Duncan Sands bb8a3f9f6d Stop using the dom frontier in DwarfEHPrepare by not promoting alloca's ...

any more.  I plan to reimplement alloca promotion using SSAUpdater later.
It looks like Bill's URoR logic really always needs domtree, so the pass
now always asks for domtree info.

llvm-svn: 112597

2010-08-31 09:05:06 +00:00

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