Re: question about if_marked construct

Interesting. My first reaction is that this is an invalid use of the garbage collector. I think there is really only one valid function that can be used as an if_marked function: one which checks ggc_marked_p on the structure. Then how about tree_map_base_marked_p, the if_marked functi

Re: question about if_marked construct

On Mon, Jul 5, 2010 at 1:54 PM, Tom de Vries wrote: >> Interesting.  My first reaction is that this is an invalid use of the >> garbage collector.  I think there is really only one valid function >> that can be used as an if_marked function: one which checks >> ggc_marked_p on the structure. > > >

Re: question about if_marked construct

Hi, The tree_map_base_marked_p checks ggc_marked_p on the from field. During ggc_scan_cache_tab, if the from field is live, also the to field is marked live. I wrote some code to do sanity testing and found a similar scenario as before: - a register attribute is not marked live during roo

random access memory cycle runs ten times faster on win32 platform than on linux - strange

Hi, I'm new on this list, and I hope I'm asking my question at right place. I tried to test the bandwidth of a DDR3 memory in random access mode, and I wrote a simple code for this purpose. I compiled it with gcc-4.1.1 for Linux and with mingw-4.2.1-sjlj for Windows. After I tried the executables

Re: random access memory cycle runs ten times faster on win32 platform than on linux - strange

Quoting Béla MIHALIK : If I compile it with mingw32 compiler, or VisualC++ then it gives good result. Here are my results for memory bandwith test: Linux: 373.574249 MB/s Win32: 4468.297363 MB/s I don't think that has anything to do with the code generated by the compiler; rather, I think

Delegating constructors patch

Hi, I'd like to know if there's plans to merge Pedro Lamarão's implementation of delegating constructors into trunk. While we're at it, is there someone implementing C++0x's inheriting constructors? Regards, Rodolfo Lima

[GIMPLE] Local variables

Hello all, I am trying to get an access to local variables of a function thanks to the GIMPLE representation. When I read the dump file after the CFG pass, I can see a new temporary variable added. For example with the identity function I would like to get an access to the uid of this variabl

Attributes

Hey GCC devs, My name is Sean Hunt and I'm currently refactoring the attribute-handling system in clang, in order to better support C++0x[1] attributes and make attributes in general much easier to follows. One of the major issues I'm having is that there are a number of cases where concessio

Re: random access memory cycle runs ten times faster on win32 platform than on linux - strange

On 05/07/2010 19:43, Joern Rennecke wrote: > Quoting Béla MIHALIK : > >> If I compile it with mingw32 compiler, or VisualC++ then it gives good >> result. >> >> Here are my results for memory bandwith test: >> >> Linux: 373.574249 MB/s Win32: 4468.297363 MB/s > > I don't think that has anything

[vect, gccint] Mistake about Vector-specific attributes?

Hi, In gccint, 7.2.3.3 Vector-specific attributes, there are two items talking about vect_int_mult: vect_int_mult Target supports a vector widening multiplication of short operands into an int result, or supports promotion (unpacking) from short to int and a non-widening multiplication of int