[llvm] [ValueTracking] Make the MaxAnalysisRecursionDepth overridable (PR #137721)

[Jeffrey Byrnes via llvm-commits]

jrbyrnes wrote:

To suppoort the request:

> should be a local pass parameter if configurable

I am thinking to change the computeKnownBits methods to provide an override flag.

By doing so, I think we can also address

> the depth limit is also load bearing to avoid infinite recursion for unreachable IR that contains cycles

I think the infinite recursion can only be triggered through PHINodes / calls .. so we can just pessimistically never override the depth limit for these cases.

https://github.com/llvm/llvm-project/pull/137721