Re: [webkit-dev] Announcing the TyGL-WebKit port to accelerate 2D web rendering with GPU

2014-11-18 Thread Zoltan Herczeg
tests run correctly from 6 tests) Site: http://www.kevs3d.co.uk/dev/asteroidsbench/ Regards, Zoltan How does TyGL perform compared to the other rasterizers? What benchmarks do you use to guide the performance work? On 11/12/14, 11:12 PM, Zoltan Herczeg wrote: Hi All, We are proud

Re: [webkit-dev] Announcing the TyGL-WebKit port to accelerate 2D web rendering with GPU

2014-11-13 Thread Zoltan Herczeg
Hi, we encountered some unexpected issues with Cairo-EFL on our board. When it works again, we will do some measurement. Regards, Zoltan How does TyGL perform compared to the other rasterizers? What benchmarks do you use to guide the performance work? On 11/12/14, 11:12 PM, Zoltan Herczeg

Re: [webkit-dev] Announcing the TyGL-WebKit port to accelerate 2D web rendering with GPU

2014-11-13 Thread Zoltan Herczeg
Hi, What makes the 2D drawing code WebKit-specific? Is it possible to package up the rendering code into a self-contained standalone library? It is possible to make it a standalone library in the future. But we are working on WebKit, we want to accelerate WebKit graphics, and WebKit has a nice

[webkit-dev] Announcing the TyGL-WebKit port to accelerate 2D web rendering with GPU

2014-11-12 Thread Zoltan Herczeg
Hi All, We are proud to announce the TyGL port (link: http://github.com/szeged/TyGL) on the top of EFL-WebKit. TyGL (pronounced as tigel) is part of WebKit and provides 2D-accelerated GPU rendering on embedded systems. The engine is purely GPU based. It has been developed on and tested against

Re: [webkit-dev] Announcement: web replay support

2014-01-13 Thread Zoltan Herczeg
Wow, this looks great! Regards, Zoltan Hello all, I’m excited to announce that I’ve begun work on upstreaming web replay support into WebKit. Web replay functionality allows developers to debug their web applications by exactly recording interactions with a web program, and then replaying

Re: [webkit-dev] Announcing new port: Nix

2013-09-12 Thread Zoltan Herczeg
However, I am quite happy that people have been working on improving the libcURL support :-) Thank you Brent. Although many people left, we are still here, and continually improving WebKit. We are serious about it. Regards, Zoltan ___ webkit-dev

Re: [webkit-dev] Parallel JavaScript: Why a separate ParallelArray types

2013-04-13 Thread Zoltan Herczeg
Perhaps we can come up with some JS API for shared memory lock and propose it in TC39 or WebApps WG? I think that would be wonderful. Anyone else interested? We proposed a shared memory concept a long time ago: https://bugs.webkit.org/show_bug.cgi?id=53485 Although it helps to reduce the

Re: [webkit-dev] Parallel JavaScript: Why a separate ParallelArray types

2013-04-12 Thread Zoltan Herczeg
A message passing model a la Web Workers has some advantages compared to threads with shared mutable state and locks: - No possibility of deadlock - No possibility of corrupting data structures due to races - No performance penalty from correctly supporting fine-grained concurrent access to

Re: [webkit-dev] Thank You

2013-04-04 Thread Zoltan Herczeg
I may miss some mails, but I didn't see a proper reply for this mail. Personally, I think WebKit and its community should also be grateful to you guys. You did a lot for WebKit as well. Although the cooperation was not always smooth, let's just keep the good memories. I wish you luck for your

Re: [webkit-dev] Is the wxWidgets port maintained?

2013-02-12 Thread Zoltan Herczeg
My point is that I think that lots of ports are part of what makes WebKit the goodness it is. Maybe I'm alone here, or at best part of a minority, but I wanted us to not lose sight of this idea. I totally agree. But I also agree with those, who thinks the different ports should not overburden

Re: [webkit-dev] RGBA8 and BGRA8 formats in WebKit

2013-01-22 Thread Zoltan Herczeg
Where in WebKit do you experience problems with color conversion? As for me WebKit2 transmits BGRA images, which needs to be converted to RGBA before it is uploaded to a texture on GLES 2.0. These conversions seems computation heavy for certain animations, and I was wondered whether do we really

[webkit-dev] RGBA8 and BGRA8 formats in WebKit

2013-01-21 Thread Zoltan Herczeg
Hi, In WebKit both RGBA and BGRA formats are used for different purposes and different platforms in WebKit. Do we have a policy which one we prefer? It would be nice to reduce conversions between them in the future as it seems costly on embedded systems. Regards, Zoltan

Re: [webkit-dev] Feature Announcement: Moving HTML Parser off the Main Thread

2013-01-10 Thread Zoltan Herczeg
Parsing, especially JS parsing still takes a large amount of time on page loading. We tried to improve the preload scanner by moving it into anouther thread, but there was no gain (except some special cases). Synchronization between threads is surprisingly (ridiculously) costly, usually worth for

Re: [webkit-dev] Feature Announcement: Moving HTML Parser off the Main Thread

2013-01-10 Thread Zoltan Herczeg
On Jan 10, 2013, at 12:11 AM, Zoltan Herczeg zherc...@webkit.org wrote: Parsing, especially JS parsing still takes a large amount of time on page loading. We tried to improve the preload scanner by moving it into anouther thread, but there was no gain (except some special cases). Synchronization

Re: [webkit-dev] WebKit + OpenCL

2012-11-26 Thread Zoltan Herczeg
acceleration (yet). I hope that we see a Core Image version of filters in the near future as well. The code for that is in the history of the repository already. Greetings, Dirk -Kling On Nov 21, 2012, at 7:30 PM, Zoltan Herczeg zherc...@webkit.org wrote: Hi, we start upstreaming some OpenCL

[webkit-dev] WebKit + OpenCL

2012-11-21 Thread Zoltan Herczeg
Hi, we start upstreaming some OpenCL optimizations into WebKit. This is the master bug: https://bugs.webkit.org/show_bug.cgi?id=70099 Regards, Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org

Re: [webkit-dev] x32 support of JavaScriptCore

2012-10-11 Thread Zoltan Herczeg
Just out of curiosity, how much code modifications are required? I read the ABI documentation the link you attached, and x32 is a regular 64 bit mode, except it seems to me that the global descriptor table is tweaked to store the same descriptors for all 4G address spaces, so the upper 32 bit is

Re: [webkit-dev] WebKit memory instrumentation

2012-07-23 Thread Zoltan Herczeg
Hi, parts(DOM, CSS, JavaScript etc) . Currently there is a real-time chart in Web Inspector that shows the render process memory broken down into several components: Unfortunately this part is removed by the mail server, and from webkit-dev archives, but as far as I remember (we measured

Re: [webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

2012-07-03 Thread Zoltan Herczeg
The ARM support for DFG-JIT is finished, and the patch is ready to review at bug 90198. Regards, Zoltan On the topic of JIT support, the baseline JIT's role is increasingly only to serve only to gather profiling data for the DFG JIT, and if you want high performance JavaScript on your

Re: [webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

2012-06-23 Thread Zoltan Herczeg
, Zoltan Herczeg zherc...@webkit.org wrote: I don't want adding instructions to SH4, MIPS, and legacy ARM to be a blocker for JSC work. I didn't say you have to wait. I just said you should notify us that something is coming which will break the build. Regards, Zoltan

Re: [webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

2012-06-22 Thread Zoltan Herczeg
Hi Filip, we (Gabor Loki and me) are the maintainers of the traditional ARM port, and we are willing to fix all issues. Just let us know what we need to do. You can assign the necessary bug reports to us and we are available in the #squirrelfish (or #webkit) channel as well. Regards, Zoltan Hi

Re: [webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

2012-06-22 Thread Zoltan Herczeg
bot cycles discovering all the cases that we missed. This consumes a lot of time that would be better spent working on the higher level portions of the JIT, that benefit all platforms. --Oliver On Jun 21, 2012, at 11:44 PM, Zoltan Herczeg wrote: Hi Filip, we (Gabor Loki and me

Re: [webkit-dev] SH4, MIPS, and legacy-ARM assemblers in JavaScriptCore

2012-06-22 Thread Zoltan Herczeg
I don't want adding instructions to SH4, MIPS, and legacy ARM to be a blocker for JSC work. I didn't say you have to wait. I just said you should notify us that something is coming which will break the build. Regards, Zoltan ___ webkit-dev mailing

Re: [webkit-dev] DFG, inline functions compileing

2012-06-17 Thread Zoltan Herczeg
Where are they compiled twice? If in the object file, than it is ok, since the compiler must provide a standalone function for even inline ones. It is needed if the function is passed as pointer. These extra functions should be thrown out by the linker in the final binary. Regards, Zoltan It's

Re: [webkit-dev] can we stop using Skipped files?

2012-06-08 Thread Zoltan Herczeg
Hi, I don't see why it would make sense to keep two parallel tools for this once all the workflow bugs people have are addressed. The reason is easy. In the past when people tried to add new features to NRWT, they were not allowed to because the feature is not useful for NRWT devs. Eventually

Re: [webkit-dev] can we stop using Skipped files?

2012-06-08 Thread Zoltan Herczeg
Hi Dirk, At any rate, I believe we are definitely open to adding new features; feel free to suggest them or work on them! I am happy to hear that. https://bugs.webkit.org/show_bug.cgi?id=88680 This is definitely a right step! And it looks like still a lot of things to do before NRWT reach

[webkit-dev] Transformations precision: double - float

2012-05-21 Thread Zoltan Herczeg
Hi, is there any reason why the transformations in WebKit use doubles? We could optimize some functions further with ARM SIMD if they would be floats. Is there any objection to make them float if the change would have no other side effects except some rounding because of the lower precision?

Re: [webkit-dev] Anyone using NEON code on ARM builds?

2012-03-21 Thread Zoltan Herczeg
Hi, btw if anyone interested about the details of this optimization you can read more about it here: http://blogs.arm.com/software-enablement/699-using-arm-neon-to-accelerate-scalable-vector-graphics-in-webkit-by-up-to-4X/ Regards, Zoltan Hi Jonathan, On 21/03/2012, at 12:56 AM, Jonathan

[webkit-dev] Grafikus teamnek

2012-03-03 Thread Zoltan Herczeg
Sziasztok! Jatszottam penteken OpenGL-el egy kicsit (MAC-en gluttal szepen ment), es arra gondoltam hogy elindulas keppen csinalhatnank valami brainstormingot az egesz temarol. Nem tudom ki mennyire ismeri az OpenGL es OpenVG mukodeset (en sem tulsagosan). Eszerint:

Re: [webkit-dev] Grafikus teamnek

2012-03-03 Thread Zoltan Herczeg
Oops sorry. Ignore this mail. Regards, Zoltan Sziasztok! Jatszottam penteken OpenGL-el egy kicsit (MAC-en gluttal szepen ment), es arra gondoltam hogy elindulas keppen csinalhatnank valami brainstormingot az egesz temarol. Nem tudom ki mennyire ismeri az OpenGL es OpenVG mukodeset (en sem

Re: [webkit-dev] Top 100 sites browsing tests proprosal

2012-01-23 Thread Zoltan Herczeg
But are you planning to run test builds against live websites? That's not very polite on people's servers (i certainly wouldn't like anyone stress-testing my own servers for their benefit). And like some other people said, tests that rely on network randomness are not very reliable indicators

Re: [webkit-dev] Top 100 sites browsing tests proprosal

2012-01-21 Thread Zoltan Herczeg
Just be careful with copyright issues. Regards, Zoltan Go for it. Adam On Sat, Jan 21, 2012 at 2:12 AM, Sergio Villar Senin svil...@igalia.com wrote: Hi, I've been thinking about this for some time now, but only a recent bug I'm constantly hitting these days

Re: [webkit-dev] Arm conditional instructions support

2011-12-12 Thread Zoltan Herczeg
Hi! Condition cc=ALL is the default function parameter in C++ (http://www.learncpp.com/cpp-tutorial/77-default-parameters/). There is no conditional instruction support in MacroAssembler level in SFX, but some lower-level optimizations use conditional execution. Regards, Zoltan Hi! I found

[webkit-dev] Custom written css lexer

2011-12-12 Thread Zoltan Herczeg
Hi, I am working on rewriting the css lexer, and someone suggested that it should be mentioned to a broader community, since we can drop the flex tool dependency from WebKit which affects all build systems. This mail is just a note, since the patch is not yet ready.

Re: [webkit-dev] WebKit branch to support multiple VMs (e.g., Dart)

2011-12-06 Thread Zoltan Herczeg
Hi Anton, I am sorry if it didn't sound clear enough in our original message, but we're not proposing a new language support, but we're proposing a patch which allows others runtimes to run along with JS in the browser. and they mostly replied to that (including some solution ideas like

Re: [webkit-dev] WebKit branch to support multiple VMs (e.g., Dart)

2011-12-05 Thread Zoltan Herczeg
It's not quite true that multiple languages are exposed to the web. One Turing-complete language is exposed, and any Turing-complete language can be compiled to any other Turing-complete language. The fact that some developers compile their favorite languages to JS doesn't mean that we should

Re: [webkit-dev] squirrefish extreme on Arm.

2011-11-26 Thread Zoltan Herczeg
Hi, WebKit supports ARM and Thumb2 instructions sets (called ARMv7). You can find them here (or in your own source code): http://trac.webkit.org/browser/trunk/Source/JavaScriptCore/assembler SquirrelFish Extreme is just a codename for the JavaScript JIT compiler (and Nitro is another). The JIT

Re: [webkit-dev] Removing ENABLE_SINGLE_THREADED and ENABLE_JSC_MULTIPLE_THREADS

2011-09-08 Thread Zoltan Herczeg
Hi, I like this idea. Multicore cpus are getting widespread even in the low-end devices nowadays. Regards, Zoltan Hi folks. To help move WebKit and JavaScriptCore forward, I'd like to remove old platform cruft that creates particular pain points for development. To that end, I'd like to

Re: [webkit-dev] JavaScripCore on Android

2011-06-30 Thread Zoltan Herczeg
Hi, ThreadSpecific contains the platform dependent TLS (Thread Local Storage) implementation for WebKit. In Platform.h: #if PLATFORM(ANDROID) #define WTF_USE_PTHREADS 1 ... Thus, Android should use pthread.h (Please check this line in your Source/JavaScriptCore/wtf/Platform.h) You could try

Re: [webkit-dev] parallel painting

2011-06-10 Thread Zoltan Herczeg
if the graphics layer is incredibly slow. In most WebKit ports we do not see very much time ... On Sat, Apr 3, 2010 at 10:32 PM, Zoltan Herczeg zherc...@inf.u-szeged.hu mailto:zherc...@inf.u-szeged.hu wrote: Hi, I am working on a parallel painting feature

[webkit-dev] Rounding issues on different platforms

2011-06-07 Thread Zoltan Herczeg
Hi, If you maintain some bots, and you saw rounding issues which makes 1px difference on let's say 32 and 64 bit environments for several layout tests, you may interested in this bug: https://bugs.webkit.org/show_bug.cgi?id=62204 I try to explain what exactly happens there, and it could be used

Re: [webkit-dev] More thoughts on cleaning up the root directory

2010-12-27 Thread Zoltan Herczeg
Like it. I only have a few questions: * Where would the build (WebKitBuild) directory would go? Perhaps a Build/ would fit in the root directory. * Some manual-tests belong to the regression tests, and some are belong to the performance test. Would be good to separate them. * I think the build

Re: [webkit-dev] Renaming directories

2010-12-18 Thread Zoltan Herczeg
LayoutTests = Tests That would kill the new Ttab is enough to enter the Tools directory feature :P I like the Ltab for generic tests. Cheers, Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org

Re: [webkit-dev] Renaming directories

2010-12-18 Thread Zoltan Herczeg
Hm, thinking a bit about it I realized these renamings could help the usability of the source code. I actually use a lot the WebKitBuild directory, and would be happy if it would be renamed to Build (= Btab), and Scripts could go to the root directory. In that case, LayoutTests = Tests would be be

Re: [webkit-dev] Stability problems involving Javascript GC

2010-12-17 Thread Zoltan Herczeg
On 6 December 2010 22:31, Zoltan Herczeg zherc...@inf.u-szeged.hu wrote: Crash in WTF::fastMalloc? Such things only happen if something overwrites memory areas belongs to the memory manager (i.e overwrites some bytes before or after a block returned by malloc). Try some valgrind

Re: [webkit-dev] Stability problems involving Javascript GC

2010-12-17 Thread Zoltan Herczeg
It is possible to add macros to the code to help valgrind know which areas are being used by a custom allocator.  (See VALGRIND_MALLOCLIKE_BLOCK and VALGRIND_FREELIKE_BLOCK, for example.)  I'm not sure if they're useful in this situation, but they're worth taking a look at. I see. That

Re: [webkit-dev] WebKit/Cairo build errors

2010-11-25 Thread Zoltan Herczeg
Hi, try webkit-help, which is the right place for such qestions. Regards, Zoltan Hi, I'm having problems building WebKit Cairo port (from 23/11 nightly). First it gives an error on RenderMediaControls.cpp which includes CoreGraphics/CoreGraphics.h and it shouldn't (right? this is part of

[webkit-dev] ANGLE

2010-08-13 Thread Zoltan Herczeg
Hi, ANGLE looks like a graphics helper library. Why it is placed in the root WebKit directory? Perhaps WebCore/platform/graphics or some kind of /3rparty directory would be better, wouldn't it? Regards, Zoltan ___ webkit-dev mailing list

Re: [webkit-dev] review queue crazy idea

2010-07-22 Thread Zoltan Herczeg
Patches sit in the queue for numerous reasons. Some of us used to scan the queue every day. But I've stopped doing that. Now I scan it more like once a week or two. There is no good way to find which patches might I have a chance of reviewing, so you end up spending 30 minutes just to

Re: [webkit-dev] SIL Open Font License and WebKit

2010-07-20 Thread Zoltan Herczeg
We can't really download them from stixfonts.org. Alex, wouldn't be possible to contact them and ask some help? Maybe they could offer us an acceptable solution. Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org

Re: [webkit-dev] How to integrate the SFX JIT for SH4 in the webkit svn tree.

2010-07-17 Thread Zoltan Herczeg
Hi, nice job, Haithem. This page explains how to contribute code to WebKit: http://webkit.org/coding/contributing.html You may find helpful the bugzilla entries for other JSC-JIT ports: ARM: https://bugs.webkit.org/show_bug.cgi?id=24986 MIPS: https://bugs.webkit.org/show_bug.cgi?id=30144 Both

Re: [webkit-dev] parallel controls in JavaScriptCore engine

2010-06-28 Thread Zoltan Herczeg
Hi, why don't you simply use a workaround? script function success() { alert(Success); continueTask(true); } function failure() { alert(Failure); continueTask(false); } function continueTask(success) { x= 10+1; } /script Zoltan Hello, As part of my project, we

Re: [webkit-dev] Function Property Names

2010-05-03 Thread Zoltan Herczeg
Hi, https://bugs.webkit.org/show_bug.cgi?id=32561 Zoltan Is there any way to map specific bytecode instruction instances to the position in the source code of the JavaScript code they correspond to? -- View this message in context:

Re: [webkit-dev] Announcing WebKit2

2010-04-09 Thread Zoltan Herczeg
Hi! Your wiki says: DrawingArea - an abstraction for a cross-process drawing area. Multiple drawing strategies are possible, the simplest is just a shared memory bitmap. Could you tell me more about it? I am working on a parallel painting feature (GraphicsContext commands can be forwarded to

Re: [webkit-dev] Coming Soon: new-run-webkit-tests

2010-04-09 Thread Zoltan Herczeg
We should make the new tool record the order so order-specific failures can be explored. A custom random generator would be enough. The seed can be given by a user or a just starts with a random value which is reported when the test finish. Much easier to share seed-revision pairs than

Re: [webkit-dev] parallel painting

2010-04-06 Thread Zoltan Herczeg
Hi, Thank all of you for your feedbacks! Let's continue this discussion in the bug report, I will provide more details there. Zoltan On Sat, Apr 3, 2010 at 9:32 PM, Zoltan Herczeg zherc...@inf.u-szeged.hu wrote: Hi, I am working on a parallel painting feature for WebKit (bug id: 36883

Re: [webkit-dev] parallel painting

2010-04-06 Thread Zoltan Herczeg
, style resolution, or javascript execution/bindings. -eric On Sat, Apr 3, 2010 at 10:32 PM, Zoltan Herczeg zherc...@inf.u-szeged.hu wrote: Hi, I am working on a parallel painting feature for WebKit (bug id: 36883). Basically it records the painting commands on the main thread, and replay

[webkit-dev] parallel painting

2010-04-03 Thread Zoltan Herczeg
Hi, I am working on a parallel painting feature for WebKit (bug id: 36883). Basically it records the painting commands on the main thread, and replay them on a painting thread. The gain would be that the recording operation is cheap. Currently it is Qt specific, but I could make it more platform

Re: [webkit-dev] Questions regarding memory debugging

2010-03-10 Thread Zoltan Herczeg
But in cases like the SharedBuffer one, there is no mystery about who allocated the memory. The mystery is typically who is holding on to a reference to it. I have a technique to capture ref/deref problems with gdb. When the object is created (inside the object constructor), I just put a

Re: [webkit-dev] Why I'm reviewing patches outside my area (and why you should too)

2010-03-09 Thread Zoltan Herczeg
Hi, It's also a big help when peers (which aren't necessarily WebKit reviewers) look over it and give review-style feedback as well. Especially when said peers know more about that code than any of the official reviewers. Is that really help? Sometimes when a patch looks good to me, it

Re: [webkit-dev] parallel rendering in WebKit

2010-02-20 Thread Zoltan Herczeg
Hi, thanks for all of your for your help. I would be worried about correctness - if painting is not complete by the time the paint method returns, then you could get flashes of intermediate states showing up onscreen. We plan to do the painting on a background image. When all the painting

Re: [webkit-dev] ARM JIT for WinCE

2010-01-08 Thread Zoltan Herczeg
Hi, the dateProtoFuncGetTimezoneOffset does not use the argList argument, while functionPrint does. Perhaps passing this argument is still not yet WinCE compatible. ArgList contains a pointer to the arguments (JSValue pointers), and the length of the arguments. This structure is 8 bytes on 32 bit

Re: [webkit-dev] ARM JIT for WinCE

2010-01-07 Thread Zoltan Herczeg
Hi Patrick, hm, I feel I found something. Please have a look at JavaScriptCore/jit/JITOpcodes.cpp : privateCompileCTIMachineTrampolines. The second one, when JSVALUE32_64 is disabled. If JIT_OPTIMIZE_NATIVE_CALL is enabled, a specialized code is generated to call native builtin functions (like

[webkit-dev] TARGET_OS_EMBEDDED

2009-12-04 Thread Zoltan Herczeg
Hi, it would be a great to have a macro in WebKit, which would be enabled on embedded systems. We could replace macros like PLATFORM(SYMBIAN) in TextCodecQt.cpp to this new macro. However, TARGET_OS_EMBEDDED macro enables WTF_PLATFORM_IPHONE. Well, not only symbian and iPhone exist in embedded

[webkit-dev] improving String::append()

2009-12-03 Thread Zoltan Herczeg
Hi, according to my measurements, a large chunk of WebKit memory consumption comes from WebCore::TextResourceDecoder::decode (loader/TextResourceDecoder.cpp:818) which calls String::append (String.cpp:82). The comment there says: // FIXME: This is extremely inefficient. I would volunteer to

Re: [webkit-dev] jit for arm

2009-11-17 Thread Zoltan Herczeg
Hi, seems the original mail was sent to both webkit-dev and webkit-help. My reply was on webkit-help, and the discussion continued there. https://lists.webkit.org/pipermail/webkit-help/2009-November/000380.html Perhaps we should clarify better the purpose of these mailing lists, since if people

Re: [webkit-dev] JIT for arm is dependant on gcc

2009-10-21 Thread Zoltan Herczeg
Hi, these entry/leave functions are implemented in assembly for all ports. It is faster this way. (Previously, the jit generated these functions, but the reviewers convinced us to do this way). External .asm files would be a nightmare, since we have to create (and maintain) the build rules for

Re: [webkit-dev] JIT for arm is dependant on gcc

2009-10-21 Thread Zoltan Herczeg
as I haven't used 3 parameter assembler language before although I'm sure I could do this with a couple of hours research. Can you maybe show me how to get the jit to generate this for this toolchain? Jason. -Original Message- From: Zoltan Herczeg [mailto:zherc...@inf.u-szeged.hu

Re: [webkit-dev] jit, unordered compare

2009-10-16 Thread Zoltan Herczeg
Hi fortunately, no, I don't need double branch here. cmpvs reg0, reg0 is a conditional instruction, which only executes if the v flag is set. My proposal would be to add a new DoubleCondition called DoubleEqualOrNAN, or something similar to clarify what we expect from the conditional branch.

[webkit-dev] jit, unordered compare

2009-10-12 Thread Zoltan Herczeg
Hi, My stougle with USE_JSVALUE32_64 still continues on ARM. In emit_op_jfalse, there is a comparison here (fpRegT0 contains 0.0): addJump(branchDouble(DoubleEqual, fpRegT0, fpRegT1), target + 2); In x86, if either operand is NaN, the zero flag is set by definition (ucomisd instruction). I have

Re: [webkit-dev] jit, unordered compare

2009-10-12 Thread Zoltan Herczeg
a BEQ or BNE is used afterwards) or to test for unorderedness (in the V flag). Gavin, do you have any ideas here? Geoff On Oct 12, 2009, at 4:05 AM, Zoltan Herczeg wrote: Hi, My stougle with USE_JSVALUE32_64 still continues on ARM. In emit_op_jfalse, there is a comparison here (fpRegT0

[webkit-dev] compileOpCallSetupArgs

2009-10-07 Thread Zoltan Herczeg
Hi, I am not sure this is a bug, so I am curios about your opinion. Currently, I am trying to enable JSVALUE32_64 on ARM. First step, as usual, with all optimizations disabled. Unfortunately, I got a crash. If JIT_OPTIMIZE_CALL is disabled, callee is loaded to regT1 and regT2, while if enabled,

Re: [webkit-dev] Leak reports during shutdown

2009-09-29 Thread Zoltan Herczeg
Hi Kevin, WebKit approach is NOT to free memory before quit to make the quit process as fast as possible. The memory manager should free the unfreed objects. However, this approach makes really hard to find the real leaks (which are unreferenced objects). In my experince the unfreed (non-leak)

Re: [webkit-dev] [webkit-help] webkit cross compilation error

2009-09-23 Thread Zoltan Herczeg
Hi, -m64 means: generate code for 64 bit machines. ARM is not a 64 bit architecture. Does your Ubuntu use a x86-64 kernel? Which WebKit platform do you use? Perhaps a mechanism detected your architecture and pass this flag to WebKit to make optimized code for your machine. Zoltan hi, i'm

Re: [webkit-dev] New marking model for GC collected objects

2009-09-02 Thread Zoltan Herczeg
Darin has already submitted a big patch to the bug report, which hopefully solve all of these issues. Zoltan In WTF_USE_JSVALUE32 DateInstance needs to override createStrucutre to remove the HasDefaultMark bit --Oliver On Sep 2, 2009, at 6:54 AM, Zoltan Herczeg wrote: Hi Geoff

Re: [webkit-dev] New marking model for GC collected objects

2009-09-01 Thread Zoltan Herczeg
Hi Oliver, it seems on ARM using WTF_USE_JSVALUE32, the internal value of a date object is sometimes freed by the garbage collector. More specifically: The double (millisecond) representation of a date object (returned by a new Date expression) is stored in JSWrapperObject: m_internalValue. This

Re: [webkit-dev] Can someone give current status for Webkit/GTK build under mingw

2009-08-05 Thread Zoltan Herczeg
Hi, Im not sure if Im asking the right place yes :), such qestions should go to webkit-help Cheers, Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev

Re: [webkit-dev] freeing static variables

2009-08-04 Thread Zoltan Herczeg
will help to the leak hunters in the future. Cheers, Zoltan On Thursday 30 July 2009 02:55:18 am Zoltan Herczeg wrote: Hi, any thoughts on this? I hope my qestion was clear :) I would like to pack the static declarations into wrapper classes, so we can add platform and/or compilation mode (debug

Re: [webkit-dev] freeing static variables

2009-07-30 Thread Zoltan Herczeg
Hi, any thoughts on this? I hope my qestion was clear :) I would like to pack the static declarations into wrapper classes, so we can add platform and/or compilation mode (debug/release) dependent functionality to all static variables (i.e: freeing them on exit). Zoltan Hi all, Valgrind

[webkit-dev] freeing static variables

2009-07-29 Thread Zoltan Herczeg
Hi all, Valgrind reports a lot of memory leaks when QtLauncher quits, because many static local variables are not freed. I did a little research and realized there is no consistent way to define static variables in webkit: WebCore/css/CSSSelector.cpp: CSSSelector::extractPseudoType() using a

[webkit-dev] Calling gc::collect() before the program exits

2009-07-27 Thread Zoltan Herczeg
Hi, by default, gc::collect() is triggered by a timer at regular intervals. In QtLauncher, gc::collect() is not called in any other way, so the remaining JS objects cause memory leaks when QtLauncher exits. Although this approach may not be considered a bug, since the program soon quits, I would

Re: [webkit-dev] Iterating SunSpider

2009-07-06 Thread Zoltan Herczeg
Hi, Can future versions of the SunSpider driver be made so that they won't become irrelevant over time? I feel the weighting is more of an issue here than the total runtime. Eventually some tests become dominant, and the gain (or loss) on them almost determine the final results. Besides,

[webkit-dev] JavaScriptCore enhancements

2009-07-03 Thread Zoltan Herczeg
Hi, we hope the general arm-jit will soon go to mainline, so we could have enough time to countinue our work on other JSC enhancements. We would like to hear your opinion about them (Are they still valid? Has someone else already been working on it? Which one is important for you?): - runtime

Re: [webkit-dev] ARM JIT and related issues

2009-06-17 Thread Zoltan Herczeg
Hi, 1) The armv7 port is separate from the armv6 work, and uses the thumb2 instruction set. Both ports are (I hope!) useful. We hope it as well. 2) We would have liked to let the community know about the arm v7 port sooner. Unfortunately, we were not at liberty to disclose it until the

Re: [webkit-dev] Building WebKit on ARM

2009-06-17 Thread Zoltan Herczeg
Hi, 1.Want to know the build instructions for building WebKit on OMAP 3530? WebKit is written in c++, so you don't need to do anything special for your CPU. Just run WebKitTools/Scripts/build-webkit 2.Does the WebKit source need to be changed(makefile) so that it builds for OMAP 3530? If

[webkit-dev] Name of a JS function

2009-06-16 Thread Zoltan Herczeg
Hi, how can I extract the name of a JS function in JIT.cpp? Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev

Re: [webkit-dev] Name of a JS function

2009-06-16 Thread Zoltan Herczeg
On Jun 16, 2009, at 3:55 AM, Zoltan Herczeg wrote: Hi, how can I extract the name of a JS function in JIT.cpp? Zoltan ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev

Re: [webkit-dev] arm jit

2009-06-11 Thread Zoltan Herczeg
Hi guys at Apple, it looks we are in the way of the train. You have plans, we don't know about them, you have commit rights, we don't, so the tides are against us. Hints on the mailing lists are scarce, although a year ago someone from you asked whether others are interested in design

Re: [webkit-dev] arm jit

2009-06-11 Thread Zoltan Herczeg
If you're interested in review or commit rights, they're granted based on a track record of good work, good judgement, and good collaboration. You can read more about the policy here: http://webkit.org/coding/commit-review-policy.html . Please work on your collaboration skills. Right now,

Re: [webkit-dev] Memory usage for Webkit

2009-06-11 Thread Zoltan Herczeg
Hi, http://webkit.sed.hu/node/15 As you can see on the charts there, you should consider the whole environment not just WebKit alone. Large amount of resources are allocated by other libs as well. Zoltan On 2009-06-11, at 12:50, James Howlett wrote: Hi, Is there any plan to reduce the

Re: [webkit-dev] stack alignment bug

2009-06-04 Thread Zoltan Herczeg
structure or point to double is not aligned and I'm still trying to find where they are. I'm not sure how the fake stack would be, would you mind explains a bit more? Did you face same problem? Thanks also for your articles that gives new ideas. rgds joe --- On Wed, 6/3/09, Zoltan Herczeg

Re: [webkit-dev] stack alignment bug

2009-06-04 Thread Zoltan Herczeg
what you're envisaging 'fake_sp' would be used for. I've just landed a patch to move the pushes pops in wrapper functions, and to switch put transition realloc to use a regular function call, hopefully this tidies things up a little. cheers, G. On Jun 4, 2009, at 1:19 AM, Zoltan Herczeg

Re: [webkit-dev] stack alignment bug

2009-06-03 Thread Zoltan Herczeg
Hi, true, some architectures have strict policies for stack handling. Perhaps the worst one is PowerPC with its organized stack frame (back chains, pre-defined register save areas, etc). I think a fake stack pointer for JIT can solve the x86 compatibility problem. 1) allocate enough aligned

[webkit-dev] Math.floor(expr1/expr2)

2009-05-28 Thread Zoltan Herczeg
Hi, we plans to make a super instruction for floor(expr1/expr2), which is an integer division (if both operands are integer numbers). We hope it would be benficial for embedded systems. I think the implementation would be similar to the JS apply() function: the fast case detects whether both

Re: [webkit-dev] How to dump SquirrelFish opcode and machine code

2009-05-27 Thread Zoltan Herczeg
Hi, How to dump SquirrelFish opcode and machine code? Here is what I would like to do, for each JS file that WebCore passes to SquirrelFish, configure SquirrelFish to dump opcode and machine code. Thank you for any tips. I am not sure you can do SF byte code dump out of the box since SF

Re: [webkit-dev] Webkit JavaScript question

2009-05-22 Thread Zoltan Herczeg
codes, no interpreter. http://code.google.com/apis/v8/design.html#mach_code Thank you. On Thu, May 21, 2009 at 2:12 PM, Zoltan Herczeg zherc...@inf.u-szeged.hu wrote: Hi, The JavaScript engine does 3 steps: 1) Parse JS files 2) Generate SquirellFish byte code (ByteCodeGenerator.h is part

Re: [webkit-dev] Webkit JavaScript question

2009-05-22 Thread Zoltan Herczeg
Hi, I don't think so. It is not worth to do it on a desktop pc since interpreter is always slower than JIT. However, the story is different for embedded systems, when they enter low-memory mode. We made some experiments before, and it seems possible to switch between jit and interpreter, but I am

Re: [webkit-dev] Webkit JavaScript question

2009-05-21 Thread Zoltan Herczeg
Hi, The JavaScript engine does 3 steps: 1) Parse JS files 2) Generate SquirellFish byte code (ByteCodeGenerator.h is part of it) 3) Compile SF byte code to machine code by its JIT compiler (optional) The last step depends on the architecture (supported or not) and C++ compiler directives. If JIT

Re: [webkit-dev] random seg fault on MIPS platform

2009-05-08 Thread Zoltan Herczeg
Hi, I don't know anything about MIPS architecture (only x86, ARM and PowerPC), but we have experienced similar things on ARM, until we have found the gcc's __clear_cache(void* begin, void* end) function. It calls a kernel utility, which flushes out the data cache (some mrc instructions can only

Re: [webkit-dev] Nitro-Extreme branch

2009-05-07 Thread Zoltan Herczeg
Hi, I have made some measurements on ARM. You can read the results on our blog site: http://webkit.sed.hu/node/14 Zoltan Right now, the branch is about even with trunk on SunSpider. Geoff On May 5, 2009, at 6:11 AM, Zoltan Herczeg wrote: Hi, we have noticed that there is a new

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