JIT Compiler

How JIT Compilers are different from Normal compilers? I am talking
about JIT Compiler as general not .NET or Java JIT compiler .

Any link or Docs?
:-(

Thanks and Regards..

Shishir Kumar Mishra
Agni Software (P) Ltd.
www.agnisoft.com

Daniel
Thu Jan 22 00:27:33 CST 2004

A JIT compiler, in general, compiles code as its used, instead of compiling
it before use or interpreting source. Hence the term Just In Time.
In the .NET and java compilers, atleast(although I don't know for sure if
the term requires this or not), JITing is the compilation of a bytecode
language into native code as the code is needed(at method granularity
usually). I suppose the term could be expanded to source code to machine
code at runtime, although I don't know of any systems that use such a
technique.
"Shishir Kumar Mishra" <shishir@agnisoft.com> wrote in message
news:erzCJ9K4DHA.1644@TK2MSFTNGP10.phx.gbl...
>
> How JIT Compilers are different from Normal compilers? I am talking
> about JIT Compiler as general not .NET or Java JIT compiler .
>
> Any link or Docs?
> :-(
>
> Thanks and Regards..
>
> Shishir Kumar Mishra
> Agni Software (P) Ltd.
> www.agnisoft.com
>
>

discussion
Thu Jan 22 02:15:46 CST 2004

How does this granularity differ for propertys ?

Does it just just the get_ when thats called or would it JIT the set_ AND
get_ for that first prop access regardless of read or write?


"Daniel O'Connell" <onyxkirx@--NOSPAM--comcast.net> wrote in message
news:ehexSDL4DHA.1816@TK2MSFTNGP12.phx.gbl...
> A JIT compiler, in general, compiles code as its used, instead of
compiling
> it before use or interpreting source. Hence the term Just In Time.
> In the .NET and java compilers, atleast(although I don't know for sure if
> the term requires this or not), JITing is the compilation of a bytecode
> language into native code as the code is needed(at method granularity
> usually). I suppose the term could be expanded to source code to machine
> code at runtime, although I don't know of any systems that use such a
> technique.
> "Shishir Kumar Mishra" <shishir@agnisoft.com> wrote in message
> news:erzCJ9K4DHA.1644@TK2MSFTNGP10.phx.gbl...
> >
> > How JIT Compilers are different from Normal compilers? I am talking
> > about JIT Compiler as general not .NET or Java JIT compiler .
> >
> > Any link or Docs?
> > :-(
> >
> > Thanks and Regards..
> >
> > Shishir Kumar Mishra
> > Agni Software (P) Ltd.
> > www.agnisoft.com
> >
> >
>
>

Daniel
Thu Jan 22 02:17:50 CST 2004


<discussion@discussion.microsoft.com> wrote in message
news:%237CbF8L4DHA.360@TK2MSFTNGP12.phx.gbl...
> How does this granularity differ for propertys ?
>
> Does it just just the get_ when thats called or would it JIT the set_ AND
> get_ for that first prop access regardless of read or write?
>
I don't know, honestly. Generically get_ & set_ *are* seperate methods and
the JITer probably treats them like any other method, but I don't know for
sure.

>
> "Daniel O'Connell" <onyxkirx@--NOSPAM--comcast.net> wrote in message
> news:ehexSDL4DHA.1816@TK2MSFTNGP12.phx.gbl...
> > A JIT compiler, in general, compiles code as its used, instead of
> compiling
> > it before use or interpreting source. Hence the term Just In Time.
> > In the .NET and java compilers, atleast(although I don't know for sure
if
> > the term requires this or not), JITing is the compilation of a bytecode
> > language into native code as the code is needed(at method granularity
> > usually). I suppose the term could be expanded to source code to machine
> > code at runtime, although I don't know of any systems that use such a
> > technique.
> > "Shishir Kumar Mishra" <shishir@agnisoft.com> wrote in message
> > news:erzCJ9K4DHA.1644@TK2MSFTNGP10.phx.gbl...
> > >
> > > How JIT Compilers are different from Normal compilers? I am
talking
> > > about JIT Compiler as general not .NET or Java JIT compiler .
> > >
> > > Any link or Docs?
> > > :-(
> > >
> > > Thanks and Regards..
> > >
> > > Shishir Kumar Mishra
> > > Agni Software (P) Ltd.
> > > www.agnisoft.com
> > >
> > >
> >
> >
>
>

discussion
Thu Jan 22 03:00:31 CST 2004

What about INLINING, since the IL size of greater than 32 I belive doesnt
get inlined, say I have 4 methods all small enuf to be inlined but called in
a nested heirachy like A->calls B->calls C->calls D and so on, when these
methods are all JITted, they all add up to greater than the inline size of
32. Does that mean A is NOT inlined becuase of all the inlined calls make
it too large?




"Daniel O'Connell" <onyxkirx@--NOSPAM--comcast.net> wrote in message
news:%23nc%236AM4DHA.1868@TK2MSFTNGP10.phx.gbl...
>
> <discussion@discussion.microsoft.com> wrote in message
> news:%237CbF8L4DHA.360@TK2MSFTNGP12.phx.gbl...
> > How does this granularity differ for propertys ?
> >
> > Does it just just the get_ when thats called or would it JIT the set_
AND
> > get_ for that first prop access regardless of read or write?
> >
> I don't know, honestly. Generically get_ & set_ *are* seperate methods and
> the JITer probably treats them like any other method, but I don't know for
> sure.
>
> >
> > "Daniel O'Connell" <onyxkirx@--NOSPAM--comcast.net> wrote in message
> > news:ehexSDL4DHA.1816@TK2MSFTNGP12.phx.gbl...
> > > A JIT compiler, in general, compiles code as its used, instead of
> > compiling
> > > it before use or interpreting source. Hence the term Just In Time.
> > > In the .NET and java compilers, atleast(although I don't know for sure
> if
> > > the term requires this or not), JITing is the compilation of a
bytecode
> > > language into native code as the code is needed(at method granularity
> > > usually). I suppose the term could be expanded to source code to
machine
> > > code at runtime, although I don't know of any systems that use such a
> > > technique.
> > > "Shishir Kumar Mishra" <shishir@agnisoft.com> wrote in message
> > > news:erzCJ9K4DHA.1644@TK2MSFTNGP10.phx.gbl...
> > > >
> > > > How JIT Compilers are different from Normal compilers? I am
> talking
> > > > about JIT Compiler as general not .NET or Java JIT compiler .
> > > >
> > > > Any link or Docs?
> > > > :-(
> > > >
> > > > Thanks and Regards..
> > > >
> > > > Shishir Kumar Mishra
> > > > Agni Software (P) Ltd.
> > > > www.agnisoft.com
> > > >
> > > >
> > >
> > >
> >
> >
>
>

Shishir
Thu Jan 22 03:37:08 CST 2004


Thanks Daniel,

I got the stuffs at following address
http://www.developer.com/net/cplus/article.php/1366921


regards..
Shishir Kumar Mishra
Agni Software (P) Ltd.
www.agnisoft.com

"Daniel O'Connell" <onyxkirx@--NOSPAM--comcast.net> wrote in message
news:ehexSDL4DHA.1816@TK2MSFTNGP12.phx.gbl...
> A JIT compiler, in general, compiles code as its used, instead of
compiling
> it before use or interpreting source. Hence the term Just In Time.
> In the .NET and java compilers, atleast(although I don't know for sure if
> the term requires this or not), JITing is the compilation of a bytecode
> language into native code as the code is needed(at method granularity
> usually). I suppose the term could be expanded to source code to machine
> code at runtime, although I don't know of any systems that use such a
> technique.
> "Shishir Kumar Mishra" <shishir@agnisoft.com> wrote in message
> news:erzCJ9K4DHA.1644@TK2MSFTNGP10.phx.gbl...
> >
> > How JIT Compilers are different from Normal compilers? I am talking
> > about JIT Compiler as general not .NET or Java JIT compiler .
> >
> > Any link or Docs?
> > :-(
> >
> > Thanks and Regards..
> >
> > Shishir Kumar Mishra
> > Agni Software (P) Ltd.
> > www.agnisoft.com
> >
> >
>
>