https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55442
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jason at gcc dot gnu.org
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to David Fendrich from comment #0)
> My guess is that this has something to do with unlimited memoization?
Yes.
GGC memory Garbage Freed
Leak Overhead Times
--------------------------------------------------------------------------------------------------------------------------------------------
[...]
cp/constexpr.c:1761 (cxx_eval_call_expression) 0 : 0.0% 0 :
0.0% 73M: 18.5% 0 : 0.0% 2340k
cp/constexpr.c:1420 (cxx_bind_parameters_in_call 182M: 96.7% 0 :
0.0% 182M: 46.2% 0 : 0.0% 9362k
Both of these are involved with caching the values of constexpr calls. Looking
at the code, it seems that we do the second allocation even when we get a cache
hit, and then don't free it, so it builds up until we can do GC later.
