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diff --git a/luajit-2.1/doc/changes.html b/luajit-2.1/doc/changes.html index 0d3e5ae..826cd24 100644 --- a/luajit-2.1/doc/changes.html +++ b/luajit-2.1/doc/changes.html @@ -65,7 +65,7 @@ div.major { max-width: 600px; padding: 1em; margin: 1em 0 1em 0; } <div id="main"> <p> This is a list of changes between the released versions of LuaJIT.<br> -The current <span style="color: #0000c0;">stable version</span> is <strong>LuaJIT 2.0.3</strong>.<br> +The current <span style="color: #0000c0;">stable version</span> is <strong>LuaJIT 2.0.4</strong>.<br> </p> <p> Please check the @@ -74,6 +74,112 @@ to see whether newer versions are available. </p> <div class="major" style="background: #d0d0ff;"> +<h2 id="LuaJIT-2.1.0-beta1">LuaJIT 2.1.0-beta1 — 2015-08-25</h2> +<p> +This is a brief summary of the major changes in LuaJIT 2.1 compared to 2.0. +Please take a look at the commit history for more details. +</p> +<ul> +<li>Changes to the VM core: +<ul> +<li>Add low-overhead profiler (<tt>-jp</tt>).</li> +<li>Add <tt>LJ_GC64</tt> mode: 64 bit GC object references (really: 47 bit). Interpreter-only for now.</li> +<li>Add <tt>LJ_FR2</tt> mode: Two-slot frame info. Required by <tt>LJ_GC64</tt> mode.</li> +<li>Add <tt>table.new()</tt> and <tt>table.clear()</tt>.</li> +<li>Parse Unicode escape <tt>'\u{XX...}'</tt> in string literals.</li> +<li>Parse binary number literals (<tt>0bxxx</tt>).</li> +</ul></li> +<li>Improvements to the JIT compiler: +<ul> +<li>Add trace stitching.</li> +<li>Compile various builtins: <tt>string.char()</tt>, <tt>string.reverse()</tt>, <tt>string.lower()</tt>, <tt>string.upper()</tt>, <tt>string.rep()</tt>, <tt>string.format()</tt>, <tt>table.concat()</tt>, <tt>bit.tohex()</tt>, <tt>getfenv(0)</tt>, <tt>debug.getmetatable()</tt>.</li> +<li>Compile <tt>string.find()</tt> for fixed string searches (no patterns).</li> +<li>Compile <tt>BC_TSETM</tt>, e.g. <tt>{1,2,3,f()}</tt>.</li> +<li>Compile string concatenations (<tt>BC_CAT</tt>).</li> +<li>Compile <tt>__concat</tt> metamethod.</li> +<li>Various minor optimizations.</li> +</ul></li> +<li>Internal Changes: +<ul> +<li>Add support for embedding LuaJIT bytecode for builtins.</li> +<li>Replace various builtins with embedded bytecode.</li> +<li>Refactor string buffers and string formatting.</li> +<li>Remove obsolete non-truncating number to integer conversions.</li> +</ul></li> +<li>Ports: +<ul> +<li>Add Xbox One port (<tt>LJ_GC64</tt> mode).</li> +<li>ARM64: Add port of the interpreter (<tt>LJ_GC64</tt> mode).</li> +<li>x64: Add separate port of the interpreter to <tt>LJ_GC64</tt> mode.</li> +<li>x86/x64: Drop internal x87 math functions. Use libm functions.</li> +<li>x86: Remove x87 support from interpreter. SSE2 is mandatory now.</li> +<li>x86/x64: Add support for AES-NI, AVX and AVX2 to DynASM.</li> +<li>PPC/e500: Drop support for this architecture.</li> +</ul></li> +<li>FFI library: +<ul> +<li>FFI: Add 64 bit bitwise operations.</li> +<li>FFI: Compile VLA/VLS and large cdata allocations with default initialization.</li> +<li>FFI: Compile conversions from functions to function pointers.</li> +<li>FFI: Compile lightuserdata to <tt>void *</tt> conversion.</li> +<li>FFI: Compile <tt>ffi.gc(cdata, nil)</tt>, too.</li> +<li>FFI: Add <tt>ffi.typeinfo()</tt>.</li> +<li>FFI: Add <tt>ssize_t</tt> declaration.</li> +</ul></li> +</ul> +</div> + +<div class="major" style="background: #ffffd0;"> +<h2 id="LuaJIT-2.0.4">LuaJIT 2.0.4 — 2015-05-14</h2> +<ul> +<li>Fix stack check in narrowing optimization.</li> +<li>Fix Lua/C API typecheck error for special indexes.</li> +<li>Fix string to number conversion.</li> +<li>Fix lexer error for chunks without tokens.</li> +<li>Don't compile <tt>IR_RETF</tt> after <tt>CALLT</tt> to ff with-side effects.</li> +<li>Fix <tt>BC_UCLO</tt>/<tt>BC_JMP</tt> join optimization in Lua parser.</li> +<li>Fix corner case in string to number conversion.</li> +<li>Gracefully handle <tt>lua_error()</tt> for a suspended coroutine.</li> +<li>Avoid error messages when building with Clang.</li> +<li>Fix snapshot #0 handling for traces with a stack check on entry.</li> +<li>Fix fused constant loads under high register pressure.</li> +<li>Invalidate backpropagation cache after DCE.</li> +<li>Fix ABC elimination.</li> +<li>Fix debug info for main chunk of stripped bytecode.</li> +<li>Fix FOLD rule for <tt>string.sub(s, ...) == k</tt>.</li> +<li>Fix FOLD rule for <tt>STRREF</tt> of <tt>SNEW</tt>.</li> +<li>Fix frame traversal while searching for error function.</li> +<li>Prevent GC estimate miscalculation due to buffer growth.</li> +<li>Prevent adding side traces for stack checks.</li> +<li>Fix top slot calculation for snapshots with continuations.</li> +<li>Fix check for reuse of SCEV results in <tt>FORL</tt>.</li> +<li>Add PS Vita port.</li> +<li>Fix compatibility issues with Illumos.</li> +<li>Fix DragonFly build (unsupported).</li> +<li>OpenBSD/x86: Better executable memory allocation for W^X mode.</li> +<li>x86: Fix argument checks for <tt>ipairs()</tt> iterator.</li> +<li>x86: <tt>lj_math_random_step()</tt> clobbers XMM regs on OSX Clang.</li> +<li>x86: Fix code generation for unused result of <tt>math.random()</tt>.</li> +<li>x64: Allow building with <tt>LUAJIT_USE_SYSMALLOC</tt> and <tt>LUAJIT_USE_VALGRIND</tt>.</li> +<li>x86/x64: Fix argument check for bit shifts.</li> +<li>x86/x64: Fix code generation for fused test/arith ops.</li> +<li>ARM: Fix write barrier check in <tt>BC_USETS</tt>.</li> +<li>PPC: Fix red zone overflow in machine code generation.</li> +<li>PPC: Don't use <tt>mcrxr</tt> on PPE.</li> +<li>Various archs: Fix excess stack growth in interpreter.</li> +<li>FFI: Fix FOLD rule for <tt>TOBIT</tt> + <tt>CONV num.u32</tt>.</li> +<li>FFI: Prevent DSE across <tt>ffi.string()</tt>.</li> +<li>FFI: No meta fallback when indexing pointer to incomplete struct.</li> +<li>FFI: Fix initialization of unions of subtypes.</li> +<li>FFI: Fix cdata vs. non-cdata arithmetic and comparisons.</li> +<li>FFI: Fix <tt>__index</tt>/<tt>__newindex</tt> metamethod resolution for ctypes.</li> +<li>FFI: Fix compilation of reference field access.</li> +<li>FFI: Fix frame traversal for backtraces with FFI callbacks.</li> +<li>FFI: Fix recording of indexing a struct pointer ctype object itself.</li> +<li>FFI: Allow non-scalar cdata to be compared for equality by address.</li> +<li>FFI: Fix pseudo type conversions for type punning.</li> +</ul> + <h2 id="LuaJIT-2.0.3">LuaJIT 2.0.3 — 2014-03-12</h2> <ul> <li>Add PS4 port.</li> @@ -687,235 +793,6 @@ This matches the behavior of Lua 5.1, but not the specification.</li> no point in listing differences over earlier versions.</li> </ul> </div> - -<div class="major" style="background: #ffff80;"> -<h2 id="LuaJIT-1.1.8">LuaJIT 1.1.8 — 2012-04-16</h2> -<ul> -<li>Merged with Lua 5.1.5. Also integrated fixes for all -<a href="http://www.lua.org/bugs.html#5.1.5"><span class="ext">»</span> <span class="ext">»</span> currently known bugs in Lua 5.1.5</a>.</li> -</ul> - -<h2 id="LuaJIT-1.1.7">LuaJIT 1.1.7 — 2011-05-05</h2> -<ul> -<li>Added fixes for the -<a href="http://www.lua.org/bugs.html#5.1.4"><span class="ext">»</span> currently known bugs in Lua 5.1.4</a>.</li> -</ul> - -<h2 id="LuaJIT-1.1.6">LuaJIT 1.1.6 — 2010-03-28</h2> -<ul> -<li>Added fixes for the -<a href="http://www.lua.org/bugs.html#5.1.4"><span class="ext">»</span> currently known bugs in Lua 5.1.4</a>.</li> -<li>Removed wrong GC check in <tt>jit_createstate()</tt>. -Thanks to Tim Mensch.</li> -<li>Fixed bad assertions while compiling <tt>table.insert()</tt> and -<tt>table.remove()</tt>.</li> -</ul> - -<h2 id="LuaJIT-1.1.5">LuaJIT 1.1.5 — 2008-10-25</h2> -<ul> -<li>Merged with Lua 5.1.4. Fixes all -<a href="http://www.lua.org/bugs.html#5.1.3"><span class="ext">»</span> known bugs in Lua 5.1.3</a>.</li> -</ul> - -<h2 id="LuaJIT-1.1.4">LuaJIT 1.1.4 — 2008-02-05</h2> -<ul> -<li>Merged with Lua 5.1.3. Fixes all -<a href="http://www.lua.org/bugs.html#5.1.2"><span class="ext">»</span> known bugs in Lua 5.1.2</a>.</li> -<li>Fixed possible (but unlikely) stack corruption while compiling -<tt>k^x</tt> expressions.</li> -<li>Fixed DynASM template for cmpss instruction.</li> -</ul> - -<h2 id="LuaJIT-1.1.3">LuaJIT 1.1.3 — 2007-05-24</h2> -<ul> -<li>Merged with Lua 5.1.2. Fixes all -<a href="http://www.lua.org/bugs.html#5.1.1"><span class="ext">»</span> known bugs in Lua 5.1.1</a>.</li> -<li>Merged pending Lua 5.1.x fixes: "return -nil" bug, spurious count hook call.</li> -<li>Remove a (sometimes) wrong assertion in <tt>luaJIT_findpc()</tt>.</li> -<li>DynASM now allows labels for displacements and <tt>.aword</tt>.</li> -<li>Fix some compiler warnings for DynASM glue (internal API change).</li> -<li>Correct naming for SSSE3 (temporarily known as SSE4) in DynASM and x86 disassembler.</li> -<li>The loadable debug modules now handle redirection to stdout -(e.g. <tt>-j trace=-</tt>).</li> -</ul> - -<h2 id="LuaJIT-1.1.2">LuaJIT 1.1.2 — 2006-06-24</h2> -<ul> -<li>Fix MSVC inline assembly: use only local variables with -<tt>lua_number2int()</tt>.</li> -<li>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.</li> -</ul> - -<h2 id="LuaJIT-1.1.1">LuaJIT 1.1.1 — 2006-06-20</h2> -<ul> -<li>Merged with Lua 5.1.1. Fixes all -<a href="http://www.lua.org/bugs.html#5.1"><span class="ext">»</span> known bugs in Lua 5.1</a>.</li> -<li>Enforce (dynamic) linker error for EXE/DLL version mismatches.</li> -<li>Minor changes to DynASM: faster pre-processing, smaller encoding -for some immediates.</li> -</ul> -<p> -This release is in sync with Coco 1.1.1 (see the -<a href="http://coco.luajit.org/changes.html"><span class="ext">»</span> Coco Change History</a>). -</p> - -<h2 id="LuaJIT-1.1.0">LuaJIT 1.1.0 — 2006-03-13</h2> -<ul> -<li>Merged with Lua 5.1 (final).</li> - -<li>New JIT call frame setup: -<ul> -<li>The C stack is kept 16 byte aligned (faster). -Mandatory for Mac OS X on Intel, too.</li> -<li>Faster calling conventions for internal C helper functions.</li> -<li>Better instruction scheduling for function prologue, OP_CALL and -OP_RETURN.</li> -</ul></li> - -<li>Miscellaneous optimizations: -<ul> -<li>Faster loads of FP constants. Remove narrow-to-wide store-to-load -forwarding stalls.</li> -<li>Use (scalar) SSE2 ops (if the CPU supports it) to speed up slot moves -and FP to integer conversions.</li> -<li>Optimized the two-argument form of <tt>OP_CONCAT</tt> (<tt>a..b</tt>).</li> -<li>Inlined <tt>OP_MOD</tt> (<tt>a%b</tt>). -With better accuracy than the C variant, too.</li> -<li>Inlined <tt>OP_POW</tt> (<tt>a^b</tt>). Unroll <tt>x^k</tt> or -use <tt>k^x = 2^(log2(k)*x)</tt> or call <tt>pow()</tt>.</li> -</ul></li> - -<li>Changes in the optimizer: -<ul> -<li>Improved hinting for table keys derived from table values -(<tt>t1[t2[x]]</tt>).</li> -<li>Lookup hinting now works with arbitrary object types and -supports index chains, too.</li> -<li>Generate type hints for arithmetic and comparison operators, -OP_LEN, OP_CONCAT and OP_FORPREP.</li> -<li>Remove several hint definitions in favour of a generic COMBINE hint.</li> -<li>Complete rewrite of <tt>jit.opt_inline</tt> module -(ex <tt>jit.opt_lib</tt>).</li> -</ul></li> - -<li>Use adaptive deoptimization: -<ul> -<li>If runtime verification of a contract fails, the affected -instruction is recompiled and patched on-the-fly. -Regular programs will trigger deoptimization only occasionally.</li> -<li>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.</li> -<li>Deoptimization is used for many opcodes and contracts: -<ul> -<li>OP_CALL, OP_TAILCALL: type mismatch for callable.</li> -<li>Inlined calls: closure mismatch, parameter number and type mismatches.</li> -<li>OP_GETTABLE, OP_SETTABLE: table or key type and range mismatches.</li> -<li>All arithmetic and comparison operators, OP_LEN, OP_CONCAT, -OP_FORPREP: operand type and range mismatches.</li> -</ul></li> -<li>Complete redesign of the debug and traceback info -(bytecode ↔ mcode) to support deoptimization. -Much more flexible and needs only 50% of the space.</li> -<li>The modules <tt>jit.trace</tt>, <tt>jit.dumphints</tt> and -<tt>jit.dump</tt> handle deoptimization.</li> -</ul></li> - -<li>Inlined many popular library functions -(for commonly used arguments only): -<ul> -<li>Most <tt>math.*</tt> functions (the 18 most used ones) -[2x-10x faster].</li> -<li><tt>string.len</tt>, <tt>string.sub</tt> and <tt>string.char</tt> -[2x-10x faster].</li> -<li><tt>table.insert</tt>, <tt>table.remove</tt> and <tt>table.getn</tt> -[3x-5x faster].</li> -<li><tt>coroutine.yield</tt> and <tt>coroutine.resume</tt> -[3x-5x faster].</li> -<li><tt>pairs</tt>, <tt>ipairs</tt> and the corresponding iterators -[8x-15x faster].</li> -</ul></li> - -<li>Changes in the core and loadable modules and the stand-alone executable: -<ul> -<li>Added <tt>jit.version</tt>, <tt>jit.version_num</tt> -and <tt>jit.arch</tt>.</li> -<li>Reorganized some internal API functions (<tt>jit.util.*mcode*</tt>).</li> -<li>The <tt>-j dump</tt> output now shows JSUB names, too.</li> -<li>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).</li> -<li><tt>luajit -v</tt> prints the LuaJIT version and copyright -on a separate line.</li> -</ul></li> - -<li>Added SSE, SSE2, SSE3 and SSSE3 support to DynASM.</li> -<li>Miscellaneous doc changes. Added a section about -<a href="install.html#embedding">embedding LuaJIT</a>.</li> -</ul> -<p> -This release is in sync with Coco 1.1.0 (see the -<a href="http://coco.luajit.org/changes.html"><span class="ext">»</span> Coco Change History</a>). -</p> -</div> - -<div class="major" style="background: #ffffd0;"> -<h2 id="LuaJIT-1.0.3">LuaJIT 1.0.3 — 2005-09-08</h2> -<ul> -<li>Even more docs.</li> -<li>Unified closure checks in <tt>jit.*</tt>.</li> -<li>Fixed some range checks in <tt>jit.util.*</tt>.</li> -<li>Fixed __newindex call originating from <tt>jit_settable_str()</tt>.</li> -<li>Merged with Lua 5.1 alpha (including early bug fixes).</li> -</ul> -<p> -This is the first public release of LuaJIT. -</p> - -<h2 id="LuaJIT-1.0.2">LuaJIT 1.0.2 — 2005-09-02</h2> -<ul> -<li>Add support for flushing the Valgrind translation cache <br> -(<tt>MYCFLAGS= -DUSE_VALGRIND</tt>).</li> -<li>Add support for freeing executable mcode memory to the <tt>mmap()</tt>-based -variant for POSIX systems.</li> -<li>Reorganized the C function signature handling in -<tt>jit.opt_lib</tt>.</li> -<li>Changed to index-based hints for inlining C functions. -Still no support in the backend for inlining.</li> -<li>Hardcode <tt>HEAP_CREATE_ENABLE_EXECUTE</tt> value if undefined.</li> -<li>Misc. changes to the <tt>jit.*</tt> modules.</li> -<li>Misc. changes to the Makefiles.</li> -<li>Lots of new docs.</li> -<li>Complete doc reorg.</li> -</ul> -<p> -Not released because Lua 5.1 alpha came out today. -</p> - -<h2 id="LuaJIT-1.0.1">LuaJIT 1.0.1 — 2005-08-31</h2> -<ul> -<li>Missing GC step in <tt>OP_CONCAT</tt>.</li> -<li>Fix result handling for C –> JIT calls.</li> -<li>Detect CPU feature bits.</li> -<li>Encode conditional moves (<tt>fucomip</tt>) only when supported.</li> -<li>Add fallback instructions for FP compares.</li> -<li>Add support for <tt>LUA_COMPAT_VARARG</tt>. Still disabled by default.</li> -<li>MSVC needs a specific place for the <tt>CALLBACK</tt> attribute -(David Burgess).</li> -<li>Misc. doc updates.</li> -</ul> -<p> -Interim non-public release. -Special thanks to Adam D. Moss for reporting most of the bugs. -</p> - -<h2 id="LuaJIT-1.0.0">LuaJIT 1.0.0 — 2005-08-29</h2> -<p> -This is the initial non-public release of LuaJIT. -</p> -</div> <br class="flush"> </div> <div id="foot"> |