Fix PR26940 where compiles times regressed massively.

Fix PR26940 where compiles times regressed massively.

Patch by Jonas Paulsson. Original description:
Bugfix in buildSchedGraph() to make -dag-maps-huge-region work properly

I found that the reduction of the maps did in fact never happen in this
test case. This was because *all* the stores / loads were made with
addresses from arguments and they thus became "unknown" stores / loads.
Fixed by removing continue statements and making sure that the test for
reduction always takes place.

Differential Revision: http://reviews.llvm.org/D18673

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@265063 91177308-0d34-0410-b5e6-96231b3b80d8