hi all, We found that gcc would run out of memory on Windows when compiling a *big* function (100000 lines).
More investigation shows that gcc crashes at the function *compute_avail*, in tree-fre pass. *compute_avail* collects information from basic blocks, so memory is allocated to record informantion. However, if there are huge number of basic blocks, the memory would be exhausted and gcc would crash down, especially for Windows PC, only 2G or 4G memory generally. It's ok On linux, and *compute_avail* allocates *2.4G* memory. I guess some optimization passes in gcc like FRE didn't consider the extreme case. When disable tree-fre pass, gcc crashes at IRA pass. I will do more investigation about that. Any suggestions? Thanks! danxiaoqiang -- View this message in context: http://gcc.1065356.n5.nabble.com/FRE-may-run-out-of-memory-tp1009578.html Sent from the gcc - patches mailing list archive at Nabble.com.
