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Commit ca29023b authored by David Majnemer's avatar David Majnemer
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[X86] Reduce memory allocations in X86TargetMachine::getSubtargetImpl 

We performed a number of memory allocations each time getTTI was called,
remove them by using SmallString.
No functionality change intended.

llvm-svn: 270246
parent 6e80dbcd
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