[InstCombine] Optimize test for same-sign of values

(icmp slt (X & Y), 0) | (icmp sgt (X | Y), -1) -> (icmp sgt (X ^ Y), -1)
(icmp slt (X | Y), 0) & (icmp sgt (X & Y), -1) -> (icmp slt (X ^ Y), 0)

[[ https://alive2.llvm.org/ce/z/qXxEFP | alive2 example ]]
[[ https://godbolt.org/z/aWf9c6j74 | godbolt  ]]

[[ https://godbolt.org/z/5Ydn5TehY | godbolt for inverted form ]]
[[ https://alive2.llvm.org/ce/z/93AODr | alive2 for inverted form ]]
[[ https://github.com/llvm/llvm-project/issues/55988 | issue #55988 ]]

Differential Revision: https://reviews.llvm.org/D127903