[llvm-commits] vector widening patch

[Duncan Sands]

> > how about adding Widen to LegalizeAction, to make things uniform with
> > expand and promote.  Also, I think it would be better to do this in
> > LegalizeTypes [*] rather than in LegalizeDAG - it's the future, and
> > it's also much cleaner.
> 
> Wouldn't it make sense to use 'expand' to mean "scalarize" and  
> 'promote' to mean "widen"?

Yeah, LegalizeTypes already converts Expand into one of
ExpandInteger, SoftenFloat, ExpandFloat, ScalarizeVector
or SplitVector.  It could turn Promote into either
PromoteInteger (like now) or WidenVector in a similar way.
No need to add it to LegalizeAction (that suggestion was a
thinko on my part).

Ciao,

Duncan.