[TargetRegisterInfo] Re-apply r265734.
authorQuentin Colombet <qcolombet@apple.com>
Fri, 8 Apr 2016 00:51:00 +0000 (00:51 +0000)
committerQuentin Colombet <qcolombet@apple.com>
Fri, 8 Apr 2016 00:51:00 +0000 (00:51 +0000)
commite57546de4044418342431e79b2dea72f971306db
tree000b0a56ac59bad66aa3427befed42562e410346
parent2fbe04e93ded95b779c86af4241fcbd86366d7c8
[TargetRegisterInfo] Re-apply r265734.

Original commit message:
[TargetRegisterInfo] Refactor the code to use BitMaskClassIterator.

llvm-svn: 265764
llvm/lib/CodeGen/TargetRegisterInfo.cpp