIf
node to the appropriate sequence of applications of the local `ifThenElse` function.
In order to be able to report good error messages, with expressions as they were
written by the user (and not as desugared by the renamer), we make use of TTG
extensions to extend GhcRn expression ASTs with an `HsExpansion` construct, which
keeps track of a source (GhcPs) expression and the desugared (GhcRn) expression that
it gives rise to. This way, we can typecheck the latter while reporting the former in
error messages.
In order to discard the error context lines that arise from typechecking the desugared
expressions (because they talk about expressions that the user has not written), we
carefully give a special treatment to the nodes fabricated by this new renaming-time
transformation when typechecking them. See Note [Rebindable syntax and HsExpansion]
for more details. The note also includes a recipe to apply the same treatment to
other rebindable constructs.
Tests 'rebindable11' and 'rebindable12' have been added to make sure we report
identical error messages as before this patch under various circumstances.
We also now disable rebindable syntax when processing untyped TH quotes, as per
the discussion in #18102 and document the interaction of rebindable syntax and
Template Haskell, both in Note [Template Haskell quotes and Rebindable Syntax]
and in the user guide, adding a test to make sure that we do not regress in
that regard.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/64c774b043a2d9be3b98e445990c795f070dab3f">64c774b0</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-14T21:31:27-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Explain why keeping DynFlags in AnalEnv saves allocation.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/254245d01e3c1d4f9072abc4372fd3fb0a6ece9f">254245d0</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-14T21:32:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">docs/users-guide: Update default -funfolding-use-threshold value
This was changed in 3d2991f8 but I neglected to update the
documentation. Fixes #18419.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4c259f86938f4016f4bd4fde7a300fa83591036f">4c259f86</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-14T21:32:41-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Escape backslashes in json profiling reports properly.
I also took the liberty to do away the fixed buffer size for escaping.
Using a fixed size here can only lead to issues down the line.
Fixes #18438.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2379722438cb551210c4899119ade05989c17166">23797224</a></strong>
<div>
<span>by Sergei Trofimovich</span>
<i>at 2020-07-14T21:33:19-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">.gitlab: re-enable integer-simple substitute (BIGNUM_BACKEND)
Recently build system migrated from INTEGER_LIBRARY to BIGNUM_BACKEND.
But gitlab CI was never updated. Let's enable BIGNUM_BACKEND=native.
Bug: https://gitlab.haskell.org/ghc/ghc/-/issues/18437
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e0db878a789e58c2a1aba2e73d42857008174124">e0db878a</a></strong>
<div>
<span>by Sergei Trofimovich</span>
<i>at 2020-07-14T21:33:19-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">ghc-bignum: bring in sync .hs-boot files with module declarations
Before this change `BIGNUM_BACKEND=native` build was failing as:
```
libraries/ghc-bignum/src/GHC/Num/BigNat/Native.hs:708:16: error:
* Variable not in scope: naturalFromBigNat# :: WordArray# -> t
* Perhaps you meant one of these:
`naturalFromBigNat' (imported from GHC.Num.Natural),
`naturalToBigNat' (imported from GHC.Num.Natural)
|
708 | m' = naturalFromBigNat# m
|
```
This happens because `.hs-boot` files are slightly out of date.
This change brings in data and function types in sync.
Bug: https://gitlab.haskell.org/ghc/ghc/-/issues/18437
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c9f65c369a60467dcaf2b37d5f41f00565b4fe25">c9f65c36</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-14T21:33:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/Disassembler.c: Use FMT_HexWord for printing values in hex format
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/58ae62ebb5750e4dfbdb171efde8e3064b7afea8">58ae62eb</a></strong>
<div>
<span>by Matthias Andreas Benkard</span>
<i>at 2020-07-14T21:34:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">macOS: Load frameworks without stating them first.
macOS Big Sur makes the following change to how frameworks are shipped
with the OS:
> New in macOS Big Sur 11 beta, the system ships with a built-in
> dynamic linker cache of all system-provided libraries. As part of
> this change, copies of dynamic libraries are no longer present on
> the filesystem. Code that attempts to check for dynamic library
> presence by looking for a file at a path or enumerating a directory
> will fail. Instead, check for library presence by attempting to
> dlopen() the path, which will correctly check for the library in the
> cache. (62986286)
https://developer.apple.com/documentation/macos-release-notes/macos-big-sur-11-beta-release-notes/
Therefore, the previous method of checking whether a library exists
before attempting to load it makes GHC.Runtime.Linker.loadFramework
fail to find frameworks installed at /System/Library/Frameworks.
GHC.Runtime.Linker.loadFramework now opportunistically loads the
framework libraries without checking for their existence first,
failing only if all attempts to load a given framework from any of the
various possible locations fail.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cdc4a6b0f71bbd16a11f23e455b28c0c15720b38">cdc4a6b0</a></strong>
<div>
<span>by Matthias Andreas Benkard</span>
<i>at 2020-07-14T21:34:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">loadFramework: Output the errors collected in all loading attempts.
With the recent change away from first finding and then loading a
framework, loadFramework had no way of communicating the real reason
why loadDLL failed if it was any reason other than the framework
missing from the file system. It now collects all loading attempt
errors into a list and concatenates them into a string to return to
the caller.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/51dbfa52df483822b99bb191d2ffc0943954e1d3">51dbfa52</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T04:05:34-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">StgToCmm: Use CmmRegOff smart constructor
Previously we would generate expressions of the form
`CmmRegOff BaseReg 0`. This should do no harm (and really should be
handled by the NCG anyways) but it's better to just generate a plain
`CmmReg`.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ae11bdfd98a10266bfc7de9e16b500be220307ac">ae11bdfd</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T04:06:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add regression test for #17744
Test due to @monoidal.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0e3c277a6c82c5ab529771c1c493d86e7eda0a98">0e3c277a</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bump Cabal submodule
Updates a variety of tests as Cabal is now more strict about Cabal file
form.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ceed994acd07259ef3a780ab440185dbb26fff09">ceed994a</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Drop Windows Vista support, require Windows 7
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/00a23bfda4840546075ec2b2e18f61380b360dfc">00a23bfd</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update Windows FileSystem wrapper utilities.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/459e1c5f7c71e37ed8bb239c57bdec441d278fff">459e1c5f</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Use SlimReaderLocks and ConditonalVariables provided by the OS instead of emulated ones
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/763088fc3c14c8687685fe811eac13d216971840">763088fc</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Small linker comment and ifdef cleanups
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1a228ff9e04c91bc9b6f62942dc18bf1985a58a4">1a228ff9</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Flush event logs eagerly.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e9e04ddae1bf89902803d86282f41a586620c58f">e9e04dda</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Refactor Buffer structures to be able to track async operations
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/356dc3feae967b1c361130f1f356ef9ad6a693e4">356dc3fe</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Implement new Console API
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/90e69f779b6da755fac472337535a1321cbb7917">90e69f77</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add IOPort synchronization primitive
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/71245fcce24723910f12f934fbc4c700658b727a">71245fcc</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add new io-manager cmdline options
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d548a3b3058232cbfd588f6a2c2b9108bbe8d190">d548a3b3</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Init Windows console Codepage to UTF-8.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/58ef63668ec395aa7a2b250d9930641305d646e2">58ef6366</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add unsafeSplat to GHC.Event.Array
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d660725edbdaeef9be5da4c032e687276dd09b13">d660725e</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add size and iterate to GHC.Event.IntTable.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/050da6dd42d0cb293c7fce4a5ccdeb5abe1aadb4">050da6dd</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Switch Testsuite to test winio by default
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4bf542bf1cdf2fa468457fc0af21333478293476">4bf542bf</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Multiple refactorings and support changes.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4489af6bad11a198e9e6c192f41e17020f28d0c1">4489af6b</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: core threaded I/O manager
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/64d8f2fe2d27743e2986d2176b1aa934e5484d7a">64d8f2fe</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: core non-threaded I/O manager
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8da15a09955926c4617d3468b84b3f3ca414d48a">8da15a09</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix a scheduler bug with the threaded-runtime.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/84ea3d1492127442e2d416f1f576a5921186ada4">84ea3d14</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Relaxing some constraints in io-manager.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ccf0d1073969e3b73fed82cd421d74800f552953">ccf0d107</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix issues with non-threaded I/O manager after split.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b492fe6e4bde56341abbdb55d19fdf6e02ff70e9">b492fe6e</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove some barf statements that are a bit strict.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/01423fd205809e884fd9b7b69286108ca06a0d98">01423fd2</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Expand comments describing non-threaded loop
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4b69004f3c9518f59a8f0b6f7f77aa92bea85adf">4b69004f</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix FileSize unstat-able handles
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9b38427045b8f1621f607fa7ab9c6353aa479ac5">9b384270</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Implement new tempfile routines for winio
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f1e0be824523c6687e3d8588c46a57b2cd22ecc1">f1e0be82</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix input truncation when reading from handle.
This was caused by not upholding the read buffer invariant
that bufR == bufL == 0 for empty read buffers.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e176b625689563d2ccfbfec46e664d17824f1968">e176b625</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix output truncation for writes larger than buffer size
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a831ce0e7f0bbd8d81e96074e981fe1972fde6dd">a831ce0e</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Rewrite bufWrite.
I think it's far easier to follow the code now.
It's also correct now as I had still missed a spot
where we didn't update the offset.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6aefdf62b767b7828698c3ec5bf6a15e6e20eddb">6aefdf62</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix offset set by bufReadEmpty.
bufReadEmpty returns the bytes read *including* content that
was already buffered,
But for calculating the offset we only care about the number
of bytes read into the new buffer.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/750ebaeec06d7ee118abfbb29142c12fb31730cc">750ebaee</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Clean up code surrounding IOPort primitives.
According to phyx these should only be read and written once per
object. Not neccesarily in that order.
To strengthen that guarantee the primitives will now throw an
exception if we violate this invariant.
As a consequence we can eliminate some code from their primops.
In particular code dealing with multiple queued readers/writers
now simply checks the invariant and throws an exception if it
was violated. That is in contrast to mvars which will do things
like wake up all readers, queue multi writers etc.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ffd31db99f6fb8958900147035ddac9a47b7a764">ffd31db9</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix multi threaded threadDelay and a few other small changes.
Multithreaded threadDelay suffered from a race condition
based on the ioManagerStatus. Since the status isn't needed
for WIO I removed it completely.
This resulted in a light refactoring, as consequence we will always
wake up the IO manager using interruptSystemManager, which uses
`postQueuedCompletionStatus` internally.
I also added a few comments which hopefully makes the code easier to
dive into for the next person diving in.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6ec26df241d80e8e5cf39a02757c274067c8078d">6ec26df2</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">wionio: Make IO subsystem check a no-op on non-windows platforms.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/29bcd9363f2712524f7720377f19cb885adf2825">29bcd936</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Set handle offset when opening files in Append mode.
Otherwise we would truncate the file.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/55c29700fba3f35a80acd366b2f05b66464d8258">55c29700</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove debug event log trace
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9acb9f40d90b79da9e587022d73f8afb26a46463">9acb9f40</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix sqrt and openFile009 test cases
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/57017cb7454cbfaa1b011693e7fb141fbf519ccf">57017cb7</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Allow hp2ps to build with -DDEBUG
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8cd99951c8e21f82c3a95940de10128b78ab4ab">b8cd9995</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update output of T9681 since we now actually run it.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/10af5b1418554860e377b0df79026c2ea3669ab4">10af5b14</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: A few more improvements to the IOPort primitives.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/39afc4a785a37f238a9004b2f6882d1951953c07">39afc4a7</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix expected tempfiles output.
Tempfiles now works properly on windows, as such we can
delete the win32 specific output.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/99db46e09c50681e35de75d8bfec6cfb9ac3f9fc">99db46e0</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Assign thread labels to IOManager threads.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/be6af7324bcd918c61172f6814b8a70a6cfdd58e">be6af732</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Properly check for the tso of an incall to be zero.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e2c6dac783d6cb15217a3be196abeba6c6105588">e2c6dac7</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Mark FD instances as unsupported under WINIO.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fd02ceed5661e1c2fa85ec5c663697a3b0cf3e04">fd02ceed</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix threadDelay maxBound invocations.
Instead of letting the ns timer overflow now clamp it at
(maxBound :: Word64) ns. That still gives a few hundred
years.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bc79f9f180b3fc73fe25439faf9cc5f19622acb3">bc79f9f1</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add comments/cleanup an import in base
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1d197f4bbe5bf6d7189c329a742917db3f67ad34">1d197f4b</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Mark outstanding_service_requests volatile.
As far as I know C(99) gives no guarantees for code like
bool condition;
...
while(condition)
sleep();
that condition will be updated if it's changed by another thread.
So we are explicit here and mark it as volatile, this will force
a reload from memory on each iteration.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dc4381869748ec25ac9560bf7e89641b560b6862">dc438186</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Make last_event a local variable
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2fc957c52270d93073b7ed9fe42ac51fcd749a45">2fc957c5</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add comment about thread safety of processCompletion.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4c026b6cf5eb25651f656833e4d312621866330d">4c026b6c</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: nonthreaded: Create io processing threads in main thread.
We now set a flag in the IO thread. The scheduler when looking for work
will check the flag and create/queue threads accordingly.
We used to create these in the IO thread. This improved performance
but caused frequent segfaults. Thread creation/allocation is only safe to
do if nothing currently accesses the storeagemanager. However without
locks in the non-threaded runtime this can't be guaranteed.
This shouldn't change performance all too much.
In the past we had:
* IO: Create/Queue thread.
* Scheduler: Runs a few times. Eventually picks up IO processing thread.
Now it's:
* IO: Set flag to queue thread.
* Scheduler: Pick up flag, if set create/queue thread. Eventually picks up IO processing thread.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f47c7208c31bdd695ba46e6bdf4a349ae46c79bc">f47c7208</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add an exported isHeapAlloced function to the RTS
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cc5d7bb1dcf5603ac47320e83e4fc9ef53e409e9">cc5d7bb1</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Queue IO processing threads at the front of the queue.
This will unblock the IO thread sooner hopefully leading to higher
throughput in some situations.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e763011596ccafccdd476e1cac0ee6088d439e3b">e7630115</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: ThreadDelay001: Use higher resolution timer.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/451b5f96c8a3366584a62034747c8b78fc3b0486">451b5f96</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update T9681 output, disable T4808 on windows.
T4808 tests functionality of the FD interface which won't be supported
under WINIO.
T9681 just has it's expected output tweaked.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dd06f930a3228ef7ae8ea5c7225552d6df21f662">dd06f930</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:02-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Wake io manager once per registerTimeout.
Which is implicitly done in editTimeouts, so need to wake it
up twice.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e87d0bf9a430bf52a0068b9b53dcc4592c8da930">e87d0bf9</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update placeholder comment with actual function name.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fc9025db55345d6b427489b942878d781f70a039">fc9025db</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Always lock win32 event queue
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c24c9a1f2a10e044a31b7d89586f4a19ff61e137">c24c9a1f</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Display thread labels when tracing scheduler events.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/06542b033116bfc4b47c80bdeab44ed1d99005bb">06542b03</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Refactor non-threaded runner thread and scheduler interface.
Only use a single communication point (registerAlertableWait) to inform
the C side aobut both timeouts to use as well as outstanding requests.
Also queue a haskell processing thread after each return from alertable
waits. This way there is no risk of us missing a timer event.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/256299b13e17044d6904a85043130d13bc592a62">256299b1</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove outstanding_requests from runner.
We used a variable to keep track of situations where we got
entries from the IO port, but all of them had already been
canceled. While we can avoid some work that way this case
seems quite rare.
So we give up on tracking this and instead always assume at
least one of the returned entries is valid.
If that's not the case no harm is done, we just perform some
additional work. But it makes the runner easier to reason about.
In particular we don't need to care if another thread modifies
oustanding_requests after we return from waiting on the IO Port.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3ebd8ad9b1f7f77a928f2ff0d3e61ddfae068dd3">3ebd8ad9</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Various fixes related to rebase and testdriver
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6be6bcbac0e39537f3a40c615d1568a3d6391f9b">6be6bcba</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix rebase artifacts
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2c649dc3ba7b08817352eb24d9888651290b6eb6">2c649dc3</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Rename unsafeSplat to unsafeCopyFromBuffer
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a18b73f34dc3d177e76259bd65326a94824d97e0">a18b73f3</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove unused size/iterate operations from IntTable
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/16bab48ef69866725d2ab20ca7bd1da5f5a70000">16bab48e</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Detect running IO Backend via peeking at RtsConfig
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8b8405a0dd45c16ec305884cadda992327733621">8b8405a0</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: update temp path so GCC etc can handle it.
Also fix PIPE support, clean up error casting, fix memory leaks
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2092bc542516461eeb06d855dfbe9b04438767bc">2092bc54</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Minor comments/renamings
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a5b5b6c0de4e9ea2923beeff488e852aa247000a">a5b5b6c0</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Checking if an error code indicates completion is now a function.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/362176fd9189e73083fd2a2012c9b5be1e3fd05b">362176fd</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Small refactor in withOverlappedEx
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/32e20597b2fe5864b578c732501fe20d899e8f9c">32e20597</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: A few comments and commented out dbxIO
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a4bfc1d9ae59adc58a0df3b25f85873533481e94">a4bfc1d9</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Don't drop buffer offset in byteView/cwcharView
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b3ad2a54bf775e1ca110b501894891d4ccff3d8f">b3ad2a54</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: revert BHandle changes.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3dcd87e2fd6d03028d18bf1a61e526142ee9b8a1">3dcd87e2</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix imports
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5a3718909e8eb214d4a70082b7fee8d6f3efc975">5a371890</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: update ghc-cabal to handle new Cabal submodule bump
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d07ebe0df6df32bbffbf77ea09e39b6da2e8cbb3">d07ebe0d</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Only compile sources on Windows
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dcb423937a052496af73e34a315e3d15882b9f19">dcb42393</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Actually return Nothing on EOF for non-blocking read
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/895a3beb26de69f5611ea496dddb2b121c1dd5c1">895a3beb</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Deduplicate logic in encodeMultiByte[Raw]IO.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e06e6734a4d5c49c625605a2675c47fd93f834b2">e06e6734</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Deduplicate openFile logic
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b59430c00f41e18386bc44540180451169f6b9d7">b59430c0</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix -werror issue in encoding file
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f8d39a510c563271e26ec7175b8e538d0b6809da">f8d39a51</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Don't mention windows specific functions when building on Linux.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6a533d2afaab8b8ca0026c9af1a8ed9ff09c4462">6a533d2a</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: add a note about file locking in the RTS.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cf37ce3499a0367faf7fcaf014d8350e5864fe7a">cf37ce34</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add version to @since annotation
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0fafa2eb45d9283526c79f810476a369af21bf3b">0fafa2eb</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Rename GHC.Conc.IOCP -> GHC.Conc.WinIO
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1854fc23489baa39cb37f8d49ff74b7ee78d7de1">1854fc23</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Expand GHC.Conc.POSIX description
It now explains users may not use these functions when
using the old IO manager.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fcc7ba414e1dfab70136a824775421b26ce1b81a">fcc7ba41</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix potential spaceleak in __createUUIDTempFileErrNo
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6b3fd9fa15e75f646ac6eaa384f54afe853029f4">6b3fd9fa</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove redundant -Wno-missing-signatures pragmas
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/916fc861520615149c66c1069f6cb661bc8b8483">916fc861</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Make it explicit that we only create one IO manager
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f260a7218f71398ad2dbca0f47feaf31c21081b3">f260a721</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Note why we don't use blocking waits.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/aa0a4bbfbae0244313fa99862b97f71c15f9bd81">aa0a4bbf</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove commented out pragma
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d679b544e14ad912fddc97b1b735d3c2838a2c4b">d679b544</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove redundant buffer write in Handle/Text.hs:bufReadEmpty
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d3f94368cc27e124c07f9c3f90e3f9563a7fc55d">d3f94368</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Rename SmartHandles to StdHandles
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bd6b8ec1e775441fc943702e93d48ce75f155e9e">bd6b8ec1</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: add comment stating failure behaviour for getUniqueFileInfo.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/12846b85a94b2b73f456e4c441c7890d685deb67">12846b85</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update IOPort haddocks.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9f39fb14997f1aa3768c89bb8e83c6addc705d92">9f39fb14</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add a note cross reference
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/62dd5a7309f273b5bb7d6ab44a1d2745010c13a0">62dd5a73</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Name Haskell/OS I/O Manager explicitly in Note
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fa80782864895fe614e1b83416736014e68c8b35">fa807828</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Expand BlockedOnIOCompletion description.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f0880a1daea4f3c9fa6fa4624914081f29736ea2">f0880a1d</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove historical todos
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8e58e714e9a4b5fe77c4e71802cc4b9ad1998af3">8e58e714</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Update note, remove debugging pragma.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/aa4d84d556b39715ebc1a7860a620ec5a7d9beeb">aa4d84d5</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: flushCharReadBuffer shouldn't need to adjust offsets.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e580893ab8b76ff4b6582b1fb2ed55cc9742d5a2">e580893a</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Remove obsolete comment about cond. variables
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d54e9d7911901ee5bfcba43b2e4e1a4df11c670e">d54e9d79</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix initial linux validate build
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3cd4de46c1f31e2f044c671a4474126fc0d5a8da">3cd4de46</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix ThreadDelay001 CPP
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c88b1b9fde4eedcd1b62c51b1a53201ec3cf29c8">c88b1b9f</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix openFile009 merge conflict leftover
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/849e8889fe9586bf9e1bf37885537f25743383f2">849e8889</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Accept T9681 output.
GHC now reports String instead of [Char].
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e7701818e75b66957724f48c4aafac146699b667">e7701818</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix cabal006 after upgrading cabal submodule
Demand cabal 2.0 syntax instead of >= 1.20 as required by newer cabal versions.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a44f037372feac67793deb919d988468809ce470">a44f0373</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Fix stderr output for ghci/linking/dyn tests.
We used to filter rtsopts, i opted to instead just accept the warning of it having no effect.
This works both for -rtsopts, as well as -with-rtsopts which winio adds.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/515d98960d3cdcdd7d78a9f28d1b0ad39865c67f">515d9896</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Adjust T15261b stdout for --io-manager flag.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/949aaaccf34ef7e28a745081775b01627590fc46">949aaacc</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Adjust T5435_dyn_asm stderr
The warning about rtsopts having no consequences is expected.
So accept new stderr.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7d424e1e31a8f16e614947460e0e4e4b52f8b5cf">7d424e1e</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Also accept T7037 stderr
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1f0097683f65ee3cd917af843621ed73b5348e68">1f009768</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix cabal04 by filtering rts args
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/981a9f2e57728cdf39de9fc173b11be4084997d3">981a9f2e</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix cabal01 by accepting expected stderr
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b7b0464eb7a5510fde4a804402491ecad2f1092b">b7b0464e</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix safePkg01 by accepting expected stderr
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/32734b29cbe0450d27fa6b4ea67b05aff2c4919d">32734b29</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix T5435_dyn_gcc by accepting expected stderr
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/acc5cebf42e38c2b0869117329811c03c4e3f545">acc5cebf</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix tempfiles test on linux
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c577b789e8f76f81a99f1731700c27796effb598">c577b789</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Accept accepted stderr for T3807
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c108c52779a6423871ea372be82b94f5274e57da">c108c527</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Accept accepted stderr for linker_unload
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2b0b9a08a3412114f568fb26e3d684ccb7092f88">2b0b9a08</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Accept accepted stderr for linker_unload_multiple_objs
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/67afb03c45cf8a8dc9e51413cf187f36768a5a0b">67afb03c</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: clarify wording on conditional variables.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3bd415721672da9aa88c4528df8ba15bc616f3be">3bd41572</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: clarify comment on cooked mode.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ded58a037774147073366ff2dfdc8965e02a96e5">ded58a03</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: update lockfile signature and remove mistaken symbol in rts.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2143c49273d7d87ee2f3ef1211856d60b1427af1">2143c492</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-15T16:41:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add winio and winio_threaded ways
Reverts many of the testsuite changes
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c0979cc53442b3a6202acab9cf164f0a4beea0b7">c0979cc5</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-16T10:56:54-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Merge remote-tracking branch 'origin/wip/winio'
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/750a1595ef31cdc335f3bab045b2f19a9c43ff93">750a1595</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-18T07:26:41-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts: Add --copying-gc flag to reverse effect of --nonmoving-gc
Fixes #18281.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6ba6a881c58459008f02fb4816f8dec2800c2b73">6ba6a881</a></strong>
<div>
<span>by Hécate</span>
<i>at 2020-07-18T07:26:42-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Implement `fullCompilerVersion`
Follow-up of https://gitlab.haskell.org/ghc/ghc/-/issues/18403
This MR adds `fullCompilerVersion`, a function that shares the same
backend as the `--numeric-version` GHC flag, exposing a full,
three-digit version datatype.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e6cf27dfded59fe42bd6be323573c0d576e6204a">e6cf27df</a></strong>
<div>
<span>by Hécate</span>
<i>at 2020-07-18T07:26:43-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a Lint hadrian rule and an .hlint.yaml file in base/
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bcb177dd00c91d825e00ed228bce6cfeb7684bf7">bcb177dd</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-18T07:26:43-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Allow multiple case branches to have a higher rank type
As #18412 points out, it should be OK for multiple case alternatives
to have a higher rank type, provided they are all the same.
This patch implements that change. It sweeps away
GHC.Tc.Gen.Match.tauifyMultipleBranches, and friends, replacing it
with an enhanced version of fillInferResult.
The basic change to fillInferResult is to permit the case in which
another case alternative has already filled in the result; and in
that case simply unify. It's very simple actually.
See the new Note [fillInferResult] in TcMType
Other refactoring:
- Move all the InferResult code to one place, in GHC.Tc.Utils.TcMType
(previously some of it was in Unify)
- Move tcInstType and friends from TcMType to Instantiate, where it
more properly belongs. (TCMType was getting very long.)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5525a51900623e04ec914e9dcc7f4ad1fd3b528">e5525a51</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-18T07:26:43-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve typechecking of NPlusK patterns
This patch (due to Richard Eisenberg) improves
documentation of the wrapper returned by tcSubMult
(see Note [Wrapper returned from tcSubMult] in
GHC.Tc.Utils.Unify).
And, more substantially, it cleans up the multiplicity
handling in the typechecking of NPlusKPat
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/12f9035200424ec8104484f154a040d612fee99d">12f90352</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2020-07-18T07:26:45-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove {-# CORE #-} pragma (part of #18048)
This pragma has no effect since 2011.
It was introduced for External Core, which no longer exists.
Updates haddock submodule.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e504c9137dff2b8f51e8ed96b5cbb5a0d19f8e3a">e504c913</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-18T07:26:45-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Refactor the simplification of join binders
This MR (for #18449) refactors the Simplifier's treatment
of join-point binders.
Specifically, it puts together, into
GHC.Core.Opt.Simplify.Env.adjustJoinPointType
two currently-separate ways in which we adjust the type of
a join point. As the comment says:
-- (adjustJoinPointType mult new_res_ty join_id) does two things:
--
-- 1. Set the return type of the join_id to new_res_ty
-- See Note [Return type for join points]
--
-- 2. Adjust the multiplicity of arrows in join_id's type, as
-- directed by 'mult'. See Note [Scaling join point arguments]
I think this actually fixes a latent bug, by ensuring that the
seIdSubst and seInScope have the right multiplicity on the type
of join points.
I did some tidying up while I was at it. No more
setJoinResTy, or modifyJoinResTy: instead it's done locally in
Simplify.Env.adjustJoinPointType
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/49b265f08c7ac9c9dea6cfff0d67447728b7b416">49b265f0</a></strong>
<div>
<span>by Chaitanya Koparkar</span>
<i>at 2020-07-18T07:26:46-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix minor typos in a Core.hs note
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8d59aed6e9f494d6eae41c5ba32cde23cecaeb14">8d59aed6</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-18T07:26:47-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">GHCi: Fix isLittleEndian
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c26e81d116a653b5259aeb290fb1e697efe3382a">c26e81d1</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-18T07:26:47-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Mark ghci tests as fragile under unreg compiler
In particular I have seen T16012 fail repeatedly under the
unregisterised compiler.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/868e452340ade3155dd7e552c16bbb3c21c42b8a">868e4523</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-20T04:30:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Revert "AArch32 symbols only on aarch32."
This reverts commit cdfeb3f24f76e8fd30452016676e56fbc827789a.
Signed-off-by: Moritz Angermann <moritz.angermann@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c915ba84f4ec8c4f0f006bd6aa938d17936dcd93">c915ba84</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-20T04:30:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Revert "Fix (1)"
This reverts commit 7abffced01f5680efafe44f6be2733eab321b039.
Signed-off-by: Moritz Angermann <moritz.angermann@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/777c452a83ebdb2b50f3f328255a6f36ae49f398">777c452a</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-20T04:30:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Revert "better if guards."
This reverts commit 3f60b94de1f460ca3f689152860b108a19ce193e.
Signed-off-by: Moritz Angermann <moritz.angermann@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0dd405529f0f17cd9a5b299e7ae5539a885b4b5a">0dd40552</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-20T04:30:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Revert "[linker/rtsSymbols] More linker symbols"
This reverts commit 686e72253aed3880268dd6858eadd8c320f09e97.
Signed-off-by: Moritz Angermann <moritz.angermann@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30caeee75193ea961c55ee847a3156e23116e84e">30caeee7</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-21T06:39:33-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">DynFlags: remove use of sdocWithDynFlags from GHC.Stg.* (#17957)
* add StgPprOpts datatype
* remove Outputable instances for types that need `StgPprOpts` to be
pretty-printed and explicitly call type specific ppr functions
* add default `panicStgPprOpts` for panic messages (when it's not
convenient to thread StgPprOpts or DynFlags down to the ppr function
call)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/863c544c9849e49872acac64b8faea56a3311564">863c544c</a></strong>
<div>
<span>by Mark</span>
<i>at 2020-07-21T06:39:34-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix a typo in existential_quantification.rst</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/05910be1ac5c1f485132d2c8bd1ceb4f86e06db5">05910be1</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2020-07-21T14:47:07-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add release notes entry for #17816
[skip ci]
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a625719284db7c69fa3d122e829291a16960e85f">a6257192</a></strong>
<div>
<span>by Matthew Pickering</span>
<i>at 2020-07-21T14:47:19-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use a newtype `Code` for the return type of typed quotations (Proposal #195)
There are three problems with the current API:
1. It is hard to properly write instances for ``Quote m => m (TExp a)`` as the type is the composition
of two type constructors. Doing so in your program involves making your own newtype and
doing a lot of wrapping/unwrapping.
For example, if I want to create a language which I can either run immediately or
generate code from I could write the following with the new API. ::
class Lang r where
_int :: Int -> r Int
_if :: r Bool -> r a -> r a -> r a
instance Lang Identity where
_int = Identity
_if (Identity b) (Identity t) (Identity f) = Identity (if b then t else f)
instance Quote m => Lang (Code m) where
_int = liftTyped
_if cb ct cf = [|| if $$cb then $$ct else $$cf ||]
2. When doing code generation it is common to want to store code fragments in
a map. When doing typed code generation, these code fragments contain a
type index so it is desirable to store them in one of the parameterised
map data types such as ``DMap`` from ``dependent-map`` or ``MapF`` from
``parameterized-utils``.
::
compiler :: Env -> AST a -> Code Q a
data AST a where ...
data Ident a = ...
type Env = MapF Ident (Code Q)
newtype Code m a = Code (m (TExp a))
In this example, the ``MapF`` maps an ``Ident String`` directly to a ``Code Q String``.
Using one of these map types currently requires creating your own newtype and constantly
wrapping every quotation and unwrapping it when using a splice. Achievable, but
it creates even more syntactic noise than normal metaprogramming.
3. ``m (TExp a)`` is ugly to read and write, understanding ``Code m a`` is
easier. This is a weak reason but one everyone
can surely agree with.
Updates text submodule.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/58235d46bd4e9fbf69bd82969b29cd9c6ab051e1">58235d46</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-21T14:47:28-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">users-guide: Fix :rts-flag:`--copying-gc` documentation
It was missing a newline.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/19e80b9af252eee760dc047765a9930ef00067ec">19e80b9a</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2020-07-21T14:50:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Accumulate Haddock comments in P (#17544, #17561, #8944)
Haddock comments are, first and foremost, comments. It's very annoying
to incorporate them into the grammar. We can take advantage of an
important property: adding a Haddock comment does not change the parse
tree in any way other than wrapping some nodes in HsDocTy and the like
(and if it does, that's a bug).
This patch implements the following:
* Accumulate Haddock comments with their locations in the P monad.
This is handled in the lexer.
* After parsing, do a pass over the AST to associate Haddock comments
with AST nodes using location info.
* Report the leftover comments to the user as a warning (-Winvalid-haddock).
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4c719460611e7af44a67041c1707cb206d724d58">4c719460</a></strong>
<div>
<span>by David Binder</span>
<i>at 2020-07-22T20:17:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix dead link to haskell prime discussion
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f2f817e4c547657c25bb110199f6f0b6014f843b">f2f817e4</a></strong>
<div>
<span>by BinderDavid</span>
<i>at 2020-07-22T20:17:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Replace broken links to old haskell-prime site by working links to gitlab instance.
[skip ci]
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0bf8980ec86cab8d605149bbf47ed2361e2d389e">0bf8980e</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove length field from FastString
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1010c33bb8704fa55a82bc2601d5cae2e6ecc21f">1010c33b</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use ShortByteString for FastString
There are multiple reasons we want this:
- Fewer allocations: ByteString has 3 fields, ShortByteString just has one.
- ByteString memory is pinned:
- This can cause fragmentation issues (see for example #13110) but also
- makes using FastStrings in compact regions impossible.
Metric Decrease:
T5837
T12150
T12234
T12425
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8336ba78e00ec42521ba8314bc65ec766e6bcc7d">8336ba78</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Pass specialised utf8DecodeChar# to utf8DecodeLazy# for performance
Currently we're passing a indexWord8OffAddr# type function to
utf8DecodeLazy# which then passes it on to utf8DecodeChar#. By passing one
of utf8DecodeCharAddr# or utf8DecodeCharByteArray# instead we benefit from
the inlining and specialization already done for those.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7484a9a47ad277bb7e51c6357817f7e7c59e744a">7484a9a4</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Encoding: Add comment about tricky ForeignPtr lifetime
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5536ed28b676106810e65bac15305ad2b1b0babd">5536ed28</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use IO constructor instead of `stToIO . ST`
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5b8902e3975b8275b027b3d1cfe0d8cb8fdd3d13">5b8902e3</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Encoding: Remove redundant use of withForeignPtr
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5976a1614e3da7d77f624103bb67f602738e93b8">5976a161</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Encoding: Reformat utf8EncodeShortByteString to be more consistent
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9ddf161492194edb321b87b1977eda8264df35aa">9ddf1614</a></strong>
<div>
<span>by Daniel Gröber</span>
<i>at 2020-07-22T20:18:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">FastString: Reintroduce character count cache
Metric Increase:
ManyConstructors
Metric Decrease:
T4029
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e9491668640227a7ae7f6d0506d36af3a10cdd49">e9491668</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-22T20:18:46-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">get-win32-tarballs: Fix detection of missing tarballs
This fixes the error message given by configure when the user
attempts to configure without first download the win32 tarballs.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9f3ff8fd24b94c9d4a221e6aba3e21de42b0f02c">9f3ff8fd</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-22T20:19:22-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Enable BangPatterns, ScopedTypeVariables for ghc and hadrian by default.
This is only for their respective codebases.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0f17b930c164f3130caf2215484a8f5f8aa3cc63">0f17b930</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove unused "ncg" flag
This flag has been removed in 066b369de2c6f7da03c88206288dca29ab061b31
in 2011.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bab4ec8f62352a6361a5fd2cbdc5f12eca8928e7">bab4ec8f</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Don't panic if the NCG isn't built (it is always built)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8ea33edb2beb64cde7d51777787e232d4cd4fef1">8ea33edb</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove unused sGhcWithNativeCodeGen
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e079bb721e25dbc19e1adf8c8051b6ea03752962">e079bb72</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Correctly test active backend
Previously we used a platform settings to detect if the native code
generator was used. This was wrong. We need to use the
`DynFlags.hscTarget` field instead.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/735f9d6bac316a0c1c68a8b49bba465f07b01cdd">735f9d6b</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Replace ghcWithNativeCodeGen with a proper Backend datatype
* Represent backends with a `Backend` datatype in GHC.Driver.Backend
* Don't detect the default backend to use for the target platform at
compile time in Hadrian/make but at runtime. It makes "Settings"
simpler and it is a step toward making GHC multi-target.
* The latter change also fixes hadrian which has not been updated to
take into account that the NCG now supports AIX and PPC64 (cf
df26b95559fd467abc0a3a4151127c95cb5011b9 and
d3c1dda60d0ec07fc7f593bfd83ec9457dfa7984)
* Also we don't treat iOS specifically anymore (cf
cb4878ffd18a3c70f98bdbb413cd3c4d1f054e1f)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f7cc431341e5b5b31758eecc8504cae8b2390c10">f7cc4313</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:19:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Replace HscTarget with Backend
They both have the same role and Backend name is more explicit.
Metric Decrease:
T3064
Update Haddock submodule
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/15ce1804d2b87ac7bd55632957a4cb897decbbee">15ce1804</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-22T20:20:34-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Deprecate -fdmd-tx-dict-sel.
It's behaviour is now unconditionally enabled as
it's slightly beneficial.
There are almost no benchmarks which benefit from
disabling it, so it's not worth the keep this
configurable.
This fixes #18429.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ff1b7710c9975a3cc1025cb5b9d29197a5f1a98a">ff1b7710</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:21:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add test for #18064
It has been fixed by 0effc57d48ace6b719a9f4cbeac67c95ad55010b
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cfa89149b55837f822ba619b797781813fdcdabc">cfa89149</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2020-07-22T20:21:48-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Define type Void# = (# #) (#18441)
There's one backwards compatibility issue: GHC.Prim no longer exports
Void#, we now manually re-export it from GHC.Exts.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/02f40b0da2eadbf8a0e2930b95d4cef686acd92f">02f40b0d</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2020-07-22T20:22:23-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add regression test for #18478
!3392 backported !2993 to GHC 8.10.2 which most probably is responsible
for fixing #18478, which triggered a pattern match checker performance
regression in GHC 8.10.1 as first observed in #17977.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7f44df1ec6df2b02be83e41cec4dc3b5f7f540f0">7f44df1e</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-22T20:23:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Minor refactoring of Unit display
* for consistency, try to always use UnitPprInfo to display units to
users
* remove some uses of `unitPackageIdString` as it doesn't show the
component name and it uses String
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dff1cb3d9c111808fec60190747272b973547c52">dff1cb3d</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2020-07-23T07:55:29-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">[linker] Fix out of range relocations.
mmap may return address all over the place. mmap_next will ensure we get
the next free page after the requested address.
This is especially important for linking on aarch64, where the memory model with PIC
admits relocations in the +-4GB range, and as such we can't work with
arbitrary object locations in memory.
Of note: we map the rts into process space, so any mapped objects must
not be ouside of the 4GB from the processes address space.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cdd0ff16f20ce920c74f9128a1067cbe1bd378c2">cdd0ff16</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-24T18:12:23-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: restore console cp on exit
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c1f4f81d3a439cd1a8128e4ab11c7caac7cc0ad8">c1f4f81d</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-24T18:13:00-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: change memory allocation strategy and fix double free errors.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ba205046e4f2ea94b1c978c050b917de4daaf092">ba205046</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-24T18:13:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Care with occCheckExpand in kind of occurrences
Issue #18451 showed that we could get an infinite type, through
over-use of occCheckExpand in the kind of an /occurrence/ of a
type variable.
See Note [Occurrence checking: look inside kinds] in GHC.Core.Type
This patch fixes the problem by making occCheckExpand less eager
to expand synonyms in kinds.
It also improves pretty printing of kinds, by *not* suppressing
the kind on a tyvar-binder like
(a :: Const Type b)
where type Const p q = p. Even though the kind of 'a' is Type,
we don't want to suppress the kind ascription. Example: the
error message for polykinds/T18451{a,b}. See GHC.Core.TyCo.Ppr
Note [Suppressing * kinds].
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/02133353e712e98bfbbc6ed32305b137bb3654eb">02133353</a></strong>
<div>
<span>by Zubin Duggal</span>
<i>at 2020-07-25T00:44:30-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Simplify XRec definition
Change `Located X` usage to `XRec pass X`
This increases the scope of the LPat experiment to almost all of GHC.
Introduce UnXRec and MapXRec classes
Fixes #17587 and #18408
Updates haddock submodule
Co-authored-by: Philipp Krüger <philipp.krueger1@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e443846ba05c943877e193a9518d5817e15560f3">e443846b</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:07-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">DynFlags: store printer in TraceBinIfaceReading
We don't need to pass the whole DynFlags, just pass the logging
function, if any.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/15b2b44fe35292dc3ac93ec215c44fba42165f67">15b2b44f</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Rename GHC.Driver.Ways into GHC.Platform.Ways
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/342a01af624840ba94f22256079ff4f3cee09ca2">342a01af</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add GHC.Platform.Profile
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6333d7391068d8029eed3e8eff019b9e2c104c7b">6333d739</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Put PlatformConstants into Platform
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9dfeca6c2019fdb46613a68ccd6e650e40c7baac">9dfeca6c</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove platform constant wrappers
Platform constant wrappers took a DynFlags parameter, hence implicitly
used the target platform constants. We removed them to allow support
for several platforms at once (#14335) and to avoid having to pass
the full DynFlags to every function (#17957).
Metric Decrease:
T4801
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/73145d57f961c73b5853da7881d6a21e48e05909">73145d57</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove dead code in utils/derivConstants
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7721b923d53fb9eb93f80bb93b4c3bd976c05b4c">7721b923</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Move GHC.Platform into the compiler
Previously it was in ghc-boot so that ghc-pkg could use it. However it
wasn't necessary because ghc-pkg only uses a subset of it: reading
target arch and OS from the settings file. This is now done via
GHC.Platform.ArchOS (was called PlatformMini before).
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/459afeb592d5ff6d338184f5ef248758ecda57a4">459afeb5</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix build systems
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9e2930c3e18235fda2b8b468cb0fefbe7d65f879">9e2930c3</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bump CountParserDeps
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e2db34bdfead7ad309d8fd01d4423554650cf4c">6e2db34b</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-07-25T00:45:08-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add accessors to ArchOS
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fc0f6fbcd95f2dc69a8efabbee2d8a485c34cc47">fc0f6fbc</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-25T00:45:45-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Require SMP support in order to build a threaded stage1
Fixes 18266
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a7c4439a407ad85b76aab9301fda61e7c10183ff">a7c4439a</a></strong>
<div>
<span>by Matthias Andreas Benkard</span>
<i>at 2020-07-26T13:23:24-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Document loadFramework changes. (#18446)
Adds commentary on the rationale for the changes made in merge request
!3689.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/da7269a4472856ba701d956a247599f721e9915e">da7269a4</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-26T13:23:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/win32: Exit with EXIT_HEAPOVERFLOW if memory commit fails
Since switching to the two-step allocator, the `outofmem` test fails via
`osCommitMemory` failing to commit. However, this was previously exiting
with `EXIT_FAILURE`, rather than `EXIT_HEAPOVERFLOW`. I think the latter
is a more reasonable exit code for this case and matches the behavior on
POSIX platforms.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f153a1d0a3351ad4d94cef4cef8e63bab5b47008">f153a1d0</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-26T13:23:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Update win32 output for parseTree
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e91672f0b7185bbafbe8ed1f2ae2cb775111f950">e91672f0</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-26T13:23:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Normalise WinIO error message differences
Previously the old Windows IO manager threw different errors than WinIO.
We now canonicalise these to the WinIO errors.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9cbfe0868418a531da0872b0c477a15aa67f8861">9cbfe086</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-26T13:23:59-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Kill ssh-agent after pushing test metrics
Otherwise the Windows builds hang forever waiting for the process to
terminate.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8236925fc8cc2e6e3fed61a0676fa65270a4a538">8236925f</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-26T13:24:35-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: remove dead argument to stg_newIOPortzh
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ce0a1d678fbc8efa5fd384fd0227b7b3dc97cadd">ce0a1d67</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-26T13:25:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: fix detection of tty terminals
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/52685cf7c077c51e3719e3c4dd5ca8257a99c4ea">52685cf7</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-07-26T13:25:48-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: update codeowners
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/aee45d9ea8c6cf4ebad4d5c732748923c7865cbe">aee45d9e</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2020-07-27T07:06:56-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve NegativeLiterals (#18022, GHC Proposal #344)
Before this patch, NegativeLiterals used to parse x-1 as x (-1).
This may not be what the user expects, and now it is fixed:
x-1 is parsed as (-) x 1.
We achieve this by the following requirement:
* When lexing a negative literal,
it must not be preceded by a 'closing token'.
This also applies to unboxed literals, e.g. -1#.
See GHC Proposal #229 for the definition of a closing token.
A nice consequence of this change is that -XNegativeLiterals becomes a
subset of -XLexicalNegation. In other words, enabling both of those
extensions has the same effect as enabling -XLexicalNegation alone.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/667ab69e5edacb2ce2f42fb810cd54c8f856d30b">667ab69e</a></strong>
<div>
<span>by leiftw</span>
<i>at 2020-07-27T07:07:32-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">fix typo referring to non-existent `-ohidir` flag, should be `-hidir` I think</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6ff89c173f39813f74d7bbf95770c5e40039f155">6ff89c17</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2020-07-27T07:08:07-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Refactor the parser a little
* Create a dedicated production for type operators
* Create a dedicated type for the UNPACK pragma
* Remove an outdated part of Note [Parsing data constructors is hard]
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0624a8b0513ac42a53345457fbb3f38429e90514">0624a8b0</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-27T16:20:40-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Allow baseline commit to be set explicitly
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ec31a37c518785c69253e6d5627245b166f73e72">ec31a37c</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-07-27T16:20:40-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Use MR base commit as performance baseline
</pre>
</li>
</ul>
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compiler/GHC/Cmm/Utils.hs
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</li>
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<a href="#10b61652f9817945bb54ccf8fc40f8a664ca3c30">
compiler/GHC/CmmToAsm.hs
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<h5>The diff was not included because it is too large.</h5>
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