- Sep 13, 2023
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Issue #23922 showed that GHC was bogusly eta-reducing a join point. We should never eta-reduce (\x -> j x) to j, if j is a join point. It is extremly difficult to trigger this bug. It took me 45 mins of trying to make a small tests case, here immortalised as T23922a.
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When the user adds a SPEC argument to a function, they are informing us that they expect the function to be specialised. However, previously this instruction could be preempted by the specialised-argument limit (sc_max_args). Fix this. This fixes #14003.
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canEtaReduceToArity was only called internally, and always with two arguments equal to zero. This patch just specialises the function, and renames it to cantEtaReduceFun. No change in behaviour.
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This -fno-cse change is to avoid these performance tests depending on flukey CSE stuff. Each contains several independent tests, and we don't want them to interact. See #23925. By killing CSE we expect a 400% increase in T15426, and 100% in T18964. Metric Increase: T15426 T18964 -
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Refs #23919
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- Sep 12, 2023
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The warning fires when inconsistent command line flags are passed. For example: * -dynamic-too and -dynamic * -dynamic-too on windows * -O and --interactive * etc This is on by default and allows users to control whether the warning is displayed and whether it should be an error or not. Fixes #22572
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Patch by Simon
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- Tests using Setup programs need to pass --with-hc-pkg - Several other fixes See https://gitlab.haskell.org/ghc/ghc/-/wikis/javascript-backend/bug_triage for the current status
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This makes it possible to review changes with conventional diffing tools. This is picking up where ad8cfed4195b1bbfc15b841f010e75e71f63157d left off.
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This bumps the minumum supported version to 10.13 (High Sierra) which is 6 years old at this point. Fixes #22938
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Fixes #23914. Also adds a check to STG lint that these args are properly unary or nullary after unarisation
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Fixes #23686
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Supplement the existing power 2 sized nonmoving allocators with a family of dense allocators up to a configurable threshold. This should reduce waste from rounding up block sizes while keeping the amount of allocator sizes manageable. This patch: - Adds a new configuration option `--nonmoving-dense-allocator-count` to control the amount of these new dense allocators. - Adds some constants to `NonmovingAllocator` in order to keep marking fast with the new allocators. Resolves #23340 -
It makes sense to have these beside each other as they are aliases.
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- Sep 09, 2023
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- Sep 08, 2023
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This adds builds for the latest releases for fedora and debian We build these bindists in nightly and release pipelines.
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Fixes #22012 by adding the symbols described in https://github.com/llvm/llvm-project/blob/main/llvm/docs/Atomics.rst#libcalls-atomic. Ultimately this would be better addressed by #22011, but this is a first step in the right direction and fixes the immediate symptom. Note that we dropped the `__arch64_cas16` operations as these provided by all platforms's compilers. Also, we don't link directly against the libgcc/compiler-rt definitions but rather provide our own wrappers to work around broken toolchains (e.g. https://bugs.gentoo.org/868018). Generated via ghc/ghc$5733.
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See #22012.
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I suspect this code is dead since we haven't observed this failing despite the obviously incorrect macro name.
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Resolves #23829. The stage violation results in out-of-bound names in splices. Technically this is an error, but someone might rely on this!? Internal changes: - we now track stages for TyVars. - thLevel (RunSplice _) = 0, instead of panic, as reifyInstances does in fact rename its argument type, and it can contain variables.
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The code (from T23465.hs) {-# WARNInG in "x-c" e "d" #-} e = e gives an incorrect span for the LWarnDecl GhcPs Closes #23892 It also fixes the Test23465/Test23464 mixup -
Based on @simonpj's draft and comments in !11117
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after any defaulting has taken place, to avoid a defaulting plugin seeing a metavariable that has already been filled. Fixes #23821.
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- Sep 07, 2023
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In the Lint failure in #23938, we start with a coercion Refl :: T a ~R T a, and call mkSelCo (SelTyCon 1 nominal) Refl. The function incorrectly returned Refl :: a ~R a. The returned role should be nominal, according to the SelCo rule: co : (T s1..sn) ~r0 (T t1..tn) r = tyConRole tc r0 i ---------------------------------- SelCo (SelTyCon i r) : si ~r ti In this test case, r is nominal while r0 is representational. -
Removes the fake export of `FUN` from Prelude. Fixes #23920. Bumps haddock submodule.
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In T13343.hs, the location for the @ is not within the span of the surrounding UserTyVar. type Bad @v = (forall (v1 :: RuntimeRep) (a1 :: TYPE v). a1) :: TYPE v Widen it so it is captured. Closes #23887
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- Sep 06, 2023
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- Sep 05, 2023
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Fixes #23930
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We were previously just checking whether direct package dependencies had been modified. This caused issues when compiling without optimisations as we wouldn't relink the direct dependency if one of its dependenices changed. Fixes #23724
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The example given in the SafeHaskell section uses an implementation of Monad which no longer works. This MR removes the non-canonical return instance and adds the necessary instances of Functor and Applicative.
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- Sep 01, 2023
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Fixes #23797.
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