Generate where with C++ ? ... : ... rather than using device functions
#2472
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In #2454, I had a gmem access error when I used the
whereternary op for predicated gmem accesses. I believe that's because the runtime functions ofwhereare pass-by-value functions, so all the arguments are evaluated before calling thewherefunctions.This could be worked around by changing the runtime functions to accept references or pointers, but don't like the idea of taking addresses of potentially register values. The simplest fix I think is to just generate
... ? ... : ....