February 2026 - ghc-commits

[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] Adjust jobs.yaml
by Sven Tennie (＠supersven) 08 Feb '26

08 Feb '26

Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC Commits: 77ec95ae by Sven Tennie at 2026-02-08T14:56:03+01:00 Adjust jobs.yaml - - - - - 1 changed file: - .gitlab/jobs.yaml Changes: ===================================== .gitlab/jobs.yaml ===================================== @@ -6795,7 +6795,7 @@ ], "variables": { "BIGNUM_BACKEND": "gmp", - "BIN_DIST_NAME": "ghc-x86_64-linux-deb12-riscv-cross_riscv64-linux-gnu-stage_3-validate", + "BIN_DIST_NAME": "stage3-ghc-x86_64-linux-deb12-riscv-cross_riscv64-linux-gnu-validate", "BUILD_FLAVOUR": "validate", "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check", "CROSS_EMULATOR": "qemu-riscv64 -L /usr/riscv64-linux-gnu", View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/77ec95ae9e7e73313b4717ed2f0c44b… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/77ec95ae9e7e73313b4717ed2f0c44b… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/supersven/hadrian-cross-stage3] 3 commits: Hack
by Sven Tennie (＠supersven) 08 Feb '26

08 Feb '26

Sven Tennie pushed to branch wip/supersven/hadrian-cross-stage3 at Glasgow Haskell Compiler / GHC Commits: 7456b7c7 by Sven Tennie at 2026-02-07T08:10:14+01:00 Hack - - - - - 37a1598a by Sven Tennie at 2026-02-07T08:23:33+01:00 WIP: Validate script - - - - - 2fdd2d9a by Sven Tennie at 2026-02-07T12:18:43+01:00 Fix stage3 bindist creation - - - - - 3 changed files: - hadrian/src/Rules/BinaryDist.hs - hadrian/src/Rules/Generate.hs - + validate-riscv-bindist.sh Changes: ===================================== hadrian/src/Rules/BinaryDist.hs ===================================== @@ -122,8 +122,8 @@ installTo relocatable prefix = do runBuilderWithCmdOptions env (Make bindistFilesDir) ["install"] [] [] -buildBinDistDir :: FilePath -> BindistConfig -> Action () -buildBinDistDir root conf@BindistConfig{..} = do +buildBinDistDir :: FilePath -> FilePath -> BindistConfig -> Action () +buildBinDistDir dirPrefix root conf@BindistConfig{..} = do verbosity <- getVerbosity -- We 'need' all binaries and libraries @@ -153,7 +153,7 @@ buildBinDistDir root conf@BindistConfig{..} = do distDir <- Context.distDir (vanillaContext library_stage rts) let ghcBuildDir = root -/- stageString library_stage - bindistFilesDir = root -/- "bindist" -/- ghcVersionPretty + bindistFilesDir = root -/- "bindist" -/- dirPrefix <> ghcVersionPretty ghcVersionPretty = "ghc-" ++ version ++ "-" ++ targetPlatform rtsIncludeDir = distDir -/- "include" @@ -223,8 +223,7 @@ buildBinDistDir root conf@BindistConfig{..} = do -- N.B. the ghc-pkg executable may be prefixed with a target triple -- (c.f. #20267). - -- Not going to work for cross - ghcPkgName <- programName (vanillaContext Stage1 ghcPkg) + ghcPkgName <- programName (vanillaContext executable_stage ghcPkg) cmd_ (bindistFilesDir -/- "bin" -/- ghcPkgName) ["recache", "--package-db", bindistFilesDir -/- "lib" -/- "package.conf.d" ] @@ -316,27 +315,27 @@ bindistRules = do phony "binary-dist-dir" $ do cfg <- implicitBindistConfig - buildBinDistDir root cfg + buildBinDistDir "" root cfg - phony "binary-dist-dir-cross" $ buildBinDistDir root crossBindist + phony "binary-dist-dir-cross" $ buildBinDistDir "" root crossBindist - phony "binary-dist-dir-stage3" $ buildBinDistDir root targetBindist + phony "binary-dist-dir-stage3" $ buildBinDistDir "stage3-" root targetBindist let buildBinDist compressor = do win_host <- isWinHost win_target <- isWinTarget Stage2 when (win_target && win_host) (error "normal binary-dist does not work for windows targets, use `reloc-binary-dist-*` target instead.") - buildBinDistX "binary-dist-dir" "bindist" compressor - buildBinDistReloc = buildBinDistX "reloc-binary-dist-dir" "reloc-bindist" + buildBinDistX "binary-dist-dir" "bindist" "" compressor + buildBinDistReloc = buildBinDistX "reloc-binary-dist-dir" "reloc-bindist" "" - buildBinDistX :: String -> FilePath -> Compressor -> Action () - buildBinDistX target bindist_folder compressor = do + buildBinDistX :: String -> FilePath -> FilePath -> Compressor -> Action () + buildBinDistX target bindist_folder dirPrefix compressor = do need [target] version <- setting ProjectVersion targetPlatform <- setting TargetPlatformFull - let ghcVersionPretty = "ghc-" ++ version ++ "-" ++ targetPlatform + let ghcVersionPretty = dirPrefix <> "ghc-" ++ version ++ "-" ++ targetPlatform -- Finally, we create the archive <root>/bindist/ghc-X.Y.Z-platform.tar.xz tarPath <- builderPath (Tar Create) @@ -352,12 +351,12 @@ bindistRules = do phony (name <> "-dist-xz") $ mk_bindist Xz -- TODO: Generate these targets as well - phony ("binary-dist-cross") $ buildBinDistX "binary-dist-dir-cross" "bindist" Xz - phony ("binary-dist-stage3") $ buildBinDistX "binary-dist-dir-stage3" "bindist" Xz + phony "binary-dist-cross" $ buildBinDistX "binary-dist-dir-cross" "bindist" "" Xz + phony "binary-dist-stage3" $ buildBinDistX "binary-dist-dir-stage3" "bindist" "stage3-" Xz -- Prepare binary distribution configure script -- (generated under <ghc root>/distrib/configure by 'autoreconf') - root -/- "bindist" -/- "ghc-*" -/- "configure" %> \configurePath -> do + root -/- "bindist" -/- "*ghc-*" -/- "configure" %> \configurePath -> do need ["distrib" -/- "configure.ac"] ghcRoot <- topDirectory copyFile (ghcRoot -/- "aclocal.m4") (ghcRoot -/- "distrib" -/- "aclocal.m4") @@ -372,7 +371,7 @@ bindistRules = do moveFile (ghcRoot -/- "distrib" -/- "configure") configurePath -- Generate the Makefile that enables the "make install" part - root -/- "bindist" -/- "ghc-*" -/- "Makefile" %> \makefilePath -> do + root -/- "bindist" -/- "*ghc-*" -/- "Makefile" %> \makefilePath -> do top <- topDirectory copyFile (top -/- "hadrian" -/- "bindist" -/- "Makefile") makefilePath @@ -381,7 +380,7 @@ bindistRules = do -- (see the list of files needed in the 'binary-dist' rule above, before -- creating the archive). forM_ bindistInstallFiles $ \file -> - root -/- "bindist" -/- "ghc-*" -/- file %> \dest -> do + root -/- "bindist" -/- "*ghc-*" -/- file %> \dest -> do copyFile (fixup file) dest where @@ -466,7 +465,7 @@ pkgToWrappers stage pkg = do -- These are the packages which we want to expose to the user and hence -- there are wrappers installed in the bindist. | pkg `elem` [hpcBin, haddock, hp2ps, hsc2hs, ghc, ghcPkg] - -> (:[]) <$> (programName =<< programContext Stage1 pkg) + -> (:[]) <$> (programName =<< programContext stage pkg) | otherwise -> pure [] wrapper :: Stage -> FilePath -> Action String ===================================== hadrian/src/Rules/Generate.hs ===================================== @@ -417,9 +417,15 @@ bindistRules = do templateRule ("distrib" -/- "configure.ac") $ mconcat [ interpolateSetting "ConfiguredEmsdkVersion" EmsdkVersion , interpolateVar "CrossCompilePrefix" $ do - crossCompiling <- interp $ getFlag CrossCompiling - tpf <- setting TargetPlatformFull - pure $ if crossCompiling then tpf <> "-" else "" + -- For a bindist, the prefix is needed only if the distributed compiler + -- is a cross-compiler (i.e., host != target in the bindist). + -- For Stage3 bindist (isStage3Cross=True), both host and target are the + -- target platform, so no prefix. For cross-compiler bindist (Stage1), + -- host != target, so we add the prefix. + -- Note: This template is shared by all bindist types, evaluated in Stage2 context. + host <- ifM isStage3Cross (setting TargetPlatformFull) (setting HostPlatformFull) + target <- setting TargetPlatformFull + pure $ if host /= target then target <> "-" else "" , interpolateVar "LeadingUnderscore" $ yesNo <$> getTarget tgtSymbolsHaveLeadingUnderscore , interpolateSetting "LlvmMaxVersion" LlvmMaxVersion , interpolateSetting "LlvmMinVersion" LlvmMinVersion @@ -429,8 +435,8 @@ bindistRules = do , interpolateVar "TablesNextToCode" $ yesNo <$> getTarget tgtTablesNextToCode , interpolateVar "TargetHasLibm" $ yesNo <$> interp (staged (buildFlag TargetHasLibm)) , interpolateVar "TargetPlatform" $ getTarget targetPlatformTriple - , interpolateVar "BuildPlatform" $ interp $ queryBuild targetPlatformTriple - , interpolateVar "HostPlatform" $ interp $ queryHost targetPlatformTriple + , interpolateVar "BuildPlatform" $ ifM isStage3Cross (getTarget targetPlatformTriple) (interp $ queryBuild targetPlatformTriple) + , interpolateVar "HostPlatform" $ ifM isStage3Cross (getTarget targetPlatformTriple) (interp $ queryHost targetPlatformTriple) , interpolateVar "TargetWordBigEndian" $ getTarget isBigEndian , interpolateVar "TargetWordSize" $ getTarget wordSize , interpolateVar "Unregisterised" $ yesNo <$> getTarget tgtUnregisterised @@ -439,13 +445,19 @@ bindistRules = do , interpolateVar "BaseUnitId" $ pkgUnitId Stage1 base , interpolateVar "GhcWithSMP" $ yesNo <$> targetSupportsSMP Stage2 , interpolateVar "TargetPlatformFull" (setting TargetPlatformFull) - , interpolateVar "BuildPlatformFull" (setting BuildPlatformFull) - , interpolateVar "HostPlatformFull" (setting HostPlatformFull) + , interpolateVar "BuildPlatformFull" $ ifM isStage3Cross (setting TargetPlatformFull) (setting BuildPlatformFull) + , interpolateVar "HostPlatformFull" $ ifM isStage3Cross (setting TargetPlatformFull) (setting HostPlatformFull) ] where interp = interpretInContext (semiEmptyTarget Stage2) getTarget = interp . queryTarget Stage2 + -- TODO: This is a hack. It should be covered by config files + isStage3Cross = do + crossCompiling <- interp $ getFlag CrossCompiling + stage <- interp getStage + pure $ if crossCompiling && stage >= Stage2 then True else False + -- | Given a 'String' replace characters '.' and '-' by underscores ('_') so that -- the resulting 'String' is a valid C preprocessor identifier. cppify :: String -> String ===================================== validate-riscv-bindist.sh ===================================== @@ -0,0 +1,184 @@ +#!/usr/bin/env bash +# Script to validate that only RISC-V binaries, libraries, and target strings +# are present in _build/bindist/stage3-* directories + +set -e + +RED='\033[0;31m' +GREEN='\033[0;32m' +YELLOW='\033[1;33m' +NC='\033[0m' # No Color + +ERRORS=0 +WARNINGS=0 + +echo "=== RISC-V Bindist Validation Script ===" +echo "" + +# Find all stage3-* directories +STAGE3_DIRS=$(find _build/bindist -maxdepth 1 -name "stage3-*" -type d 2>/dev/null || true) + +if [ -z "$STAGE3_DIRS" ]; then + echo -e "${YELLOW}Warning: No stage3-* directories found in _build/bindist/${NC}" + exit 1 +fi + +echo "Found stage3 directories:" +echo "$STAGE3_DIRS" +echo "" + +# Function to check if a file is a RISC-V binary/library +check_binary_arch() { + local file="$1" + + # Skip non-binary files + if ! file "$file" | grep -qE "ELF|archive"; then + return 0 + fi + + # Check architecture + local arch_info=$(file "$file") + + if echo "$arch_info" | grep -qE "RISC-V|riscv"; then + return 0 + else + echo -e "${RED}ERROR: Non-RISC-V binary/library found:${NC}" + echo " File: $file" + echo " Arch: $arch_info" + echo "" + return 1 + fi +} + +# Function to check target strings in text files +check_target_strings() { + local file="$1" + + # Skip if file is not readable or is a directory + if [ ! -f "$file" ] || [ ! -r "$file" ]; then + return 0 + fi + + # Skip binary files (ELF binaries and archives) + if file "$file" | grep -qE "ELF|archive"; then + return 0 + fi + + # Look for common non-RISC-V target patterns (case insensitive) + # Common architectures to check for: x86_64, aarch64, arm, i386, i686, powerpc, etc. + # Also check for build/host alias variables + local bad_patterns=( + "build_alias=.*x86_64" + "build_alias=.*aarch64" + "build_alias=.*i386" + "build_alias=.*i686" + "host_alias=.*x86_64" + "host_alias=.*aarch64" + "host_alias=.*i386" + "host_alias=.*i686" + "bootstrap_build=.*x86_64" + "bootstrap_build=.*aarch64" + "bootstrap_build=.*i386" + "bootstrap_build=.*i686" + "bootstrap_host=.*x86_64" + "bootstrap_host=.*aarch64" + "bootstrap_host=.*i386" + "bootstrap_host=.*i686" + ) + + local found_bad=0 + for pattern in "${bad_patterns[@]}"; do + if grep -qiE "$pattern" "$file" 2>/dev/null; then + if [ $found_bad -eq 0 ]; then + echo -e "${RED}ERROR: Non-RISC-V target string found in:${NC}" + echo " File: $file" + found_bad=1 + fi + echo " Pattern: $pattern" + # Show context (up to 3 lines) + grep -niE "$pattern" "$file" | head -3 | sed 's/^/ /' + fi + done + + if [ $found_bad -eq 1 ]; then + echo "" + return 1 + fi + + return 0 +} + +# Function to check for RISC-V references (informational) +check_riscv_presence() { + local file="$1" + + # Skip binary files for this check + if file "$file" | grep -qE "ELF|archive|executable"; then + return 0 + fi + + if [ ! -f "$file" ] || [ ! -r "$file" ]; then + return 0 + fi + + # Check if it's a text file + if ! file "$file" | grep -qE "text|ASCII|UTF-8|script"; then + return 0 + fi + + # Look for RISC-V patterns + if grep -qiE "riscv|risc-v" "$file" 2>/dev/null; then + return 0 + fi + + return 1 +} + +echo "=== Checking binaries and libraries for architecture ===" +echo "" + +for dir in $STAGE3_DIRS; do + echo "Scanning: $dir" + + # Find all ELF binaries and archives + while IFS= read -r -d '' file; do + if ! check_binary_arch "$file"; then + ((ERRORS++)) + fi + done < <(find "$dir" -type f -executable -print0 2>/dev/null) + + # Also check .a and .so files + while IFS= read -r -d '' file; do + if ! check_binary_arch "$file"; then + ((ERRORS++)) + fi + done < <(find "$dir" -type f $ -name "*.a" -o -name "*.so" -o -name "*.so.*" $ -print0 2>/dev/null) +done + +echo "" +echo "=== Checking text files for non-RISC-V target strings ===" +echo "" + +for dir in $STAGE3_DIRS; do + echo "Scanning: $dir" + + # Check common configuration and script files + while IFS= read -r -d '' file; do + if ! check_target_strings "$file"; then + ((ERRORS++)) + fi + done < <(find "$dir" -type f $ -name "*.conf" -o -name "*.config" -o -name "*.sh" -o -name "*.txt" -o -name "*.cabal" -o -name "*.mk" -o -name "Makefile" -o -name "configure" $ -print0 2>/dev/null) +done + +echo "" +echo "=== Summary ===" +echo "" + +if [ $ERRORS -eq 0 ]; then + echo -e "${GREEN}✓ All checks passed! Only RISC-V binaries/libraries and target strings found.${NC}" + exit 0 +else + echo -e "${RED}✗ Found $ERRORS error(s)${NC}" + echo -e "${RED}Non-RISC-V content detected in stage3 bindist directories!${NC}" + exit 1 +fi View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/251862dcf6e7ad8ace5a7626bd0d3c… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/251862dcf6e7ad8ace5a7626bd0d3c… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] CI: Don't collapse test results.
by Marge Bot (＠marge-bot) 07 Feb '26

07 Feb '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 5339f6f0 by Andreas Klebinger at 2026-02-07T10:48:40-05:00 CI: Don't collapse test results. This puts test output back into the primary test log instead of a subsection removing the need to expand a section to see test results. While the intention was good in practice the old behaviour mostly wastes time by requiring expansion of the section. Fixes #26882 - - - - - 1 changed file: - .gitlab/ci.sh Changes: ===================================== .gitlab/ci.sh ===================================== @@ -655,7 +655,6 @@ function install_bindist() { } function test_hadrian() { - start_section test-hadrian "Test via Hadrian" check_msys2_deps _build/stage1/bin/ghc --version check_release_build @@ -777,7 +776,6 @@ function test_hadrian() { info "STAGE2_TEST=$?" fi - end_section test-hadrian } function summarise_hi_files() { View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/5339f6f062f40b2509f75573880e875… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/5339f6f062f40b2509f75573880e875… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] Add cabal.project file to generate-ci
by Marge Bot (＠marge-bot) 07 Feb '26

07 Feb '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: d112b440 by Sven Tennie at 2026-02-07T10:47:56-05:00 Add cabal.project file to generate-ci This fixes the HLS setup for our CI code generation script (generate-ci). The project file simply makes `generate-ci` of the cabal file discoverable. - - - - - 1 changed file: - + .gitlab/generate-ci/cabal.project Changes: ===================================== .gitlab/generate-ci/cabal.project ===================================== @@ -0,0 +1 @@ +packages: . View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d112b4407af651841367e5d326d98e6… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d112b4407af651841367e5d326d98e6… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 4 commits: NCG/LA64: adjust register usage to avoid src-register being clobbered
by Marge Bot (＠marge-bot) 07 Feb '26

07 Feb '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 2e39a340 by Peng Fan at 2026-02-07T03:42:01-05:00 NCG/LA64: adjust register usage to avoid src-register being clobbered - - - - - 9faf1b35 by Teo Camarasu at 2026-02-07T03:42:43-05:00 ghc-internal: Delete unnecessary GHC.Internal.Data.Ix This module merely re-exports GHC.Internal.Ix. It was copied from `base` when `ghc-internal` was split, but there is no reason to have this now. So, let's delete it. Resolves #26848 - - - - - badaf1da by Sven Tennie at 2026-02-07T06:17:36-05:00 Add cabal.project file to generate-ci This fixes the HLS setup for our CI code generation script (generate-ci). The project file simply makes `generate-ci` of the cabal file discoverable. - - - - - fc696817 by Andreas Klebinger at 2026-02-07T06:17:37-05:00 CI: Don't collapse test results. This puts test output back into the primary test log instead of a subsection removing the need to expand a section to see test results. While the intention was good in practice the old behaviour mostly wastes time by requiring expansion of the section. Fixes #26882 - - - - - 10 changed files: - .gitlab/ci.sh - + .gitlab/generate-ci/cabal.project - compiler/GHC/CmmToAsm/LA64/CodeGen.hs - libraries/base/src/Data/Ix.hs - libraries/ghc-internal/ghc-internal.cabal.in - − libraries/ghc-internal/src/GHC/Internal/Data/Ix.hs - 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/base-exports.stdout-ws-32 Changes: ===================================== .gitlab/ci.sh ===================================== @@ -655,7 +655,6 @@ function install_bindist() { } function test_hadrian() { - start_section test-hadrian "Test via Hadrian" check_msys2_deps _build/stage1/bin/ghc --version check_release_build @@ -777,7 +776,6 @@ function test_hadrian() { info "STAGE2_TEST=$?" fi - end_section test-hadrian } function summarise_hi_files() { ===================================== .gitlab/generate-ci/cabal.project ===================================== @@ -0,0 +1 @@ +packages: . ===================================== compiler/GHC/CmmToAsm/LA64/CodeGen.hs ===================================== @@ -1784,16 +1784,18 @@ genClz :: Width -> LocalReg -> CmmExpr -> NatM InstrBlock genClz w dst src = do platform <- getPlatform (reg_x, _, code_x) <- getSomeReg src + tmp <- getNewRegNat II64 let dst_reg = getRegisterReg platform (CmmLocal dst) if w `elem` [W32, W64] then do return (code_x `snocOL` CLZ (OpReg w dst_reg) (OpReg w reg_x)) else if w `elem` [W8, W16] then do + -- Process uniformly according to one data length, W32. return (code_x `appOL` toOL [ - MOV (OpReg W64 dst_reg) (OpImm (ImmInt 1)), - SLL (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpImm (ImmInt (31-shift))), - SLL (OpReg W64 reg_x) (OpReg W64 reg_x) (OpImm (ImmInt (32-shift))), - OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 reg_x), + MOV (OpReg W64 tmp) (OpImm (ImmInt 1)), + SLL (OpReg W64 tmp) (OpReg W64 tmp) (OpImm (ImmInt (31-shift))), + SLL (OpReg W64 dst_reg) (OpReg W32 reg_x) (OpImm (ImmInt (32-shift))), + OR (OpReg W64 dst_reg) (OpReg W64 tmp) (OpReg W64 dst_reg), CLZ (OpReg W64 dst_reg) (OpReg W32 dst_reg) ] ) @@ -1806,16 +1808,17 @@ genCtz :: Width -> LocalReg -> CmmExpr -> NatM InstrBlock genCtz w dst src = do platform <- getPlatform (reg_x, _, code_x) <- getSomeReg src + tmp <- getNewRegNat II64 let dst_reg = getRegisterReg platform (CmmLocal dst) if w `elem` [W32, W64] then do return (code_x `snocOL` CTZ (OpReg w dst_reg) (OpReg w reg_x)) else if w `elem` [W8, W16] then do return (code_x `appOL` toOL [ - MOV (OpReg W64 dst_reg) (OpImm (ImmInt 1)), - SLL (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpImm (ImmInt shift)), - BSTRPICK II64 (OpReg W64 reg_x) (OpReg W64 reg_x) (OpImm (ImmInt (shift-1))) (OpImm (ImmInt 0)), - OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 reg_x), + MOV (OpReg W64 tmp) (OpImm (ImmInt 1)), + SLL (OpReg W64 tmp) (OpReg W64 tmp) (OpImm (ImmInt shift)), + BSTRPICK II64 (OpReg W64 dst_reg) (OpReg W64 reg_x) (OpImm (ImmInt (shift-1))) (OpImm (ImmInt 0)), + OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 tmp), CTZ (OpReg W64 dst_reg) (OpReg W64 dst_reg) ] ) ===================================== libraries/base/src/Data/Ix.hs ===================================== @@ -1,4 +1,4 @@ -{-# LANGUAGE Safe #-} +{-# LANGUAGE Trustworthy #-} -- | -- @@ -42,4 +42,4 @@ module Data.Ix -- <https://www.haskell.org/onlinereport/haskell2010/haskellch19.html>. ) where -import GHC.Internal.Data.Ix +import GHC.Internal.Ix ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -153,7 +153,6 @@ Library GHC.Internal.Data.Functor.Identity GHC.Internal.Data.Functor.Utils GHC.Internal.Data.IORef - GHC.Internal.Data.Ix GHC.Internal.Data.List GHC.Internal.Data.List.NonEmpty GHC.Internal.Data.Maybe ===================================== libraries/ghc-internal/src/GHC/Internal/Data/Ix.hs deleted ===================================== @@ -1,64 +0,0 @@ -{-# LANGUAGE Trustworthy #-} - ------------------------------------------------------------------------------ --- | --- Module : GHC.Internal.Data.Ix --- Copyright : (c) The University of Glasgow 2001 --- License : BSD-style (see the file libraries/base/LICENSE) --- --- Maintainer : libraries(a)haskell.org --- Stability : stable --- Portability : portable --- --- The 'Ix' class is used to map a contiguous subrange of values in --- type onto integers. It is used primarily for array indexing --- (see the array package). 'Ix' uses row-major order. --- ------------------------------------------------------------------------------ - -module GHC.Internal.Data.Ix - ( - -- * The 'Ix' class - Ix - ( range - , index - , inRange - , rangeSize - ) - -- Ix instances: - -- - -- Ix Char - -- Ix Int - -- Ix Integer - -- Ix Bool - -- Ix Ordering - -- Ix () - -- (Ix a, Ix b) => Ix (a, b) - -- ... - - -- * Deriving Instances of 'Ix' - -- | Derived instance declarations for the class 'Ix' are only possible - -- for enumerations (i.e. datatypes having only nullary constructors) - -- and single-constructor datatypes, including arbitrarily large tuples, - -- whose constituent types are instances of 'Ix'. - -- - -- * For an enumeration, the nullary constructors are assumed to be - -- numbered left-to-right with the indices being 0 to n-1 inclusive. This - -- is the same numbering defined by the 'Enum' class. For example, given - -- the datatype: - -- - -- > data Colour = Red | Orange | Yellow | Green | Blue | Indigo | Violet - -- - -- we would have: - -- - -- > range (Yellow,Blue) == [Yellow,Green,Blue] - -- > index (Yellow,Blue) Green == 1 - -- > inRange (Yellow,Blue) Red == False - -- - -- * For single-constructor datatypes, the derived instance declarations - -- are as shown for tuples in chapter 19, section 2 of the Haskell 2010 report: - -- <https://www.haskell.org/onlinereport/haskell2010/haskellch19.html>. - - ) where - -import GHC.Internal.Ix ===================================== testsuite/tests/interface-stability/base-exports.stdout ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/fcf250997fce8696ccefe2cc8a671b… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/fcf250997fce8696ccefe2cc8a671b… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] ghc-internal: Delete unnecessary GHC.Internal.Data.Ix
by Marge Bot (＠marge-bot) 07 Feb '26

07 Feb '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 9faf1b35 by Teo Camarasu at 2026-02-07T03:42:43-05:00 ghc-internal: Delete unnecessary GHC.Internal.Data.Ix This module merely re-exports GHC.Internal.Ix. It was copied from `base` when `ghc-internal` was split, but there is no reason to have this now. So, let's delete it. Resolves #26848 - - - - - 7 changed files: - libraries/base/src/Data/Ix.hs - libraries/ghc-internal/ghc-internal.cabal.in - − libraries/ghc-internal/src/GHC/Internal/Data/Ix.hs - 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/base-exports.stdout-ws-32 Changes: ===================================== libraries/base/src/Data/Ix.hs ===================================== @@ -1,4 +1,4 @@ -{-# LANGUAGE Safe #-} +{-# LANGUAGE Trustworthy #-} -- | -- @@ -42,4 +42,4 @@ module Data.Ix -- <https://www.haskell.org/onlinereport/haskell2010/haskellch19.html>. ) where -import GHC.Internal.Data.Ix +import GHC.Internal.Ix ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -153,7 +153,6 @@ Library GHC.Internal.Data.Functor.Identity GHC.Internal.Data.Functor.Utils GHC.Internal.Data.IORef - GHC.Internal.Data.Ix GHC.Internal.Data.List GHC.Internal.Data.List.NonEmpty GHC.Internal.Data.Maybe ===================================== libraries/ghc-internal/src/GHC/Internal/Data/Ix.hs deleted ===================================== @@ -1,64 +0,0 @@ -{-# LANGUAGE Trustworthy #-} - ------------------------------------------------------------------------------ --- | --- Module : GHC.Internal.Data.Ix --- Copyright : (c) The University of Glasgow 2001 --- License : BSD-style (see the file libraries/base/LICENSE) --- --- Maintainer : libraries(a)haskell.org --- Stability : stable --- Portability : portable --- --- The 'Ix' class is used to map a contiguous subrange of values in --- type onto integers. It is used primarily for array indexing --- (see the array package). 'Ix' uses row-major order. --- ------------------------------------------------------------------------------ - -module GHC.Internal.Data.Ix - ( - -- * The 'Ix' class - Ix - ( range - , index - , inRange - , rangeSize - ) - -- Ix instances: - -- - -- Ix Char - -- Ix Int - -- Ix Integer - -- Ix Bool - -- Ix Ordering - -- Ix () - -- (Ix a, Ix b) => Ix (a, b) - -- ... - - -- * Deriving Instances of 'Ix' - -- | Derived instance declarations for the class 'Ix' are only possible - -- for enumerations (i.e. datatypes having only nullary constructors) - -- and single-constructor datatypes, including arbitrarily large tuples, - -- whose constituent types are instances of 'Ix'. - -- - -- * For an enumeration, the nullary constructors are assumed to be - -- numbered left-to-right with the indices being 0 to n-1 inclusive. This - -- is the same numbering defined by the 'Enum' class. For example, given - -- the datatype: - -- - -- > data Colour = Red | Orange | Yellow | Green | Blue | Indigo | Violet - -- - -- we would have: - -- - -- > range (Yellow,Blue) == [Yellow,Green,Blue] - -- > index (Yellow,Blue) Green == 1 - -- > inRange (Yellow,Blue) Red == False - -- - -- * For single-constructor datatypes, the derived instance declarations - -- are as shown for tuples in chapter 19, section 2 of the Haskell 2010 report: - -- <https://www.haskell.org/onlinereport/haskell2010/haskellch19.html>. - - ) where - -import GHC.Internal.Ix ===================================== testsuite/tests/interface-stability/base-exports.stdout ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -1286,7 +1286,7 @@ module Data.Int where data Int8 = ... module Data.Ix where - -- Safety: Safe + -- Safety: Trustworthy type Ix :: * -> Constraint class GHC.Internal.Classes.Ord a => Ix a where range :: (a, a) -> [a] View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9faf1b3575652a5e379cc2f2c0a1266… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9faf1b3575652a5e379cc2f2c0a1266… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] NCG/LA64: adjust register usage to avoid src-register being clobbered
by Marge Bot (＠marge-bot) 07 Feb '26

07 Feb '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 2e39a340 by Peng Fan at 2026-02-07T03:42:01-05:00 NCG/LA64: adjust register usage to avoid src-register being clobbered - - - - - 1 changed file: - compiler/GHC/CmmToAsm/LA64/CodeGen.hs Changes: ===================================== compiler/GHC/CmmToAsm/LA64/CodeGen.hs ===================================== @@ -1784,16 +1784,18 @@ genClz :: Width -> LocalReg -> CmmExpr -> NatM InstrBlock genClz w dst src = do platform <- getPlatform (reg_x, _, code_x) <- getSomeReg src + tmp <- getNewRegNat II64 let dst_reg = getRegisterReg platform (CmmLocal dst) if w `elem` [W32, W64] then do return (code_x `snocOL` CLZ (OpReg w dst_reg) (OpReg w reg_x)) else if w `elem` [W8, W16] then do + -- Process uniformly according to one data length, W32. return (code_x `appOL` toOL [ - MOV (OpReg W64 dst_reg) (OpImm (ImmInt 1)), - SLL (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpImm (ImmInt (31-shift))), - SLL (OpReg W64 reg_x) (OpReg W64 reg_x) (OpImm (ImmInt (32-shift))), - OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 reg_x), + MOV (OpReg W64 tmp) (OpImm (ImmInt 1)), + SLL (OpReg W64 tmp) (OpReg W64 tmp) (OpImm (ImmInt (31-shift))), + SLL (OpReg W64 dst_reg) (OpReg W32 reg_x) (OpImm (ImmInt (32-shift))), + OR (OpReg W64 dst_reg) (OpReg W64 tmp) (OpReg W64 dst_reg), CLZ (OpReg W64 dst_reg) (OpReg W32 dst_reg) ] ) @@ -1806,16 +1808,17 @@ genCtz :: Width -> LocalReg -> CmmExpr -> NatM InstrBlock genCtz w dst src = do platform <- getPlatform (reg_x, _, code_x) <- getSomeReg src + tmp <- getNewRegNat II64 let dst_reg = getRegisterReg platform (CmmLocal dst) if w `elem` [W32, W64] then do return (code_x `snocOL` CTZ (OpReg w dst_reg) (OpReg w reg_x)) else if w `elem` [W8, W16] then do return (code_x `appOL` toOL [ - MOV (OpReg W64 dst_reg) (OpImm (ImmInt 1)), - SLL (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpImm (ImmInt shift)), - BSTRPICK II64 (OpReg W64 reg_x) (OpReg W64 reg_x) (OpImm (ImmInt (shift-1))) (OpImm (ImmInt 0)), - OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 reg_x), + MOV (OpReg W64 tmp) (OpImm (ImmInt 1)), + SLL (OpReg W64 tmp) (OpReg W64 tmp) (OpImm (ImmInt shift)), + BSTRPICK II64 (OpReg W64 dst_reg) (OpReg W64 reg_x) (OpImm (ImmInt (shift-1))) (OpImm (ImmInt 0)), + OR (OpReg W64 dst_reg) (OpReg W64 dst_reg) (OpReg W64 tmp), CTZ (OpReg W64 dst_reg) (OpReg W64 dst_reg) ] ) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2e39a340868cb23508ad63471e1c4cc… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2e39a340868cb23508ad63471e1c4cc… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/supersven/generate-ci_fix_hls_setup] Add cabal.project file to generate-ci
by Sven Tennie (＠supersven) 07 Feb '26

07 Feb '26

Sven Tennie pushed to branch wip/supersven/generate-ci_fix_hls_setup at Glasgow Haskell Compiler / GHC Commits: 756596a1 by Sven Tennie at 2026-02-07T09:11:20+01:00 Add cabal.project file to generate-ci This fixes the HLS setup for our CI code generation script (generate-ci). The project file simply makes `generate-ci` of the cabal file discoverable. - - - - - 1 changed file: - + .gitlab/generate-ci/cabal.project Changes: ===================================== .gitlab/generate-ci/cabal.project ===================================== @@ -0,0 +1 @@ +packages: . View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/756596a16906f34eb5c13abbcacfb38… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/756596a16906f34eb5c13abbcacfb38… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/supersven/generate-ci_fix_hls_setup] Add cabal.project file to generate-ci
by Sven Tennie (＠supersven) 07 Feb '26

07 Feb '26

Sven Tennie pushed to branch wip/supersven/generate-ci_fix_hls_setup at Glasgow Haskell Compiler / GHC Commits: a285c6c5 by Sven Tennie at 2026-02-07T08:57:36+01:00 Add cabal.project file to generate-ci This fixes the HLS setup for our CI code generation script (generate-ci). - - - - - 1 changed file: - + .gitlab/generate-ci/cabal.project Changes: ===================================== .gitlab/generate-ci/cabal.project ===================================== @@ -0,0 +1 @@ +packages: . View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a285c6c50fc13452859797ee210492a… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a285c6c50fc13452859797ee210492a… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] 53 commits: PPC NCG: Generate clear right insn at arch width
by Sven Tennie (＠supersven) 07 Feb '26

07 Feb '26

Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC Commits: 56db94f7 by Peter Trommler at 2026-01-26T11:26:18+01:00 PPC NCG: Generate clear right insn at arch width The clear right immediate (clrrxi) is only available in word and doubleword width. Generate clrrxi instructions at architecture width for all MachOp widths. Fixes #24145 - - - - - 5957a8ad by Wolfgang Jeltsch at 2026-01-27T06:11:40-05:00 Add operations for obtaining operating-system handles This contribution implements CLC proposal #369. It adds operations for obtaining POSIX file descriptors and Windows handles that underlie Haskell handles. Those operating system handles can also be obtained without such additional operations, but this is more involved and, more importantly, requires using internals. - - - - - 86a0510c by Greg Steuck at 2026-01-27T06:12:34-05:00 Move flags to precede patterns for grep and read files directly This makes the tests pass with non-GNU (i.e. POSIX-complicant) tools. There's no reason to use cat and pipe where direct file argument works. - - - - - 50761451 by Cheng Shao at 2026-01-27T21:51:23-05:00 ci: update darwin boot ghc to 9.10.3 This patch updates darwin boot ghc to 9.10.3, along with other related updates, and pays off some technical debt here: - Update `nixpkgs` and use the `nixpkgs-25.05-darwin` channel. - Update the `niv` template. - Update LLVM to 21 and update `llvm-targets` to reflect LLVM 21 layout changes for arm64/x86_64 darwin targets. - Use `stdenvNoCC` to prevent nix packaged apple sdk from being used by boot ghc, and manually set `DEVELOPER_DIR`/`SDKROOT` to enforce the usage of system-wide command line sdk for macos. - When building nix derivation for boot ghc, run `configure` via the `arch` command so that `configure` and its subprocesses pick up the manually specified architecture. - Remove the previous horrible hack that obliterates `configure` to make autoconf test result in true. `configure` now properly does its job. - Remove the now obsolete configure args and post install settings file patching logic. - Use `scheme-small` for texlive to avoid build failures in certain unused texlive packages, especially on x86_64-darwin. - - - - - 94dcd15e by Matthew Pickering at 2026-01-27T21:52:05-05:00 Evaluate backtraces for "error" exceptions at the moment they are thrown See Note [Capturing the backtrace in throw] and Note [Hiding precise exception signature in throw] which explain the implementation. This commit makes `error` and `throw` behave the same with regard to backtraces. Previously, exceptions raised by `error` would not contain useful IPE backtraces. I did try and implement `error` in terms of `throw` but it started to involve putting diverging functions into hs-boot files, which seemed to risky if the compiler wouldn't be able to see if applying a function would diverge. CLC proposal: https://github.com/haskell/core-libraries-committee/issues/383 Fixes #26751 - - - - - ef35e3ea by Teo Camarasu at 2026-01-27T21:52:46-05:00 ghc-internal: move all Data instances to Data.Data Most instances of Data are defined in GHC.Internal.Data.Data. Let's move all remaining instance there. This moves other modules down in the dependency hierarchy allowing for more parallelism, and it decreases the likelihood that we would need to load this heavy .hi file if we don't actually need it. Resolves #26830 Metric Decrease: T12227 T16875 - - - - - 5e0ec555 by sheaf at 2026-01-28T06:56:38-05:00 Add test case for #25679 This commit adds the T25679 test case. The test now passes, thanks to commit 1e53277af36d3f0b6ad5491f70ffc5593a49dcfd. Fixes #25679 - - - - - f1cd1611 by sheaf at 2026-01-28T06:56:38-05:00 Improve defaulting of representational equalities This commit makes the defaulting of representational equalities, introduced in 1e53277a, a little bit more robust. Now, instead of calling the eager unifier, it calls the full-blown constraint solver, which means that it can handle some subtle situations, e.g. involving functional dependencies and type-family injectivity annotations, such as: type family F a = r | r -> a type instance F Int = Bool [W] F beta ~R Bool - - - - - 25edf516 by sheaf at 2026-01-28T06:56:38-05:00 Improve errors for unsolved representational equalities This commit adds a new field of CtLoc, CtExplanations, which allows the typechecker to leave some information about what it has done. For the moment, it is only used to improve error messages for unsolved representational equalities. The typechecker will now accumulate, when unifying at representational role: - out-of-scope newtype constructors, - type constructors that have nominal role in a certain argument, - over-saturated type constructors, - AppTys, e.g. `c a ~R# c b`, to report that we must assume that 'c' has nominal role in its parameters, - data family applications that do not reduce, potentially preventing newtype unwrapping. Now, instead of having to re-construct the possible errors after the fact, we simply consult the CtExplanations field. Additionally, this commit modifies the typechecker error messages that concern out-of-scope newtype constructors. The error message now depends on whether we have an import suggestion to provide to the user: - If we have an import suggestion for the newtype constructor, the message will be of the form: The data constructor MkN of the newtype N is out of scope Suggested fix: add 'MkN' to the import list in the import of 'M' - If we don't have any import suggestions, the message will be of the form: NB: The type 'N' is an opaque newtype, whose constructor is hidden Fixes #15850, #20289, #20468, #23731, #25949, #26137 - - - - - 4d0e6da1 by Simon Peyton Jones at 2026-01-28T06:57:19-05:00 Fix two bugs in short-cut constraint solving There are two main changes here: * Use `isSolvedWC` rather than `isEmptyWC` in `tryShortCutSolver` The residual constraint may have some fully-solved, but still-there implications, and we don't want them to abort short cut solving! That bug caused #26805. * In the short-cut solver, we abandon the fully-solved residual constraint; but we may thereby lose track of Givens that are needed, and either report them as redundant or prune evidence bindings that are in fact needed. This bug stopped the `constraints` package from compiling; see the trail in !15389. The second bug led me to (another) significant refactoring of the mechanism for tracking needed EvIds. See the new Note [Tracking needed EvIds] in GHC.Tc.Solver.Solve It's simpler and much less head-scratchy now. Some particulars: * An EvBindsVar now tracks NeededEvIds * We deal with NeededEvIds for an implication only when it is fully solved. Much simpler! * `tryShortCutTcS` now takes a `TcM WantedConstraints` rather than `TcM Bool`, so that is can plumb the needed EvIds correctly. * Remove `ic_need` and `ic_need_implic` from Implication (hooray), and add `ics_dm` and `ics_non_dm` to `IC_Solved`. Pure refactor * Shorten data constructor `CoercionHole` to `CH`, following general practice in GHC. * Rename `EvBindMap` to `EvBindsMap` for consistency - - - - - 662480b7 by Cheng Shao at 2026-01-28T06:58:00-05:00 ci: use debian validate bindists instead of fedora release bindists in testing stage This patch changes the `abi-test`, `hadrian-multi` and `perf` jobs in the full-ci pipeline testing stage to use debian validate bindists instead of fedora release bindists, to increase pipeline level parallelism and allow full-ci pipelines to complete earlier. Closes #26818. - - - - - 39581ec6 by Cheng Shao at 2026-01-28T06:58:40-05:00 ci: run perf test with -j$cores This patch makes the perf ci job compile Cabal with -j$cores to speed up the job. - - - - - 607b287b by Wolfgang Jeltsch at 2026-01-28T15:41:53+02:00 Remove `GHC.Desugar` from `base` `GHC.Desugar` was deprecated and should have been removed in GHC 9.14. However, the removal was forgotten, although there was a code block that was intended to trigger a compilation error when the GHC version in use was 9.14 or later. This code sadly didn’t work, because the `__GLASGOW_HASKELL__` macro was misspelled as `__GLASGOW_HASKELL`. - - - - - e8f5a45d by sterni at 2026-01-29T04:19:18-05:00 users_guide: fix runtime error during build with Sphinx 9.1.0 Appears that pathto is stricter about what it accepts now. Tested Sphinx 8.2.3 and 9.1.0 on the ghc-9.10 branch. Resolves #26810. Co-authored-by: Martin Weinelt <hexa(a)darmstadt.ccc.de> - - - - - ce2d62fb by Jessica Clarke at 2026-01-29T19:48:51-05:00 PPC NCG: Use libcall for 64-bit cmpxchg on 32-bit PowerPC There is no native instruction for this, and even if there were a register pair version we could use, the implementation here is assuming the values fit in a single register, and we end up only using / defining the low halves of the registers. Fixes: b4d39adbb5 ("PrimOps: Add CAS op for all int sizes") Fixes: #23969 - - - - - 43d97761 by Michael Karcher at 2026-01-29T19:49:43-05:00 NCG for PPC: add pattern for CmmRegOff to iselExpr64 Closes #26828 - - - - - aeeb4a20 by Matthew Pickering at 2026-01-30T11:42:47-05:00 determinism: Use deterministic map for Strings in TyLitMap When generating typeable evidence the types we need evidence for all cached in a TypeMap, the order terms are retrieved from a type map determines the order the bindings appear in the program. A TypeMap is quite diligent to use deterministic maps, apart from in the TyLitMap, which uses a UniqFM for storing strings, whose ordering depends on the Unique of the FastString. This can cause non-deterministic .hi and .o files. An unexpected side-effect is the error message but RecordDotSyntaxFail8 changing. I looked into this with Sam and this change caused the constraints to be solved in a different order which results in a slightly different error message. I have accepted the new test, since the output before was non-deterministic and the new output is consistent with the other messages in that file. Fixes #26846 - - - - - 9e4d70c2 by Andrew Lelechenko at 2026-01-30T11:43:29-05:00 Upgrade text submodule to 2.1.4 - - - - - 631fa5ae by Recursion Ninja at 2026-01-31T22:30:11+00:00 Decouple `L.S.H.Decls` from importing `GHC.Types.Basic` Data-types within `GHC.Types.Basic` which describe components of the AST are migrated to `Language.Haskell.Syntax.Basic`. Related function definitions are also moved. Types moved to L.H.S. because they are part of the AST: * TopLevelFlag * RuleName Types moved from L.H.S. to GHC.Hs. because they are not needed in the AST: * TyConFlavour * TypeOrData * NewOrData Migrated instances: * `Outputable` instances moved to in `GHC.Utils.Outputable` * `Binary` instance of `Boxity` moved to to `GHC.Utils.Binary` * Other `Binary` instances are orphans to be migrated later. The `OverlapMode` data-type is given a TTG extension point. The `OverlapFlag` data-type, which depends on `OverlapMode`, is updated to support `OverlapMode` with a GHC "pass" type paramerter. In order to avoid module import cycles, `OverlapMode` and `OverlapFlag` are migrated to new modules (no way around this). * Migrated `OverlapMode` to new module `Language.Haskell.Syntax.Overlap` * Migrated `OverlapFlag` to new module `GHC.Hs.Decls.Overlap` - - - - - 9769cc03 by Simon Hengel at 2026-02-01T04:21:03-05:00 Update the documentation for MultiWayIf (fixes #25376) (so that it matches the implementation) - - - - - 5fc9442a by Peter Trommler at 2026-02-01T04:21:44-05:00 hadrian: Fix dependency generation for assembler Assembler files allow # for comments unless in column 1. A modern cpp for C treats those a preprocessor directives. We tell gcc that a .S file is assembler with cpp and not C. Fixes #26819 - - - - - 269c4087 by Simon Peyton Jones at 2026-02-01T19:38:10-05:00 Include current phase in the range for rule/unfoldings This MR fixes a bad loop in the compiler: #26826. The fix is to add (WAR2) to Note [What is active in the RHS of a RULE or unfolding?] in GHC.Core.Opt.Simplify.Utils - - - - - ddf1434f by Vladislav Zavialov at 2026-02-01T19:38:52-05:00 Refactor: merge HsMultilineString into HsString (#26860) Before this patch, HsLit defined two separate constructors to represent single-line and multi-line strings: data HsLit x ... | HsString (XHsString x) FastString | HsMultilineString (XHsMultilineString x) FastString I found this to be an unnecessary complication and an obstacle to unifying HsLit with HsTyLit. Now we use HsString for both kinds of literals. One user-facing change here is `ppr (HsString st s)` behaving differently for single-line strings containing newlines: x = "first line \ \asdf\n\ \second line" Previously, the literal was fed to `ftext` with its newlines, producing an ill-formed SDoc. This issue is now addressed by using `split` for both single-line and multi-line strings: vcat $ map text $ split '\n' (unpackFS src) See the parser/should_fail/T26860ppr test. In addition (and unrelatedly to the main payload of this patch), drop the unused pmPprHsLit helper. - - - - - 2b4f463c by Simon Peyton Jones at 2026-02-02T17:32:32+00:00 Remove exprIsCheap from doFloatFromRhs See #26854 and Note [Float when expandable] This patch simplifies the code, by removing an extra unnecessary test. - - - - - 9db7f21f by Brandon Chinn at 2026-02-03T09:15:10-05:00 Refactor: make function patterns exhaustive Also added missing (==) logic for: * HsMultilineString * HsInt{8,16,32} * HsWord{8,16,32} - - - - - aa9c5e2c by Hécate Kleidukos at 2026-02-03T15:58:35-05:00 driver: Hide source paths at verbosity level 1 by default - - - - - c64cca1e by mangoiv at 2026-02-03T15:59:29-05:00 ExplicitLevelImports: check staging for types just like for values Previously, imported types were entirely exempted from staging checks as the implicit stage persistance assumed to be all imported types to be well staged. ExplicitLevelImports' change specification, however, does not do such an exemption. Thus we want to introduce such a check, just like we have for values. ExplicitLevelImports does not, however, talk about local names - from its perspective, we could theoretically keep treating locally introduced types specially - e.g. an ill-staged used in a quote would only emit a warning, not an error. To allow for a potential future migration away from such wrinkles as the staging check in notFound (see Note [Out of scope might be a staging error]) we consistently do the strict staging check that we also do for value if ExplicitLevelImports is on. Closes #26098 - - - - - 5f0dbeb6 by Simon Hengel at 2026-02-03T16:00:12-05:00 Use Haddock formatting in deprecation message of `initNameCache` - - - - - 01ecb612 by Andreas Klebinger at 2026-02-04T09:56:25-05:00 testsuite: Explicitly use utf-8 encoding in rts-includes linter. Not doing so caused failures on windows, as python failed to pick a reasonable encoding even with locale set. Fixes #26850 - - - - - ea0d1317 by Zubin Duggal at 2026-02-04T09:57:06-05:00 Bump transformers submodule to 0.6.3.0 Fixes #26790 - - - - - cbe4300e by Simon Peyton Jones at 2026-02-05T04:31:04-05:00 Fix subtle bug in GHC.Core.Utils.mkTick This patch fixes a decade-old bug in `mkTick`, which could generate type-incorrect code! See the diagnosis in #26772. The new code is simpler and easier to understand. (As #26772 says, I think it could be improved further.) - - - - - a193a8da by Simon Peyton Jones at 2026-02-05T04:31:04-05:00 Modify a debug-trace in the Simplifier ...just to show a bit more information. - - - - - b579dfdc by Simon Peyton Jones at 2026-02-05T04:31:04-05:00 Fix long-standing interaction between ticks and casts The code for Note [Eliminate Identity Cases] was simply wrong when ticks and casts interacted. This patch fixes the interaction. It was shown up when validating #26772, although it's not the exactly the bug that's reported by #26772. Nor is it easy to reproduce, hence no regression test. - - - - - fac0de1e by Cheng Shao at 2026-02-05T04:31:49-05:00 libraries: bump Cabal submodule to 3.16.1.0 - - - - - 00589122 by Cheng Shao at 2026-02-05T04:31:49-05:00 libraries: bump deepseq submodule to 1.5.2.0 Also: - Get rid of usage of deprecated `NFData` function instance in the compiler - `T21391` still relies on `NFData` function instance, add `-Wno-deprecations` for the time being. - - - - - 84474c71 by Cheng Shao at 2026-02-05T04:31:50-05:00 libraries: bump directory submodule to 1.3.10.1 - - - - - 1a9f4662 by Cheng Shao at 2026-02-05T04:31:50-05:00 libraries: bump exceptions submodule to 0.10.12 - - - - - 772a5fca by Matthew Pickering at 2026-02-07T06:55:00+00:00 Add missing req_interp modifier to T18441fail3 and T18441fail19 These tests require the interpreter but they were failing in a different way with the javascript backend because the interpreter was disabled and stderr is ignored by the test. - - - - - a609849f by Matthew Pickering at 2026-02-07T06:55:00+00:00 Use explicit syntax rather than pure - - - - - f5ac77f0 by Matthew Pickering at 2026-02-07T06:55:00+00:00 packaging: correctly propagate build/host/target to bindist configure script At the moment the host and target which we will produce a compiler for is fixed at the initial configure time. Therefore we need to persist the choice made at this time into the installation bindist as well so we look for the right tools, with the right prefixes at install time. In the future, we want to provide a bit more control about what kind of bindist we produce so the logic about what the host/target will have to be written by hadrian rather than persisted by the configure script. In particular with cross compilers we want to either build a normal stage 2 cross bindist or a stage 3 bindist, which creates a bindist which has a native compiler for the target platform. Fixes #21970 - - - - - c29de7ff by Matthew Pickering at 2026-02-07T06:55:00+00:00 hadrian: Fill in more of the default.host toolchain file When you are building a cross compiler this file will be used to build stage1 and it's libraries, so we need enough information here to work accurately. There is still more work to be done (see for example, word size is still fixed). - - - - - 708d2bbf by Matthew Pickering at 2026-02-07T06:55:00+00:00 hadrian: Disable docs when cross compiling Before there were a variety of ad-hoc places where doc building was disabled when cross compiling. * Some CI jobs sets --docs=none in gen_ci.hs * Some CI jobs set --docs=none in .gitlab/ci.sh * There was some logic in hadrian to not need the ["docs"] target when making a bindist. Now the situation is simple: * If you are cross compiling then defaultDocsTargets is empty by default. In theory, there is no reason why we can't build documentation for cross compiler bindists, but this is left to future work to generalise the documentation building rules to allow this (#24289) - - - - - f8fb6ac0 by Matthew Pickering at 2026-02-07T06:55:00+00:00 hadrian: Build stage 2 cross compilers * Most of hadrian is abstracted over the stage in order to remove the assumption that the target of all stages is the same platform. This allows the RTS to be built for two different targets for example. * Abstracts the bindist creation logic to allow building either normal or cross bindists. Normal bindists use stage 1 libraries and a stage 2 compiler. Cross bindists use stage 2 libararies and a stage 2 compiler. * hadrian: Make binary-dist-dir the default build target. This allows us to have the logic in one place about which libraries/stages to build with cross compilers. Fixes #24192 New hadrian target: * `binary-dist-dir-cross`: Build a cross compiler bindist (compiler = stage 1, libraries = stage 2) This commit also contains various changes to make stage2 compilers feasible. ------------------------- Metric Decrease: ManyAlternatives MultiComponentModulesRecomp MultiLayerModulesRecomp T10421 T12425 T12707 T13035 T13379 T15703 T16577 T18698a T18698b T18923 T1969 T21839c T3294 T4801 T5030 T5321Fun T5642 T783 T9198 T9872d T9961 parsing001 T5321FD T6048 T12227 T18140 T18282 T9233 ------------------------- Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com> Fix rebase: settings-use-distro-mingw is now staged - - - - - f81de46e by Matthew Pickering at 2026-02-07T06:55:00+00:00 ci: Test cross bindists We remove the special logic for testing in-tree cross compilers and instead test cross compiler bindists, like we do for all other platforms. - - - - - fe171815 by Matthew Pickering at 2026-02-07T06:55:00+00:00 ci: Introduce CROSS_STAGE variable In preparation for building and testing stage3 bindists we introduce the CROSS_STAGE variable which is used by a CI job to determine what kind of bindist the CI job should produce. At the moment we are only using CROSS_STAGE=2 but in the future we will have some jobs which set CROSS_STAGE=3 to produce native bindists for a target, but produced by a cross compiler, which can be tested on by another CI job on the native platform. CROSS_STAGE=2: Build a normal cross compiler bindist CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target - - - - - cf2d2159 by Matthew Pickering at 2026-02-07T06:55:00+00:00 hadrian: Refactor system-cxx-std-lib rules0 I noticed a few things wrong with the hadrian rules for `system-cxx-std-lib` rules. * For `text` there is an ad-hoc check to depend on `system-cxx-std-lib` outside of `configurePackage`. * The `system-cxx-std-lib` dependency is not read from cabal files. * Recache is not called on the packge database after the `.conf` file is generated, a more natural place for this rule is `registerRules`. Treating this uniformly like other packages is complicated by it not having any source code or a cabal file. However we can do a bit better by reporting the dependency firstly in `PackageData` and then needing the `.conf` file in the same place as every other package in `configurePackage`. Fixes #25303 - - - - - 2e3b1cb3 by Sven Tennie at 2026-02-07T06:55:00+00:00 ci: Increase timeout for emulators Test runs with emulators naturally take longer than on native machines. Generate jobs.yml - - - - - 53e262ff by Sven Tennie at 2026-02-07T06:55:00+00:00 ghc: Distinguish between having an interpreter and having an internal one Otherwise, we fail with warnings when compiling tools. Actually, these are related but different things: - ghc can run an interpreter (either internal or external) - ghc is compiled with an internal interpreter - - - - - 37572da9 by Matthew Pickering at 2026-02-07T06:55:00+00:00 ci: Javascript don't set CROSS_EMULATOR There is no CROSS_EMULATOR needed to run javascript binaries, so we don't set the CROSS_EMULATOR to some dummy value. - - - - - bd397a5b by Sven Tennie at 2026-02-07T06:55:00+00:00 Javascript skip T23697 See #22355 about how HSC2HS and the Javascript target don't play well together. - - - - - 4b06bfbb by Sven Tennie at 2026-02-07T06:55:00+00:00 Mark T24602 as fragile It was skipped before (due to CROSS_EMULATOR being set, which changed for JS), so we don't make things worse by marking it as fragile. - - - - - 4f307a1f by Sven Tennie at 2026-02-07T06:55:00+00:00 Windows needs NM_STAGE0 as well The stage0 always needs nm. - - - - - 81f7af42 by Sven Tennie at 2026-02-07T06:55:00+00:00 T17912 sometimes works for windows-validate This seems to be timing related. However, just simply increasing the timeout (sleep) statement of this test didn't help. Maybe, it has been flaky on CI before. - - - - - 324 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - .gitlab/darwin/nix/sources.json - .gitlab/darwin/toolchain.nix - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC/CmmToAsm/PPC/CodeGen.hs - compiler/GHC/Core/Coercion.hs - compiler/GHC/Core/FamInstEnv.hs - compiler/GHC/Core/InstEnv.hs - compiler/GHC/Core/Map/Type.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/Simplify/Env.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/Opt/Simplify/Utils.hs - compiler/GHC/Core/Opt/WorkWrap.hs - compiler/GHC/Core/Predicate.hs - compiler/GHC/Core/TyCo/Rep.hs - compiler/GHC/Core/TyCo/Subst.hs - compiler/GHC/Core/TyCo/Tidy.hs - compiler/GHC/Core/TyCon/RecWalk.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/Data/Maybe.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Decls.hs - + compiler/GHC/Hs/Decls/Overlap.hs - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Errors/Types.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Syntax.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/String.hs - compiler/GHC/Rename/Env.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Splice.hs - compiler/GHC/Rename/Splice.hs-boot - compiler/GHC/Rename/Unbound.hs - compiler/GHC/Tc/Deriv.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/Default.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Instance/Family.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/Equality.hs - compiler/GHC/Tc/Solver/InertSet.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/Evidence.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Utils/Env.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Basic.hs - compiler/GHC/Types/Error/Codes.hs - compiler/GHC/Types/InlinePragma.hs - compiler/GHC/Types/Name.hs - compiler/GHC/Types/Name/Cache.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Types/Var.hs - compiler/GHC/Unit/Module/ModIface.hs - compiler/GHC/Unit/Types.hs - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Monad.hs - compiler/GHC/Utils/Outputable.hs - compiler/GHC/Utils/Trace.hs - compiler/Language/Haskell/Syntax/Basic.hs - compiler/Language/Haskell/Syntax/Decls.hs - + compiler/Language/Haskell/Syntax/Decls/Overlap.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/Language/Haskell/Syntax/Lit.hs - compiler/ghc.cabal.in - configure.ac - distrib/configure.ac.in - docs/users_guide/9.16.1-notes.rst - docs/users_guide/exts/multiway_if.rst - docs/users_guide/rtd-theme/layout.html - ghc/GHC/Driver/Session/Mode.hs - ghc/GHCi/UI.hs - ghc/Main.hs - ghc/ghc-bin.cabal.in - hadrian/README.md - hadrian/bindist/config.mk.in - hadrian/cfg/default.host.target.in - + hadrian/cfg/system.config.host.in - hadrian/cfg/system.config.in - + hadrian/cfg/system.config.target.in - hadrian/hadrian.cabal - hadrian/src/Base.hs - + hadrian/src/BindistConfig.hs - hadrian/src/Builder.hs - hadrian/src/Context.hs - hadrian/src/Expression.hs - hadrian/src/Flavour.hs - hadrian/src/Flavour/Type.hs - hadrian/src/Hadrian/Builder.hs - hadrian/src/Hadrian/Haskell/Cabal/Parse.hs - hadrian/src/Hadrian/Haskell/Cabal/Type.hs - hadrian/src/Hadrian/Haskell/Hash.hs - hadrian/src/Hadrian/Oracles/TextFile.hs - hadrian/src/Oracles/Flag.hs - hadrian/src/Oracles/Flavour.hs - hadrian/src/Oracles/Setting.hs - hadrian/src/Oracles/TestSettings.hs - hadrian/src/Packages.hs - hadrian/src/Rules.hs - hadrian/src/Rules/BinaryDist.hs - hadrian/src/Rules/CabalReinstall.hs - hadrian/src/Rules/Compile.hs - hadrian/src/Rules/Documentation.hs - hadrian/src/Rules/Generate.hs - hadrian/src/Rules/Gmp.hs - + hadrian/src/Rules/Libffi.hs - hadrian/src/Rules/Library.hs - hadrian/src/Rules/Program.hs - hadrian/src/Rules/Register.hs - hadrian/src/Rules/Test.hs - hadrian/src/Settings.hs - hadrian/src/Settings/Builders/Cabal.hs - hadrian/src/Settings/Builders/Cc.hs - hadrian/src/Settings/Builders/Common.hs - hadrian/src/Settings/Builders/Configure.hs - hadrian/src/Settings/Builders/DeriveConstants.hs - hadrian/src/Settings/Builders/Ghc.hs - hadrian/src/Settings/Builders/Hsc2Hs.hs - hadrian/src/Settings/Builders/RunTest.hs - hadrian/src/Settings/Builders/SplitSections.hs - hadrian/src/Settings/Default.hs - hadrian/src/Settings/Flavours/Benchmark.hs - hadrian/src/Settings/Flavours/Development.hs - hadrian/src/Settings/Flavours/GhcInGhci.hs - hadrian/src/Settings/Flavours/Performance.hs - hadrian/src/Settings/Flavours/Quick.hs - hadrian/src/Settings/Flavours/QuickCross.hs - hadrian/src/Settings/Flavours/Quickest.hs - hadrian/src/Settings/Flavours/Validate.hs - hadrian/src/Settings/Packages.hs - hadrian/src/Settings/Program.hs - hadrian/src/Settings/Warnings.hs - libraries/Cabal - libraries/base/base.cabal.in - libraries/base/changelog.md - − libraries/base/src/GHC/Desugar.hs - + libraries/base/src/System/IO/OS.hs - libraries/base/tests/IO/all.T - + libraries/base/tests/IO/osHandles001FileDescriptors.hs - + libraries/base/tests/IO/osHandles001FileDescriptors.stdout - + libraries/base/tests/IO/osHandles001WindowsHandles.hs - + libraries/base/tests/IO/osHandles001WindowsHandles.stdout - + libraries/base/tests/IO/osHandles002FileDescriptors.hs - + libraries/base/tests/IO/osHandles002FileDescriptors.stderr - + libraries/base/tests/IO/osHandles002FileDescriptors.stdin - 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