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[Bug rtl-optimization/40761] IRA memory hog for insanely nested loops
- From: "vmakarov at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 19 Jan 2012 20:42:57 +0000
- Subject: [Bug rtl-optimization/40761] IRA memory hog for insanely nested loops
- Auto-submitted: auto-generated
- References: <bug-40761-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40761
--- Comment #17 from Vladimir Makarov <vmakarov at redhat dot com> 2012-01-19 20:42:57 UTC ---
The problem was in building CFG loops which took the most of time. CFG
loops were built even if we don't use regional allocation as for -O0.
I'll send a patch soon. It is not small because IRA in any case uses one
region with CFG loop representing the whole function.