Simon Pilgrim 350ab7aa1c [DAG] Simplify OR(X,SHL(Y,BW/2)) eq/ne 0/-1 'all/any-of' style patterns ...

Attempt to simplify all/any-of style patterns that concatenate 2 smaller integers together into an and(x,y)/or(x,y) + icmp 0/-1 instead.

This is mainly to help some bool predicate reduction patterns where we end up concatenating bool vectors that have been bitcasted to integers.

Differential Revision: https://reviews.llvm.org/D93599

2021-01-07 12:03:19 +00:00

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