https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63156
--- Comment #8 from Carrot <carrot at google dot com> --- (In reply to Steven Bosscher from comment #7) > (In reply to Carrot from comment #6) > > Since it is intentionally to remove flag DF_REF_READ_WRITE on use, > > Ah, but I don't think that was the correct fix. The DEF and USE refs should > both have the flag set. I agree it's more reasonable to set DF_REF_READ_WRITE flag on both use and def, it means we need to revert r125736 and reopen bug 32339.
