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 -- View this message in context: http://gcc.1065356.n5.nabble.com/FRE-may-run-out-of-memory-tp1009578p1012489.html Sent from the gcc - patches mailing list archive at Nabble.com.