-This is a list of changes between the released versions of LuaJIT.
-The current stable version is LuaJIT 2.0.3.
-
-Please check the -» Online Change History -to see whether newer versions are available. -
- -
-
-
-LuaJIT 2.0.3 — 2014-03-12
--
-
- Add PS4 port. -
- Add support for multilib distro builds. -
- Fix OSX build. -
- Fix MinGW build. -
- Fix Xbox 360 build. -
- Improve ULOAD forwarding for open upvalues. -
- Fix GC steps threshold handling when called by JIT-compiled code. -
- Fix argument checks for math.deg() and math.rad(). -
- Fix jit.flush(func|true). -
- Respect jit.off(func) when returning to a function, too. -
- Fix compilation of string.byte(s, nil, n). -
- Fix line number for relocated bytecode after closure fixup -
- Fix frame traversal for backtraces. -
- Fix ABC elimination. -
- Fix handling of redundant PHIs. -
- Fix snapshot restore for exit to function header. -
- Fix type punning alias analysis for constified pointers -
- Fix call unroll checks in the presence of metamethod frames. -
- Fix initial maxslot for down-recursive traces. -
- Prevent BASE register coalescing if parent uses IR_RETF. -
- Don't purge modified function from stack slots in BC_RET. -
- Fix recording of BC_VARG. -
- Don't access dangling reference to reallocated IR. -
- Fix frame depth display for bytecode dump in -jdump. -
- ARM: Fix register allocation when rematerializing FPRs. -
- x64: Fix store to upvalue for lightuserdata values. -
- FFI: Add missing GC steps for callback argument conversions. -
- FFI: Properly unload loaded DLLs. -
- FFI: Fix argument checks for ffi.string(). -
- FFI/x64: Fix passing of vector arguments to calls. -
- FFI: Rehash finalizer table after GC cycle, if needed. -
- FFI: Fix cts->L for cdata unsinking in snapshot restore. -
LuaJIT 2.0.2 — 2013-06-03
--
-
- Fix memory access check for fast string interning. -
- Fix MSVC intrinsics for older versions. -
- Add missing GC steps for io.* functions. -
- Fix spurious red zone overflows in machine code generation. -
- Fix jump-range constrained mcode allocation. -
- Inhibit DSE for implicit loads via calls. -
- Fix builtin string to number conversion for overflow digits. -
- Fix optional argument handling while recording builtins. -
- Fix optional argument handling in table.concat(). -
- Add partial support for building with MingW64 GCC 4.8-SEH. -
- Add missing PHI barrier to string.sub(str, a, b) == kstr FOLD rule. -
- Fix compatibility issues with Illumos. -
- ARM: Fix cache flush/sync for exit stubs of JIT-compiled code. -
- MIPS: Fix cache flush/sync for JIT-compiled code jump area. -
- PPC: Add plt suffix for external calls from assembler code. -
- FFI: Fix snapshot substitution in SPLIT pass. -
- FFI/x86: Fix register allocation for 64 bit comparisons. -
- FFI: Fix tailcall in lowest frame to C function with bool result. -
- FFI: Ignore long type specifier in ffi.istype(). -
- FFI: Fix calling conventions for 32 bit OSX and iOS simulator (struct returns). -
- FFI: Fix calling conventions for ARM hard-float EABI (nested structs). -
- FFI: Improve error messages for arithmetic and comparison operators. -
- FFI: Insert no-op type conversion for pointer to integer cast. -
- FFI: Fix unroll limit for ffi.fill(). -
- FFI: Must sink XBAR together with XSTOREs. -
- FFI: Preserve intermediate string for const char * conversion. -
LuaJIT 2.0.1 — 2013-02-19
--
-
- Don't clear frame for out-of-memory error. -
- Leave hook when resume catches error thrown from hook. -
- Add missing GC steps for template table creation. -
- Fix discharge order of comparisons in Lua parser. -
- Improve buffer handling for io.read(). -
- OSX: Add support for Mach-O object files to -b option. -
- Fix PS3 port. -
- Fix/enable Xbox 360 port. -
- x86/x64: Always mark ref for shift count as non-weak. -
- x64: Don't fuse implicitly 32-to-64 extended operands. -
- ARM: Fix armhf call argument handling. -
- ARM: Fix code generation for integer math.min/math.max. -
- PPC/e500: Fix lj_vm_floor() for Inf/NaN. -
- FFI: Change priority of table initializer variants for structs. -
- FFI: Fix code generation for bool call result check on x86/x64. -
- FFI: Load FFI library on-demand for bytecode with cdata literals. -
- FFI: Fix handling of qualified transparent structs/unions. -
LuaJIT 2.0.0 — 2012-11-08
--
-
- Correctness and completeness:
-
-
-
- Fix Android/x86 build. -
- Fix recording of equality comparisons with __eq metamethods. -
- Fix detection of immutable upvalues. -
- Replace error with PANIC for callbacks from JIT-compiled code. -
- Fix builtin string to number conversion for INT_MIN. -
- Don't create unneeded array part for template tables. -
- Fix CONV.num.int sinking. -
- Don't propagate implicitly widened number to index metamethods. -
- ARM: Fix ordered comparisons of number vs. non-number. -
- FFI: Fix code generation for replay of sunk float fields. -
- FFI: Fix signedness of bool. -
- FFI: Fix recording of bool call result check on x86/x64. -
- FFI: Fix stack-adjustment for __thiscall callbacks. -
-
LuaJIT 2.0.0-beta11 — 2012-10-16
--
-
- New features:
-
-
-
- Use ARM VFP instructions, if available (build-time detection). -
- Add support for ARM hard-float EABI (armhf). -
- Add PS3 port. -
- Add many features from Lua 5.2, e.g. goto/labels. - Refer to this list. -
- FFI: Add parameterized C types. -
- FFI: Add support for copy constructors. -
- FFI: Equality comparisons never raise an error (treat as unequal instead). -
- FFI: Box all accessed or returned enums. -
- FFI: Check for __new metamethod when calling a constructor. -
- FFI: Handle __pairs/__ipairs metamethods for cdata objects. -
- FFI: Convert io.* file handle to FILE * pointer (but as a void *). -
- FFI: Detect and support type punning through unions. -
- FFI: Improve various error messages. -
- - Build-system reorganization:
-
-
-
- Reorganize directory layout:
- lib/* → src/jit/*
- src/buildvm_*.dasc → src/vm_*.dasc
- src/buildvm_*.h → removed
- src/buildvm* → src/host/*
- - Add minified Lua interpreter plus Lua BitOp (minilua) to run DynASM. -
- Change DynASM bit operations to use Lua BitOp -
- Translate only vm_*.dasc for detected target architecture. -
- Improve target detection for msvcbuild.bat. -
- Fix build issues on Cygwin and MinGW with optional MSys. -
- Handle cross-compiles with FPU/no-FPU or hard-fp/soft-fp ABI mismatch. -
- Remove some library functions for no-JIT/no-FFI builds. -
- Add uninstall target to top-level Makefile. -
- - Reorganize directory layout:
- Correctness and completeness:
-
-
-
- Preserve snapshot #0 PC for all traces. -
- Fix argument checks for coroutine.create(). -
- Command line prints version and JIT status to stdout, not stderr. -
- Fix userdata __gc separations at Lua state close. -
- Fix TDUP to HLOAD forwarding for LJ_DUALNUM builds. -
- Fix buffer check in bytecode writer. -
- Make os.date() thread-safe. -
- Add missing declarations for MSVC intrinsics. -
- Fix dispatch table modifications for return hooks. -
- Workaround for MSVC conversion bug (double → uint32_t → int32_t). -
- Fix FOLD rule (i-j)-i => 0-j. -
- Never use DWARF unwinder on Windows. -
- Fix shrinking of direct mapped blocks in builtin allocator. -
- Limit recursion depth in string.match() et al. -
- Fix late despecialization of ITERN after loop has been entered. -
- Fix 'f' and 'L' options for debug.getinfo() and lua_getinfo(). -
- Fix package.searchpath(). -
- OSX: Change dylib names to be consistent with other platforms. -
- Android: Workaround for broken sprintf("%g", -0.0). -
- x86: Remove support for ancient CPUs without CMOV (before Pentium Pro). -
- x86: Fix register allocation for calls returning register pair. -
- x86/x64: Fix fusion of unsigned byte comparisons with swapped operands. -
- ARM: Fix tonumber() argument check. -
- ARM: Fix modulo operator and math.floor()/math.ceil() for inf/nan. -
- ARM: Invoke SPLIT pass for leftover IR_TOBIT. -
- ARM: Fix BASE register coalescing. -
- PPC: Fix interpreter state setup in callbacks. -
- PPC: Fix string.sub() range check. -
- MIPS: Support generation of MIPS/MIPSEL bytecode object files. -
- MIPS: Fix calls to floor()/ceil()/trunc(). -
- ARM/PPC: Detect more target architecture variants. -
- ARM/PPC/e500/MIPS: Fix tailcalls from fast functions, esp. tostring(). -
- ARM/PPC/MIPS: Fix rematerialization of FP constants. -
- FFI: Don't call FreeLibrary() on our own EXE/DLL. -
- FFI: Resolve metamethods for constructors, too. -
- FFI: Properly disable callbacks on iOS (would require executable memory). -
- FFI: Fix cdecl string parsing during recording. -
- FFI: Show address pointed to for tostring(ref), too. -
- FFI: Fix alignment of C call argument/return structure. -
- FFI: Initialize all fields of standard types. -
- FFI: Fix callback handling when new C types are declared in callback. -
- FFI: Fix recording of constructors for pointers. -
- FFI: Always resolve metamethods for pointers to structs. -
- FFI: Correctly propagate alignment when interning nested types. -
- - Structural and performance enhancements:
-
-
-
- Add allocation sinking and store sinking optimization. -
- Constify immutable upvalues. -
- Add builtin string to integer or FP number conversion. Improves cross-platform consistency and correctness. -
- Create string hash slots in template tables for non-const values, too. Avoids later table resizes. -
- Eliminate HREFK guard for template table references. -
- Add various new FOLD rules. -
- Don't use stack unwinding for lua_yield() (slow on x64). -
- ARM, PPC, MIPS: Improve XLOAD operand fusion and register hinting. -
- PPC, MIPS: Compile math.sqrt() to sqrt instruction, if available. -
- FFI: Fold KPTR + constant offset in SPLIT pass. -
- FFI: Optimize/inline ffi.copy() and ffi.fill(). -
- FFI: Compile and optimize array/struct copies. -
- FFI: Compile ffi.typeof(cdata|ctype), ffi.sizeof(), ffi.alignof(), ffi.offsetof() and ffi.gc(). -
-
LuaJIT 2.0.0-beta10 — 2012-05-09
--
-
- New features:
-
-
-
- The MIPS of LuaJIT is complete. It requires a CPU conforming to the -MIPS32 R1 architecture with hardware FPU. O32 hard-fp ABI, -little-endian or big-endian. -
- Auto-detect target arch via cross-compiler. No need for -TARGET=arch anymore. -
- Make DynASM compatible with Lua 5.2. -
- From Lua 5.2: Try __tostring metamethod on non-string error -messages.. -
- - Correctness and completeness:
-
-
-
- Fix parsing of hex literals with exponents. -
- Fix bytecode dump for certain number constants. -
- Fix argument type in error message for relative arguments. -
- Fix argument error handling on Lua stacks without a frame. -
- Add missing mcode limit check in assembler backend. -
- Fix compilation on OpenBSD. -
- Avoid recursive GC steps after GC-triggered trace exit. -
- Replace <unwind.h> definitions with our own. -
- Fix OSX build issues. Bump minimum required OSX version to 10.4. -
- Fix discharge order of comparisons in Lua parser. -
- Ensure running __gc of userdata created in __gc -at state close. -
- Limit number of userdata __gc separations at state close. -
- Fix bytecode JMP slot range when optimizing -and/or with constant LHS. -
- Fix DSE of USTORE. -
- Make lua_concat() work from C hook with partial frame. -
- Add required PHIs for implicit conversions, e.g. via XREF -forwarding. -
- Add more comparison variants to Valgrind suppressions file. -
- Disable loading bytecode with an extra header (BOM or #!). -
- Fix PHI stack slot syncing. -
- ARM: Reorder type/value tests to silence Valgrind. -
- ARM: Fix register allocation for ldrd-optimized -HREFK. -
- ARM: Fix conditional branch fixup for OBAR. -
- ARM: Invoke SPLIT pass for double args in FFI call. -
- ARM: Handle all CALL* ops with double results in -SPLIT pass. -
- ARM: Fix rejoin of POW in SPLIT pass. -
- ARM: Fix compilation of math.sinh, math.cosh, -math.tanh. -
- ARM, PPC: Avoid pointless arg clearing in BC_IFUNCF. -
- PPC: Fix resume after yield from hook. -
- PPC: Fix argument checking for rawget(). -
- PPC: Fix fusion of floating-point XLOAD/XSTORE. -
- PPC: Fix HREFK code generation for huge tables. -
- PPC: Use builtin D-Cache/I-Cache sync code. -
- - FFI library:
-
-
-
- Ignore empty statements in ffi.cdef(). -
- Ignore number parsing errors while skipping definitions. -
- Don't touch frame in callbacks with tailcalls to fast functions. -
- Fix library unloading on POSIX systems. -
- Finalize cdata before userdata when closing the state. -
- Change ffi.load() library name resolution for Cygwin. -
- Fix resolving of function name redirects on Windows/x86. -
- Fix symbol resolving error messages on Windows. -
- Fix blacklisting of C functions calling callbacks. -
- Fix result type of pointer difference. -
- Use correct PC in FFI metamethod error message. -
- Allow 'typedef _Bool int BOOL;' for the Windows API. -
- Don't record test for bool result of call, if ignored. -
-
LuaJIT 2.0.0-beta9 — 2011-12-14
--
-
- New features:
-
-
-
- PPC port of LuaJIT is complete. Default is the dual-number port -(usually faster). Single-number port selectable via src/Makefile -at build time. -
- Add FFI callback support. -
- Extend -b to generate .c, .h or .obj/.o -files with embedded bytecode. -
- Allow loading embedded bytecode with require(). -
- From Lua 5.2: Change to '\z' escape. Reject undefined escape -sequences. -
- - Correctness and completeness:
-
-
-
- Fix OSX 10.7 build. Fix install_name and versioning on OSX. -
- Fix iOS build. -
- Install dis_arm.lua, too. -
- Mark installed shared library as executable. -
- Add debug option to msvcbuild.bat and improve error handling. -
- Fix data-flow analysis for iterators. -
- Fix forced unwinding triggered by external unwinder. -
- Record missing for loop slot loads (return to lower frame). -
- Always use ANSI variants of Windows system functions. -
- Fix GC barrier for multi-result table constructor (TSETM). -
- Fix/add various FOLD rules. -
- Add potential PHI for number conversions due to type instability. -
- Do not eliminate PHIs only referenced from other PHIs. -
- Correctly anchor implicit number to string conversions in Lua/C API. -
- Fix various stack limit checks. -
- x64: Use thread-safe exceptions for external unwinding (GCC platforms). -
- x64: Fix result type of cdata index conversions. -
- x64: Fix math.random() and bit.bswap() code generation. -
- x64: Fix lightuserdata comparisons. -
- x64: Always extend stack-passed arguments to pointer size. -
- ARM: Many fixes to code generation backend. -
- PPC/e500: Fix dispatch for binop metamethods. -
- PPC/e500: Save/restore condition registers when entering/leaving the VM. -
- PPC/e500: Fix write barrier in stores of strings to upvalues. -
- - FFI library:
-
-
-
- Fix C comment parsing. -
- Fix snapshot optimization for cdata comparisons. -
- Fix recording of const/enum lookups in namespaces. -
- Fix call argument and return handling for I8/U8/I16/U16 types. -
- Fix unfused loads of float fields. -
- Fix ffi.string() recording. -
- Save GetLastError() around ffi.load() and symbol -resolving, too. -
- Improve ld script detection in ffi.load(). -
- Record loads/stores to external variables in namespaces. -
- Compile calls to stdcall, fastcall and vararg functions. -
- Treat function ctypes like pointers in comparisons. -
- Resolve __call metamethod for pointers, too. -
- Record C function calls with bool return values. -
- Record ffi.errno(). -
- x86: Fix number to uint32_t conversion rounding. -
- x86: Fix 64 bit arithmetic in assembler backend. -
- x64: Fix struct-by-value calling conventions. -
- ARM: Ensure invocation of SPLIT pass for float conversions. -
- - Structural and performance enhancements:
-
-
-
- Display trace types with -jv and -jdump. -
- Record isolated calls. But prefer recording loops over calls. -
- Specialize to prototype for non-monomorphic functions. Solves the -trace-explosion problem for closure-heavy programming styles. -
- Always generate a portable vmdef.lua. Easier for distros. -
-
LuaJIT 2.0.0-beta8 — 2011-06-23
--
-
- New features:
-
-
-
- Soft-float ARM port of LuaJIT is complete. -
- Add support for bytecode loading/saving and -b command line -option. -
- From Lua 5.2: __len metamethod for tables -(disabled by default). -
- - Correctness and completeness:
-
-
-
- ARM: Misc. fixes for interpreter. -
- x86/x64: Fix bit.* argument checking in interpreter. -
- Catch early out-of-memory in memory allocator initialization. -
- Fix data-flow analysis for paths leading to an upvalue close. -
- Fix check for missing arguments in string.format(). -
- Fix Solaris/x86 build (note: not a supported target). -
- Fix recording of loops with instable directions in side traces. -
- x86/x64: Fix fusion of comparisons with u8/u16 -XLOAD. -
- x86/x64: Fix register allocation for variable shifts. -
- - FFI library:
-
-
-
- Add ffi.errno(). Save errno/GetLastError() -around allocations etc. -
- Fix __gc for VLA/VLS cdata objects. -
- Fix recording of casts from 32 bit cdata pointers to integers. -
- tonumber(cdata) returns nil for non-numbers. -
- Show address pointed to for tostring(pointer). -
- Print NULL pointers as "cdata<... *>: NULL". -
- Support __tostring metamethod for pointers to structs, too. -
- - Structural and performance enhancements:
-
-
-
- More tuning for loop unrolling heuristics. -
- Flatten and compress in-memory debug info (saves ~70%). -
-
LuaJIT 2.0.0-beta7 — 2011-05-05
--
-
- New features:
-
-
-
- ARM port of the LuaJIT interpreter is complete. -
- FFI library: Add ffi.gc(), ffi.metatype(), -ffi.istype(). -
- FFI library: Resolve ld script redirection in ffi.load(). -
- From Lua 5.2: package.searchpath(), fp:read("*L"), -load(string). -
- From Lua 5.2, disabled by default: empty statement, -table.unpack(), modified coroutine.running(). -
- - Correctness and completeness:
-
-
-
- FFI library: numerous fixes. -
- Fix type mismatches in store-to-load forwarding. -
- Fix error handling within metamethods. -
- Fix table.maxn(). -
- Improve accuracy of x^-k on x64. -
- Fix code generation for Intel Atom in x64 mode. -
- Fix narrowing of POW. -
- Fix recording of retried fast functions. -
- Fix code generation for bit.bnot() and multiplies. -
- Fix error location within cpcall frames. -
- Add workaround for old libgcc unwind bug. -
- Fix lua_yield() and getmetatable(lightuserdata) on x64. -
- Misc. fixes for PPC/e500 interpreter. -
- Fix stack slot updates for down-recursion. -
- - Structural and performance enhancements:
-
-
-
- Add dual-number mode (int/double) for the VM. Enabled for ARM. -
- Improve narrowing of arithmetic operators and for loops. -
- Tune loop unrolling heuristics and increase trace recorder limits. -
- Eliminate dead slots in snapshots using bytecode data-flow analysis. -
- Avoid phantom stores to proxy tables. -
- Optimize lookups in empty proxy tables. -
- Improve bytecode optimization of and/or operators. -
-
LuaJIT 2.0.0-beta6 — 2011-02-11
--
-
- New features:
-
-
-
- PowerPC/e500v2 port of the LuaJIT interpreter is complete. -
- Various minor features from Lua 5.2: Hex escapes in literals, -'\*' escape, reversible string.format("%q",s), -"%g" pattern, table.sort checks callbacks, -os.exit(status|true|false[,close]). -
- Lua 5.2 __pairs and __ipairs metamethods -(disabled by default). -
- Initial release of the FFI library. -
- - Correctness and completeness:
-
-
-
- Fix string.format() for non-finite numbers. -
- Fix memory leak when compiled to use the built-in allocator. -
- x86/x64: Fix unnecessary resize in TSETM bytecode. -
- Fix various GC issues with traces and jit.flush(). -
- x64: Fix fusion of indexes for array references. -
- x86/x64: Fix stack overflow handling for coroutine results. -
- Enable low-2GB memory allocation on FreeBSD/x64. -
- Fix collectgarbage("count") result if more than 2GB is in use. -
- Fix parsing of hex floats. -
- x86/x64: Fix loop branch inversion with trailing -HREF+NE/EQ. -
- Add jit.os string. -
- coroutine.create() permits running C functions, too. -
- Fix OSX build to work with newer ld64 versions. -
- Fix bytecode optimization of and/or operators. -
- - Structural and performance enhancements:
-
-
-
- Emit specialized bytecode for pairs()/next(). -
- Improve bytecode coalescing of nil constants. -
- Compile calls to vararg functions. -
- Compile select(). -
- Improve alias analysis, esp. for loads from allocations. -
- Tuning of various compiler heuristics. -
- Refactor and extend IR conversion instructions. -
- x86/x64: Various backend enhancements related to the FFI. -
- Add SPLIT pass to split 64 bit IR instructions for 32 bit CPUs. -
-
LuaJIT 2.0.0-beta5 — 2010-08-24
--
-
- Correctness and completeness:
-
-
-
- Fix trace exit dispatch to function headers. -
- Fix Windows and OSX builds with LUAJIT_DISABLE_JIT. -
- Reorganize and fix placement of generated machine code on x64. -
- Fix TNEW in x64 interpreter. -
- Do not eliminate PHIs for values only referenced from side exits. -
- OS-independent canonicalization of strings for non-finite numbers. -
- Fix string.char() range check on x64. -
- Fix tostring() resolving within print(). -
- Fix error handling for next(). -
- Fix passing of constant arguments to external calls on x64. -
- Fix interpreter argument check for two-argument SSE math functions. -
- Fix C frame chain corruption caused by lua_cpcall(). -
- Fix return from pcall() within active hook. -
- - Structural and performance enhancements:
-
-
-
- Replace on-trace GC frame syncing with interpreter exit. -
- Improve hash lookup specialization by not removing dead keys during GC. -
- Turn traces into true GC objects. -
- Avoid starting a GC cycle immediately after library init. -
- Add weak guards to improve dead-code elimination. -
- Speed up string interning. -
-
LuaJIT 2.0.0-beta4 — 2010-03-28
--
-
- Correctness and completeness:
-
-
-
- Fix precondition for on-trace creation of table keys. -
- Fix {f()} on x64 when table is resized. -
- Fix folding of ordered comparisons with same references. -
- Fix snapshot restores for multi-result bytecodes. -
- Fix potential hang when recording bytecode with nested closures. -
- Fix recording of getmetatable(), tonumber() and bad argument types. -
- Fix SLOAD fusion across returns to lower frames. -
- - Structural and performance enhancements:
-
-
-
- Add array bounds check elimination. -Oabc is enabled by default. -
- More tuning for x64, e.g. smaller table objects. -
-
LuaJIT 2.0.0-beta3 — 2010-03-07
--
-
- LuaJIT x64 port:
-
-
-
- Port integrated memory allocator to Linux/x64, Windows/x64 and OSX/x64. -
- Port interpreter and JIT compiler to x64. -
- Port DynASM to x64. -
- Many 32/64 bit cleanups in the VM. -
- Allow building the interpreter with either x87 or SSE2 arithmetics. -
- Add external unwinding and C++ exception interop (default on x64). -
- - Correctness and completeness:
-
-
-
- Fix constructor bytecode generation for certain conditional values. -
- Fix some cases of ordered string comparisons. -
- Fix lua_tocfunction(). -
- Fix cutoff register in JMP bytecode for some conditional expressions. -
- Fix PHI marking algorithm for references from variant slots. -
- Fix package.cpath for non-default PREFIX. -
- Fix DWARF2 frame unwind information for interpreter on OSX. -
- Drive the GC forward on string allocations in the parser. -
- Implement call/return hooks (zero-cost if disabled). -
- Implement yield from C hooks. -
- Disable JIT compiler on older non-SSE2 CPUs instead of aborting. -
- - Structural and performance enhancements:
-
-
-
- Compile recursive code (tail-, up- and down-recursion). -
- Improve heuristics for bytecode penalties and blacklisting. -
- Split CALL/FUNC recording and clean up fast function call semantics. -
- Major redesign of internal function call handling. -
- Improve FOR loop const specialization and integerness checks. -
- Switch to pre-initialized stacks. Avoid frame-clearing. -
- Colocation of prototypes and related data: bytecode, constants, debug info. -
- Cleanup parser and streamline bytecode generation. -
- Add support for weak IR references to register allocator. -
- Switch to compressed, extensible snapshots. -
- Compile returns to frames below the start frame. -
- Improve alias analysis of upvalues using a disambiguation hash value. -
- Compile floor/ceil/trunc to SSE2 helper calls or SSE4.1 instructions. -
- Add generic C call handling to IR and backend. -
- Improve KNUM fuse vs. load heuristics. -
- Compile various io.*() functions. -
- Compile math.sinh(), math.cosh(), math.tanh() -and math.random(). -
-
LuaJIT 2.0.0-beta2 — 2009-11-09
--
-
- Reorganize build system. Build static+shared library on POSIX. -
- Allow C++ exception conversion on all platforms -using a wrapper function. -
- Automatically catch C++ exceptions and rethrow Lua error -(DWARF2 only). -
- Check for the correct x87 FPU precision at strategic points. -
- Always use wrappers for libm functions. -
- Resurrect metamethod name strings before copying them. -
- Mark current trace, even if compiler is idle. -
- Ensure FILE metatable is created only once. -
- Fix type comparisons when different integer types are involved. -
- Fix getmetatable() recording. -
- Fix TDUP with dead keys in template table. -
- jit.flush(tr) returns status. -Prevent manual flush of a trace that's still linked. -
- Improve register allocation heuristics for invariant references. -
- Compile the push/pop variants of table.insert() and -table.remove(). -
- Compatibility with MSVC link /debug. -
- Fix lua_iscfunction(). -
- Fix math.random() when compiled with -fpic (OSX). -
- Fix table.maxn(). -
- Bump MACOSX_DEPLOYMENT_TARGET to 10.4 -
- luaL_check*() and luaL_opt*() now support
-negative arguments, too.
-This matches the behavior of Lua 5.1, but not the specification.
-
LuaJIT 2.0.0-beta1 — 2009-10-31
--
-
- This is the first public release of LuaJIT 2.0. -
- The whole VM has been rewritten from the ground up, so there's -no point in listing differences over earlier versions. -
-
-
-LuaJIT 1.1.8 — 2012-04-16
--
-
- Merged with Lua 5.1.5. Also integrated fixes for all -» » currently known bugs in Lua 5.1.5. -
LuaJIT 1.1.7 — 2011-05-05
--
-
- Added fixes for the -» currently known bugs in Lua 5.1.4. -
LuaJIT 1.1.6 — 2010-03-28
--
-
- Added fixes for the -» currently known bugs in Lua 5.1.4. -
- Removed wrong GC check in jit_createstate(). -Thanks to Tim Mensch. -
- Fixed bad assertions while compiling table.insert() and -table.remove(). -
LuaJIT 1.1.5 — 2008-10-25
--
-
- Merged with Lua 5.1.4. Fixes all -» known bugs in Lua 5.1.3. -
LuaJIT 1.1.4 — 2008-02-05
--
-
- Merged with Lua 5.1.3. Fixes all -» known bugs in Lua 5.1.2. -
- Fixed possible (but unlikely) stack corruption while compiling -k^x expressions. -
- Fixed DynASM template for cmpss instruction. -
LuaJIT 1.1.3 — 2007-05-24
--
-
- Merged with Lua 5.1.2. Fixes all -» known bugs in Lua 5.1.1. -
- Merged pending Lua 5.1.x fixes: "return -nil" bug, spurious count hook call. -
- Remove a (sometimes) wrong assertion in luaJIT_findpc(). -
- DynASM now allows labels for displacements and .aword. -
- Fix some compiler warnings for DynASM glue (internal API change). -
- Correct naming for SSSE3 (temporarily known as SSE4) in DynASM and x86 disassembler. -
- The loadable debug modules now handle redirection to stdout -(e.g. -j trace=-). -
LuaJIT 1.1.2 — 2006-06-24
--
-
- Fix MSVC inline assembly: use only local variables with -lua_number2int(). -
- Fix "attempt to call a thread value" bug on Mac OS X: -make values of consts used as lightuserdata keys unique -to avoid joining by the compiler/linker. -
LuaJIT 1.1.1 — 2006-06-20
--
-
- Merged with Lua 5.1.1. Fixes all -» known bugs in Lua 5.1. -
- Enforce (dynamic) linker error for EXE/DLL version mismatches. -
- Minor changes to DynASM: faster pre-processing, smaller encoding -for some immediates. -
-This release is in sync with Coco 1.1.1 (see the -» Coco Change History). -
- -LuaJIT 1.1.0 — 2006-03-13
--
-
- Merged with Lua 5.1 (final). - -
- New JIT call frame setup:
-
-
-
- The C stack is kept 16 byte aligned (faster). -Mandatory for Mac OS X on Intel, too. -
- Faster calling conventions for internal C helper functions. -
- Better instruction scheduling for function prologue, OP_CALL and -OP_RETURN. -
-
- - Miscellaneous optimizations:
-
-
-
- Faster loads of FP constants. Remove narrow-to-wide store-to-load -forwarding stalls. -
- Use (scalar) SSE2 ops (if the CPU supports it) to speed up slot moves -and FP to integer conversions. -
- Optimized the two-argument form of OP_CONCAT (a..b). -
- Inlined OP_MOD (a%b). -With better accuracy than the C variant, too. -
- Inlined OP_POW (a^b). Unroll x^k or -use k^x = 2^(log2(k)*x) or call pow(). -
-
- - Changes in the optimizer:
-
-
-
- Improved hinting for table keys derived from table values -(t1[t2[x]]). -
- Lookup hinting now works with arbitrary object types and -supports index chains, too. -
- Generate type hints for arithmetic and comparison operators, -OP_LEN, OP_CONCAT and OP_FORPREP. -
- Remove several hint definitions in favour of a generic COMBINE hint. -
- Complete rewrite of jit.opt_inline module -(ex jit.opt_lib). -
-
- - Use adaptive deoptimization:
-
-
-
- If runtime verification of a contract fails, the affected -instruction is recompiled and patched on-the-fly. -Regular programs will trigger deoptimization only occasionally. -
- This avoids generating code for uncommon fallback cases -most of the time. Generated code is up to 30% smaller compared to -LuaJIT 1.0.3. -
- Deoptimization is used for many opcodes and contracts:
-
-
-
- OP_CALL, OP_TAILCALL: type mismatch for callable. -
- Inlined calls: closure mismatch, parameter number and type mismatches. -
- OP_GETTABLE, OP_SETTABLE: table or key type and range mismatches. -
- All arithmetic and comparison operators, OP_LEN, OP_CONCAT, -OP_FORPREP: operand type and range mismatches. -
- - Complete redesign of the debug and traceback info -(bytecode ↔ mcode) to support deoptimization. -Much more flexible and needs only 50% of the space. -
- The modules jit.trace, jit.dumphints and -jit.dump handle deoptimization. -
-
- - Inlined many popular library functions
-(for commonly used arguments only):
-
-
-
- Most math.* functions (the 18 most used ones) -[2x-10x faster]. -
- string.len, string.sub and string.char -[2x-10x faster]. -
- table.insert, table.remove and table.getn -[3x-5x faster]. -
- coroutine.yield and coroutine.resume -[3x-5x faster]. -
- pairs, ipairs and the corresponding iterators -[8x-15x faster]. -
-
- - Changes in the core and loadable modules and the stand-alone executable:
-
-
-
- Added jit.version, jit.version_num -and jit.arch. -
- Reorganized some internal API functions (jit.util.*mcode*). -
- The -j dump output now shows JSUB names, too. -
- New x86 disassembler module written in pure Lua. No dependency -on ndisasm anymore. Flexible API, very compact (500 lines) -and complete (x87, MMX, SSE, SSE2, SSE3, SSSE3, privileged instructions). -
- luajit -v prints the LuaJIT version and copyright -on a separate line. -
-
- - Added SSE, SSE2, SSE3 and SSSE3 support to DynASM. -
- Miscellaneous doc changes. Added a section about -embedding LuaJIT. -
-This release is in sync with Coco 1.1.0 (see the -» Coco Change History). -
-
-
-LuaJIT 1.0.3 — 2005-09-08
--
-
- Even more docs. -
- Unified closure checks in jit.*. -
- Fixed some range checks in jit.util.*. -
- Fixed __newindex call originating from jit_settable_str(). -
- Merged with Lua 5.1 alpha (including early bug fixes). -
-This is the first public release of LuaJIT. -
- -LuaJIT 1.0.2 — 2005-09-02
--
-
- Add support for flushing the Valgrind translation cache
-(MYCFLAGS= -DUSE_VALGRIND).
- - Add support for freeing executable mcode memory to the mmap()-based -variant for POSIX systems. -
- Reorganized the C function signature handling in -jit.opt_lib. -
- Changed to index-based hints for inlining C functions. -Still no support in the backend for inlining. -
- Hardcode HEAP_CREATE_ENABLE_EXECUTE value if undefined. -
- Misc. changes to the jit.* modules. -
- Misc. changes to the Makefiles. -
- Lots of new docs. -
- Complete doc reorg. -
-Not released because Lua 5.1 alpha came out today. -
- -LuaJIT 1.0.1 — 2005-08-31
--
-
- Missing GC step in OP_CONCAT. -
- Fix result handling for C –> JIT calls. -
- Detect CPU feature bits. -
- Encode conditional moves (fucomip) only when supported. -
- Add fallback instructions for FP compares. -
- Add support for LUA_COMPAT_VARARG. Still disabled by default. -
- MSVC needs a specific place for the CALLBACK attribute -(David Burgess). -
- Misc. doc updates. -
-Interim non-public release. -Special thanks to Adam D. Moss for reporting most of the bugs. -
- -LuaJIT 1.0.0 — 2005-08-29
--This is the initial non-public release of LuaJIT. -
--