------- Comment #61 from rguenther at suse dot de 2008-06-11 08:07 ------- Subject: Re: [4.2 Regression] points-to analysis slow and memory hungry
On Tue, 10 Jun 2008, giovannibajo at libero dot it wrote: > ------- Comment #60 from giovannibajo at libero dot it 2008-06-10 17:26 > ------- > If a knowledgable GCC developer could suggest *any* workaround at -O1 for this > bug in 4.2 (including disabling whatever alias analysys causes the problem), > it > might be proposed as a fix within distros at least. You can try if --param max-fields-for-field-sensitive=0 improves the situation. Other than that, try, in tree-ssa-structalias.c:create_variable_info_for remove the make_constraint_from_escaped and make_constraint_to_escaped calls for the is_global cases. Note that you need to adjust find_what_p_points_to to include escaped variables if escaped_id is set in the solution and that call clobbering will need similar adjustments (and remember escaped_id includes all globals implicitly). The problem with the sipQt testcase is that it has 10000s of global vars it creates constraints for, even though they are unused. Richard. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30052 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
