Re: loop optimization in gcc

2009-10-11 Thread Ian Lance Taylor
sandeep soni writes: > I have been studying the gcc code lately as part of my project.I have > got info from this mailing list about CFG and DFG information.I want > to know how gcc uses this information to perform loop optimization? > Does it Follow any particular algorithm or in particular what

gcc-4.3-20091011 is now available

2009-10-11 Thread gccadmin
Snapshot gcc-4.3-20091011 is now available on ftp://gcc.gnu.org/pub/gcc/snapshots/4.3-20091011/ and on various mirrors, see http://gcc.gnu.org/mirrors.html for details. This snapshot has been generated from the GCC 4.3 SVN branch with the following options: svn://gcc.gnu.org/svn/gcc/branches

Re: delete dead feature branches?

2009-10-11 Thread Ben Elliston
On Fri, 2009-09-25 at 16:55 +, Joseph S. Myers wrote: > Do we believe any future conversion to another version control system > (that might have a more structured notion of what is a branch than it > simply being a directory used in a certain way) would continue to make the > history of suc

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Paolo Carlini
Jakub Jelinek wrote: > The above mentioned patch adds support for raw strings and u8. > Indeed. I have just committed the below too. Paolo. // 2009-10-11 Paolo Carlini * htdocs/projects/cxx0x_status.html: Unicode string literals are unsupported in 4.4. Index: ht

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Jakub Jelinek
On Sun, Oct 11, 2009 at 10:42:41AM -0700, Andrew Pinski wrote: > On Sun, Oct 11, 2009 at 10:36 AM, Paolo Carlini > wrote: > > Hi again, > >> To my best knowledge the feature is not implemented at all, thus a bug > >> in the C++0x Support page. > > Following up to my previous message, I figured out

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Andrew Pinski
On Sun, Oct 11, 2009 at 10:36 AM, Paolo Carlini wrote: > Hi again, >> To my best knowledge the feature is not implemented at all, thus a bug >> in the C++0x Support page. > Following up to my previous message, I figured out a probable reason for > the mistake: actually we *do* have a patch impleme

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Andrew Pinski
On Sun, Oct 11, 2009 at 7:31 AM, Paolo Carlini wrote: > Hi Beman >> http://gcc.gnu.org/projects/cxx0x.html shows Unicode string literals (N2442) >> as >> being supported in gcc 4.4. But this little program fails to compile: >> >> #include >> int main() >> { >>   std::cout << u8"foo" << std::endl

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Paolo Carlini
Hi again, > To my best knowledge the feature is not implemented at all, thus a bug > in the C++0x Support page. Following up to my previous message, I figured out a probable reason for the mistake: actually we *do* have a patch implementing the feature, which however has not been applied yet to mai

Re: building LTO plugin fails for x86_64-unknown -linux-gnu

2009-10-11 Thread Richard Guenther
On Sun, Oct 11, 2009 at 6:21 PM, Richard Guenther wrote: > On Sun, Oct 11, 2009 at 6:04 PM, Rainer Emrich > wrote: >> -BEGIN PGP SIGNED MESSAGE- >> Hash: SHA1 >> >> libtool: link: gcc -shared  .libs/lto-plugin.o >> - >> -L/SCRATCH/tmp.dYgZv17836/Linux/x86_64-unknown-linux-gnu/openSUSE_10.

Re: building LTO plugin fails for x86_64-unknown -linux-gnu

2009-10-11 Thread Richard Guenther
On Sun, Oct 11, 2009 at 6:04 PM, Rainer Emrich wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > libtool: link: gcc -shared  .libs/lto-plugin.o > - > -L/SCRATCH/tmp.dYgZv17836/Linux/x86_64-unknown-linux-gnu/openSUSE_10.3/install/lib64 is there a libiberty in that path? > - -lelf > - >

C++ Plugins

2009-10-11 Thread Terrence Miller
(Version 4.5.0) There are plugin callbacks which trigger at the end of processing types and C++ functions, but I can not find a clean way for plugin code to notice a top-level variable declaration. I'm hoping that the answer does not require the plugin shared library to bind to global symbols

building LTO plugin fails for x86_64-unknown -linux-gnu

2009-10-11 Thread Rainer Emrich
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 libtool: link: gcc -shared .libs/lto-plugin.o - -L/SCRATCH/tmp.dYgZv17836/Linux/x86_64-unknown-linux-gnu/openSUSE_10.3/install/lib64 - -lelf - -L/SCRATCH/tmp.dYgZv17836/Linux/x86_64-unknown-linux-gnu/openSUSE_10.3/gcc-4.5.0/gcc-4.5.0/libiberty/pic - -

Re: Escape the unnecessary re-optimization in automatic parallelization.

2009-10-11 Thread Li Feng
Hi Joern, On Sat, Oct 10, 2009 at 5:27 PM, Joern Rennecke wrote: > Quoting Li Feng : >> >> So my question is, >> >> 1. Is this necessary/correct if we want to escape the re-optimization for >> the >> first few passes before tree-parloop.c and continue the optimization >> passes >> after it for th

loop optimization in gcc

2009-10-11 Thread sandeep soni
Hi All, I have been studying the gcc code lately as part of my project.I have got info from this mailing list about CFG and DFG information.I want to know how gcc uses this information to perform loop optimization? Does it Follow any particular algorithm or in particular what are the different tec

Re: [g++ 4.4] Unicode string literal support?

2009-10-11 Thread Paolo Carlini
Hi Beman > http://gcc.gnu.org/projects/cxx0x.html shows Unicode string literals (N2442) > as > being supported in gcc 4.4. But this little program fails to compile: > > #include > int main() > { > std::cout << u8"foo" << std::endl; > } > ... > Is this a bug in gcc? A bug in the C++0x Support

[g++ 4.4] Unicode string literal support?

2009-10-11 Thread Beman Dawes
http://gcc.gnu.org/projects/cxx0x.html shows Unicode string literals (N2442) as being supported in gcc 4.4. But this little program fails to compile: #include int main() { std::cout << u8"foo" << std::endl; } C:\gcc>bin\g++ -std=gnu++0x u8-literal.cpp u8-literal.cpp: In function 'int main()':