FRE may run out of memory

[dxq]

Richard Biener-2 wrote
> On Fri, Feb 14, 2014 at 3:50 AM, dxq <

> ziyan01@

> > wrote:
> 
> What compiler version did you check?  I think that 4.8 has improvements
> for 1. and 2. (SMS is unmaintained).  Note that we only spent time to
> make -O1 behave sanely with extremely large functions.
> 
> Finally I'd suggest you open a bugreport and attach a testcase to it
> that exposes the issues you list.
> 
> Richard.

hi Richard,

We are working on gcc-4.7.1.  seems that these issues have been fixed in
gcc-4.8.3.

BTW, we notice that Obstack is used in LIM for memory management, which is
really a nice way, 
and also, we used Ostack to solve the GGC problem in our SMS-UNROLL
framework, 
we put all backup into the  Obstack, so it's safe now. 

http://gcc.1065356.n5.nabble.com/A-GGC-related-question-td988400.html
 
Thanks!

danxiaoqiang



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