https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68173
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-11-20 Ever confirmed|0 |1 --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. Note the patch in comment #5 was supposed to make us end up with less pseudos but it didn't really help (much). Another thing we don't do at -O0 is aggressive coalescing of SSA vars. A somewhat smaller (but sill big) testcase would be much nicer to work with btw.