[Git][ghc/ghc][wip/9.2.7-backports] 2 commits: Hadrian: Enable SMP on powerpc64{le}
Zubin (@wz1000)
gitlab at gitlab.haskell.org
Fri Feb 17 11:17:32 UTC 2023
Zubin pushed to branch wip/9.2.7-backports at Glasgow Haskell Compiler / GHC
Commits:
43393af6 by Peter Trommler at 2023-02-17T16:47:22+05:30
Hadrian: Enable SMP on powerpc64{le}
Fixes #19825
(cherry picked from commit 7cfa6f3114168797cf1fa7faa4ffe6c06b73f149)
- - - - -
a567c4d7 by Zubin Duggal at 2023-02-17T16:47:22+05:30
Allow metric changes for 9.2.7 as baseline is from a release pipeline
Metric Decrease:
haddock.base
haddock.Cabal
haddock.compiler
Metric Increase:
ManyAlternatives
ManyConstructors
T10421
T10858
T12227
T12425
T12707
T13035
T13253
T13719
T15164
T16577
T18304
T18698a
T18698b
T3294
T5321FD
T5642
T9203
T9233
T9630
T9872a
T9872b
T9872c
T9872d
T14697
T12545
(cherry picked from commit 67ec973ce40d8a66d48c0f5f40458380957b6e6f)
- - - - -
2 changed files:
- docs/users_guide/9.2.7-notes.rst
- hadrian/src/Oracles/Flag.hs
Changes:
=====================================
docs/users_guide/9.2.7-notes.rst
=====================================
@@ -1,6 +1,6 @@
-.. _release-9-2-6:
+.. _release-9-2-7:
-Version 9.2.6
+Version 9.2.7
==============
The significant changes to the various parts of the compiler are listed in the
@@ -9,100 +9,29 @@ following sections.
The :ghc-flag:`LLVM backend <-fllvm>` of this release is to be used with LLVM
9, 10, 11, or 12.
-Compiler
---------
-
-- Fix a regression in the simplifier due to a bad backport in GHC 9.2.5 that
- could seriously impact runtime performance when compiling with optimisations
- due to duplication of expensive work (:ghc-ticket:`22425`).
-
-- Fix a compiler panic in the simplifier due to a bad backport in GHC 9.2.5
- (:ghc-ticket:`22491`).
-
-- Fix a compiler panic in the simplifier that manifests when compiling with
- optimisations (:ghc-ticket:`19824`,:ghc-ticket:`22482`).
-
-- Fix a compiler panic in the demand analyser due to a bug involving shadowing
- (:ghc-ticket:`22718`).
-
-- Fix a compiler panic during the "Float In" optimsation pass due to improper
- handling of shadowing (:ghc-ticket:`22662`).
-
-- Fix a compiler panic in the demand analyser (:ghc-ticket:`22039`).
-
-- Fix a shadowing related bug in the occurence analysis phase of the simplifier
- (:ghc-ticket:`22623`).
-
-- Fix a compiler bug where programs using Template Haskell involving Constant
- Applicative forms could be garbage collected too early (:ghc-ticket:`22417`).
-
-- Fix a regression in the typechecker where certain typeclass instances
- involving type and data familes would fail to resolve (:ghc-ticket:`22647`).
-
-- Fix the linker warning about chained fixups on Darwin platforms for programs
- compiled with GHC (:ghc-ticket:`22429`).
-
-- Fix a bug with the graph-colouring register allocater leading to compiler
- panics when compiling with ``-fregs-graph`` (:ghc-ticket:`22798`).
-
-- Fix a parser bug where certain keywords which could be used as variables
- were not allowed to be used with :extension:`OverloadedRecordDot`
- (:ghc-ticket:`20723`).
-
-- Fix the location of some ``Typeable`` definitions from ``GHC.Types`` which
- resulted in poor error messages (:ghc-ticket:`22510`).
-
-- Improve error messages involving non-exhaustive patterns when using
- :extension:`ApplicativeDo` (:ghc-ticket:`22483`).
-
-- Fix a driver bug where certain non-fatal Safe Haskell related warnings were
- being marked as fatal (:ghc-ticket:`22728`).
-
-- Fix a core lint error arises from incorrect scoping of type variables in
- specialise pragmas inside class instances (:ghc-ticket:`22913`).
-
-- Improve typchecker performance for modules with holes in type signatures
- (:ghc-ticket:`14766`).
-
Runtime system
--------------
-- Fix a GC bug where a race condition in the parallel GC could cause it to
- garbage collect live sparks (:ghc-ticket:`22528`).
-
-- Truncate eventlog events with a large payload (:ghc-ticket:`20221`).
+- Fix a bug with the RTS linker being unable to resolve the ``setKeepCAFs``
+ symbol which started being used by the GHC library in 9.2.6, resulting in code
+ depending on this symbol failing to load in GHCi or via a compile time splice
+ when using a statically linked GHC, such as on Windows (:ghc-ticket:`22961`).
-- A bug in the nonmoving garbage collector regarding the treatment of
- zero-length ``SmallArray#``\ s has been fixed (:ghc-ticket:`22264`)
+- Fix a bug with the alignment of RTS data structures that could result in
+ segfaults when compiled with high optimisation settings on certain platforms
+ (:ghc-ticket:`22975` , :ghc-ticket:`22965`).
-- A number of bugs regarding the non-moving garbage collector's treatment of
- ``Weak#`` pointers have been fixed (:ghc-ticket:`22327`)
+- Fix a RTS bug resulting in segfaults while using cost center profiling on code
+ that uses the ``newArrayArray#`` primop (:ghc-ticket:`22129`).
-- A few race conditions between the non-moving collector and
- ``setNumCapabilities`` which could result in undefined behavior have been
- fixed (:ghc-ticket:`22926`, :ghc-ticket:`22927`)
-
-- The non-moving collector is now able to better schedule marking work during
- the post-mark synchronization phase of collection, significantly reducing
- pause times in some workloads (:ghc-ticket:`22929`).
-
-- Various bugs in the non-moving collector's implementation of the selector
- optimisation have been fixed (:ghc-ticket:`22930`)
+- Use C11 compatible static assertion syntax (:ghc-ticket:`22777`).
Build system and packaging
--------------------------
-- Bump ``gmp-tarballs`` to a version which doesn't use the reserved ``x18``
- register on AArch64/Darwin systems, and also has fixes for CVE-2021-43618
- (:ghc-ticket:`22497`, :ghc-ticket:`22789`).
-
-- Include haddock documentation in interface files for hadrian generated
- bindists, including darwin platforms (:ghc-ticket:`22734`).
-
-Core libraries
---------------
-
-- Bump ``bytestring`` to 0.11.4.0.
+- Include the ``gen_contents_index`` script which generates an index page
+ for GHC and library documentation in binary distributions generated by
+ Hadrian (:ghc-ticket:`22431`).
Included libraries
------------------
=====================================
hadrian/src/Oracles/Flag.hs
=====================================
@@ -72,7 +72,16 @@ targetSupportsSMP :: Action Bool
targetSupportsSMP = do
unreg <- flag GhcUnregisterised
armVer <- targetArmVersion
- goodArch <- anyTargetArch ["i386", "x86_64", "sparc", "powerpc", "arm", "aarch64", "s390x", "riscv64"]
+ goodArch <- anyTargetArch ["i386"
+ , "x86_64"
+ , "sparc"
+ , "powerpc"
+ , "powerpc64"
+ , "powerpc64le"
+ , "arm"
+ , "aarch64"
+ , "s390x"
+ , "riscv64"]
if -- The THREADED_RTS requires `BaseReg` to be in a register and the
-- Unregisterised mode doesn't allow that.
| unreg -> return False
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/454b2ff16b592bcc105587464d504b43059d77f2...a567c4d79fa12a79edb9c8efe10c031d6881a062
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/454b2ff16b592bcc105587464d504b43059d77f2...a567c4d79fa12a79edb9c8efe10c031d6881a062
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