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clang-p2996/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
Simon Pilgrim 72b324de4d [TargetLowering] Add BuildSDiv support for division by one or negone. 
This reduces most of the sdiv stages (the MULHS, shifts etc.) to just zero/identity values and use the numerator scale factor to multiply by +1/-1.

llvm-svn: 340260
2018-08-21 10:20:36 +00:00

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