https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64193
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Created attachment 34229 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34229&action=edit patch Ok, I see the regression introduced by that rev., but on trunk (r218479) I get the same code generated with/without the attached fix. I'm using -O3 -m32 -march=i686 on x86_64-linux. Probably the regression was mitigated by the partial fix for PR63677: 2014-11-20 Richard Biener <rguent...@suse.de> PR tree-optimization/63677 * tree-ssa-dom.c: Include gimplify.h for unshare_expr. (avail_exprs_stack): Make a vector of pairs. (struct hash_expr_elt): Replace stmt member with vop member. (expr_elt_hasher::equal): Simplify. ... where DOM now catches the CSE opportunities FRE no longer did.
