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Commit 80cbed4f authored by Chris Lattner's avatar Chris Lattner
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Another nice speedup for the register allocator. This time, we replace 

the Virt2PhysRegMap std::map with an std::vector.  This speeds up the
register allocator another (almost) 40%, from .72->.45s in a release build
of LLC on 253.perlbmk.

llvm-svn: 11219
parent 56f9b190
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