[Bug debug/78288] Compile time hog (with var-tracking) for libsanitizer/asan/asan_interceptors.cc

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78288

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 48869
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48869&action=edit
alternate patch

OK, I have another patch that reduces the overall number of visited blocks
in stage3 gcc/*.o by about 10%.  There are a few outliers that I need to
understand (because it should never(?) cause more blocks to be iterated).
Famous last words...