[Bug debug/58315] [4.8/4.9 Regression] Excessive memory use with -g

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58315

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Unsurprisingly the culprit is var-tracking.  Disabling it gets memory use
down to 250MB.