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Commit 6f4e827e authored by Joel Galenson's avatar Joel Galenson
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[ARM] Optimize {s,u}{add,sub}.with.overflow. 

The AArch64 backend contains code to optimize {s,u}{add,sub}.with.overflow during SelectionDAG.  This commit ports that code to the ARM backend.

Differential revision: https://reviews.llvm.org/D35635

llvm-svn: 321224
parent 207ee3d0
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