Commit 550c8f7f authored by Joel Galenson's avatar Joel Galenson Committed by Yi Kong
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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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321224 91177308-0d34-0410-b5e6-96231b3b80d8
parent ddb4c9a5
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