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3 Commits

Author SHA1 Message Date
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
Simon Pilgrim
3f8c2520c0 [X86] Add commuted patterns test coverage for D93599 
Suggested by @spatel
 2021-01-06 18:03:20 +00:00
Simon Pilgrim
dfcb872c3e [X86] Add scalar/vector test coverage for D93599 
This expands the test coverage beyond just the boolvector/movmsk concat pattern
 2021-01-06 11:58:27 +00:00