[llvm] [GISel][CombinerHelper] Combine and(trunc(x), trunc(y)) -> trunc(and(x, y)) (PR #89023)

[Thorsten Schütt via llvm-commits]

tschuett wrote:

Instcombine handles freeze separately. We are going to follow that pattern:
https://github.com/llvm/llvm-project/blob/dc8f6a8cdad427345a60f5142411617df521c303/llvm/lib/Analysis/InstructionSimplify.cpp#L6935

https://github.com/llvm/llvm-project/pull/89023