With the current custom match rules, we may generate code like ``` cmp.ueq.s $f0, $f12, $f14 mfc1 $1, $f0 not $1, $1 mtc1 $1, $f0 sel.s $f0, $f14, $f12 jrc $ra ``` With Expand, we can get: ``` cmp.ueq.s $f0, $f12, $f14 sel.s $f0, $f12, $f14 jrc $ra ```