[Bug tree-optimization/27004] [4.1/4.2/4.3 Regression] Insane amount of memory needed at -O1 and above because of salias and large switch

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2007-11-04 13:38 -------
Created an attachment (id=14483)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14483&action=view)
patch

Patch to limit the number of SFTs created per function.  The limit of 1000 SFTs
brings down memory usage to 1.3GB, a limit of 500 to 1.2GB, a limit of 100
results in 970MB, a limit of
zero 954MB.

So there's still something taking 400MB more memory than in 4.0.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27004