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* Don't create a MIN/MAX node if the underlying compare has more than one use.James Molloy2015-06-041-0/+11
| | | | | | | | | If the compare in a select pattern has another use then it can't be removed, so we'd just be creating repeated code if we created a min/max node. Spotted by Matt Arsenault! llvm-svn: 239037
* Mark SMIN/SMAX/UMIN/UMAX nodes as legal and add patterns for them.James Molloy2015-05-151-0/+96
The new [SU]{MIN,MAX} SDNodes can be lowered directly to instructions for most NEON datatypes - the big exclusion being v2i64. llvm-svn: 237455
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