[Git][ghc/ghc][wip/T18234] 32 commits: Export indexError from GHC.Ix (#18579)
Ben Gamari
gitlab at gitlab.haskell.org
Fri Nov 27 17:04:55 UTC 2020
Ben Gamari pushed to branch wip/T18234 at Glasgow Haskell Compiler / GHC
Commits:
165352a2 by Krzysztof Gogolewski at 2020-11-20T02:08:36-05:00
Export indexError from GHC.Ix (#18579)
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b57845c3 by Kamil Dworakowski at 2020-11-20T02:09:16-05:00
Clarify interruptible FFI wrt masking state
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321d1bd8 by Sebastian Graf at 2020-11-20T02:09:51-05:00
Fix strictness signatures of `prefetchValue*#` primops
Their strictness signatures said the primops are strict in their first
argument, which is wrong: Handing it a thunk will prefetch the pointer
to the thunk, but not evaluate it. Hence not strict.
The regression test `T8256` actually tests for laziness in the first
argument, so GHC apparently never exploited the strictness signature.
See also https://gitlab.haskell.org/ghc/ghc/-/issues/8256#note_310867,
where this came up.
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0aec78b6 by Sebastian Graf at 2020-11-20T02:09:51-05:00
Demand: Interleave usage and strictness demands (#18903)
As outlined in #18903, interleaving usage and strictness demands not
only means a more compact demand representation, but also allows us to
express demands that we weren't easily able to express before.
Call demands are *relative* in the sense that a call demand `Cn(cd)`
on `g` says "`g` is called `n` times. *Whenever `g` is called*, the
result is used according to `cd`". Example from #18903:
```hs
h :: Int -> Int
h m =
let g :: Int -> (Int,Int)
g 1 = (m, 0)
g n = (2 * n, 2 `div` n)
{-# NOINLINE g #-}
in case m of
1 -> 0
2 -> snd (g m)
_ -> uncurry (+) (g m)
```
Without the interleaved representation, we would just get `L` for the
strictness demand on `g`. Now we are able to express that whenever
`g` is called, its second component is used strictly in denoting `g`
by `1C1(P(1P(U),SP(U)))`. This would allow Nested CPR to unbox the
division, for example.
Fixes #18903.
While fixing regressions, I also discovered and fixed #18957.
Metric Decrease:
T13253-spj
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3a55b3a2 by Sebastian Graf at 2020-11-20T02:09:51-05:00
Update user's guide entry on demand analysis and worker/wrapper
The demand signature notation has been undocumented for a long time.
The only source to understand it, apart from reading the `Outputable`
instance, has been an outdated wiki page.
Since the previous commits have reworked the demand lattice, I took
it as an opportunity to also write some documentation about notation.
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fc963932 by Greg Steuck at 2020-11-20T02:10:31-05:00
Find hadrian location more reliably in cabal-install output
Fix #18944
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9f40cf6c by Ben Gamari at 2020-11-20T02:11:07-05:00
rts/linker: Align bssSize to page size when mapping symbol extras
We place symbol_extras right after bss. We also need
to ensure that symbol_extras can be mprotect'd independently from the
rest of the image. To ensure this we round up the size of bss to a page
boundary, thus ensuring that symbol_extras is also page-aligned.
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b739c319 by Ben Gamari at 2020-11-20T02:11:43-05:00
gitlab-ci: Add usage message to ci.sh
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802e9180 by Ben Gamari at 2020-11-20T02:11:43-05:00
gitlab-ci: Add VERBOSE environment variable
And change the make build system's default behavior to V=0, greatly
reducing build log sizes.
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2a8a979c by Ben Gamari at 2020-11-21T01:13:26-05:00
users-guide: A bit of clean-up in profiling flag documentation
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56804e33 by Ben Gamari at 2020-11-21T01:13:26-05:00
testsuite: Refactor CountParserDeps
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53ad67ea by Ben Gamari at 2020-11-21T01:13:26-05:00
Introduce -fprof-callers flag
This introducing a new compiler flag to provide a convenient way to
introduce profiler cost-centers on all occurrences of the named
identifier.
Closes #18566.
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ecfd0278 by Sylvain Henry at 2020-11-21T01:14:09-05:00
Move Plugins into HscEnv (#17957)
Loaded plugins have nothing to do in DynFlags so this patch moves them
into HscEnv (session state).
"DynFlags plugins" become "Driver plugins" to still be able to register
static plugins.
Bump haddock submodule
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72f2257c by Sylvain Henry at 2020-11-21T01:14:09-05:00
Don't initialize plugins in the Core2Core pipeline
Some plugins can be added via TH (cf addCorePlugin). Initialize them in
the driver instead of in the Core2Core pipeline.
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ddbeeb3c by Ryan Scott at 2020-11-21T01:14:44-05:00
Add regression test for #10504
This issue was fixed at some point between GHC 8.0 and 8.2. Let's add a
regression test to ensure that it stays fixed.
Fixes #10504.
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a4a6dc2a by Ben Gamari at 2020-11-21T01:15:21-05:00
dwarf: Apply info table offset consistently
Previously we failed to apply the info table offset to the aranges and
DIEs, meaning that we often failed to unwind in gdb. For some reason
this only seemed to manifest in the RTS's Cmm closures. Nevertheless,
now we can unwind completely up to `main`
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69bfbc21 by Ben Gamari at 2020-11-21T01:15:56-05:00
hadrian: Disable stripping when debug information is enabled
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7e93ae8b by Ben Gamari at 2020-11-21T13:13:29-05:00
rts: Post ticky entry counts to the eventlog
We currently only post the entry counters, not the other global
counters as in my experience the former are more useful. We use the heap
profiler's census period to decide when to dump.
Also spruces up the documentation surrounding ticky-ticky a bit.
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bc9c3916 by Ben Gamari at 2020-11-22T06:28:10-05:00
Implement -ddump-c-backend argument
To dump output of the C backend.
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901bc220 by Ben Gamari at 2020-11-22T12:39:02-05:00
Bump time submodule to 1.11.1
Also bumps directory, Cabal, hpc, time, and unix submodules.
Closes #18847.
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92c0afbf by Ben Gamari at 2020-11-22T12:39:38-05:00
hadrian: Dump STG when ticky is enabled
This changes the "ticky" modifier to enable dumping of final STG as this
is generally needed to make sense of the ticky profiles.
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d23fef68 by Ben Gamari at 2020-11-22T12:39:38-05:00
hadrian: Introduce notion of flavour transformers
This extends Hadrian's notion of "flavour", as described in #18942.
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179d0bec by Ben Gamari at 2020-11-22T12:39:38-05:00
hadrian: Add a viaLlvmBackend modifier
Note that this also slightly changes the semantics of these flavours as
we only use LLVM for >= stage1 builds.
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d4d95e51 by Ben Gamari at 2020-11-22T12:39:38-05:00
hadrian: Add profiled_ghc and no_dynamic_ghc modifiers
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6815603f by Ben Gamari at 2020-11-22T12:39:38-05:00
hadrian: Drop redundant flavour definitions
Drop the profiled, LLVM, and ThreadSanitizer flavour definitions as
these can now be realized with flavour transformers.
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f88f4339 by Ben Gamari at 2020-11-24T02:43:20-05:00
rts: Flush eventlog buffers from flushEventLog
As noted in #18043, flushTrace failed flush anything beyond the writer.
This means that a significant amount of data sitting in capability-local
event buffers may never get flushed, despite the users' pleads for us to
flush.
Fix this by making flushEventLog flush all of the event buffers before
flushing the writer.
Fixes #18043.
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7c03cc50 by Ben Gamari at 2020-11-24T02:43:55-05:00
gitlab-ci: Run LLVM job on appropriately-labelled MRs
Namely, those marked with the ~"LLVM backend" label
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9b95d815 by Ben Gamari at 2020-11-24T02:43:55-05:00
gitlab-ci: Run LLVM builds on Debian 10
The current Debian 9 image doesn't provide LLVM 7.
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2ed3e6c0 by Ben Gamari at 2020-11-24T02:43:55-05:00
CmmToLlvm: Declare signature for memcmp
Otherwise `opt` fails with:
error: use of undefined value '@memcmp$def'
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063738a0 by Sylvain Henry at 2020-11-27T11:34:37+01:00
Hadrian: fix detection of ghc-pkg for cross-compilers
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6b15938b by Sylvain Henry at 2020-11-27T12:04:42-05:00
hadrian: fix ghc-pkg uses (#17601)
Make sure ghc-pkg doesn't read the compiler "settings" file by passing
--no-user-package-db.
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4c3cee5b by Ben Gamari at 2020-11-27T12:04:42-05:00
gitlab-ci: Introduce a nightly cross-compilation job
This adds a job to test cross-compilation from x86-64 to AArch64 with
Hadrian.
Fixes #18234
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30 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- compiler/GHC.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/Core/Lint.hs
- + compiler/GHC/Core/Opt/CallerCC.hs
- + compiler/GHC/Core/Opt/CallerCC.hs-boot
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/SetLevels.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/WorkWrap/Utils.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/CoreToStg/Prep.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Monad.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Monad.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/HsToCore.hs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b789f5f997f1873116c52486198520db1abea2e6...4c3cee5b2409ac875d0365a4e0f98cfc5850a9f4
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b789f5f997f1873116c52486198520db1abea2e6...4c3cee5b2409ac875d0365a4e0f98cfc5850a9f4
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