v8/ChangeLog
mads.s.ager cbaa060d28 Improved performance of garbage collection by moving the function that updates pointers during compacting collection into the updating visitor. This gives the compiler a better chance to inline and avoid a function call per (potential) pointer.
Extended the shell sample with a --runtime-flags option.

Added Visual Studio project files for the shell.cc and process.cc samples.



git-svn-id: http://v8.googlecode.com/svn/trunk@14 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2008-08-14 13:41:48 +00:00

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2008-08-14: Version 0.2.3
Improved performance of garbage collection by moving the
function that updates pointers during compacting collection
into the updating visitor. This gives the compiler a better
chance to inline and avoid a function call per (potential)
pointer.
Extended the shell sample with a --runtime-flags option.
Added Visual Studio project files for the shell.cc and
process.cc samples.
2008-08-13: Version 0.2.2
Improved performance of garbage collection by changing the way
we use the marking stack in the event of stack overflow during
full garbage collection and by changing the way we mark roots.
Cleaned up ARM version by removing top of stack caching and by
introducing push/pop elimination.
Cleaned up the way runtime functions are called to allow
runtime calls with no arguments.
Changed Windows build options to make sure that exceptions are
disabled and that optimization flags are enabled.
Added first version of Visual Studio project files.
2008-08-06: Version 0.2.1
Improved performance of unary addition by avoiding runtime calls.
Fixed the handling of '>' and '<=' to use right-to-left conversion
and left-to-right evaluation as specified by ECMA-262.
Fixed a branch elimination bug on the ARM platform where incorrect
code was generated because of overly aggressive branch
elimination.
Improved performance of code that repeatedly assigns the same
function to the same property of different objects with the same
map.
Untangled DEBUG and ENABLE_DISASSEMBLER defines. The disassembler
no longer expects DEBUG to be defined.
Added platform-nullos.cc to serve as the basis for new platform
implementations.
2008-07-30: Version 0.2.0
Changed all text files to have native svn:eol-style.
Added a few samples and support for building them. The samples
include a simple shell that can be used to benchmark and test V8.
Changed V8::GetVersion to return the version as a string.
Added source for lazily loaded scripts to snapshots and made
serialization non-destructive.
Improved ARM support by fixing the write barrier code to use
aligned loads and stores and by removing premature locals
optimization that relied on broken support for callee-saved
registers (removed).
Refactored the code for marking live objects during garbage
collection and the code for allocating objects in paged
spaces. Introduced an abstraction for the map word of a heap-
allocated object and changed the memory allocator to allocate
executable memory only for spaces that may contain code objects.
Moved StringBuilder to utils.h and ScopedLock to platform.h, where
they can be used by debugging and logging modules. Added
thread-safe message queues for dealing with debugger events.
Fixed the source code reported by toString for certain builtin
empty functions and made sure that the prototype property of a
function is enumerable.
Improved performance of converting values to condition flags in
generated code.
Merged disassembler-{arch} files.
2008-07-28: Version 0.1.4
Added support for storing JavaScript stack traces in a stack
allocated buffer to make it visible in shallow core dumps.
Controlled by the --preallocate-message-memory flag which is
disabled by default.
2008-07-25: Version 0.1.3
Fixed bug in JSObject::GetPropertyAttributePostInterceptor where
map transitions would count as properties.
Allowed aliased eval invocations by treating them as evals in the
global context. This may change in the future.
Added support for accessing the last entered context through the
API and renamed Context::Current to Context::GetCurrent and
Context::GetSecurityContext to Context::GetCurrentSecurityContext.
Fixed bug in the debugger that would cause the debugger scripts to
be recursively loaded and changed all disabling of interrupts to
be block-structured.
Made snapshot data read-only to allow it to be more easily shared
across multiple users of V8 when linked as a shared library.
2008-07-16: Version 0.1.2
Fixed building on Mac OS X by recognizing i386 and friends as
IA-32 platforms.
Added propagation of stack overflow exceptions that occur while
compiling nested functions.
Improved debugger with support for recursive break points and
handling of exceptions that occur in the debugger JavaScript code.
Renamed GetInternal to GetInternalField and SetInternal to
SetInternalField in the API and moved InternalFieldCount and
SetInternalFieldCount from FunctionTemplate to ObjectTemplate.
2008-07-09: Version 0.1.1
Fixed bug in stack overflow check code for IA-32 targets where a
non-tagged value in register eax was pushed to the stack.
Fixed potential quadratic behavior when converting strings to
numbers.
Fixed bug where the return value from Object::SetProperty could
end up being the property holder instead of the written value.
Improved debugger support by allowing nested break points and by
dealing with stack-overflows when compiling functions before
setting break points in them.
2008-07-03: Version 0.1.0
Initial export.