[Bug c++/53226] memory consumption for heavy template instantiations increased massively

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53226

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-08 12:03:55 UTC ---
Ugh, remove_prop_source_from_use can remove stmts while prev iterator points to
them.  This has been buggy before, but didn't result in endless loop.
I guess instead of using prev/prev_initialized, the loop could gimple_set_uid
(stmt, 0) the stmts it is about to process and gimple_set_uid (stmt, 1) stmts
that don't need to be processed again, then gsi = prev; could be just replaced
by doing gsi_prev (&gsi); enough times to reach start of bb or a stmt with uid
1.