Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC
Commits:
6156add5 by Ben Gamari at 2025-11-10T17:05:03+05:30
rts/nonmoving: Fix comment spelling
(cherry picked from commit 14281a22eb27498886def8e5d17797c9ce62f3ad)
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3ea29086 by Ben Gamari at 2025-11-10T17:05:03+05:30
rts/nonmoving: Use atomic operations to update bd->flags
(cherry picked from commit bedd38b01d6b113cb3bd10b5d784c16b32efb5bb)
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bcbebc7a by Ben Gamari at 2025-11-10T17:05:03+05:30
nonmoving: Use get_itbl instead of explicit loads
This is cleaner and also fixes unnecessary (and unsound) use of
`volatile`.
(cherry picked from commit 215d68414020dc4ed0636508c9eecd9f44f62168)
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355621cf by Ben Gamari at 2025-11-10T17:05:03+05:30
rts/Scav: Handle WHITEHOLEs in scavenge_one
`scavenge_one`, used to scavenge mutable list entries, may encounter
`WHITEHOLE`s when the non-moving GC is in use via two paths:
1. when an MVAR is being marked concurrently
2. when the object belongs to a chain of selectors being short-cutted.
Fixes #26204.
(cherry picked from commit 2c94aa3aa87c14b1ff5c4355c9a90efedd5d10f4)
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0f4851f7 by Ben Gamari at 2025-11-10T17:05:03+05:30
rts: Dynamically initialize built-in closures
To resolve #26166 we need to eliminate references to undefined symbols
in the runtime system. One such source of these is the runtime's
static references to `I#` and `C#` due the `stg_INTLIKE` and
`stg_CHARLIKE` arrays.
To avoid this we make these dynamic, initializing them during RTS
start-up.
(cherry picked from commit 39eaaaba5356e3fc9218d8e27375d6de24778cbc)
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ee451b3d by Rodrigo Mesquita at 2025-11-10T17:05:03+05:30
Move code-gen aux symbols from ghc-internal to rts
These symbols were all previously defined in ghc-internal and made the
dependency structure awkward, where the rts may refer to some of these
symbols and had to work around that circular dependency the way
described in #26166.
Moreover, the code generator will produce code that uses these symbols!
Therefore, they should be available in the rts:
PRINCIPLE: If the code generator may produce code which uses this
symbol, then it should be defined in the rts rather than, say,
ghc-internal.
That said, the main motivation is towards fixing #26166.
Towards #26166. Pre-requisite of !14892
(cherry picked from commit ba3e5bddb222008591edb6c3d433d93084170571)
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d677a630 by Ben Gamari at 2025-11-10T17:05:03+05:30
rts: Avoid static symbol references to ghc-internal
This resolves #26166, a bug due to new constraints placed by Apple's
linker on undefined references.
One source of such references in the RTS is the many symbols referenced
in ghc-internal. To mitigate #26166, we make these references dynamic,
as described in Note [RTS/ghc-internal interface].
Fixes #26166
Co-authored-by: Rodrigo Mesquita
Co-authored-by: Cheng Shao
(cherry picked from commit f31de2a9c2405d6645998460e4b501f9279606b3)
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d4e96a8b by Ben Gamari at 2025-11-10T17:05:03+05:30
compiler: Rename isMathFun -> isLibcFun
This set includes more than just math functions.
(cherry picked from commit 43fdfddc25c36ef4811941231d5755bad065796d)
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3f31ad73 by Ben Gamari at 2025-11-10T17:05:03+05:30
compiler: Add libc allocator functions to libc_funs
Prototypes for these are now visible from `Prim.h`, resulting in
multiple-declaration warnings in the unregisterised job.
(cherry picked from commit 4ed5138f7af532731f88380f98103487a9f15c5a)
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1e14ae85 by Ben Gamari at 2025-11-10T17:05:03+05:30
rts: Minimize header dependencies of Prim.h
Otherwise we will end up with redundant and incompatible declarations
resulting in warnings during the unregisterised build.
(cherry picked from commit 9a0a076b80d6fb68d7722d2bb72c17c90ba22cd1)
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61 changed files:
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/Linker/Dynamic.hs
- compiler/GHC/Linker/Static.hs
- hadrian/src/Settings/Packages.hs
- + libraries/ghc-internal/cbits/RtsIface.c
- libraries/ghc-internal/ghc-internal.cabal.in
- + libraries/ghc-internal/include/RtsIfaceSymbols.h
- libraries/ghc-prim/ghc-prim.cabal
- + rts/BuiltinClosures.c
- + rts/BuiltinClosures.h
- rts/CloneStack.h
- rts/Compact.cmm
- rts/ContinuationOps.cmm
- rts/Exception.cmm
- rts/Prelude.h
- rts/PrimOps.cmm
- rts/RtsAPI.c
- rts/RtsStartup.c
- rts/RtsSymbols.c
- + rts/RtsToHsIface.c
- rts/StgMiscClosures.cmm
- rts/StgStdThunks.cmm
- rts/configure.ac
- − rts/external-symbols.list.in
- rts/include/Rts.h
- rts/include/RtsAPI.h
- rts/include/Stg.h
- rts/include/rts/Constants.h
- + rts/include/rts/RtsToHsIface.h
- rts/include/rts/Types.h
- rts/include/rts/prof/CCS.h
- rts/include/rts/storage/Block.h
- rts/include/stg/MiscClosures.h
- rts/include/stg/Prim.h
- rts/posix/Signals.c
- libraries/ghc-prim/cbits/atomic.c → rts/prim/atomic.c
- libraries/ghc-prim/cbits/bitrev.c → rts/prim/bitrev.c
- libraries/ghc-prim/cbits/bswap.c → rts/prim/bswap.c
- libraries/ghc-prim/cbits/clz.c → rts/prim/clz.c
- libraries/ghc-prim/cbits/ctz.c → rts/prim/ctz.c
- + rts/prim/int64x2minmax.c
- libraries/ghc-prim/cbits/longlong.c → rts/prim/longlong.c
- libraries/ghc-prim/cbits/mulIntMayOflo.c → rts/prim/mulIntMayOflo.c
- libraries/ghc-prim/cbits/pdep.c → rts/prim/pdep.c
- libraries/ghc-prim/cbits/pext.c → rts/prim/pext.c
- libraries/ghc-prim/cbits/popcnt.c → rts/prim/popcnt.c
- + rts/prim/vectorQuotRem.c
- libraries/ghc-prim/cbits/word2float.c → rts/prim/word2float.c
- − rts/rts.buildinfo.in
- rts/rts.cabal
- rts/sm/NonMoving.c
- rts/sm/NonMovingMark.c
- rts/sm/Scav.c
- rts/wasm/JSFFI.c
- rts/wasm/scheduler.cmm
- rts/win32/libHSghc-internal.def
- utils/deriveConstants/Main.hs
- utils/jsffi/dyld.mjs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c74b1d4db85e87d77919fdb41480280...
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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c74b1d4db85e87d77919fdb41480280...
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