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Author SHA1 Message Date
Andrew Trick e2f7cc4cf3 LiveRegUnits: Use *MBB for consistency and convenience. 
llvm-svn: 192634
 2013-10-14 22:18:59 +00:00
Andrew Trick 3f4d6c6538 LiveRegUnits::removeRegsInMask safety. 
Clobbering is exclusive not inclusive on register units.
For liveness, we need to consider all the preserved registers.
e.g. A regmask that clobbers YMM0 may preserve XMM0.
Units are only clobbered when all super-registers are clobbered.

llvm-svn: 192623
 2013-10-14 20:45:19 +00:00
Andrew Trick 0aed0cfc44 Move LiveRegUnits implementation into .cpp. Comment and format. 
llvm-svn: 192621
 2013-10-14 20:45:14 +00:00