Simon Peyton Jones pushed to branch wip/T26115 at Glasgow Haskell Compiler / GHC Commits: 6d12060f by meooow25 at 2025-06-12T14:26:07-04:00 Bump containers submodule to 0.8 Also * Disable -Wunused-imports for containers * Allow containers-0.8 for in-tree packages * Bump some submodules so that they allow containers-0.8. These are not at any particular versions. * Remove unused deps containers and split from ucd2haskell * Fix tests affected by the new containers and hpc-bin - - - - - 537bd233 by Peng Fan at 2025-06-12T14:27:02-04:00 NCG/LA64: Optimize code generation and reduce build-directory size. 1. makeFarBranches: Prioritize fewer instruction sequences. 2. Prefer instructions with immediate numbers to reduce register moves, e.g. andi,ori,xori,addi. 3. Ppr: Remove unnecessary judgments. 4. genJump: Avoid "ld+jr" as much as possible. 5. BCOND and BCOND1: Implement conditional jumps with two jump ranges, with limited choice of the shortest. 6. Implement FSQRT, CLT, CTZ. 7. Remove unnecessary code. - - - - - 19f20861 by Simon Peyton Jones at 2025-06-13T09:51:11-04:00 Improve redundant constraints for instance decls Addresses #25992, which showed that the default methods of an instance decl could make GHC fail to report redundant constraints. Figuring out how to do this led me to refactor the computation of redundant constraints. See the entirely rewritten Note [Tracking redundant constraints] in GHC.Tc.Solver.Solve - - - - - 1d02798e by Matthew Pickering at 2025-06-13T09:51:54-04:00 Refactor the treatment of nested Template Haskell splices * The difference between a normal splice, a quasiquoter and implicit splice caused by lifting is stored in the AST after renaming. * Information that the renamer learns about splices is stored in the relevant splice extension points (XUntypedSpliceExpr, XQuasiQuote). * Normal splices and quasi quotes record the flavour of splice (exp/pat/dec etc) * Implicit lifting stores information about why the lift was attempted, so if it fails, that can be reported to the user. * After renaming, the decision taken to attempt to implicitly lift a variable is stored in the `XXUntypedSplice` extension field in the `HsImplicitLiftSplice` constructor. * Since all the information is stored in the AST, in `HsUntypedSplice`, the type of `PendingRnSplice` now just stores a `HsUntypedSplice`. * Error messages since the original program can be easily printed, this is noticeable in the case of implicit lifting. * The user-written syntax is directly type-checked. Before, some desugaring took place in the * Fixes .hie files to work better with nested splices (nested splices are not indexed) * The location of the quoter in a quasiquote is now located, so error messages will precisely point to it (and again, it is indexed by hie files) In the future, the typechecked AST should also retain information about the splices and the specific desugaring being left to the desugarer. Also, `runRnSplice` should call `tcUntypedSplice`, otherwise the typechecking logic is duplicated (see the `QQError` and `QQTopError` tests for a difference caused by this). - - - - - f93798ba by Cheng Shao at 2025-06-13T09:52:35-04:00 libffi: update to 3.5.1 Bumps libffi submodule. - - - - - c4f8250e by Simon Peyton Jones at 2025-06-13T23:38:49+01:00 Renaming around predicate types .. we were (as it turned out) abstracting over type-class selectors in SPECIALISATION rules! Wibble isEqPred - - - - - 5eddea74 by Simon Peyton Jones at 2025-06-13T23:40:08+01:00 This increment adds tryTcS to support shortCutSolver * Make short-cut solver invoke the real solver, so that it works for type families. * Use the short-cut solver for quantified constraints too. * Use prepareSpecLHS for the old route too. Leave decomposeRuleLhs for RULES only. - - - - - ea39c9e9 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 wibbles - - - - - bd760673 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 Wibble imports - - - - - c59b8cf9 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 Refactor for Specialise.hs [skip ci] - - - - - 833fed2d by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 More - - - - - 6dc9a307 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 More wibbles - - - - - 37123721 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 Add debug call-stacks - - - - - bef83be0 by Simon Peyton Jones at 2025-06-13T23:40:25+01:00 More wibbles - - - - - a1c855b4 by Simon Peyton Jones at 2025-06-14T01:16:46+01:00 Wibble - - - - - 106 changed files: - compiler/GHC/Builtin/Names/TH.hs - compiler/GHC/CmmToAsm/LA64.hs - compiler/GHC/CmmToAsm/LA64/CodeGen.hs - compiler/GHC/CmmToAsm/LA64/Instr.hs - compiler/GHC/CmmToAsm/LA64/Ppr.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Predicate.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/Subst.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Core/Unfold/Make.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Expr.hs-boot - compiler/GHC/Hs/Instances.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Lexer.x - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/Splice.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Gen/App.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Gen/Splice.hs-boot - compiler/GHC/Tc/Solver.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/InertSet.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Rewrite.hs - compiler/GHC/Tc/Solver/Solve.hs - + compiler/GHC/Tc/Solver/Solve.hs-boot - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/Evidence.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/TH.hs - compiler/GHC/Tc/Utils/Concrete.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/ThLevelIndex.hs - compiler/GHC/Types/Var.hs - compiler/Language/Haskell/Syntax/Expr.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/ghc.cabal.in - ghc/ghc-bin.cabal.in - hadrian/hadrian.cabal - hadrian/src/Settings/Warnings.hs - libffi-tarballs - libraries/containers - libraries/ghc-boot/ghc-boot.cabal.in - libraries/ghc-heap/ghc-heap.cabal.in - libraries/ghc-internal/tools/ucd2haskell/ucd2haskell.cabal - libraries/ghci/ghci.cabal.in - libraries/haskeline - libraries/hpc - testsuite/tests/dependent/should_fail/T13135_simple.stderr - testsuite/tests/diagnostic-codes/codes.stdout - testsuite/tests/hpc/fork/hpc_fork.stdout - testsuite/tests/hpc/function/tough.stdout - testsuite/tests/hpc/function2/tough2.stdout - testsuite/tests/hpc/simple/hpc001.stdout - testsuite/tests/linear/should_fail/LinearTHFail.stderr - testsuite/tests/linters/notes.stdout - testsuite/tests/partial-sigs/should_fail/T10999.stderr - testsuite/tests/perf/compiler/hard_hole_fits.stderr - testsuite/tests/quasiquotation/T3953.stderr - + testsuite/tests/quotes/QQError.hs - + testsuite/tests/quotes/QQError.stderr - testsuite/tests/quotes/T10384.stderr - testsuite/tests/quotes/TH_localname.stderr - testsuite/tests/quotes/all.T - testsuite/tests/rebindable/DoRestrictedM.hs - + testsuite/tests/th/QQInQuote.hs - + testsuite/tests/th/QQTopError.hs - + testsuite/tests/th/QQTopError.stderr - testsuite/tests/th/T10598_TH.stderr - testsuite/tests/th/T14681.stderr - testsuite/tests/th/T17804.stderr - testsuite/tests/th/T5508.stderr - testsuite/tests/th/TH_Lift.stderr - testsuite/tests/th/all.T - testsuite/tests/th/overloaded/TH_overloaded_constraints_fail.stderr - + testsuite/tests/typecheck/should_compile/T25992.hs - + testsuite/tests/typecheck/should_compile/T25992.stderr - testsuite/tests/typecheck/should_compile/all.T - testsuite/tests/typecheck/should_fail/tcfail097.stderr - utils/check-exact/ExactPrint.hs - utils/haddock/haddock-library/haddock-library.cabal - utils/hpc - utils/hsc2hs - utils/iserv/iserv.cabal.in The diff was not included because it is too large. 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