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LDC 1.18.0 (2019-10-16)

Big news

  • Frontend, druntime and Phobos are at version 2.088.1. (#3143, #3161, #3176, #3190)
  • Support for LLVM 9.0. The prebuilt packages have been upgraded to LLVM 9.0.0. (#3166)
  • Preliminary Android CI, incl. experimental prebuilt armv7a package generation (API level 21, i.e., Android 5+). (#3164)
  • Bundled dub upgraded to v1.17.0+ with improved LDC support, incl. cross-compilation (e.g., --arch=x86_64-pc-windows-msvc). (dlang/dub#1755, Wiki)
  • Init symbols of zero-initialized structs are no longer emitted. (#3131)
  • druntime: DMD-compatible {load,store}Unaligned and prefetch added to core.simd. (ldc-developers/druntime#163)
  • JIT improvements, incl. multi-threaded compilation. (#2758, #3154, #3174)

Platform support

  • Supports LLVM 3.9 - 9.0.

Bug fixes

  • Don't error out when initializing a void vector. (#3130, #3139)
  • druntime: Fix exception chaining for latest MSVC runtime v14.23, shipping with Visual Studio 2019 v16.3. (ldc-developers/druntime#164)
  • Keep lvalue-ness when casting associative array to another AA. (#3162, #3179)

LDC 1.17.0 (2019-08-25)

Big news

Platform support

  • Supports LLVM 3.9 - 8.0.

Bug fixes

  • Fix for v1.16.0 regression when returning void expressions. (#3094, #3095)
  • -lowmem (and on Windows, --DRT-* options) in response files (e.g., used by dub) aren't ignored anymore. (#3086)
  • Windows: LDC and LDMD now internally use UTF-8 strings only, incl. command-line options and environment variables. The LDC install dir, source file names etc. can now contain non-ASCII chars. For proper console output, especially to stderr, you'll need Windows 10 v1809+ and may need to set a Unicode console font (e.g., Consolas). (#611, #3086)
  • Android: Linker errors when building LDC/LDMD should be fixed. (#3128)
  • Support for recent gdmd as D host compiler. Thanks Moritz! (#3087)
  • Do not require gold plugin when linking with LLD. (#3105)
  • Enable linker stripping on FreeBSD (with non-bfd linkers). (#3106)
  • Some JIT bind fixes. (#3099, #3100)

Known issues

  • If you encounter segfaults in GC worker threads with shared druntime on Linux that are fixed by disabling new parallel GC marking (e.g., via --DRT-gcopt=parallel:0 in executable cmdline), please let us know about it: #3127

LDC 1.16.0 (2019-06-20)

Big news

  • Frontend, druntime and Phobos are at version 2.086.1, incl. a DIP1008 fix. (#3062, #3076, #3091)
  • Non-Windows x86: Faster real versions of std.math.{tan,expi}. (#2855)
  • dcompute: New __traits(getTargetInfo, "dcomputeTargets"). (#3090)

Platform support

  • Supports LLVM 3.9 - 8.0 (incl. 7.1).

Bug fixes

  • Make pragma(LDC_no_typeinfo) actually elide TypeInfo emission for structs, classes and interfaces. (#3068)
  • Windows: Fix DLL entry point in MinGW-based libs. (https://github.com/ldc-developers/mingw-w64-libs/commit/8d930c129daa798379b3d563617847f8e895f43e)
  • WebAssembly: Use --export-dynamic when linking with LLD 8+. (#3023, #3072)
  • Fix corrupt this in functions nested in in/out contracts. (45460a1)
  • Fix identity comparisons of integral vectors. (a44c78f)
  • Improved handling of unsupported vector ops. (a44c78f)
  • uClibc: Fix C assert calls. (#3078, #3082)
  • Improved error message on global variable collision. (#3080, #3081)

LDC 1.15.0 (2019-04-06)

Big news

  • Frontend, druntime and Phobos are at version 2.085.1, incl. new command-line options -preview, -revert, -checkaction=context, -verrors-context and -extern-std. (#3003, #3039, #3053)
    • The Objective-C improvements from DMD 2.085 are not implemented. (#3007)
  • Support for LLVM 8.0. The prebuilt packages have been upgraded to LLVM 8.0.0 and include the Khronos SPIRV-LLVM-Translator, so that dcompute can now emit OpenCL too. (#3005)
  • Compiler memory requirements can now be reduced via the new -lowmem switch, which enables the garbage collector for the front-end and sacrifices compile times for less required memory. In some cases, the overall max process memory can be reduced by more than 60%; see ldc-developers#2916 (comment) for some numbers. (#2916)
    • Note for package maintainers: this feature requires a recent D host compiler (most notably, it doesn't work with ltsmaster), ideally LDC 1.15 itself due to important GC memory overhead improvements in 2.085 druntime.
  • Support for generic @llvmAttr("name") parameter UDAs, incl. new @restrict with C-like semantics. (#3043)
  • macOS: 32-bit support was dropped in the sense of not being CI-tested anymore and the prebuilt macOS package now containing x86_64 libraries only. MACOSX_DEPLOYMENT_TARGET for the prebuilt package has been raised from 10.8 to 10.9.
  • Prebuilt packages don't depend on libtinfo and libedit anymore. (#1827, #3019)
  • x86: SSSE3 isn't required for the prebuilt packages and generated optimized binaries anymore. (#3045)

Platform support

  • Supports LLVM 3.9 - 8.0.

Bug fixes

  • Implicit cross-module-inlining of functions annotated with pragma(inline, true) without explicit -enable-cross-module-inlining has been restored. (#2552, #3014)
  • Propagate well-known length of newly allocated dynamic arrays for better optimizability. (#3041, #3042)
  • JIT: Support implicit __chkstk calls for Windows targets, e.g., for large stack allocations. (#3051)

Internals

  • Addition of Azure Pipelines as CI service. It is the new main CI service and responsible for creating all prebuilt x86(_64) packages. AppVeyor has been dropped completely and CircleCI rededicated. (#2998)

LDC 1.14.0 (2019-02-17)

Big news

  • Frontend, druntime and Phobos are at version 2.084.1, incl. new command-line options -mixin, -{enable,disable}-switch-errors and -checkaction. (#2946, #2977, #2999)
    • Options -release, -d-debug and -unittest don't override preceding, more specific options (-{enable,disable}-{asserts,invariants,preconditions,postconditions,contracts}) anymore.
  • Linking WebAssembly doesn't require -link-internally (integrated LLD) anymore; an external linker (default: wasm-ld, override with -linker) can be used as well. (#2951)
  • Prebuilt Windows packages include LTO-able 32-bit druntime/Phobos too (previously: Win64 only).
  • AddressSanitizer support for fibers (requires rebuilding the runtime libraries with CMake option RT_SUPPORT_SANITIZERS=ON). (#2975, ldc-developers/druntime#152)
  • Support pragma(LDC_extern_weak) for function declarations - if the function isn't available when linking, its address is null. (#2984)

Platform support

  • Supports LLVM 3.9 - 7.0.

Bug fixes

  • Fix C++ mangling regression for functions with multiple real parameters introduced with v1.13, preventing to build DMD. (#2954, dlang/dmd#9129)
  • Fix context of some nested aggregates. (#2960, #2969)
  • Support templated LLVM intrinsics with vector arguments. (#2962, #2971)
  • Avoid crashes with -allinst (fix emission of only speculatively nested functions). (#2932, #2940)
  • Fix XRay support for LLVM 7+. (#2965)
  • AArch64: Fix DMD-style profile measurements. (#2950)
  • Be less picky about placement of pragmas (allow intermediate extern(C) etc.). (#2599)
  • MSVC: Fix real C++ mangling to match Visual C++ long double. (#2974)
  • Fix bad ICE noticed when building protobuf-d. (#2990, #2992)
  • Fix ICE when directly indexing vector return value. (#2988, #2991)
  • Fix identity comparisons of complex numbers. (#2918, #2993)
  • MIPS32 fix for core.stdc.stdarg. (#2989, ldc-developers/druntime#153)
  • Fix core.atomic.cas() for 64-bit floating-point values. (#3000, #3001)

Known issues

  • Buggy older ld.bfd linker versions may wrongly strip out required symbols, e.g., ModuleInfos (so that e.g. no module ctors/dtors are run). LDC defaults to ld.gold on Linux.

LDC 1.13.0 (2018-12-16)

Big news

  • Frontend, druntime and Phobos are at version 2.083.1. (#2878, #2893, #2920, #2933)
  • The Windows packages are now fully self-sufficient, i.e., a Visual Studio/C++ Build Tools installation isn't required anymore, as we now ship with MinGW-w64-based libraries, similar to DMD. Check out the included README.txt for all relevant details. (dlang/installer#346, ldc-developers#2886, Wiki: Cross-compiling with LDC)
  • Debug info improvements:
    • For GDB: printing global and imported symbols, non-member and member function calls. (#2826)
    • For Visual Studio and mago: names, by-value params, nested variables. (#2895, #2908, #2909, #2912)
    • Associative arrays now showing up properly (at least with mago), not as opaque void* anymore. (#2869)
    • -gc now translates D names to C++ ones, e.g., to use the regular Visual Studio debugger (bypassing mago) and as preparation for VS Code debugging with Microsoft's C/C++ plug-in (screenshots). Thanks to Oleksandr for this contribution and the AA fix! (#2869)
  • New command-line option -fvisibility=hidden to hide functions/globals not marked as export (for non-Windows targets), primarily to reduce the size of shared libraries. Thanks to Andrey for stepping up! (#2894, #2923)
  • Dropped support for LLVM 3.7 and 3.8. (#2872)
  • LLVM for prebuilt packages upgraded to v7.0.1.
  • Linux: now defaulting to ld.gold linker in general, not just with -flto=thin, as buggy older ld.bfd versions may wrongly strip out required symbols (change with -linker). (#2870)
  • Improved support for Android/x86[_64], musl libc and FreeBSD/AArch64. (#2917, ldc-developers/druntime#146)
  • LDC-specific druntime: ldc.simd.inlineIR moved/renamed to ldc.llvmasm.__ir (with deprecated legacy alias). (#2931)
  • New CMake option COMPILE_D_MODULES_SEPARATELY builds D files in the DDMD frontend separately to reduce the time required to build LDC with many CPU cores and/or for iterative development. (#2914)

Platform support

  • Supports LLVM 3.9 - 7.0.
  • Alpine linux/x64: built against Musl libc to support Docker images based on the Alpine distro, requires the llvm5-libs, musl-dev, binutils-gold and gcc packages to build and link D apps and the tzdata and curl-dev packages for certain stdlib modules.

Bug fixes

  • 32-bit Android/ARM regression introduced in v1.12. (#2892)
  • Non-Windows x86_64 ABI fixes wrt. what's passed in registers, relevant for C[++] interop. (#2864)
  • Alignment of scope allocated class instances. (#2919)

LDC 1.12.0 (2018-10-13)

Big news

  • Frontend, druntime and Phobos are at version 2.082.1. (#2818, #2837, #2858, #2873)
    • Significant performance improvements for some transcendental std.math functions in single and double precision, at least for x86. (dlang/phobos#6272 (comment))
  • Support for LLVM 7, which is used for the prebuilt packages. Due to an LLVM 7.0.0 regression, the prebuilt x86[_64] LDC binaries require a CPU with SSSE3, and so will your optimized binaries (unless compiling with -mattr=-ssse3). (#2850)
  • JIT compilation: new ldc.dynamic_compile.bind function with interface similar to C++ std::bind, allowing to generate efficient specialized versions of functions (much like Easy::jit for C++). (#2726)
  • LTO now working for Win64 too; the prebuilt package includes the required external LLD linker and the optional LTO default libs. Enable as usual with -flto=<thin|full> [-defaultlib=druntime-ldc-lto,phobos2-ldc-lto]. (#2774)
  • Config file: new lib-dirs array for directories to be searched for libraries, incl. LLVM compiler-rt libraries. (#2790)

Platform support

Bug fixes

  • Fix IR-based PGO on Windows (requires our LLVM fork). (#2539)
  • Fix C++ class construction with D new on Posix. (#2801)
  • Android: No more text relocations in Phobos zlib, required for API level 23+. (#2822, #2835)
  • Declare extern const/immutable globals as IR constants. (#2849, #2852)
  • Fix issue when emitting both object and textual assembly files at once (-output-o -output-s). (#2847)
  • Support address of struct member as key/value in AA literal. (#2859, #2860)
  • Fix ICE when computing addresses relative to functions/labels. (#2865, #2867)

LDC 1.11.0 (2018-08-18)

Big news

  • Frontend, druntime and Phobos are at version 2.081.2. (#2752, #2772, #2776, #2791, #2815)
    • Add some support for classes without TypeInfos, for -betterC and/or a minimal (d)runtime. (#2765)
  • LLVM for prebuilt packages upgraded to v6.0.1. The x86_64 packages feature some more LLVM targets for cross-compilation (experiments): MIPS, MSP430, RISC-V and WebAssembly. (#2760)
  • Rudimentary support for compiling & linking directly to WebAssembly. See the dedicated Wiki page for how to get started. (#2766, #2779, #2785)
  • AArch64 (64-bit ARM) now mostly working on Linux/glibc and Android. Current ltsmaster/0.17.6 is able to bootstrap v1.11, which can also bootstrap itself; most tests pass. (Preliminary) CI has been set up. (#2802, #2817, #2813)
  • LDC on Windows now uses 80-bit compile-time reals. This allows for seamless cross-compilation to other x86(_64) targets, e.g., without real.min underflowing to 0 and real.max overflowing to infinity. (#2752)
  • New @naked UDA in ldc.attributes & enhanced functionality for @llvmAttr("<name>"). (#2773)

Platform support

  • Supports LLVM 3.7 - 6.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • extern(C++) on Posix: Pass non-PODs indirectly by value. (#2728)
  • extern(C++) on Windows/MSVC: Methods return all structs via hidden sret pointer. (#2720, #1935)
  • Make GC2Stack IR optimization pass work as intended. (#2750)
  • Work around inline assembly regression with LLVM 6 on Win32. The prebuilt Win32 package is now using LLVM 6.0.1 too. (#2629, #2770)
  • Fix overzealous check for multiple main() functions. (#2778)
  • Fix corrupt prefix in integrated LLD's console output. (#2781)
  • No context ptr for nested non-extern(D) functions. (#2808, #2809)

LDC 1.10.0 (2018-06-19)

Big news

  • Frontend, druntime and Phobos are at version 2.080.1. (#2665, #2719, #2737)
    • No support for Objective-C class/static methods yet. (#2670)
  • Breaking Win64 extern(D) ABI change: Pass vectors directly in registers, analogous to the MS vector calling convention. (#2714)
  • Config file: For cross-compilation, support additional sections named as regex for specific target triples, e.g., "86(_64)?-.*-linux": { … };; see the comment in etc/ldc2.conf. (#2718)

Platform support

  • Supports LLVM 3.7 - 6.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • CMake and druntime fixes for DragonFlyBSD, thanks Diederik! (#2690, #2691, #2692, ldc-developers/druntime#138, ldc-developers/druntime#139, ldc-developers/phobos#64)
  • DMD-style inline asm label naming issue in overloaded functions. (#2667, #2694)
  • Linux: misc. exception stack trace fixes & extensions, incl. default DWARF v4 debuginfo emission with LLVM 6. (#2677)
  • Predefine version D_HardFloat instead of D_SoftFloat for -float-abi=softfp. (#2678)
  • Bash completion installed to the wrong place with custom CMAKE_INSTALL_PREFIX. (#2679, #2179, #2693)
  • Default to ld.gold linker for ThinLTO on Linux. (#2696)
  • Fix compilation issues on 64-bit macOS with DMD host compiler ≥ 2.079. (#2703, #2704)
  • druntime: Fix core.stdc.stdint.(u)int64_t on 64-bit macOS etc. (#2700)
  • Define D_AVX and D_AVX2 if the target supports them. (#2711)
  • Fix sporadic front-end segfaults. (#2713)
  • Win64: Fix extern(C++) ABI wrt. passing small non-POD structs by value. (#2706)
  • Misc. druntime/Phobos fixes and upstream cherry-picks for ARM, AArch64, MIPS etc.
  • Fix potential LDC crashes when returning static array results from inline IR. (#2729)
  • Win64: Fix terminate handler for VC runtime DLL version 14.14.x.y. (#2739)

LDC 1.9.0 (2018-04-30)

Big news

  • Frontend, druntime and Phobos are at version 2.079.1, incl. new switches -i[=<pattern>] (include imports in compilation) and -Xi. (#2587)
    • Support a minimal (d)runtime. (#2641)
    • Win32 breaking ABI change: add extra underscore for mangled names of D symbols. (#2598)
    • No breaking ABI change for 64-bit macOS wrt. C++ mangling of D (u)long. It's still mangled as C++ (unsigned) long in order not to break size_t and ptrdiff_t interop, whereas DMD 2.079 mangles it as (unsigned) long long (which, in combination with missing core.stdc.config.cpp_(u)long, makes it impossible to represent a C++ size_t/ptrdiff_t with DMD 2.079 on 64-bit macOS).
  • Support for LLVM 6. It's used for the prebuilt packages, except for the 32-bit Windows package (due to #2629). (#2608)
  • Integrated LLD (enable with -link-internally) now also able to (cross-)link ELF and Mach-O binaries, in addition to the existing Windows COFF support. (#2203)
  • Prebuilt Linux and macOS packages now ship with LTO default libs (druntime & Phobos). Keep on using -flto=<thin|full> to restrict LTO to your code, or opt for -flto=<thin|full> -defaultlib=phobos2-ldc-lto,druntime-ldc-lto to include the default libs. (#2640)
  • When linking against shared default libs, LDC now sets a default rpath (absolute path to the LDC lib dir(s); configurable in the etc/ldc2.conf file). (#2659)
  • New convenience mixin for fuzzing: ldc.libfuzzer.DefineTestOneInput. (#2510)

Platform support

  • Supports LLVM 3.7 - 6.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • DMD-style inline asm:
    • Fix semantics of extended ptr for MSVC targets. (#2653)
    • Add missing EIP register. (#2654)
  • macOS: Fix install_name and symlinks of shared fat druntime/Phobos libs. (#2659, #2615)
  • Make -static override -link-defaultlib-shared. (#2646)
  • Make interface thunks forward variadic args. (#2613)
  • Fix va_arg() for PowerPC. (ldc-developers/druntime#121)
  • MSVC: Support exporting naked functions. (#2648)
  • Only emit interface vtables in the declaring module. (#2647)
  • Call _Unwind_Resume() directly. (#2642)

LDC 1.8.0 (2018-03-04)

Big news

  • Frontend, druntime and Phobos are at version 2.078.3, incl. new switches -dip1008 and -transition=<intpromote|16997> as well as pragma(crt_{con,de}structor). (#2486)
  • New switch -link-defaultlib-shared to link against shared druntime/Phobos. It defaults to true for shared libraries (-shared), so it's primarily useful for executables. (#2443)
  • Support for plugins via -plugin=... (see this example). The mechanism is identical to Clang's LLVM-IR pass plugins and thus supports those as well, e.g., the AFLfuzz LLVM-mode plugin, Easy::Jit. (#2554)
  • Support for LLVM IR-based Profile-Guided Optimization via -fprofile-{generate,use} (not working on Windows yet). (#2474)
  • Basic support for LLVM XRay instrumentation via -fxray-{instrument,instruction-threshold}. (#2465)
  • DMD-style function trace profiling via -profile (LDMD) / -fdmd-trace-functions (LDC). (#2477)
  • New UDA ldc.attributes.assumeUsed to prevent a symbol from being optimized away. (#2457)
  • The PGO helper library ldc-profile-rt was replaced by LLVM's vanilla profiling library. Our subset of LLVM compiler-rt libraries is now also shipped on Windows (excl. fuzzer). (#2527, #2544)
  • Cherry-picked upstream Musl C runtime support for Docker images based on Alpine and added a native Alpine/x64 compiler, which requires the llvm5, musl-dev, and gcc packages to run and link D apps and the tzdata and libcurl packages for certain stdlib modules.

Platform support

  • Supports LLVM 3.7 - 5.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • Strict left-to-right evaluation/load order of function arguments. (#2450, #2502)
  • Inline asm silently ignores opcodes db, ds, di, dl, df, dd, de. (#2548)
  • Missed optimization for scope allocated classes. (#2515, #2516)
  • Don't eliminate frame pointer by default at -O0. (#2480, #2483)
  • LLVM complaining about invalid IR pointer arithmetics. (#2537)
  • llvm_expect() doesn't work with CTFE. (#2458, #2506)
  • .{so,dylib} file command line arguments should be forwarded to linker. (#2445, #2485)
  • macOS: Set shared stdlib install_name to @rpath/<filename>. (#2442, #2581)
  • array ~= element issue if rhs affects the lhs length. (#2588, #2589)
  • EH segfaults when checking D class catch handlers against thrown C++ exception. (#2590)

LDC 1.7.0 (2018-01-06)

Big news

  • Frontend, druntime and Phobos are at version 2.077.1. (#2401, #2430)
  • C++ exceptions can now be caught in D code, for Linux and MSVC targets (and possibly more). A logical step after consolidating LDC's exception handling for non-MSVC targets with DMD's DWARF implementation. (#2405)
  • Automated building of release and CI packages. (#2438)

Platform support

  • Supports LLVM 3.7 - 5.0. (binary packages on GitHub are built with LLVM 5.0.1)
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • ICE on chained ref-returning opIndex op-assign. (#2415)
  • Windows: export visibility ignored for globals. (#2437)
  • Print error message when trying to use shared libraries with static runtime. (#2454)
  • ldc-1.7.0-beta1 regression: ICE with implicit cast. (#2471)
  • CMake: use llvm-config to determine LLVM's cmake directory, if possible. (#2482)

LDC 1.6.0 (2017-11-26)

Big news

  • Frontend, druntime and Phobos are at version 2.076.1 (#2362), including -betterC semantics (#2365).
  • Experimental support for dynamic codegen at runtime (JIT-style) to tune performance-critical parts for the used CPU and/or treat special runtime variables as constants. See UDAs @dynamicCompile, @dynamicCompileConst in ldc.attributes; compile with command-line option -enable-dynamic-compile and use the ldc.dynamic_compile module to generate the code at runtime before invoking it. Congratulations to Ivan Butygin for implementing this non-trivial feature! (#2293)
  • Many std.math functions are now CTFE-able. (#2259)

Platform support

  • Supports LLVM 3.7 - 5.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Bug fixes

  • Can't link against wsock32 and ws2_32 on Windows. (#468)
  • PGO incompatible with MSVC EH. (#1943)
  • Regression: ModuleInfos not emitted as COMDATs. (#2409)
  • Incorrect C assert function signature for Android. (#2417)
  • Overzealous error check when attempting to evaluate object as constant. (#2422)

LDC 1.5.0 (2017-10-29)

Big news

  • Frontend, druntime and Phobos are at version 2.075.1. (#2252)
  • New command-line option -fp-contract to control fused floating-point math, as well as about 25 new hidden options influencing codegen, see -help-hidden (-enable-unsafe-fp-math, -debugger-tune etc.). (#2148)
  • New command-line option -linker. Use -linker=lld-link to use an external LLD executable for MSVC targets (with experimental LTO support) or -linker=<gold|bfd|lld> for other targets. (#2386)

Breaking changes

  • Win32: the mangled names of D symbols now start with _D, not with __D, compatible with DMD. (#2353)

Platform support

  • Supports LLVM 3.7 - 5.0.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017.

Changes to the prebuilt packages

  • LLVM upgraded to 5.0.0.

Bug fixes

  • Cyclic dependencies with -cov. (#2177)
  • ICE when capturing this in constructors. (#1728)
  • Objective-C bugs. (#2387, #2388)
  • LLVM/LLD 5.0: -link-internally broken. (LLD patch)
  • LLVM 5.0: need to build LDC with CMake option -DLDC_WITH_LLD=OFF to avoid conflicting command-line options. (#2148)
  • LLVM 5.0 & non-Windows targets: names of members in static libraries generated by LDC's internal archiver contain path information. (#2349)
  • Workaround for Xcode 9 ranlib bug: don't use internal (LLVM) archiver by default for OSX targets. (#2350) Xcode 9.0.1 fixes that bug, please upgrade.
  • Captured lazy parameters may be garbage. (#2302, #2330)
  • Packed struct layout regression (#2346) and T.alignof not respecting explicit type alignment via align(N). (#2347)
  • OSX and Win32: mangling issue for druntime's rt_options. (#1970, #2354)
  • MinGW Win64: ABI regression wrt. functions returning x87 reals. (#2358)
  • Potential file permission problem when copying over LLVM libraries during LDC build. (#2337)
  • PPC64: Forward reference error with 1.3 release. (#2200)

Known issues

  • LLVM 5.0: potentially failing LLVM assertion when emitting debuginfos and using inlining at the same time. (#2361)

LDC 1.4.0 (2017-09-11)

Big news

  • Frontend, druntime and Phobos are at version 2.074.1. (#2076)
  • ldc-build-runtime: a small D tool that makes it easy to compile the LDC runtime and standard library yourself, for example, to enable LTO-ability/sanitizers or cross-compiling executables and shared libraries for other platforms, like Android/ARM. (Wiki page)
  • @joakim-noah's Android fixes have finally been fully incorporated, enabling every host to (cross-)compile to Android. (https://github.com/ldc-developers/llvm/commit/8655f3208cce28bb7f903cadf5f58a3911392bdc) Instructions on using this ldc release to cross-compile D apps for Android are on the wiki, including how to try out the native Android/arm package, ie a D compiler that you can run on your Android smartphone or tablet.
  • Improved support for AddressSanitizer. LDC will automatically link with the AddressSanitizer runtime library when -fsanitize=address is passed (when LDC can find the AddressSanitizer library).
  • libFuzzer sanitizer support using -fsanitize=fuzzer (same as Clang). This flag implies -fsanitize-coverage=trace-pc-guard,indirect-calls,trace-cmp and automatically links-in the runtime libFuzzer library if LDC can locate the runtime library. (With LLVM 4.0, there is a dependency on sanitizer runtime, so manually link the ASan library or use -fsanitize=fuzzer,address.)
  • New -fsanitize-blacklist=<file> command-line option to exclude functions from sanitizer instrumentation (identical to Clang). The file must adhere to the textual Sanitizer Special Case List format.
  • New -fsanitize-coverage=... command-line option with the same functionality as Clang.
  • The config file sections now feature an additional post-switches list for switches to be appended to the command line (the existing switches list is prepended). E.g., this now allows the user to override the directory containing the runtime libraries via -L-L/my/runtime/libs in the command line. (#2281)

Breaking changes

  • The -sanitize command-line option has been renamed to -fsanitize*, for clang conformance.
  • The semantics of an empty -conf= command-line option have been changed from 'use default config file' to 'use no config file'.
  • The binary representations of the init values for float/double/real have been unified to a special quiet NaN, with both most significant mantissa bits set, on all hosts and for all targets. (#2207)

Platform support

  • Supports LLVM 3.7 - 5.0. Support for 3.5 and 3.6 has been dropped.
  • Windows: Supports Visual Studio/C++ Build Tools 2015 and 2017, incl. the latest Visual Studio 2017 Update 15.3.

Changes to the prebuilt packages

  • Consistent usage of a minimally tailored LLVM 4.0.1.
  • Newly enabled LLVM target NVPTX in order to target CUDA via DCompute.
  • Linux x86_64:
    • Shipping with the LLVM LTO plugin for the gold linker. On Ubuntu 14.04 and later, -flto=full|thin -Xcc=-fuse-ld=gold should work out of the box.
    • Build environment upgraded from Ubuntu 12.04 and gcc 4.9 to Ubuntu 14.04 and gcc 6.3.
  • Windows/MSVC: Build environment upgraded from Visual Studio 2015 Update 3 to Visual Studio 2017 15.3.3 (WinSDK 10.0.15063).

Bug fixes

  • Misc. debuginfo issues, incl. adaptations to internal LLVM 5.0 changes: (#2315)
    • ref parameters and closure parameters declared with wrong address and hence potentially showing garbage.
    • Win64: parameters > 64 bit passed by value showing garbage.
    • Win64: debuginfos for closure and nested variables now finally available starting with LLVM 5.0.
  • LLVM error Global variable initializer type does not match global variable type! for T.init with explicit initializers for dominated members in nested unions. (#2108)
  • Inconsistent handling of lvalue slicees wrt. visible side-effects of slice lower/upper bound expressions. (#1433)
  • Misc. dcompute issues. (#2195, #2215)
  • Potential LDC crashes due to dangling pointers after replacing IR globals (required in some cases if the type contains unions) almost fully mitigated. (#1829)
  • Multiple arrayop function emissions. (#2216)
  • Potentially incorrect memory layout for unnaturally aligned aggregates. (#2235)
  • Wrong -m32/64 in command-line for external ARM assembler used via -no-integrated-as.

Internals

  • Misc. CI improvements:
    • Addition of high-performant SemaphoreCI (incl. enabled LLVM/LDC assertions).
    • CircleCI upgraded to 2.0, testing with latest gcc.
  • Compile all D files for (non-unittest) druntime/Phobos at once. May be disabled via CMake option COMPILE_ALL_D_FILES_AT_ONCE=OFF. (#2231)

Known issues

  • ThinLTO may not work well with the ld.bfd linker, use ld.gold instead (-Xcc=-fuse-ld=gold).
  • When building with LLVM 5.0, you may need -DLDC_WITH_LLD=OFF in the CMake command line. Otherwise, if the LLD headers are available and LDC is built with LLD integration, the produced LDC binary will refuse to work due to conflicting command-line options.

LDC 1.3.0 (2017-07-07)

Big news

  • Frontend, druntime and Phobos are at version 2.073.2.
  • A first experimental version of DCompute for OpenCL/CUDA targets has landed. See announcement.
  • LLVM 3.9+: Experimental integration of LLD, the LLVM cross-linker, for MSVC targets. Check out these hassle-free instructions to make LDC emit Windows executables and DLLs on any host! (#2142)
  • libconfig was replaced by an ad-hoc parser (in D), getting rid of the build and runtime dependency and shrinking the license file by roughly 50%. Thanks again, Remi! (#2016)
  • LDC now ships with static and shared runtime libs on supported platforms. (#1960)
  • LLVM 3.9+: Static libraries are now generated by LDC (LLVM) by default, not by system ar or lib.exe. This means that LDC can cross-compile and -archive static libs for all supported targets. Command-line option -ar allows specifying an external archiver to be used. (#2030)
  • New command-line options -dip1000, -mv and -mscrtlib (#2041).
  • Ships with dlang tools rdmd, ddemangle and dustmite.

New features

  • LLVM 4.0+: Output LLVM optimization records via -fsave-optimization-record. (#2089)
  • New -Xcc command-line option for C compiler flags when linking via gcc/clang. Thanks Adrian! (#2104)
  • New function UDA @ldc.attributes.llvmFastMathFlag("contract") that specifically enables floating point operation fusing (fused multiply-add), previously only achievable with @fastmath. (#2060)

Platform support

  • Supports LLVM 3.5 - 4.0.
  • Additional LLVM targets have been enabled for the prebuilt x86_64 packages: ARM, AArch64 and PowerPC.
  • Windows: Supports Visual Studio/Build Tools 2015 and 2017. (#2065)
  • NetBSD: The 2.074 druntime patches have been cherry-picked.

Bug fixes

  • LTO flags leaking into standard libraries when building LDC with LTO. (#2077)
  • Debug info fixes for class types - thanks Elie! (#2130)
  • OSX: Incomplete backtrace. (#2097)
  • Phobos on ARM: alignment and 64-bit real issues. (#2024)
  • Windows: EH-related crashes when linking against shared MS runtimes. (#2080)
  • ICE when initializing vector with TVector.init. (#2101)
  • Weird object file type autodetection. (#2105)
  • Typesafe variadics emitted as LLVM variadics. (#2121)
  • Superfluous masking of bool values. (#2131)
  • Output for -mcpu=help or -mattr=help printed multiple times. (#2073)
  • LDMD refuses some duplicate command-line options. (#2110)
  • Change format of predefined versions output for DMD compatibility. (#1962)
  • Fix potential segfault when formatting error msg (#2160)
  • Fix ICE when using -main -cov (#2164)
  • Make inlining threshold customizable via (existing) -inline-threshold, fix performance decrease with -boundscheck=off (#2161, #2180)
  • Switch Android onto the sectionELF style of module registry (#2172)
  • Check fiber migration on Android/ARM too (ldc-developers/druntime#97)
  • Android moduleinfo section druntime fix (ldc-developers/druntime#98)

Building LDC

  • Building LDC requires a preinstalled D compiler.

Internals

  • LDC now features D unittests itself. Just add some to LDC's D modules and they'll be compiled and executed by CI. (#2016)

LDC 1.2.0 (2017-04-21)

Big news

  • Frontend, druntime and Phobos are at version 2.072.2.

New features

Platform support

  • Supports LLVM 3.5 - 4.0.
  • Exception backtrace robustness has been significantly improved.
  • Emission of reals with differing precision to the host platform's real has been fixed.
    (The compiler still uses the host platform's D real type to represent compile-time floating-point values, so parsing of literals and CTFE is restricted to the host real precision. For instance, LDC on AArch64 with its quad-precision reals would now make for a universal cross-compiler. On the other hand, cross-compiling from ARM to x86 with 80 bit reals still does not work – for example, real.max would silently overflow at compile-time and be emitted as 80-bit infinity.)

Bug fixes

  • Compilation error with DMD 2.074 host compiler.
  • LLVM error when accessing typeid(null) (#2062).
  • Some LLVM intrinsics not available for LLVM ≥ 4.0 (#2037).
  • Spurious crashes on OS X user program shutdown when linking against static druntime lib.
  • Lexing floating-point literals may fail on PowerPC (#2046).
  • LDC crashes when trying to repaint static arrays (#2033).
  • No stack trace on Linux (#2004) and Windows (#1976, ldc-developers/druntime#85).
  • Generated documentation file is immediately deleted when compiling at the same time.
  • LDMD doesn't append default file extension if -of option doesn't contain any (#2001, #2002).

Building LDC

  • Building LDC requires a preinstalled D compiler.

LDC 1.1.1 (2017-02-23)

Bug fixes

  • Linux: Always build C parts of standard library as PIC (#2009). This makes the binary packages usable on Ubuntu 16.10 (where executables are linked as position-independent code by default, in contrast to the older system used for preparing the packages).

LDC 1.1.0 (2017-01-26)

Big news

  • Frontend, druntime and Phobos are at version 2.071.2.
  • Link-Time Optimization (LTO) with -flto={thin|full} (LLVM ≥ 3.9). LTO requires linker support and is therefore currently only supported on Linux (ld.gold with LLVM plugin) and OS X. For more details, please refer to LLVM's and Clang's documentation, for example Clang's ThinLTO documentation. (#1840)
  • Experimental cross-module inlining (#1577, enable with -enable-cross-module-inlining)
  • Profile-guided optimization (PGO) (#1219)
  • Windows: enable C-style DLL exports/imports via export (functions only) (#1856)
  • Experimental IR-to-obj caching with -cache=<cache dir> (#1572, #1753, #1812, #1893)
  • Accept bitcode files on commandline (#1539)
  • @ldc.attributes.fastmath for aggressive math optimization (#1472, #1438)
  • Binary distribution now bundles DUB (v1.2.0) (#1573)
  • Breaking changes to command-line semantics (see http://forum.dlang.org/post/ubobkfmsspbsmjunosna@forum.dlang.org).

New features

  • New traits __traits(targetCPU) and __traits(targetHasFeature, ) (#1434)
  • Drastic reduction of large symbol name lengths with optional -hash-threshold (#1445)
  • @ldc.attributes.optStrategy(...) for per-function optimization setting (#1637)
  • Extend intrinsic llvm_memory_fence for single-thread fences (#1837)
  • Add function instrumentation and profiling options via -finstrument-functions (#1845)
  • Add line-tables-only debuginfo via -gline-tables-only (#1861)
  • Implement DMD-compatible -betterC (#1872)

Platform support

Bug fixes

  • Potential crash when generating debuginfos for nested variables AND optimizing (#1933, #1963, #1984)
  • Alignment and size of critical sections, causing crashes on ARM (#1955, #1956)
  • -finstrument-functions using wrong return address (#1961)
  • Response files expanded too late, preventing cross-compilation on Windows when using dub (#1941, #1942)
  • Non-Windows x86_64 ABI bug wrt. returning static arrays (#1925, #1938)
  • Some array literals wrongly promoted to constants (#1924, #1927)
  • Misc. DUB regressions introduced by beta 3 (#1819)
    • Don't output static libs (with relative target filename) in -od objects directory (for LDC, but continue to do so for LDMD, for DMD compatibility).
    • LDMD: avoid object file collisions (due to multiple D source files with identical name in different dirs) when creating a static lib and remove the object files on success, mimicking DMD.
    • Create output directories recursively.
  • Potential ICE when building vibe.d projects (#1741)
  • ICE when calling an abstract function. (#1822)
  • ICE for invalid __asm constraints. (#802)
  • Wrong code for LLVM inline assembly returning a tuple (__asmtuple). (#1823)
  • Potential ICE wrt. captured variables. (#1864)
  • ARM: ICE when using LTO. (#1860)
  • Union layout and initialization, fixing the compilation of DMD (#1846, fixing most cases of #1829)
  • Allow custom file extension for .ll/.bc./.s output files. (#1843)
  • Windows: produced binaries with debuginfos are now large-address-aware too. (#442, #1876)
  • Fix debuginfos for parameters. (#1816)
  • Allow alignment of global variables < pointer size. (#1825)
  • Promote more immutable array literals to LLVM constants. (#506, #1821, #1838)
  • ICE when incrementing a complex variable. (#1806)
  • llvm.va_start not matched with llvm.va_end (#1744)
  • ldmd2 ignores -od option for libraries. (#1724)
  • ICE: toConstElem(CastExp) doesn't support NewExp as cast source. (#1723)
  • Mark runtime intrinsic shims as pragma(inline, true). (#1715)
  • pragma(inline, false) is incompatible with store/loadUnaligned. (#1711)
  • ICE: function not fully analyzed; previous unreported errors compiling std.variant.VariantN!(16LU, int, string).VariantN.__xopEquals? (#1698)
  • Segfault at at ldc/ldc-1.1.0/driver/main.cpp:1351. (#1696)
  • Make sure MSVC Build Tools are automatically detected by LDC. (#1690)
  • Update Windows README.txt. (#1689)
  • [ldc2-1.1.0-beta2] Missing symbol with inlining enabled. (#1678)
  • [REG ldc-1.1.0-beta2] ICE with templated classes. (#1677)
  • FreeBSD: Fix shared library build, working Hello World. (#1673)
  • Strange compile time error. (#1638)
  • LDC+DUB on Windows: folder separator is ignored. (#1621)
  • Fix evaluation order issues. (#1620, #1623)
  • Ubuntu 16.10 linker failures due to PIE by default (relocation R_X86_64_32S … can not be used). (#1618)
  • ICE on returning struct with zero-length static array. (#1611)
  • Debug info generation fixes for LLVM >= 3.8. (#1598)
  • ICE after return in the middle of a function on Win64/MSVC. (#1582)
  • Enums with referenced struct members result in floating point error. (#1581)
  • pragma(inline, {true|false}) is no longer ignored (#1577)
  • Static array initialization with single element misdetected as direct construction via sret. (#1548)
  • ICE on static typeid. (#1540)
  • super doesn't work. (#1450)
  • Sub-expression evaluation order fixes. (#1327)
  • Add suffix to LTO linker plugin name to disambiguate with LLVM installation. (#1898)

Building LDC

  • LDC now requires a preinstalled D compiler. (Versions 0.17.* and the ltsmaster branch can be used to 'bootstrap' a build when only a C++ compiler is available.)
  • On Unix-like systems we now use gcc for linking. (#1594)

Internals

  • optimizer: Skip adding verifier function pass if -disable-verify is given. (#1591)
  • DValue refactoring. (#1562)
  • Several improvements to generated IR. (#1528, #1630)
  • The vtable's of inherited interfaces are now put between the class's _monitor field and the user data fields. (https://issues.dlang.org/show_bug.cgi?id=15644)

LDC 1.0.0 (2016-06-03)

Big news

  • Frontend, druntime and Phobos are at version 2.070.2.

Platform support

  • Support for LLVM 3.5 - 3.8 and preliminary support for LLVM 3.9.
  • Objective-C Support. (#1419)
  • ARM platform is now fully supported. (#1283, #489)
  • Better support for Android. (#1447)
  • Preliminary support for AArch64.

Bug fixes

  • Outdated Copyright notice in LICENSE file. (#1322)
  • libconfig.so.8 not found (ubuntu 14.04) (#1460)
  • Wrong template filter on atomicOp. (#1454)
  • Runtime error on synchronized(typeid(SomeInterface)) { }. (#1377)
  • TypeInfo is stored read-only, but mutable from D. (#1337)
  • Inline assembly regression with local variable references. (#1292)
  • Compile error on Linux/PPC and Linux/PPC64 due to missing import in Phobos.

Building LDC

  • LDC now requires a preinstalled D compiler.
  • Building on OS X requires ld64-264 or above (shipping with Xcode 7.3). This avoid spurious crashes during exception handling. XCode 7.3.1 should be used to avoid linker errors. (#1444, #1512)

Internals

  • Linking against LLVM shared library is now supported.

LDC 0.17.6 (2018-08-24)

News

LDC 0.17.5 (2017-09-12)

News

  • Added LLVM 5.0 support.
  • druntime: fixes for Android and addition of core.math.yl2x[p1]() for x86(_64) targets.
  • dmd-testsuite: backported runnable/cppa.d fix for GCC > 5.
  • CI updates.

LDC 0.17.4 (2017-03-23)

News

  • Added LLVM 4.0 support.

LDC 0.17.3 (2017-02-01)

Big news

  • Full stdlib and dmd testsuite passes on Android/ARM.

Bug fixes

  • Fixes for PPC64-LE, MIPS64 and ARM/AArch64 ABIs (#1905)

LDC 0.17.2 (2016-10-09)

Platform support

  • Support for LLVM 3.5 - 3.9.

Bug fixes

  • Fixed soft float and hard float issues on ARM.
  • Fixed ABI error on Linux/PPC and Linux/PPC64.
  • Fixed error in core.stdc.stdarg on Linux/PPC and Linux/PPC64.
  • Fixed issue with __tls_get_addr on Linux/PPC and Linux/PPC64.

LDC 0.17.1 (2016-03-22)

Big news

  • ARM platform is now a first class target for LDC. It passes most test cases (except 2 failures) and can successfully compile the D version of the compiler.

Platform support

  • ARM platform is now fully supported. (#1283, #489)
  • Preliminary support for AArch64.
  • Preliminary support for LLVM 3.9.

Bug fixes

  • Inline assembly regression with local variable references. (#1292)
  • Compile error on Linux/PPC and Linux/PPC64 due to missing import in Phobos.

Building LDC

  • Linking against LLVM shared library is now supported.

LDC 0.17.0 (2016-02-13)

Big news:

  • Frontend, druntime and Phobos are at version 2.068.2.
  • The exception handling runtime now no longer allocates GC memory (although it still uses C malloc if there are more than 8 concurrent exceptions or nested finally blocks per thread). Note: Creating the Throwables in user code (e.g. new Exception("…")) and the Runtime.traceHandler may GC-allocate still. (Thanks for this goes to our newest contributor, @Philpax).
  • The @ldc.attributes.section("…") attribute can now be used to explicitly specify the object file section a variable or function is emitted to.
  • The @ldc.attributes.target("…") attribute can now be used to explicitly specify CPU features or architecture for a function.
  • The -static option can be used to create fully static binaries on Linux (akin to the GCC option of the same name).
  • core.atomic.atomicOp() now exploits LLVM read-modify-write intrinsics instead of using a compare-and-swap loop. As side-effect, the atomic intrinsics in module ldc.intrinsics have been renamed:
    • llvm_atomic_cmp_swap => llvm_atomic_cmp_xchg
    • llvm_atomic_swap => llvm_atomic_rmw_xchg
    • llvm_atomic_load_* => llvm_atomic_rmw_*

Platform support:

  • Improved ARM support. (#1280)
  • The compiler now supports NetBSD. (#1247) (Thanks for this goes to @nrTQgc.)
  • The float ABI can now be derived from the second field of the triple. E.g. the hardfloat ABI is used if triple armv7a-hardfloat-linux-gnueabi is given. (#1253)
  • Support for fibers on AArch64.
  • Support for LLVM 3.8 and preliminary support for LLVM 3.9

Bug fixes:

  • make install problem. (#1289)
  • When a class contains a union, other fields are not statically initialized. (#1286)
  • Compiling DCD with -singleobj causes segmentation fault. (#1275)
  • 0.17.0-beta2: Cannot build DCD. (#1266)
  • Invalid bitcast error. (#1211)
  • 0.16.0-beta1: Trivial program fails on FreeBSD. (#1119)
  • Can't build gtk-d 3.1.4. (#1112)
  • x86 ABI: Fix Solaris regression and work around MSVC byval alignment issue. (#1230)
  • Atomic RMW operations emit subpar x86 assembly. (#1195)
  • align() not respected for local variable declarations. (#1154)
  • Codegen optimizations are no longer disabled when -g is given. (75b3270a)
  • Debug information is now generated for ref and out parameters. (#1177)
  • core.internal.convert tests do not depend on real padding bytes any longer. (#788)

Building LDC:

  • LDC now requires LLVM 3.5–3.8 and thus also a C++11-capable compiler to build.

Internals:

  • The LDC-specific parts of the source code have received a big overhaul to make use of some C++11 features and to unify the style (the LLVM style as per clang-format is now used).
  • The groundwork for a code generation test suite working on the LLVM IR level has been laid, together with some first test cases for alignment issues.
  • LDC now emits more optional LLVM IR attributes for more optimization opportunities. (#1232)

Known issues:

  • LDC does not zero the padding area of a real variable. This may lead to wrong results if the padding area is also considered. See #770. Does not apply to real members inside structs etc.
  • Phobos does not compile on MinGW platform.