Chris Lattner c8226f32e9 Simplify the side effect stuff a bit more and make licm/sinking ...

both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.

llvm-svn: 45843

2008-01-10 23:08:24 +00:00

12 KiB

Raw Blame History

View Raw