[Bug c/12245] [7/8/9 regression] Uses lots of memory when compiling large initialized arrays

fche at redhat dot com gcc-bugzilla@gcc.gnu.org
Wed Feb 27 19:52:00 GMT 2019


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=12245

--- Comment #68 from Frank Ch. Eigler <fche at redhat dot com> ---
(In reply to Jakub Jelinek from comment #67)
> Are the values completely random or are there big chunks with the same
> values?

I'd suspect pretty random, considering that gzip of the 
generated source code compresses by only 80%.  In the case
of the systemtap example, it's approximately a byte dump of the
.debug_line section, which is relatively efficiently encoded,
ergo incompressible.


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