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67a2b82b14
Register coalescing can change the target of a RegPair hint to a physreg, we should not crash on this. This also slightly improved the way ARMBaseRegisterInfo::updateRegAllocHint() works. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233987 91177308-0d34-0410-b5e6-96231b3b80d8