Matthias Braun 9912bb817c MachineRegisterInfo: Remove UsedPhysReg infrastructure ...

We have a detailed def/use lists for every physical register in
MachineRegisterInfo anyway, so there is little use in maintaining an
additional bitset of which ones are used.

Removing it frees us from extra book keeping. This simplifies
VirtRegMap.

Differential Revision: http://reviews.llvm.org/D10911

llvm-svn: 242173

2015-07-14 17:52:07 +00:00

6.6 KiB

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