message: blacklist a few more IPO passes
diff: set -e
  # IPO passes aren't supported ATM
  -PASSES="argpromotion deadargelim inline ipsccp mergefunc partial-inliner"
  +PASSES="argpromotion deadargelim hotcoldsplit inline ipconstprop ipsccp mergefunc partial-inliner -Os -O2 -O3"
  TV="-tv"
  for p in $PASSES; do
  