Timeline


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Dec 28, 2012:

7:41 PM Changeset in ghc [9efd621]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Add the improvement step, for more direct evaluation. Previously we relied on derived constraints to achieve the same, but this is (i) more direct, (ii) using derived constraints delayed evaluation too much, so we ended up interacting constraints that can be solved with existing assumptions, which may lead to non-termination because it generates infinitely many useless constraints.
6:19 PM Ticket #7536 (Panic with TypeFamilies with type synonym instances) created by snowleopard
The code below brings GHC to panic. […] Panic details: […] Can …
4:13 PM Ticket #7535 (Using -with-rtsopts=-N should fail unless -threaded is also specified) created by mhoermann
If ghc can already tell at compile time that the specified -with-rtsopts …
8:13 AM Changeset in base [040313e]data-proxydbcsghc-7.8type-reasoning by Joey Adams <joeyadams3.14159@…>
BufferedIO: fix bug in writeBufNonBlocking introduced by commit 7d39e100 bufferAdjustL does nothing but update bufL, and set bufL = bufR = 0 when bufL == bufR. It ignores the old bufL. writeBufNonBlocking is currently unused. It is only used to implement flushWriteBuffer0, which is never called by base (hPutBufNonBlocking uses a blocking flush).
8:13 AM Changeset in ghc [0862dcc5]wip/T9016 by Joey Adams <joeyadams3.14159@…>
BufferedIO: fix bug in writeBufNonBlocking introduced by commit 7d39e100 bufferAdjustL does nothing but update bufL, and set bufL = bufR = 0 when bufL == bufR. It ignores the old bufL. writeBufNonBlocking is currently unused. It is only used to implement flushWriteBuffer0, which is never called by base (hPutBufNonBlocking uses a blocking flush).
8:13 AM Changeset in base [cb6f03d]data-proxydbcsghc-7.8type-reasoning by Joey Adams <joeyadams3.14159@…>
GHC.IO.Buffer: use memmove instead of memcpy in slideContents
8:13 AM Changeset in ghc [d7b5f524]wip/T9016 by Joey Adams <joeyadams3.14159@…>
GHC.IO.Buffer: use memmove instead of memcpy in slideContents

Dec 27, 2012:

9:46 AM Ticket #7534 (allocateRegsAndSpill: Cannot read from uninitialized register) created by erikd
Building git HEAD on linux-powerpc64 and I get: […]

Dec 26, 2012:

11:29 PM Ticket #7533 (References to very old GHC in the docs) created by benmachine
It's probably safe not to warn people that things are new in GHC 6.6 these …
7:00 PM Ticket #7527 (Couldn't match kind `*' with `*' with PolyKinds & GADTs.) closed by goldfire
fixed: Fixed in HEAD: […] Are you claiming that this should type check? Or, …
5:49 PM Ticket #7532 (-ddump-splices output doesn't match generated code for data instances ...) created by Aninhumer
Using the following code: […] […] When compiling the second file in …
5:05 AM Changeset in ghc [f557bf3]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Fixes to restore proper operation of widening function. We need to be careful when we use BRules in interaction: unlike axiom rules, using them does not always result in useful information---in fact often it results in trivial facts. Furthermore, we have to be careful not to disable an interaction with an existing assumption (i.e., if we apply a rule to bRule, we should also keep a copy around in case the same slot might be filled by an assumption). At present, we only interact the BRules after we've tried all assumptions: this reduces the number of useless facts we construct, but is sufficient for the main use case of interacting with BRules, namely improvements of the form: a + 0 ~ b => a ~ b.
4:59 AM Changeset in ghc [240cd84]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
A function to get all constraints (unused at the moment)
4:58 AM Changeset in ghc [c19c2fa]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Update debug functions for new name/location of unsafeGlobalDynFlags
4:57 AM Changeset in ghc [3cbfe4fe]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Limit debugging output to when there's something to report.

Dec 25, 2012:

9:53 PM Changeset in ghc [7c7328bb]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Add support for improving with basic rules, and simplify things a bit.
9:14 PM Changeset in ghc [520d502d]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Add TyThing entries for all rules.
7:51 PM Changeset in ghc [4e6f3e87]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Add `TnExp0L` to iff rules.
7:43 PM Changeset in ghc [f200e2e]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Add the second half of the rules for subtraction (SubE/SubI).
6:37 PM Ticket #7531 (after manualy installing array-0.4.0.1) created by guest
After manually installing array-0.4.0.1 installation manually of Cabal …
6:10 PM Ticket #7529 (Crash when using (->) instead of (=>) in a typeclass instance) closed by monoidal
duplicate: Thanks for the report, the bug is already fixed in GHC 7.6.1, see #5951. …
4:05 PM Ticket #7530 (Proposal: Add isLeft/isRight to Data.Either) created by SimonHengel
I propose to add isLeft/isRight to Data.Either. The …
2:50 PM Ticket #7529 (Crash when using (->) instead of (=>) in a typeclass instance) created by Helkafen
import qualified Data.Vector as V import Test.QuickCheck? import …
2:32 PM Ticket #7528 (Non terminating thunk resolution blocks world, even in the case of forkOS) created by timthelion
Please see: http://comments.gmane.org/gmane.comp.lang.haskell.cafe/102479
6:15 AM Ticket #7527 (Couldn't match kind `*' with `*' with PolyKinds & GADTs.) created by Ashley Yakeley
[…] […]

Dec 24, 2012:

6:03 PM Ticket #7526 (Minor typo in error message) created by parcs
Compiling the following snippet […] gives the following error message …
4:01 PM Changeset in ghc [2f784e3b]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Don't run T7507 in ghci
4:01 PM Changeset in testsuite [cc59fbaf]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Don't run T7507 in ghci
3:57 PM Ticket #4321 (Unexpected stack overflow prevented by superfluous type annotation) closed by simonpj
fixed: In the end, the patch to #7507 fixed this too. Simon
3:55 PM Ticket #7507 (loop fusion not working for Int32, Int64 as it does for Int ?) closed by simonpj
fixed: See also #4321. Fixed by this patch to base: […]
3:53 PM Changeset in ghc [77dc6948]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Test Trac #7507
3:53 PM Changeset in testsuite [c271ee47]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Test Trac #7507
2:44 PM Changeset in base [06e36c6]data-proxydbcsghc-7.8type-reasoning by Simon Peyton Jones <simonpj@…>
Make sum and product INLINABLE This was causing the bad behaviour in Trac #7507, because 'sum' wasn't getting specialised to Int64. It also deals with Trac #4321, which had the same cause. This has a big effect on some nofib programs too: -------------------------------------------------------------------------------- Program Allocs Runtime Elapsed TotalMem ------------------------------------------------------------------------ bernouilli -2.6% -2.0% -2.0% +0.0% fft2 -23.8% 0.09 0.09 -16.7% fluid -4.4% 0.01 0.01 +0.0% hidden -3.2% +2.1% +1.8% +0.0% integrate -38.0% -47.7% -47.7% -1.0% x2n1 -30.2% 0.01 0.01 -50.0% ------------------------------------------------------------------------ Min -38.0% -47.7% -47.7% -50.0% Max +0.4% +11.2% +11.8% +6.9% Geometric Mean -1.3% +0.2% +0.2% -0.8%
2:44 PM Changeset in ghc [f251bf5]wip/T9016 by Simon Peyton Jones <simonpj@…>
Make sum and product INLINABLE This was causing the bad behaviour in Trac #7507, because 'sum' wasn't getting specialised to Int64. It also deals with Trac #4321, which had the same cause. This has a big effect on some nofib programs too: -------------------------------------------------------------------------------- Program Allocs Runtime Elapsed TotalMem ------------------------------------------------------------------------ bernouilli -2.6% -2.0% -2.0% +0.0% fft2 -23.8% 0.09 0.09 -16.7% fluid -4.4% 0.01 0.01 +0.0% hidden -3.2% +2.1% +1.8% +0.0% integrate -38.0% -47.7% -47.7% -1.0% x2n1 -30.2% 0.01 0.01 -50.0% ------------------------------------------------------------------------ Min -38.0% -47.7% -47.7% -50.0% Max +0.4% +11.2% +11.8% +6.9% Geometric Mean -1.3% +0.2% +0.2% -0.8%
2:07 PM Changeset in ghc [3a2ce0b]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite Conflicts: tests/typecheck/should_fail/all.T
2:07 PM Changeset in testsuite [d961a51]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite Conflicts: tests/typecheck/should_fail/all.T
2:04 PM Changeset in ghc [53a3f0d]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Bump the residency of T4801 Residency is a very wobbly number; it depends on GC sampling time. So I don't think this is a real regression.
2:04 PM Changeset in testsuite [349493e]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Bump the residency of T4801 Residency is a very wobbly number; it depends on GC sampling time. So I don't think this is a real regression.
1:43 PM Changeset in ghc [545fd8b]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Make the treatment of addAltUnfoldings handle casts This minor refactoring re-attaches Note [Add unfolding for scrutinee]. It had become detached, which led me on a bit of a wild goose chase. While I was at it, I made the code work right for the case where the scrutinee is of form (x |> co); I don't think this is an important improvement. I also make simplAlt unconditionally zap occurrence information on case-alternative binders (see Note [Case alternative occ info]); it was almost always being zapped and the additional complexity seems not worth it.
1:25 PM Changeset in ghc [bacf7ca0]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Make combine-identical-alternatives work again (Trac #7360) Move the "combine indentical alternatives" transformation *before* simplifying the alternatives. For example case x of y [] -> length y (_:_) -> length y } If we look *post* simplification, since 'y' is used in the alterantives, the case binders *might* be (see the keep_occ_info test in Simplify.simplAlt); and hence the combination of the two alteranatives does not happen. But if we do it *pre* simplification there is no problem. This fixes Trac #7360.
1:20 PM Changeset in ghc [89eb9e92]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Add traceSmpl for simplifier tracing, now that the simplifier has the IO monad
11:34 AM Changeset in ghc [9ea2b66]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Simplify the binder-swap transformation The occurrence analyser implements the "binder-swap" transformation, described in Note [Binder swap] in OccAnal. For some reason I had implemeted an extremely complicated version, I believe intended to get as much as possible done in single simplifier pass. But it turned out (Trac #7258) that the 'getProxies' bit of this complicated code scaled rather non-linearly, and all by itself could consume half of the entire compile time. The patch dramatically simplifies the transformation, so that we simply swizzle case x of y { I# v -> e } to case x of y { I# v -> let x = y in e } I can't see any reason not to do this * Compiler allocation for #7258 with 200 fields goes down by 25% and compile time by 20% * The nofib figures do not budge * Quite a bit of complicated code goes away
11:20 AM Changeset in ghc [e661e290]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Comment typo only
10:55 AM Changeset in ghc [49bfb631]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Wibble to debug output
10:55 AM Changeset in testsuite [7f9bd37]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Wibble to debug output
10:08 AM Commentary/Compiler/CodeGen edited by ezyang
(diff)
10:06 AM Commentary/Compiler/CodeGen edited by ezyang
old is gone (diff)
9:50 AM Changeset in ghc [1f7d26b2]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite
9:50 AM Changeset in testsuite [07c0058]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite
9:50 AM Changeset in base [f07215b]data-proxydbcsghc-7.8type-reasoning by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/packages/base
9:50 AM Changeset in ghc [5d608279]wip/T9016 by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/packages/base
9:49 AM Changeset in ghc [7cc8a3c]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/ghc
9:49 AM Changeset in ghc [62a3c50a]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Test Trac #7525
9:49 AM Changeset in testsuite [fb2d741]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Test Trac #7525
9:46 AM Changeset in ghc [1d07cc0]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Remember to zonk when taking free variables in simpl_top Forgetting this meant that we were upating the same meta-tyvar twice. Fixes Trac #7525.
9:38 AM Changeset in ghc [e9e650d]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
A bit more tracing

Dec 23, 2012:

3:51 PM Changeset in ghc [29696e3]ghc-7.8wip/Cabal-1.20wip/T8545-ghc-7.8wip/T8776wip/T8995-level-generalisationwip/T9016wip/nested-cprwip/pattern-synonymswip/recurs-compat by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite
3:51 PM Changeset in testsuite [b14391f]atomicsdata-kind-syntaxoverlapping-tyfamsth-newtype-natstype-nats-simplewip/nested-cprwip/pattern-synonymswip/th-new by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/testsuite
3:49 PM Changeset in ghc [e5ccb4ee]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Merge branch 'master' of http://darcs.haskell.org/ghc Conflicts: compiler/basicTypes/MkId.lhs compiler/iface/IfaceSyn.lhs
3:44 PM Ticket #7525 (Compiler panic with ill-typed code using implicit parameters) created by parcs
The following snippet produces a compiler panic with GHC 7.7.20121221: …
3:38 PM Changeset in ghc [1ee1cd4]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Simon Peyton Jones <simonpj@…>
Make {-# UNPACK #-} work for type/data family invocations This fixes most of Trac #3990. Consider data family D a data instance D Double = CD Int Int data T = T {-# UNPACK #-} !(D Double) Then we want the (D Double unpacked). To do this we need to construct a suitable coercion, and it's much safer to record that coercion in the interface file, lest the in-scope instances differ somehow. That in turn means elaborating the HsBang type to include a coercion. To do that I moved HsBang from BasicTypes to DataCon, which caused quite a few minor knock-on changes. Interface-file format has changed! Still to do: need to do knot-tying to allow instances to take effect within the same module.
12:59 PM Changeset in ghc [d2a5a9cf]atomicsbetter-ho-cardinalitycardinalitycoercibledata-kind-syntaxdecision-procedureghc-7.8ghc-lwc2ghc-parmake-gsoclate-dmdlate-lam-liftnew-demand-to-mergeoverlapping-tyfamssimdtc-arrowsth-newticky-for-all-letstype-natstype-nats-simplewip/Cabal-1.20wip/T7704wip/T8545-ghc-7.8wip/T8592wip/T8776wip/T8995-level-generalisationwip/T9016wip/cbv-conv-thunkwip/common-contextwip/cpr-vs-jpwip/exprAritywip/nested-cprwip/pattern-synonymswip/recurs-compatwip/simdwip/th-new by Ross Paterson <ross@…>
rename do_map_arrow as do_premap (no semantic change)
5:22 AM NewAxioms edited by goldfire
(diff)
4:07 AM Ticket #7524 (Erroneous repeated kind variable in conflicting type family instance error ...) created by goldfire
Consider the following code: […] GHC correctly complains that these …
1:39 AM Changeset in ghc [b03bc4a8]type-nats by Iavor S. Diatchki <iavor.diatchki@…>
Merge remote-tracking branch 'origin/master' into type-nats Conflicts: compiler/coreSyn/TrieMap.lhs compiler/iface/IfaceSyn.lhs compiler/iface/IfaceType.lhs compiler/iface/TcIface.lhs compiler/prelude/PrelNames.lhs compiler/prelude/TysPrim.lhs compiler/prelude/TysWiredIn.lhs compiler/typecheck/TcEvidence.lhs compiler/types/Type.lhs compiler/types/TypeRep.lhs
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