https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62146
--- Comment #1 from Easwaran Raman <eraman at google dot com> --- Created attachment 33331 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33331&action=edit Patch to remove obsolete REG_EQUAL note during RTL copy prop This patch kills the REG_EQUAL note during cprop when the propagated value is a constant. This doesn't the CSE problem that conflates 0 and the symbol.