Justin Bogner 39b6b2f0b0 TableGen: Switch from a std::map to a DenseMap in CodeGenSubRegIndex. NFC
This mapping is between pointers, which DenseMap is particularly good
at. Most targets aren't really affected, but if there's a lot of
subregister composition this can shave off a good chunk of time from
generating registers.

llvm-svn: 279875
2016-08-26 22:29:36 +00:00
..
2016-04-18 09:17:29 +00:00
2016-04-18 09:17:29 +00:00