[Bug middle-end/63155] [6/7/8/9 Regression] memory hog

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63155

--- Comment #28 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 44724
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44724&action=edit
patch for the SSA propagator issue

Using an sbitmap helps.  I am testing the attached.