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20374872ff
During the execution of long functions or functions that have a lot of inlined code it could come to the situation where tracked value could be transferred from one register to another. The transfer is recognized only if destination register is a callee saved register and if source register is killed. We do not salvage caller-saved registers since there is a great chance that killed register would outlive it. Patch by Nikola Prica. Differential Revision: https://reviews.llvm.org/D44016 llvm-svn: 336978
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