https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316
--- Comment #29 from Than McIntosh <thanm at google dot com> --- Tested patch at https://gcc.gnu.org/bugzilla/attachment.cgi?id=46337 and that brings compile time now down to about 700 seconds. -ftime-report shows that tree-PRE is still the major culprit. Also tested second patch at https://gcc.gnu.org/bugzilla/attachment.cgi?id=46339 and that looks even better, reduces compile time to 137 seconds, which is well under the timeout enforced by our build system. Thanks--
