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Simon Pilgrim
bf7affeaa5
[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
[TableGen] Don't separately search for DefaultMode when we're going to iterate the set anyway. NFCI.
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