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Commit f43d6799 authored by Evan Cheng's avatar Evan Cheng
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Add virtual method spillCalleeSaveRegisters() and restoreCalleeSaveRegisters() 

to MRegisterInfo. These allow the target to issue instructions to spill and
restore callee saved registers in case where individual stores / loads aren't
the correct / profitable choice.

llvm-svn: 32820
parent 42a1cb7c
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