From 55b16959717084884fd4a0cbae6d19e3786c20c7 Mon Sep 17 00:00:00 2001 From: Mike Pall Date: Tue, 8 Dec 2009 19:46:35 +0100 Subject: RELEASE LuaJIT-2.0.0-beta1 --- doc/changes.html | 281 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 doc/changes.html (limited to 'doc/changes.html') diff --git a/doc/changes.html b/doc/changes.html new file mode 100644 index 00000000..6c34b8be --- /dev/null +++ b/doc/changes.html @@ -0,0 +1,281 @@ + + + +LuaJIT Change History + + + + + + + + + +
+Lua +
+ + +
+

+This is a list of changes between the released versions of LuaJIT.
+The current development version is LuaJIT 2.0.0-beta1.
+The current stable version is LuaJIT 1.1.5. +

+

+Please check the +» Online Change History +to see whether newer versions are available. +

+ +
+

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 1.1.5 — 2008-10-25

+ + +

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 preprocessing, 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 bugfixes).
    • +
+

+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. +

+
+
+
+ + + -- cgit v1.2.3-55-g6feb