llvm-svn: 28678

actually going on.

llvm-svn: 28677

llvm-svn: 28619

reimplement getValueDominatingFunction to walk the DominanceTree rather than
just searching blindly.

llvm-svn: 28618

llvm-svn: 28599

is now theoretically feature-complete.  It has not, however, been thoroughly
test, and is still considered experimental.

llvm-svn: 28529

other calculations on each individually, rather than trying to delay it and do
them all at the end.

llvm-svn: 28527

the iterated Dominance Frontier of the loop-closure Phi's.  This is the
second phase of the LCSSA pass.  The third phase (coming soon) will be to
update all uses of loop variables to use the loop-closure Phi's instead.

llvm-svn: 28524

llvm-svn: 28512

llvm-svn: 28507

there's still a lot of work to be done on it.

llvm-svn: 28506

and documentation updates soo.

llvm-svn: 28495