http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52367
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-02-24
Ever Confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2012-02-24
11:35:23 UTC ---
Over estimating is safe, though potentially sub-optimal. The concern is mainly
around under-estimating, which can lead to broken code. Beware, however that
if an insn pattern generates more than one assembly language instruction then
all the length costs will be associated with one instruction (normally the
last).
R.
