Craig Topper 0308690c50 Recommit "[InstSimplify] Remove select ?, undef, X -> X and select ?, X, undef -> X transforms" and its follow up patches ... This recommits the following patches now that D85684 has landed 1cf6f210a2e [IR] Disable select ? C : undef -> C fold in ConstantFoldSelectInstruction unless we know C isn't poison. 469da663f2d [InstSimplify] Re-enable select ?, undef, X -> X transform when X is provably not poison 122b0640fc9 [InstSimplify] Don't fold vectors of partial undef in SimplifySelectInst if the non-undef element value might produce poison ac0af12ed2f [InstSimplify] Add test cases for opportunities to fold select ?, X, undef -> X when we can prove X isn't poison 9b1e95329af [InstSimplify] Remove select ?, undef, X -> X and select ?, X, undef -> X transforms		2020-08-12 10:45:27 -07:00
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AMDGPU	Recommit "[InstSimplify] Remove select ?, undef, X -> X and select ?, X, undef -> X transforms" and its follow up patches	2020-08-12 10:45:27 -07:00
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