[Bug middle-end/39157] Code that compiles fine in 1GB of memory with 4.1.2 requires > 20GB in 4.2.* and higher

[jakub at gcc dot gnu dot org]

------- Comment #7 from jakub at gcc dot gnu dot org  2009-02-12 12:16 -------
Adding -fno-move-loop-invariants to the x86_64 mentioned options results in
VIRT memory topping around 1224m (only because of IRA, before RA it never went
above 1GB).  Seems it is really the loop2_invariant pass that ate 28GB of RAM.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39157