Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 28666fbf by Vladislav Zavialov at 2026-05-19T12:44:05-04:00 Add type families: Tuple, Constraints, Tuple#, Sum# (#27179) These type families map tuples of types to the corresponding Tuple<N>, Tuple<N>#, CTuple<N>, and Sum<N># types. Some examples at N=2: Tuple (Int, Bool) = Tuple2 Int Bool Constraints (Show a, Eq a) = CTuple2 (Show a) (Eq a) Tuple# (Int#, Float#) = Tuple2# Int# Float# Sum# (Int#, Float#) = Sum2# Int# Float# See GHC Proposal #145 "Non-punning list and tuple syntax". To make the Sum# instance at N=64 possible, this patch also introduces the Sum64# constructor declaration and bumps mAX_SUM_SIZE from 63 to 64. Metric Increase: ghc_experimental_dir - - - - - 41c2448b by Wen Kokke at 2026-05-19T12:44:53-04:00 rts: Add IPE event class for -l This commit adds a new IPE event class to the -l RTS flag. Previously, IPE events were enabled unconditionally. However, the IPE events can easily grow to hundreds or thousands of megabytes. With the new event class you can pass, e.g., -l-I to disable IPE events. - - - - - 62536551 by Wen Kokke at 2026-05-19T12:44:53-04:00 ghc-internal: Add TraceFlags.traceIPE - - - - - e45312d1 by Wen Kokke at 2026-05-19T12:44:53-04:00 testsuite: Add test for TraceFlags.traceIpe - - - - - 4768d9aa by Wen Kokke at 2026-05-19T12:44:53-04:00 ghc-internal: Add DebugFlags.ipe - - - - - bc1b5c69 by Wen Kokke at 2026-05-19T12:44:53-04:00 testsuite: Add test for DebugFlags.ipe - - - - - 0da1543f by Duncan Coutts at 2026-05-19T12:45:37-04:00 Document removal of the signal-based interval timer Update mentions within the RTS section of the users guide. Add a changelog entry. - - - - - b2911514 by Duncan Coutts at 2026-05-19T12:45:37-04:00 Fix section for an recent changelog entry - - - - - d6d76a7a by David Eichmann at 2026-05-19T12:46:19-04:00 ghc-toolchain: implement llvm program versioning logic - - - - - 248cb678 by Wolfgang Jeltsch at 2026-05-19T15:53:29-04:00 Turn `Trustworthy` into `Safe` in `base` where possible - - - - - 12c71479 by Wolfgang Jeltsch at 2026-05-19T15:53:30-04:00 Make the current `base` buildable with GHC 10.0 - - - - - 59 changed files: - changelog.d/dynamic-trace-flags - + changelog.d/ipe-event-class - + changelog.d/lib-add-tuple-tyfam-27179 - + changelog.d/no-more-timer-signal - compiler/GHC/Settings/Constants.hs - docs/users_guide/profiling.rst - docs/users_guide/runtime_control.rst - libraries/base/src/Control/Exception.hs - libraries/base/src/Control/Monad/IO/Class.hs - libraries/base/src/Data/Data.hs - libraries/base/src/Data/Fixed.hs - libraries/base/src/Data/List/NonEmpty.hs - libraries/base/src/Data/Version.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/ByteOrder.hs - libraries/base/src/GHC/Exts.hs - libraries/base/src/Numeric.hs - libraries/base/src/System/IO.hs - libraries/base/src/System/Timeout.hs - libraries/ghc-experimental/src/Data/Sum/Experimental.hs - libraries/ghc-experimental/src/Data/Tuple/Experimental.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/Types.hs - m4/ghc_toolchain.m4 - rts/IPE.c - rts/RtsFlags.c - rts/Trace.c - rts/Trace.h - rts/include/rts/EventLogWriter.h - rts/include/rts/Flags.h - testsuite/tests/ghci/scripts/ListTuplePunsPprNoAbbrevTuple.stdout - testsuite/tests/ghci/scripts/all.T - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/ghc-prim-exports.stdout - testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32 - testsuite/tests/parser/should_compile/ListTuplePunsSuccess1.hs - testsuite/tests/parser/should_compile/all.T - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.hs - + testsuite/tests/parser/should_fail/ListTuplePunsFail6.stderr - testsuite/tests/parser/should_fail/all.T - testsuite/tests/parser/should_run/ListTuplePunsConstraints.hs - testsuite/tests/profiling/should_run/callstack001.stdout - + testsuite/tests/rts/T25275/DebugIpe.hs - + testsuite/tests/rts/T25275/T25275_A.stdout - + testsuite/tests/rts/T25275/T25275_B.stdout - + testsuite/tests/rts/T25275/T25275_C.stdout - + testsuite/tests/rts/T25275/T25275_D.stdout - + testsuite/tests/rts/T25275/TraceIpe.hs - + testsuite/tests/rts/T25275/all.T - + testsuite/tests/typecheck/should_compile/T23135.hs - testsuite/tests/typecheck/should_compile/all.T - utils/ghc-toolchain/exe/Main.hs - utils/ghc-toolchain/src/GHC/Toolchain/Program.hs The diff was not included because it is too large. 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